Havnwright
Free UK Renovation Tools & Guidance
A free renovation-tools website for UK homeowners: a cost calculator built on real 2026 prices, a planning permission checker, retrofit and grants guidance, and renovation inspiration. No account needed. The contractor side of the business lives in a dedicated mobile app.
The Problem
Home renovation starts with expensive unknowns. What will it actually cost? Do I need planning permission? What grants exist? Getting those answers usually means phone calls, quotes, and guesswork before a homeowner can even decide whether to start.
The Solution
Answer the expensive questions upfront, for free, with no signup: a cost calculator grounded in real UK price data, a planning permission checker, retrofit and grants guidance, and real renovation inspiration, all backed by a content engine that keeps the guidance current.
The Story
Where it started
Born from first-hand frustration with the home renovation process. There was no single place where homeowners could get honest answers about cost, permission, and funding without phone calls and guesswork. Havnwright was founded on 26 September 2025 to change that, and has evolved from a dashboard platform into a free-tools front door as the product found its shape.
Where it is now
Live at havnwright.com as a free, no-signup tools and guidance site: the cost calculator runs on real 2026 UK prices, the planning checker and retrofit and grants guidance answer the questions homeowners actually start with, and a content engine with 20+ published articles drives organic traffic. The contractor product moved fully into the dedicated mobile app, where over a thousand contractors run their business.
Where it's going
Growing the tools and the content engine, then connecting the two sides: homeowners who plan on the site finding the contractors who run on the app. Beyond that, a review and reputation system and AI-driven project cost estimation.
Key Highlights
Free renovation cost calculator with real 2026 UK price data
Planning permission checker for UK projects
Retrofit and grants guidance
Renovation inspiration and real project references
Blog with 20+ SEO-optimised articles on home renovation
Companion contractor mobile app on iOS and Android
Tech Stack
By the Numbers
Cost calculator on real 2026 UK prices
Planning permission checker
Retrofit + grants guidance
No account needed
Have questions about Havnwright?
Happy to discuss the product, the architecture behind it, or how I ended up building it. If you are working on something related, get in touch.