Your independent second opinion on any build project
MyBuildAlly gives homeowners the confidence to evaluate builder quotes — checking price, scope coverage, and design completeness with independent data and regional benchmarks.
Our Mission
Home extensions and renovations are major investments, yet most homeowners have no way to judge whether a quote is fairly priced, fully scoped, or missing critical items. We're changing that by giving you clear, independent analysis based on what projects like yours actually cost.
Our goal is simple: help homeowners make informed decisions by understanding what their project should reasonably cost, whether builder quotes are competitive, and which questions to ask before signing a contract.
How It Works
Describe Your Project
Tell us about your extension or renovation: type, size, location, and specifications.
Get Your Estimate
We calculate a cost range based on industry data and regional pricing factors.
Compare Quotes
Upload builder quotes to see how they compare on price, scope coverage, and completeness.
Our Data Sources
Our estimates are built from multiple authoritative sources:
As more homeowners share their project outcomes, our estimates become more accurate for everyone. This is the power of our community-driven data flywheel.
Better Estimates, Together
As homeowners share their project outcomes, our estimates become more accurate for everyone. When you complete your project, consider contributing:
- Your final costs compared to original quotes
- Which procurement route you chose (builder vs. direct trades)
- What you'd do differently next time
All contributions are anonymised. We store aggregated regional data — never your name, address, or contact details unless you explicitly provide them.
Built With Trust
Your data, stored securely
Anonymous estimates are processed in your browser and not stored. Account project data is stored securely with enterprise-grade encryption — never your name, address, or contact details unless you provide them.
Independent analysis
We don't sell leads to builders
Transparent methodology
Our pricing logic is documented
Who We Are
MyBuildAlly was founded by a homeowner who went through the stress of managing a major build project first-hand. After receiving wildly different quotes with no way to compare them fairly, the idea was born: give every homeowner access to the same cost data and analysis tools that professionals use.
We bring engineering precision to building cost analysis — because your biggest investment deserves better than guesswork. Our background spans avionics engineering, cyber security, and product development — so we take accuracy, privacy, and user trust seriously.
Company Information
MyBuildAlly is a trading name of MyBuildAlly Ltd.
Registered in England & Wales. Company No: 17019427.
Your data is processed in the EU (Frankfurt) and stored with enterprise-grade encryption.
Contact: info@mybuildally.co.uk
Explore MyBuildAlly
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