Harvey Maxwell
← All work

EX16

Page 1: Cover
Page 2: Overview
Page 3: The problem
Page 4: The model
Page 5: Joining
Page 6: Scarcity
Page 7: Finding a trade
Page 8: Reviews
Page 9: For members
Page 10: Running it
Page 11: Payments
Page 12: Under the hood
Page 13: Launch
Page 14: Thanks for reading

01 / 14Cover

Year
2026
Role
Product design, full-stack development, payments and launch
Type
Rebuild of a live local platform
Built with
Next.js 16, Supabase, Stripe, Resend, Vercel
Status
Live since 24 Oct 2026

EX16 connects homeowners in Tiverton and the EX16 postcode with local trades. The old site worked like most lead sites: homeowners posted jobs and trades bought tokens to reply, so every job became a race and nobody had a reason to recommend anyone else.

I rebuilt it as a members' collective: up to fifty local businesses, never more than two in the same trade, each paying a flat £50 a month to be listed, reviewed and recommended. The limit is the selling point, so the site shows it everywhere.

I designed and built the whole product, from joining and Stripe billing to the directory, member dashboards, published reviews and an admin view of the collective. Every rule the business depends on is enforced in the database, and listings follow payment with no manual steps.

Highlights

  • Fifty spots, two per trade, £50 a month flat
  • Capacity limits enforced in the database, inside a lock
  • Stripe Billing drives listings: they appear, hide and return as payments do
  • Reviews published good and bad, with any rejection reason recorded

Small on purpose

The limit is the selling point. The database enforces both caps inside a lock, so two people racing for the last plumber spot can't both win it.

50members in total

Every member is one of fifty. The first intake all become numbered founding members.

2per trade, at most

Homeowners choose between you and one other business in your trade, never hundreds.

£50a month, flat

No lead fees and no bidding. Listings follow payment on their own.

Live since 24 October 2026, taking its first founding members.Visit ex16.co.uk ↗

The product

Real pages from the site, shown with illustrative sample businesses.

EX16 on desktop: Home, with every trade in the collective
Home, with every trade in the collective
EX16 on desktop: The directory: paying members only
The directory: paying members only
EX16 on desktop: A member's profile, with enquiry form and reviews
A member's profile, with enquiry form and reviews
EX16 on desktop: Joining, with the live spots counter
Joining, with the live spots counter
EX16 on desktop: The member dashboard
The member dashboard
EX16 on desktop: Admin: spots, income and the review queue
Admin: spots, income and the review queue
EX16 on a phone: Home
Home
EX16 on a phone: Directory
Directory
EX16 on a phone: Profile
Profile
EX16 on a phone: Dashboard
Dashboard