The company
Mavens Building is a London-based contractor working primarily through architectural practices on private residential projects. We exist for the architect who has fought to get a detail right on paper and refuses to watch it die on site.
We speak to architects first and earn the client through them. The work is done by a small permanent team — the team is the portfolio.
We operate with documentation as a discipline, not an afterthought. Every project ships with the paperwork that proves the work, and the company is structured so the architect always has a single point of contact who can answer for the build.
Principles
Excellence. We build to the drawing. Where the build raises a detail that needs a decision, it goes back to the design team — resolved together, recorded, and signed off.
Integrity. We protect the design intent. Cost decisions stay with the design team, made in the open, with us. The contract is the contract.
Accountability. Every project has a single point of contact who answers to the architect. No buck-passing across trades.
Partnership with architects. The architect’s drawing is the contract. Their reputation is the one we protect on site.
Documentation as discipline. Site reports, RAMS, O&M manuals, photographic records — built into the programme, not bolted on at the end.
How we operate
One project lead, one accountable contact. Each project is run by a project lead who reports to the architect weekly. There is one phone number and one inbox the architect uses for the duration.
Pre-priced, pre-programmed. Tender pricing is structured the way the architect needs to read it. Variations and contingency are separated from the contract sum. The programme is published with critical-path items called out before mobilisation.
JCT discipline. We work to JCT contract templates, with £10m public liability cover in place and shareable on request. Risk allocation is explicit and shared, not pushed onto whoever signs last. The quantity surveyor reviews every interim valuation against the contract sum and the variations register.
Documentation as a deliverable. Site reports go to the architect’s preferred format on a weekly cadence. Snagging is logged continuously, not discovered at handover. The O&M pack at the end is the same pack the architect can hand the client without re-formatting.
Monthly financial audit. The finance lead runs an internal monthly audit of every live project’s commercial position — cost-to-complete, variations against budget, retention exposure. The architect and the client are not surprised by the final account.
If this is how you want your project run
Talk to us about your next project — we’ll tell you honestly whether it’s our kind of work. We respond to every enquiry within two working days.
