Architectural design and building-regulation drawings for homeowners, self-builders and developers — the whole journey handled in-house.
★★★★★ Rated 5.0 on Google · Trusted across the two counties
From a small extension on a three-bed semi to a multi-million-pound new build — the same care, whatever the scale.
From the first concept to building-control sign-off, Orange Key handles the whole journey — you're never passed between firms.
House extensions, loft conversions, renovations, new builds and small commercial schemes — concept design through to a planning submission with your local authority.
Explore architectural design →Detailed building-regulation drawings and technical packages, coordinated in-house — everything building control and your contractor need to price and build.
Explore building regulations →We review your property and talk through the type of project you're considering — no obligation.
We develop the design and prepare the drawings for planning permission where it's required.
Detailed building-regulation drawings are prepared so the project can proceed to construction.
One practice from first concept to building-control sign-off — nothing falls between the gaps.
Deep familiarity with Berkshire and Oxfordshire planning authorities and building-control teams.
Plain-English updates and a single point of contact throughout your project.
Design and building regs under one roof — faster, better coordinated, better value.
A contemporary glazed extension to a period family home — concept through to planning.
A sensitive conversion blending period character with modern family living.
A bespoke new-build home designed around its private, wooded setting.
Land Registry–compliant lease and property plans for solicitors, landlords and developers — often needed quickly, and something we prepare regularly.
An extension, a loft conversion, a renovation or a new build in Berkshire or Oxfordshire — we'd be happy to talk it through.