House Extensions in Catford
Catford's interwar semi-detached stock is well-suited to extensions and loft conversions. Rising property values in SE6 have driven increased investment in quality renovation and extension work.
House Extensions in Catford — what to expect
SE6 interwar semis have good plot widths for rear and side extensions. Single-storey rear extensions of 4–6m are the most common. Side extensions on detached and semi-detached properties are viable in many streets. The SE6 market is price-conscious but expectation of quality finish is growing.
Catford property types
Interwar semi-detached, Victorian terraces near the town centre, post-war estates. The property type affects which extensions approach works best — we'll advise from the first call.
Common extensions projects we deliver in Catford
How we deliver extensions in Catford
Free consultation & survey
We visit your Catford 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 Catford 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 Catford
SE6 falls within the London Borough of Lewisham. Conservation areas apply in parts of Catford — verify with LBL Planning before proceeding with extensions or loft conversions.
Why choose RCB Design & Build in Catford?
Local knowledge
We work in Catford 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 Catford
Start your Catford project
Free consultation. Fixed price. 25-year warranty. One team from first call to final sign-off.
Or call us on 07359 872594