House Extensions in Dagenham
Dagenham's housing stock is dominated by the Becontree Estate — one of the largest council housing estates ever built, now largely in private ownership. Wide plots and relatively low property prices make extension and conversion projects strong value.
House Extensions in Dagenham — what to expect
The Becontree Estate semi-detached houses have substantial rear gardens and standard plot widths that work well for rear extensions. Side return extensions and garage conversions are popular. The lower storey-heights on some estate properties require careful design to achieve good light.
Dagenham property types
LCC cottage estate housing, post-war semis, bungalows. The property type affects which extensions approach works best — we'll advise from the first call.
Common extensions projects we deliver in Dagenham
How we deliver extensions in Dagenham
Free consultation & survey
We visit your Dagenham 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 Dagenham 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 Dagenham
RM8, RM9 and RM10 fall within the London Borough of Barking & Dagenham. HMO conversion restrictions apply in parts of the borough under Article 4.
Why choose RCB Design & Build in Dagenham?
Local knowledge
We work in Dagenham 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 Dagenham
Start your Dagenham project
Free consultation. Fixed price. 25-year warranty. One team from first call to final sign-off.
Or call us on 07359 872594