House Extensions in Wembley
RCB Design & Build | A2Z Principal Contractors delivers loft conversions, rear extensions, side returns, full house refurbishments, and structural alteration works across Wembley and the surrounding HA0 and HA9 postcode areas. Wembley presents a mix of Edwardian and interwar terraces, 1930s semi-detached houses, and post-war developments — each with different structural characteristics, roof types, and extension potential. Our team understands the local property stock and works with homeowners t
House Extensions in Wembley — what to expect
Whether you're creating an open-plan kitchen-dining room or adding a ground-floor bedroom, rear extensions are one of the most popular projects across HA9. We manage structural openings, glazing, and drainage as part of the full package.
Wembley property types
Period and interwar houses. The property type affects which extensions approach works best — we'll advise from the first call.
Common extensions projects we deliver in Wembley
How we deliver extensions in Wembley
Free consultation & survey
We visit your Wembley property, assess what's possible, and give you a fixed-price indication before you commit to anything. No obligation.
Design & planning support
We work alongside your architect or our preferred design partners to develop drawings that are buildable, compliant, and cost-effective. We flag planning and permitted development options early.
Fixed-price contract
You receive a detailed, itemised scope of works and a fixed price before we start. No surprises mid-project. Variations are agreed in writing before any additional work begins.
Managed delivery
We manage all trades, procurement, and site logistics. You have a single point of contact throughout. Our site teams are familiar with Wembley and the local planning and building control requirements.
Sign-off & warranty
We complete to building regulations standard and obtain all relevant sign-off. Your structural warranty covers up to 25 years.
Planning in Wembley
We don't send a surveyor out on the first call. We qualify every project first — understanding what you want to achieve, what drawings and approvals you have, and whether a site visit is the right next step. This protects your time and ours. Once we understand the project, we can advise on planning
Why choose RCB Design & Build in Wembley?
Local knowledge
We work in Wembley regularly. We know the planning authority, local building control, and the typical property types and challenges in this area.
Fixed-price guarantee
Your price is fixed before work starts. We absorb material and labour cost movements — not you.
Full principal contractor service
We manage every trade, every supplier, every inspection. You deal with one team from start to finish.
25-year structural warranty
All structural work is covered under our long-term warranty. Proof of quality, in writing.
Checkatrade-verified
Over 100 verified reviews from homeowners across London. Independently verified, not self-reported.
Design-and-build capability
We don't just build — we can support design development, planning applications, and pre-construction cost planning.
Other services in Wembley
Start your Wembley project
Free consultation. Fixed price. 25-year warranty. One team from first call to final sign-off.
Or call us on 07359 872594