Phase 1 · Chandigarh Pilot · 2026
Three sides.
One estimate.
Two revenue streams.
Projinn connects project owners, internal QS consultants, and verified contractors through a single document — the Technical Estimate. Every project on the platform flows through this document, regardless of path selected.
₹5–6L Cr
TAM · Phase 1
₹2Cr+ Private Construction
50 Projects
Phase 1 target
6 months · Chandigarh
₹31.5L
Phase 1 revenue target
Break-even Month 3
2 Streams
Estimate fee + Bid fee
No subscriptions
₹2Cr+
Minimum project value · Private construction only
₹8Cr
Average project size · Phase 1 target mix
₹63K
Revenue per avg ₹8Cr project (estimate + 8 bids)
48hr
Contractor verification SLA · Ops team target
37
Features · 7 modules
3
User portals
24
Notification events
112
Data fields · 5 entities
Three-sided Platform
Client — Project Owner
Submits drawings and brief. Chooses service path A / B / C. Pays estimate fee if applicable. Receives Technical Estimate PDF. Reviews contractor bids. Finalises one contractor.
Pays estimate fee
Projinn — Internal
PM reviews submissions, sets fees, assigns QS consultants. Consultants build the 6-section Technical Estimate. PM approves 100% before delivery. No exceptions.
100% PM QC Gate
Contractor — Verified Builder
Receives bid invitation with project teaser. Pays flat bid fee to unlock full Technical Estimate PDF. Submits structured bid. Client selects winner.
Pays bid fee · Non-refundable
Revenue Model
Client
Submits project
estimate fee
Stream 1
₹25–50K
estimate built & delivered
Projinn
6-section estimate
bid window opens
Stream 2 × N
₹1K–7.5K
per bid fee paid
Contractor
Pays to unlock + bid
STREAM 1
Estimate Document Fee
PM quotes manually per project.
₹2–5Cr projects
₹25–35K
₹5–10Cr projects
₹35–50K
Timer only visible when fee > ₹0 · Partial fee: 1st instalment unlocks work · GST auto-invoice
STREAM 2
Bid Submission Fee
Tiered flat fee. Non-refundable once paid.
Under ₹2Cr
₹1K
₹2–10Cr
₹3.5K
₹10Cr+
₹7.5K
Full estimate PDF unlocked on payment · Refund only on project cancellation
Phase 1 — Deliberately excluded
— No subscriptions — No points / wallet — No escrow / success fee — No referral programme — No NRI features — No support ticketing — No mobile app — No contractor ratings
Step Zero — First Decision
Service Paths A / B / C
Client picks their path before any form fields. This single selection determines: fee applicability, timer visibility, PDF access, and whether bidding opens. Cannot be changed post-submission without admin.
OPTION A
Estimate Document Only
Client receives the full Technical Estimate PDF — BOM, area statement, labour, MEP, indirect costs, summary. Uses it independently for bank submissions, contractor negotiations, or planning. No bidding opened.
Estimate Fee
Yes — PM quotes
Timer
Yes (if fee > ₹0)
PDF Access
Full PDF
Bidding
Not opened
OPTION B
Contractor Bids Only
Client pays nothing. Estimate produced internally. Client sees teaser only: total cost + pie chart. Upgrade prompt shown: "Download full estimate — ₹35,000." Contractors pay to bid and access estimate. Natural upsell built in.
Estimate Fee
₹0 to client
Timer
Not shown
PDF Access
Teaser only
Bidding
Yes — auto opens
OPTION C ★
Estimate + Bids Recommended
Estimate fee applies. Client gets full PDF. Bidding opens on same day as delivery. Contractors bid against the exact same expert document. Client compares bids directly against Projinn estimate. Best outcome path.
Estimate Fee
Yes — PM quotes
Timer
Yes (if fee > ₹0)
PDF Access
Full PDF
Bidding
Yes — auto opens
Technical Estimate is always created — regardless of path. Option B clients who chose "no document" still have a full estimate produced internally. They see the teaser, not the PDF. This is the platform's natural upsell mechanic. The estimate is never optional.
Workflow · Client
Client Journey — 8 Steps
Registration → Step 0 path selection → 5-step form → fee notification → payment → estimate delivered → bid review → contractor selected.
Full 8-step workflow detail with edge cases and data attributes captured at each step is documented in the Detailed Workflow document. The screens on the Client Portal page show the key interaction points.
1
Registration + OTP
Email + mobile both verified · Captures: full_name, email, mobile, city, client_type, source_channel
2
Step 0 — Service Path Selection
A (estimate only) / B (bids only) / C (both). Locked after submission. Captures: service_path, selection_timestamp
3
5-Step Project Form
Type + location → scope → timeline + budget → document upload (min 1) → review + submit. Auto-saves every 30s from step 2.
4
Fee Notification (A & C only)
PM sets fee → email + SMS + bell → client sees amount + 5-day timer. Option B skips this entirely.
5
Estimate Fee Payment
Razorpay modal. Full or 1st instalment. GST invoice auto-generated. Payment triggers estimate work to begin.
6
Estimate Delivered
A/C: full PDF unlocked. B: teaser + upgrade prompt ₹35K. Bidding opens auto for B/C. 60-day validity.
7
Bid Review (B & C only)
Comparison table sorted by amount. Variance colour-coded. Message contractor. >40% variance flagged.
8
Contractor Selected
Confirmation dialog. Contact details exchanged. All other bidders notified. Status: Contractor Finalised.
Workflow · Contractor
Contractor Journey — 6 Steps
Registration → ops verification → bid invitation (teaser) → bid fee payment + estimate unlock → structured bid submission → outcome.
1
4-Step Registration
Basic info → GST (API validated) + business details → portfolio (min 3 photos, min 1 past project) → bank details. Submitted to ops verification queue immediately.
2
Ops Verification — 48hr SLA
Admin reviews GST, docs, portfolio, work type. Approved → Verified badge, email + SMS. Rejected → email with specific reason + resubmission list.
3
Bid Invitation — Teaser Only
Email + SMS + bell. Teaser: project type, general city, floors, value range, bid fee, deadline. "Not Interested" = removed, no penalty.
4
Bid Fee Payment + Estimate Unlocked
₹1K / ₹3.5K / ₹7.5K. Full estimate PDF + bid form activated on payment. Non-refundable. GST invoice auto-generated.
5
Structured Bid Submission
Total bid (real-time variance shown) → phase breakdown (must sum to total) → timeline → team + engineer → notes. Locked permanently on submit.
6
Outcome
Selected: email + SMS + client contact revealed. Not selected: email. Cancelled: all refunded within 5 business days.
Workflow · Internal
Admin & PM Flow — 6 Stages
PM (Civil) owns every project. Consultants build estimates. 100% PM QC gate before delivery. No estimate publishes without PM approval.
1
PM Reviews New Submission
Kanban card appears. PM reviews drawings + scope. Sets fee (manual: full/partial/free). Assigns consultant. Sets delivery deadline. Sends quote.
2
Consultant Builds Sections A–F
A: auto-pulled. B: floor-wise area statement. C: BOM line-items + rate DB. D: labour phase-wise. E: indirect costs. F: auto-generated summary + pie chart. Saves every 5 min.
3
PM QC Review — 100% Gate
PM reviews all sections. Inline comments on BOM line items. Approve or request revision. Revision cycle counted. On approval: PDF auto-generated + watermarked.
4
Contractor Matching + Invitation
System filters: city + work type + project size ±50%. PM reviews + confirms list. Invitations sent simultaneously. 10-day bid window opens.
5
Bid Window Management
Live bid count. Day 5 alert if <3 bids → expand pool or extend 5 days. Auto-closes at deadline. All bids locked on close.
6
Revenue Dashboard
Monthly estimate fee + bid fee + total. Pipeline (quotes pending). Consultant productivity. Avg delivery. Bid rate. Option B upgrade conversion. CSV export for GST.
UI Screens · Auth
Auth & Registration
First point of contact for both clients and contractors. Email + mobile OTP — both must complete before account is created. Role determined by registration entry point.
1
Client Registration + Dual OTP Verification
ClientLeft: form fields · Right: OTP verification panel — both required before account is created
projinn.in/register
Create your account
For project owners, developers & architects
+91
I agree to Projinn's Terms and Privacy Policy
Verify your contact details
OTP sent to rajiv.sharma@acmecorp.in
Email OTP
4
8
2
1
Resend in 48s
OTP sent to +91 98765 43210
Mobile OTP
7
3
Both email and mobile must be verified. Contact details used only for project notifications — never shared or sold.
2
Login — Client & Contractor
All RolesClients use email + password. Contractors use mobile OTP. Separate portals — role detected from email/mobile.
projinn.in/login
Welcome back
Sign in to your Projinn account
Remember me 30 days
Forgot password?
Don't have an account? Register here
Three portals. One platform.
Client Portal
Submit projects, review bids
Contractor Portal
Receive invitations, submit bids
Admin Panel
Estimates, verification, revenue
3
Project Submitted — Confirmation Screen
ClientShown after 5-step form submitted. Reference number, clear next steps, email + SMS confirmation sent.
projinn.in/submit/confirmed
Project submitted
We've received your brief for Acme Commercial Tower, Chandigarh
Project reference
CIQ-2026-0053
1
PM reviews within 24 hours
Civil PM reviews your drawings and scope, then sends an estimate fee quote.
2
You confirm the estimate fee
Accept and pay. QS team builds your Technical Estimate document immediately.
3
Estimate delivered + contractors invited
Full Technical Estimate PDF delivered. Verified contractors bid — you compare and select.
Confirmation sent to rajiv.sharma@acmecorp.in and +91 98765 43210
UI Screens · Client Portal
Client Portal — 4 Screens
Service path selection, document upload, fee notification with timer, and bid comparison. The complete client experience from brief to contractor selected.
1
Step 0 — Service Path Selection
ClientFirst screen in project submission — before any form fields. Selection locked after submit.
projinn.in/submit/start
What do you need from Projinn?
This determines your fee, your document access, and whether contractors can bid on your project.
Estimate Document Only
Get a professional Technical Estimate PDF. Use it for bank submissions, contractor negotiations, or your own planning. No bidding opened.
Estimate fee applies
Contractor Bids Only
Receive competitive bids from verified contractors. You'll see a cost summary — download the full estimate later if needed. Contractors pay to bid.
Free to start
Estimate + Contractor Bids RECOMMENDED
Get the full Technical Estimate PDF and invite verified contractors to bid against it. Compare bids directly against our expert estimate — the most informed way to proceed.
Estimate fee applies
2
Project Form — Step 4: Document Upload
ClientMin 1 drawing required to submit. Progress per file. Auto-saves every 30s.
projinn.in/submit/documents
Projinn
Submit Project
Rajiv S.
Type & Location
Scope
Timeline
Documents
Review
Upload your drawings
DWG, PDF, JPG or PNG · 50MB per file · Max 10 files · At least 1 required
Drop files here or click to browse
Architectural plans, structural drawings, site layouts — all improve estimate accuracy
Ground_Floor_Plan_v3.pdf 2.4 MB Uploaded
Structural_RCC_Frame.dwg 5.1 MB Uploaded
Elevation_East_Facade.pdf 3.8 MB
65%
Tip: Include ground floor plan, first floor plan, site layout, and structural drawing. The more complete your drawings, the more accurate your estimate.
3
Client Dashboard — Fee Notification + Payment
ClientTimer shown only when fee > ₹0. Payment triggers estimate work to begin immediately.
projinn.in/dashboard/projects/CIQ-2026-0053
Dashboard
My Projects
Payments
Profile
Acme Commercial Tower
CIQ-2026-0053 · Commercial Office · Chandigarh · G+2 + Basement
Fee Quote Received
Your Technical Estimate Includes
Floor-wise Area Statement — 3 floors + basement
Full Bill of Materials — 200+ line items
Labour estimate by phase
MEP and indirect costs
Executive summary with pie chart
60-day material rate validity
₹42,000
+ 18% GST = ₹49,560 total · Quoted by Arvind Mehta (PM)
Part 1 now: ₹21,000 · Part 2 on delivery: ₹21,000
Quote expires in
3d 14h 22m
After this the quote is cancelled — you'll need to re-request
Project Details
Commercial Office · Chandigarh · G+2 + Basement
Built-up: 14,200 sqft · RCC Structure · Premium
Special: Lift · HVAC · Fire Fighting
Start: October 2026
4
Client Dashboard — Bid Comparison Table
ClientAfter bid window closes. Sorted by lowest bid. Variance colour-coded against Projinn estimate.
projinn.in/dashboard/projects/CIQ-2026-0053/bids
My Projects
Payments
Acme Commercial Tower — Bids
Projinn Estimate: ₹6,84,00,000 · 4 bids · Sorted: Lowest first
Bid Window Closed
1
Suresh Construction Pvt Ltd Verified
28 projects · Chandigarh · Civil + Structural · 240 days
₹6,41,00,000
−6.3% vs estimate
2
Pratap Infra Engineers Verified
15 projects · Mohali · Civil + MEP · 255 days
₹6,72,00,000
−1.8% vs estimate
3
Arjun Builders Ltd Verified
42 projects · Chandigarh · All types · 230 days
₹6,96,00,000
+1.8% vs estimate
4
KP Construction Corp Verified
8 projects · Panchkula · Civil Structural · 270 days
₹7,20,00,000
+5.3% vs estimate
Selecting a contractor shares your contact details with them and notifies all others. This does not create a legal contract — sign a formal agreement before any payments or work begins.
UI Screens · Contractor Portal
Contractor Portal — 3 Screens
Invitation with teaser, structured bid submission with live variance, and bid history dashboard. Contractor pays to unlock — estimate PDF and bid form activate on payment.
1
Contractor — Bid Invitation + Fee Payment
ContractorTeaser only until bid fee paid. Exact address not shown — city general only.
projinn.in/contractor/invitations/INV-0098
Invitations 2
My Bids
Payments
Verified
Suresh Construction
New bid invitation
INV-0098 · Received 14 Jun 2026
Bid deadline
6d 08h
Project Teaser
CategoryCommercial Office
LocationChandigarh (central)
Built-up~14,000 sqft
FloorsG+2 + Basement
StructureRCC Frame
FinishingPremium
SpecialLift · HVAC · Fire
Projinn Estimate (Summary)
₹6.84 Crore
Full BOM, area statement, labour & MEP details unlocked after payment
Civil 62% MEP 18% Finishes 14% Misc 6%
Bid access fee — ₹3,500 + 18% GST
Non-refundable. On payment: full 200+ line item estimate unlocked, bid form activated. GST invoice to your registered GSTIN.
2
Contractor — Structured Bid Form (Phase Breakdown)
ContractorPhase totals must = bid total. Blocked on submit if mismatch. Locked permanently after submit.
projinn.in/contractor/bids/INV-0098/submit
Bid Amount
Phase Breakdown
Timeline
Team & Resources
Notes
Review & Submit
Your total bid
₹6,41,00,000
−6.3% below estimate
Section 2 — Phase-wise Cost Breakdown
Phase totals must equal your bid of ₹6,41,00,000. Locked on submit.
Phases pre-populated from Projinn Technical Estimate. Edit individual amounts — total auto-recalculates.
PhaseEstimate ₹Your Bid ₹Diff
Substructure & Foundation82,40,000−5.1%
RCC Superstructure1,84,00,000−6.5%
Masonry & Plastering64,00,000−7.0%
MEP — Electrical58,00,000−3.4%
MEP — Plumbing & HVAC64,00,000−1.9%
Finishes & Interior1,04,60,000−8.2%
TOTAL5,57,00,0006,41,00,000−6.3%
3
Contractor — My Bids Dashboard
ContractorActive, won, and historical bids. Outcome clearly shown. Won = client contact revealed.
projinn.in/contractor/bids
Invitations
My Bids
Payments
Verified
Suresh Construction
My Bids
Acme Commercial Tower — Chandigarh
BID-2026-CIQ-0053-003 · Commercial Office
Awaiting Decision
Your bid
₹6,41,00,000
vs estimate
−6.3% below
Bid fee paid
₹4,130
Decision by
22 Jun 2026
Saini Clinic Expansion — Mohali
BID-2026-CIQ-0031-002 · Institutional
 Selected — You won
Your bid
₹3,84,00,000
vs estimate
−4.1% below
Trident Hotel Extension — Chandigarh
BID-2026-CIQ-0043-004 · Hospitality
Not selected
Your bid: ₹9,12,00,000 · Bid fee: ₹8,850 · Download GST invoice
UI Screens · Admin Panel
Admin Panel — 3 Screens
Project Kanban with live metrics, Technical Estimate Builder (Section C BOM), and Contractor Verification review. Internal only — not visible to clients or contractors.
1
Admin — Project Queue (Kanban)
Admin / PMAll projects across lifecycle stages. Click any card for full detail + action panel.
admin.projinn.in/projects
Projinn
Admin
Projects
Contractors
Revenue
23
Active projects
₹7.84L
Revenue — June
4.2
Avg bids/project
8.3d
Avg estimate delivery
New 3
CIQ-2026-0051
Narula Pharma Warehouse
Industrial · 28K sqft · Mohali
Fee: TBD
CIQ-2026-0052
Sector 62 Retail Complex
Commercial · 11K sqft
In Progress 6
CIQ-2026-0044
DLF Corporate Park
Office · G+4 · Mohali
Due: 3 days
CIQ-2026-0040
Sunview School Block
Institutional · 9,800 sqft
Due: Tomorrow
PM QC 2
CIQ-2026-0043
Trident Hotel Extension
Hospitality · G+3
Awaiting PM
Bidding 5
CIQ-2026-0053
Acme Commercial Tower
Commercial · ₹6.84Cr
4 bids · 6d left
CIQ-2026-0039
Patel Group Warehouse
Industrial · Panchkula
1 bid · Day 5 alert
Finalised 7
CIQ-2026-0031
Saini Clinic Expansion
Institutional · Mohali
Suresh Construction
2
Admin/Consultant — Estimate Builder (Section C: BOM)
Internal OnlyRate DB pulls rates on category selection. Auto-calculates row + section totals. Saves every 5 min.
admin.projinn.in/estimates/CIQ-2026-0053/build
Sections
A · Project Summary
B · Area Statement
C · Bill of Materials
D · Labour Estimate
E · Indirect Costs
F · Summary Sheet
Section C total
₹4,21,38,000
Auto-saved 2m ago
Section C — Bill of Materials  civil_structural
Description
Specification
Unit
Qty
Rate (₹)
Amount (₹)
Substructure
Excavation & earthwork
Manual + JCB
Cu.m
380
420
1,59,600
PCC Bed (1:4:8)
M15 grade
Cu.m
42
4,800
2,01,600
RCC Foundation
M25 + Fe500
Cu.m
186
12,400
23,06,400
11,47,000
Superstructure — RCC Frame
RCC Columns
M25, Fe500 @ 130 kg/m³
Cu.m
112
14,200
15,90,400
RCC Beams + Slab
M25, Fe500 @ 95 kg/m³
Cu.m
284
13,600
38,62,400
Rate DB: CHD-2026-Q2 · Rates valid to 30 Sep 2026
3
Admin — Contractor Verification Panel
Admin / Ops48-hour SLA tracked. GST API validated. One-click approve or reject with written reason.
admin.projinn.in/contractors/verify/CTR-0089
Projinn
Admin
Projects
Contractors 3
Revenue
Pratap Infra Engineers
CTR-0089 · Registered 13 Jun 2026 · 19h left in SLA
Pending
Contact
Pratap Singh
Cities
Mohali + CHD
Work Type
Civil + MEP
Avg Project
₹2–10Cr
Years
12 years
Active Projects
3 currently
GST 03AADCP1234F1Z5 validated via GST API · Punjab · Active · Proprietorship
Portfolio (4 photos)
Past Projects
Corporate Office · Mohali · ₹6.2Cr · 2024
Warehouse Complex · Panchkula · ₹3.8Cr · 2023
Verification Checklist
GST number validated via API — active
Portfolio photos — 4 submitted, quality acceptable
Work type matches stated specialisation
City coverage appropriate for Phase 1
Past project values align with avg size stated
Completion certificates (none uploaded)
No completion certificates. Portfolio looks legitimate. Recommend approving with note to upload certs by Q3.
Internal note
Approval sends email + SMS to contractor immediately
UI Screens · Technical Consultant
Consultant Portal — 5 Screens
The consultant is the production engine behind the Technical Estimate. These screens cover task assignment, AI-assisted drawing analysis with auto-generated legends, BOM building with rate DB lookup, PM comment resolution, and final submission.
Task Queue
Screen 1
Open drawing
Drawing Analysis
Screen 2 · AI
PM assigns
Build Sections A–F
Screen 2
Submit for review
PM Comments
Screen 3
PM approves
Final Submit
Screen 4
2
Consultant Dashboard — Assigned Projects Queue
Technical Consultant All active assignments with deadline health, section progress, and PM comment alerts.
projinn.in/consultant/dashboard
Projinn
QS Consultant
My Projects
Rate Database
Submitted
Priya M.
Active
4
Due in 48h
2
PM Comments
3
This Month
6
DLF Corporate Park, Mohali
CIQ-2026-0044 · Commercial Office · G+4 · 28,000 sqft
Due Tomorrow
A · Summary B · Area C · BOM 68% D · Labour E · Indirect F · Summary
Section complete
2 / 6
Trident Hotel Extension, Chandigarh
CIQ-2026-0043 · Hospitality · G+3 · 22,400 sqft
3 PM Comments
A B C · 2 comments D E · 1 comment F
Due
25 Jun 2026
Acme Commercial Tower, Chandigarh
CIQ-2026-0053 · Commercial · G+2 + Basement · 14,200 sqft
On Track
A B · Area C · BOM D E F
Due
29 Jun 2026
2
Drawing Analysis — AI Room Detection & Legend Builder
AI-Assisted · Technical Consultant System parses uploaded floor plan → detects rooms, labels, wall types, openings → auto-generates legend with area takeoffs → consultant reviews, corrects, confirms → quantities push directly into Section B and C.
projinn.in/consultant/estimate/CIQ-2026-0053/drawing-analysis
DLF Corporate Park · Ground Floor Plan
GF_Plan_v3.pdf · Scale 1:100
2D
3D
RECEPTION 142 sqm 16.0m OPEN PLAN OFFICE 186 sqm BOARD ROOM 84 sqm MTG 1 36 sqm MTG 2 36 sqm CORE Lift+Stairs CORRIDOR — 66m × 4m = 264 sqm OPEN PLAN OFFICE 2 206 sqm CABIN 1 28 sqm CABIN 2 34 sqm SERVER 18 sqm PANTRY 26 sqm WC (M) 14 sqm WC (F) 14 sqm CORE 2 OPEN PLAN 3 134 sqm N 0 8m AI 96% conf
Analysis complete · 23 elements detected
Search by room or element type
Select Breakdown
Hide all
Select all
Room Zones — Auto-detected
Open Plan Office
3 zones detected
526 sqm
total
Reception / Lobby
1 zone · Ground floor
142 sqm
Board Room + Meeting
3 rooms · Currently selected
156 sqm
Director Cabins
2 cabins detected
62 sqm
Toilets M / F
2 blocks · Per floor
28 sqm
Pantry + Server
2 rooms · Utility
44 sqm
Lift Core + Staircase
2 cores · All floors
148 sqm
Corridor / Circulation
Main + secondary · All floors
264 sqm
Structural Elements
Interior Framing (230mm)
Internal partition walls
284 Rm
Door Openings (0.9–1.2m)
19 detected · 4 fire doors
23 Nos
Glazing / Windows
Curtain wall + punch windows
186 Sqm
Flooring Area (gross)
Auto-summed from zones AI
1,370 Sqm
Paint Finish — Needs review
Boundary unclear in drawing · Verify manually
? Sqm
21 / 23 elements confirmed · 1 needs manual review
Room areas → Section B · Wall/door/glazing counts → Section C BOM
3
Estimate Builder — Section C: BOM with Rate DB Lookup
Technical Consultant Consultant types a material name → rate DB suggests spec + current quarterly rate → consultant sets quantity → amount auto-calculates. Active row highlighted amber. Rate DB panel slides in on right.
projinn.in/consultant/estimate/CIQ-2026-0044/section-c
Estimate Sections
A · Project Summary
B · Area Statement
C · Bill of Materials
D · Labour
E · Indirect
F · Summary
Section C total
₹4,21,38,000
Auto-saved 1m ago
Section C — Bill of Materials  civil_structural
Description Specification Unit Qty Rate ₹ Amount ₹
Substructure
Excavation & earthwork Manual + JCB, all lifts Cu.m 380 420 1,59,600
PCC Bed (1:4:8) M15 grade, 100mm thick Cu.m 42 4,800 2,01,600
Rate DB Suggestions
Chlorpyrifos emulsion 1%
Sqm · ₹42 · CHD-2026-Q2
Imidacloprid 0.5%
Sqm · ₹58 · CHD-2026-Q2
Bifenthrin pre-construction
Sqm · ₹65 · CHD-2026-Q2
from Rate DB
 77,280
RCC Foundation (isolated) M25 + Fe500 HYSD Cu.m 186 12,400 23,06,400
Superstructure — RCC Frame
RCC Columns M25, Fe500 @ 130 kg/m³ Cu.m 112 14,200 15,90,400
RCC Beams + Slab M25, Fe500 @ 95 kg/m³ Cu.m 284 13,600 38,62,400
Rate DB: CHD-2026-Q2 · Valid to 30 Sep 2026 · 847 line items
4
Consultant — PM Comment Resolution Panel
Consultant + PM PM adds inline comments per section. Consultant sees exact row flagged, reads comment, edits, marks resolved. Revision cycle tracked. PM re-reviews after all resolved.
projinn.in/consultant/estimate/CIQ-2026-0043/review
PM Review — Revision 1
Arvind Mehta · 3 comments · 20 Jun 2026
Section C · Row 14 Open
"Waterproofing qty looks low for a basement floor area of 3,200 sqm. Recalculate with 10% wastage."
Waterproofing — Raft Slab
Section C · Row 28 Open
"Use Ultratech OPC 53 rate for this project — client specified premium brand. Update spec."
Cement supply — all floors
Section E · Overhead % Resolved
"Use 12% overhead for commercial, not 10%."
1 of 3 resolved
PM Comment — Section C · Row 14
"Waterproofing qty looks low for a basement floor area of 3,200 sqm. Recalculate with 10% wastage factor applied."
Arvind Mehta · 20 Jun 2026 14:32
Flagged Row — C-14 · Waterproofing Raft Slab
was 3,200 · +10%
65,12,000
was ₹59,20,000
5
Consultant — Final Review & Submit to PM
Technical Consultant All 6 sections complete. Consultant reviews section totals, confirms accuracy declaration, submits to PM for final QC. System auto-generates PDF preview once PM approves.
projinn.in/consultant/estimate/CIQ-2026-0053/submit
All sections complete
Review totals before submitting to PM for final QC.
A — Project Summary
Auto-pulled from submission · 100% complete
Auto
B — Area Statement
3 floors + basement · 14,200 sqft total
Done
C — Bill of Materials
214 line items · 8 categories · CHD-2026-Q2 rates
₹4.21Cr
D — Labour Estimate
6 phases · 42 skilled + 28 unskilled avg headcount
₹94.2L
E — Indirect Costs
Overhead 12% · Contingency 5% · Mobilisation
₹62.8L
F — Summary Sheet
Auto-generated · Pie chart · 60-day validity
Auto
Grand Total Estimate
₹5,78,00,000
Rate DB
CHD-2026-Q2
Valid to 30 Sep 2026
Accuracy declaration
Required before submission. This declaration is logged with your consultant ID and submission timestamp.
I, Priya Mehrotra (QS Consultant, Projinn), confirm that:

All material quantities are derived from submitted drawings
All rates are from Rate DB CHD-2026-Q2 unless manually noted
Sections A–F have been reviewed for arithmetic accuracy
I am not affiliated with any contractor on this project
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Projinn Technical Estimate
CIQ-2026-0053 · DLF Corporate Park · ₹5.78 Crore
Valid: 24 Jun 2026 – 22 Aug 2026 · CHD-2026-Q2
DRAFT — Pending PM Approval
PM will be notified immediately. PDF generates automatically on approval.
Data Model
Data Attributes — 5 Entities · 112 Fields
Client (18) · Project (38) · Contractor (22) · Bid (20) · Payment (14). Every field is used — no vanity attributes.
18
Client fields
38
Project fields
22
Contractor fields
20 + 14
Bid + Payment fields
Full attribute tables with field names (JetBrains Mono), types, required/optional/auto flags, and notes are documented in the detailed Data Attributes blueprint. Key design rule: every field has a named downstream use — no fields collected "just in case."
Technical Features
37 Features · 7 Modules
Web only. 5-month build. 4-person team. No referral. No basic support ticketing. Every feature tied to a role and build classification.
37
Total features
7
Modules
27
MVP features
10
Post-MVP in scope
Module 1 — Auth (6 features)
Email + Mobile OTP registration · Login (OTP + password) · RBAC (3 portals) · Forgot password · Account lockout + alerts · Profile management
Module 2 — Project Submission (6 features)
Service selection Step 0 · 5-step form + validation · S3 file upload · Auto-save (drafts) · Duplicate detection · Submission confirmation + reference
Module 3 — Estimate Builder Internal (7 features)
Sections A–F form · Material rate database · PM fee quoting + assignment · PM QC review + inline comments · PDF auto-generation · Teaser generation (Option B) · Delivery deadline alerts
Module 4 — Bidding Engine (8 features)
Contractor matching algorithm · Bid invitation + teaser + Not Interested · Bid fee payment + estimate unlock · Structured bid form · Bid window management · Bid comparison dashboard · In-platform messaging · Contractor selection + award
Module 5 — Payments + GST (5 features)
Estimate fee payment · Bid fee payment · GST invoice auto-generation · Refund processing · Payment history ledger (CSV export)
Module 6 — Dashboards (5 features)
Client portal · Contractor portal · Admin Kanban (10 lifecycle stages) · Admin revenue dashboard · Contractor verification queue
Module 7 — Notifications (24 events · 3 channels)
Email (all events) · SMS (critical only: MSG91) · Dashboard bell (everything). 24 events covering client lifecycle, contractor bidding, admin alerts, and payment confirmations.
Notification System
24 Events · 3 Channels
Email always. SMS for critical only. Dashboard bell for everything. Transactional only — no marketing, no digest emails, no promotional push.
Email
All 24 events. Sent via SendGrid. Branded transactional template per event. Every client and contractor action triggers a confirmation email.
SMS — Critical Only
8 events. Via MSG91. Fee quote, estimate delivered, bid invitation, contractor selected, payment failed. Character limit enforced — no long SMS.
Dashboard Bell
All 24 events. Unread count badge. Click → notification detail. All three portals (client / contractor / admin) have bell notifications.
EventClientContractorAdmin / PM
Client Lifecycle
Project SubmittedEmail SMS—Dashboard
Estimate Fee Quote SentEmail SMS Bell——
Fee PaidEmail (receipt)—Dashboard
Fee = ₹0 (Free Project)Email—Dashboard
Quote Expired (5 days)Email SMS—Dashboard
Estimate In ProgressEmail——
Estimate DeliveredEmail SMS Bell——
Option B Upgrade PromptIn-app only—Tracking
Option B Upgrade PaidEmail + PDF link—Dashboard
Admin / Internal Alerts
Deadline Warning (80% elapsed)——Email to PM Alert
Estimate Late — Proactive DelayEmail (revised date)——
Low Bid Count (<3 by Day 5)——Email to PM Alert
Contractor Bidding Lifecycle
Bid Invitation Sent—Email SMS Bell—
Bid Fee Paid—Email + GST invoiceDashboard
Bid Submitted—Email (ref #)Dashboard
Bid Window Closing (24h left)EmailEmailDashboard
Bid Window ExtendedEmailEmail SMS—
Bid Window ClosedEmail SMS—Dashboard
Contractor Selected (Winner)—Email SMS Contact revealedDashboard
Contractor Not Selected—Email—
Project CancelledEmailEmail (all bidders)Dashboard
Contractor Verified—Email SMS—
Contractor Rejected—Email (reason)—
Payment FailedEmail SMSEmail SMS—
Platform Expansion · Phase 1 → Phase 2+
Growth Architecture
The core two-stream model funds Phase 1. Everything below is built on top of the same trust infrastructure — the Technical Estimate. Each stream is a deliberate layer: low execution cost, high strategic value, compounding network effect.
Phase tag: Phase 1 Optional Phase 2 Phase 3+ Recurring
Second Opinion
Estimate audit + contractor quote review
Phase 1 Optional
Client arrives with an existing contractor quote or their own estimate. Projinn reviews it against current market rates and our methodology — line by line. Returns a written audit: what's accurate, what's inflated, what's missing. No drawings required if already available. Natural entry point for clients who didn't come through the main funnel — lowest friction acquisition on the platform.
Revenue
₹8–15K
Flat fee per review + 18% GST
Delivery cost
Very Low
Review only — no full estimate built
Upsell path: "Your estimate has gaps — get the full Projinn Technical Estimate for ₹35K"
Deliverable: 4-page audit report PDF — section-wise rating, variance flags, recommendation
No site visit needed · 48-72hr turnaround · Consultant does the review
Project Rescue
Stalled, incomplete & abandoned sites
Phase 2
India has hundreds of thousands of stalled construction sites — no contractor, funds exhausted, dispute, death of owner, or fraud. Nobody offers this service at scale. Client submits site photos, existing drawings, and a work-done statement. Projinn produces a Cost-to-Complete Report. A specialist rescue bid pool (contractors with a "rescue" flag) then bids for completion-only scope.
Revenue
₹18–40K
Assessment fee + rescue bid fees
Differentiation
Unique in India
No organised player in this segment
Deliverable: Cost-to-Complete Report — what's done, at-risk, and the completion budget
Site visit required — needs local civil team (1 person) in Phase 2 ops
Contractor pool: "Rescue-certified" flag — tracks completion-only project history
Construction Finance
Loan provider referrals + verified estimate as collateral
Phase 2
Banks, NBFCs, and HFCs (HDFC, LIC HFL, Piramal, Bajaj) need pre-qualified borrowers with credible project cost documentation. A Projinn Technical Estimate is independently produced, methodology-backed, and 60-day valid — exactly what a lender's credit committee wants. Phase 1: curated directory ("These lenders accept Projinn estimates"). Phase 2: formal referral fees per sanctioned lead.
Revenue model
₹3–10K / lead
Or 0.1–0.25% of sanctioned amount
Avg loan size
₹3–6Cr
Backed by verified Projinn estimate
Target lenders: HDFC, LIC HFL, Piramal Capital, Bajaj Housing Finance, SBI Realty Loans
Phase 1 start: "Lender Directory" badge on estimates — no BD cost, establishes the channel
Moat: estimates become de-facto standard documentation for Chandigarh construction loans
Consultant Marketplace
Architect + structural engineer empanelment
Phase 2
A client who wants to build doesn't have drawings yet. Projinn becomes the starting point — not just for estimates, but for the entire pre-construction process. Vetted architects and structural engineers on the platform take the brief, produce the drawings, and the client then flows into the main estimate funnel. Pre-funnel acquisition that creates a captive estimate lead.
Revenue
10–15% referral
Of consultant's fee for referred project
Strategic value
Full funnel
Captures client before drawings exist
Vetting: COA-registered architects, IEI structural engineers — verified credentials only
Client gets 3 matched profiles — brief, portfolio, rate range — not an open directory
Phase 1 prep: empanel 10–15 Chandigarh-based consultants quietly before launch
Estimate Extension
Rate refresh + 60-day validity renewal
Phase 1 Optional Recurring
Estimates expire in 60 days — material rates move, especially steel and cement. Client who hasn't selected a contractor yet can pay to extend validity with a current-quarter rate refresh. Pure digital — no new drawings, no site visit, no new estimate build. Consultant spends 2–3 hours updating rate cells. Near-100% margin on every extension.
Fee
₹5–8K
Per 60-day extension + 18% GST
Margin
~95%
Marginal consultant time only
Auto-triggered: email at Day 50 "Your estimate expires in 10 days — extend for ₹5,900"
New PDF generated with updated date, revised rates, and "Extended" watermark
Clients who extended once are 3× more likely to convert to full bid process
Site Progress Monitor
Monthly site report vs original estimate
Phase 2 Recurring
After contractor selection, the client's relationship with Projinn shouldn't end. A site visit each month by a Projinn civil engineer — photos, progress against the original estimate's phase plan, cost-to-date vs estimate, and any variance flags. First recurring revenue stream on the platform. Builds deep post-selection trust and creates retention data.
Monthly fee
₹8–15K
Per site per month · 12–24 month avg
LTV per client
₹96K–3.6L
12–24 months of monitoring
Deliverable: 6-page PDF monthly report — photos, milestone checklist vs plan, cost tracking
Phase 2 ops: empanel part-time site engineers in Chandigarh/Mohali/Panchkula
Creates an early-warning system: contractor delay flagged against estimate timeline
Rate DB Licensing
Chandigarh construction rate database as a product
Phase 3+
By Phase 2, Projinn will have built and updated the most granular, verified construction rate database in the Chandigarh–Mohali–Panchkula market — refreshed every quarter. This data is independently valuable: architects, PMC firms, government quantity surveyors, and other QS firms all need it. It's a side-effect of the core business — the cost to produce is zero.
API access fee
₹2–5K
per month
Data download
₹8–18K
quarterly CSV
Target buyers
Arch / PMC
firms + gov depts
Material Procurement
Bulk order facilitation for contractors
Phase 3+
Contractor has won a ₹6Cr project. They need to procure cement (ACC / UltraTech), steel (TATA / JSW), and sand in bulk. Projinn aggregates demand across all active projects, negotiates volume pricing, and facilitates orders — taking margin on the trade. The BOM is already built — Projinn knows exactly what quantities are needed. Highest complexity, highest potential margin.
Margin model
2–5%
on material order value
Requirement
Supply chain
Supplier BD + ops setup
Revenue Stack — All 8 Streams
Ordered by execution readiness. Each row is additive — no stream cannibalises another.
1
Estimate Document Fee
₹25–50K per project
Client pays
LIVE
2
Bid Submission Fee
₹1K–7.5K per bid
Contractor pays
LIVE
3
Second Opinion
₹8–15K per review
Client pays
P1 OPT
4
Estimate Validity Extension
₹5–8K per extension
Client pays
P1 OPT
5
Construction Finance Referral
₹3–10K / lead
Lender pays
PHASE 2
6
Site Progress Monitoring
₹8–15K / month
Client pays
PHASE 2
7
Project Rescue
₹18–40K per project
Client pays
PHASE 2
8
Material Procurement
2–5% of order value
Contractor margin
PHASE 3
Platform Summary
The Brief
Everything Projinn is — distilled to one page.
Projinn
Projinn is a three-sided construction technology marketplace for India's ₹2Cr+ private construction market. It connects project owners, an internal QS team, and verified contractors through a single, independently produced document — the Technical Estimate.
Every project on the platform flows through the same six-section Technical Estimate — area statement, bill of materials, labour, MEP, indirect costs, and summary — built by qualified consultants and approved by a civil PM before delivery. The estimate is the product. Everything else is architecture around it.
Phase 1 — Chandigarh Pilot
6 months · Web only · ₹2Cr+ private projects
50 project target · Break-even Month 3
Chandigarh–Mohali–Panchkula geography
PM Civil + QS team + 4-person IT build
Two Revenue Streams · Phase 1
Stream 1 — Estimate fee: ₹25–50K · Client pays
Stream 2 — Bid fee: ₹1K–7.5K · Contractor pays
₹63K revenue per avg ₹8Cr project
No subscriptions · No escrow · No success fee
Phase 1 proves one thing: that project owners in Tricity will pay for a credible, independently produced estimate — and that contractors will pay to access it. If both behaviours are confirmed at 50 projects, the model scales to Delhi NCR, Mumbai, Bengaluru, and Hyderabad with the same two-stream core, expanded by the Growth Architecture streams that require no change to the core product.
₹5–6L Cr
TAM · Phase 1 · ₹2Cr+ Private Construction · India
₹31.5L
Phase 1 SAM · 50 projects · 6 months · Chandigarh
Month 3
Break-even · 2-stream model · fixed + variable cost covered
8 Streams
Full Growth Architecture · Phase 1 through Phase 3+
Phase Roadmap
Phase 1 · 0–6 months
Chandigarh–Mohali–Panchkula
50 projects · ₹2Cr+ minimum
Streams 1 + 2 live
Web only · Break-even Month 3
Streams 3 + 4 optional if ops ready
Phase 2 · 6–18 months
Delhi NCR expansion
200+ projects target
Project Rescue operational
Construction Finance channel live
Site Progress Monitoring launched
Consultant Marketplace empanelled
Phase 3+ · 18+ months
Mumbai · Bengaluru · Hyderabad
Rate DB licensing as product
Material procurement channel
Series A fundraise basis P2 metrics
National standard for construction
estimates in private sector
Projinn
Phase 1 · Chandigarh · 6 months · 50 projects · ₹2Cr+ minimum
Platform Blueprint · 2026