SubFlow

Streamlined contracts, payments, and tracking for hiring remote construction subs

Score: 7.4/10CanadaMedium BuildReady to Spawn
Brand Colors

The Opportunity

Problem

Construction professionals face chaos in hiring and managing remote subcontractors without reliable vetting and performance tracking tools.

Solution

SubFlow automates end-to-end workflow from job post to payment release based on milestones. Includes template contracts, milestone invoicing, and integrated tracking to manage remote subs without chaos. Ensures payments only on verified completion for trust.

Target Audience

Construction project managers and general contractors hiring remote subcontractors for projects

Differentiator

Payments gated by performance proofs, specialized for construction contracts

Brand Voice

friendly

Features

Job Posting

must-have15h

Post jobs to attract remote subs

Contract Generator

must-have20h

Auto-generate construction contracts from templates

Milestone Payments

must-have25h

Release payments on milestone approval

Integrated Tracking

must-have18h

Link milestones to proofs for approval

Invoice Management

must-have15h

Auto-invoice and track payments

Workflow Dashboard

must-have20h

Overview of all active contracts/payments

E-Signatures

nice-to-have12h

Digital signing for contracts

Bulk Job Posts

nice-to-have10h

Post multiple jobs at once

Dispute Resolution

nice-to-have8h

Simple escalation for issues

Total Build Time: 143 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
emailtextNo
stripe_idtextYes
created_attimestampNo

Relationships:

  • jobs.user_id -> users.id

jobs

ColumnTypeNullable
iduuidNo
user_iduuidNo
titletextNo
budgetintNo
statustextNo

Relationships:

  • contracts.job_id -> jobs.id

contracts

ColumnTypeNullable
iduuidNo
job_iduuidNo
sub_user_iduuidNo
signed_attimestampYes
amountintNo

Relationships:

  • milestones.contract_id -> contracts.id

milestones

ColumnTypeNullable
iduuidNo
contract_iduuidNo
descriptiontextNo
valueintNo
statustextNo
proof_urltextYes

API Endpoints

POST
/api/jobs

Post job

🔒 Auth Required
POST
/api/contracts

Generate contract

🔒 Auth Required
POST
/api/milestones/:id/approve

Approve and pay milestone

🔒 Auth Required
GET
/api/dashboard

Workflow overview

🔒 Auth Required
POST
/api/webhooks/stripe

Handle payment events

Tech Stack

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

Build Timeline

Week 1: Auth and jobs

35h
  • Setup
  • Job posting

Week 2: Contracts

40h
  • Contract gen
  • E-sign

Week 3: Milestones/payments

50h
  • Milestones
  • Stripe integration

Week 4: Dashboard/tracking

40h
  • Proofs
  • Dashboard

Week 5: Polish

30h
  • Nice-to-haves
  • Testing
Total Timeline: 5 weeks • 195 hours

Pricing Tiers

Free

$0/mo

No payments

  • 1 job
  • Basic contracts

Pro

$25/mo

$10k/mo payments

  • Unlimited jobs
  • Payments
  • Tracking

Enterprise

$99/mo

None

  • All Pro
  • Unlimited payments
  • Priority support

Revenue Projections

MonthUsersConversionMRRARR
Month 11202.5%$75$900
Month 66007%$1,050$12,600

Unit Economics

$20
CAC
$550
LTV
4%
Churn
85%
Margin
LTV:CAC Ratio: 27.5xExcellent!

Landing Page Copy

Hire, Track, Pay Subs in One Flow

Automated contracts, milestone payments, and proofs for hassle-free remote sub management.

Feature Highlights

Auto Contracts
Proof-Gated Payments
Full Workflow Dashboard
E-Sign Ready

Social Proof (Placeholders)

"'Payments only on work done!' - Tom Contractor"
"'Simplified everything.' - Emma Manager"

First Three Customers

Run targeted LinkedIn ads to GCs; offer beta with waived fees to 3 firms from construction directories; leverage personal network in industry.

Launch Channels

Product Huntr/smallbusinessConstruction forumsHacker News

SEO Keywords

construction subcontractor contractsmilestone payments subsremote sub payment softwarehire pay track subcontractors

Competitive Analysis

Fees 5-20%
Strength

Freelancers

Weakness

Not construction-specific

Our Advantage

Tailored contracts/payments

Housecall Pro

housecallpro.com
$49+/mo
Strength

Scheduling

Weakness

Limited subs

Our Advantage

Subcontractor payment focus

🏰 Moat Strategy

Switching costs from contract/payment history

⏰ Why Now?

Gig economy expansion into construction needs secure payment rails

Risks & Mitigation

financialhigh severity

Stripe compliance for payouts

Mitigation

Use Connect early

legalmedium severity

Contract template issues

Mitigation

Lawyer review templates

Validation Roadmap

pre-build7 days

Validate with 10 GC calls

Success: Payment pains confirmed

launch21 days

Pilot with 5 users

Success: 3 paid conversions

Pivot Options

  • Pure invoicing tool
  • Sub escrow service
  • Enterprise procurement

Quick Stats

Build Time
195h
Target MRR (6 mo)
$4,500
Market Size
$4000.0M
Features
9
Database Tables
4
API Endpoints
5