PaySubTrack

Automate subcontractor payments to crush disputes and delays

Score: 7.2/10MWMedium BuildReady to Spawn
Brand Colors

The Opportunity

Problem

Enterprise construction teams face chaotic onboarding and management of subcontractors without a centralized platform, resulting in payment disputes and project delays.

Solution

PaySubTrack centralizes invoice submission, milestone verification, and lien waiver collection for seamless payments. Project managers approve work via photo uploads and progress reports, triggering instant payouts. This eliminates payment arguments by creating an audit trail tied to project milestones.

Target Audience

Enterprise construction project managers overseeing large-scale projects with multiple subcontractors

Differentiator

Built-in lien waiver automation integrated with payments, reducing legal risks

Brand Voice

professional

Features

Invoice Submission

must-have15h

Subs submit invoices with photo proof

Milestone Verification

must-have12h

Managers confirm work completion digitally

Payment Approval Workflow

must-have18h

Multi-step approval with notifications

Lien Waiver Collection

must-have20h

Auto-generate and collect waivers pre-payment

Audit Trail Dashboard

must-have10h

Full history of payments and disputes

Recurring Invoices

nice-to-have8h

Set up weekly/monthly for ongoing subs

Dispute Resolution

nice-to-have12h

Flag issues with comment threads

Export Reports

nice-to-have6h

PDF/CSV for accounting

Total Build Time: 101 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
emailtextNo
is_managerboolNo

Relationships:

  • projects.user_id -> users.id

projects

ColumnTypeNullable
iduuidNo
nametextNo
user_iduuidNo

Relationships:

  • invoices.project_id -> projects.id

invoices

ColumnTypeNullable
iduuidNo
project_iduuidNo
sub_nametextNo
amountintNo
statustextNo

Relationships:

  • waivers.invoice_id -> invoices.id

waivers

ColumnTypeNullable
iduuidNo
invoice_iduuidNo
signed_urltextYes

API Endpoints

POST
/api/invoices

Submit invoice

🔒 Auth Required
PUT
/api/invoices/:id/verify

Verify and approve

🔒 Auth Required
POST
/api/waivers/:id/sign

Generate/sign waiver

🔒 Auth Required
POST
/api/payments

Trigger Stripe payout

🔒 Auth Required

Tech Stack

Frontend
Next.js 14 + Tailwind CSS + shadcn/ui
Backend
Next.js API + Supabase
Database
Supabase Postgres
Auth
Supabase Auth
Payments
Stripe Connect
Hosting
Vercel
Additional Tools
Supabase Storage for photos

Build Timeline

Week 1: Setup and invoices

20h
  • Auth
  • Invoice CRUD

Week 2: Verification flow

25h
  • Photo upload
  • Approvals

Week 3: Waivers and payments

30h
  • Waiver gen
  • Stripe

Week 4: Dashboard and reports

20h
  • Audit view
  • Landing

Week 5: Notifications

15h
  • Emails
  • Tiers

Week 6: Polish and test

10h
  • Bug fixes
Total Timeline: 6 weeks • 140 hours

Pricing Tiers

Free

$0/mo

No waivers

  • 1 project
  • 5 invoices/mo

Pro

$20/mo
  • Unlimited
  • Waivers
  • Stripe payouts

Enterprise

$199/mo
  • All + API access
  • Multi-company

Revenue Projections

MonthUsersConversionMRRARR
Month 1404%$32$384
Month 62508%$400$4,800

Unit Economics

$50
CAC
$600
LTV
6%
Churn
88%
Margin
LTV:CAC Ratio: 12.0xExcellent!

Landing Page Copy

Fix Payment Disputes Forever

Automated invoicing, verification, and waivers for construction teams

Feature Highlights

Proof-of-work photos
Instant approvals
Lien waiver magic
Full audit trails

Social Proof (Placeholders)

"'Cut disputes by 90%' – Foreman Inc."
"'Payments on time, every time' – Mega Builds"

First Three Customers

Post in construction Facebook groups offering free Pro for first month; DM mid-size GCs on LinkedIn; partner with local sub networks for intros.

Launch Channels

Product Huntr/SaaSConstruction Dive forum

SEO Keywords

construction subcontractor paymentsinvoice management constructionlien waiver software

Competitive Analysis

Autodesk BIM 360

autodesk.com
$50+/user/mo
Strength

CAD integration

Weakness

Weak payment focus

Our Advantage

Payments-first, cheaper

🏰 Moat Strategy

Network effects as more subs join for faster payments

⏰ Why Now?

Inflation driving payment urgency in construction

Risks & Mitigation

legalmedium severity

Lien law variations by state

Mitigation

Start in one state, add templates

financiallow severity

Stripe fees eat margins

Mitigation

Pass-through pricing

Validation Roadmap

pre-build5 days

Survey PMs on payment pains

Success: Validate disputes top issue

mvp35 days

Beta with 3 teams

Success: Reduce disputes 50%

Pivot Options

  • Pure invoicing app
  • Expand to vendor payments

Quick Stats

Build Time
140h
Target MRR (6 mo)
$4,000
Market Size
$5000.0M
Features
8
Database Tables
4
API Endpoints
4