House Extensions in Hounslow
Hounslow covers the TW3–TW8 postcodes including Hounslow town, Isleworth, Brentford and Heston. The interwar semi-detached stock generates consistent extension and loft conversion work.
rcbGroup projectHouse Extensions in Hounslow — what to expect
Hounslow's interwar semis have good plot widths for rear and side extensions. 4–6m rear extensions are the most common. Side extensions into the garage or side passage are popular. The TW3 and TW4 areas have a price-conscious but active extension market.
Hounslow property types
Interwar and post-war semi-detached and terraced houses, Victorian terraces near the town centre. The property type affects which extension approach works best — we'll advise from the first call.
Common extension projects we deliver in Hounslow
How we deliver extension projects in Hounslow
Project review & site visit
We look at your Hounslow property and any drawings you have, explain what's possible, the likely planning and Building Regulations route, and the risks — 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.
Itemised scope and price
You receive a detailed, itemised scope of works and an agreed price before we start, with exclusions and provisional sums shown. Variations are agreed in writing before any additional work begins.
Managed delivery
We coordinate trades, procurement and site logistics, with a single point of contact throughout — working to the requirements of London Borough of Hounslow and Building Control.
Sign-off & handover
We coordinate the Building Control inspections needed for sign-off, then hand over your project documents — completion certificate, guarantees and manuals as applicable — with snagging and aftercare as set out in your contract.
Planning in Hounslow
Hounslow has conservation areas in Isleworth, Brentford and parts of Hounslow town. Brentford waterfront has specific planning considerations. Verify with LBHounslow Planning.
Why choose rcbGroup in Hounslow?
Local context
We plan around London Borough of Hounslow's requirements and the typical property types in Hounslow — interwar and post-war semi-detached and terraced houses, victorian terraces near the town centre.
Price agreed before start
Your price is agreed and documented before work starts. Scope, exclusions, and assumptions set out in writing.
One accountable team
Trades, suppliers and inspections coordinated by one team — with CDM Principal Contractor duties taken on where we are appointed to build.
Written project documentation
A written contract before work starts, a Construction Phase Plan where we are appointed to build, and the completion certificate and handover documents gathered for you at the end.
Independently reviewed
Rated 10/10 from 117+ reviews on Checkatrade, where you can read them for yourself.
Support from planning to aftercare
We don't just build — we can support design development, planning applications, and pre-construction cost planning.
Planning an extension in Hounslow?
Pick whatever suits you. We'll look at what you have (drawings, photos or quotes) and tell you honestly what the next step should be.
Prefer to phone? Call +44 7359 872594.
Postcodes served: Hounslow
Not sure if we cover your street? Get in touch — we'll confirm in minutes.
Start your Hounslow project
Project review. Clear scope. Agreed price. One team from first call to Building Control sign-off.
Or call us on +44 7359 872594