Construction AI
“Can a solo contractor-founder, armed with AI coding tools, ship a tier-one construction back-office platform priced for SMB contractors?”
Founded2024
HQGerrards Cross, England, UK
FoundersStephen Mckenna
IndustryVertical SaaS / Construction
The story
Construction AI is a UK vertical-SaaS platform for contractors, built by a construction manager (Stephen Mckenna, MCIOB) using AI coding tools over roughly 12 months. It bundles tenders, project management, RAMS, site management, and financials — including UK Construction Act-compliant payment applications and CVR — under one canonical data model exposed via REST API and MCP. There is no evidence of external funding; the company is priced as a self-serve SaaS from £130/month with a BYOK model for the AI assistant (customers bring their own Claude API key, avoiding AI markup).
Last 12 months
Product timeline
2024
Construction AI Ltd incorporated in the UK (Companies House number 16208350)· founding
2026
Founder publishes account of building a multi-tenant SaaS with 27 tools, vector search, and row-level security across 186 tables· product
2026
Public REST API and MCP server launched, with OAuth 2.1 / bearer token auth and a fine-grained scope catalogue· product
The stack
0 layers disclosed in Construction AI’s embedded-finance stack
Accounting gap: significant