House Extensions in Brockley
Brockley is a well-regarded South East London neighbourhood in SE4 — home to some of London's best examples of late-Victorian and Edwardian residential architecture, the Brockley Conservation Area, and a strong community. Renovation activity is high across the residential streets. RCB Design & Build delivers extensions, loft conversions, and refurbishments across SE4 including Crofton Park, Ladywell, and Honor Oak Park borders.
House Extensions in Brockley — what to expect
Brockley's late-Victorian and Edwardian terraces have rear garden depths that work well for ground floor rear extensions. The typical 4–5m rear extension opens the narrow rear kitchen into a kitchen-diner with garden access. Side returns are available on end-of-terrace properties in the area's long residential streets. The Brockley Conservation Area covers a significant proportion of SE4 — materials and design require careful attention to Lewisham's conservation area guidance.
Brockley property types
Late-Victorian and Edwardian terraced houses, period conversion flats, some detached and semi-detached properties. The property type affects which extensions approach works best — we'll advise from the first call.
Common extensions projects we deliver in Brockley
How we deliver extensions in Brockley
Free consultation & survey
We visit your Brockley 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 Brockley 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 Brockley
The Brockley Conservation Area covers a large part of SE4 and is managed by Lewisham Council. Material specifications for extensions must match the existing building fabric. Front roof alterations are generally restricted within the conservation area. Standard permitted development applies for rear dormers and extensions in most cases even within conservation areas — but front dormers and cladding changes always require consent.
Why choose RCB Design & Build in Brockley?
Local knowledge
We work in Brockley 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.
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Design-and-build capability
We don't just build — we can support design development, planning applications, and pre-construction cost planning.
Other services in Brockley
Start your Brockley project
Free consultation. Fixed price. 25-year warranty. One team from first call to final sign-off.
Or call us on 07359 872594