SwiftFix London Extensions
SwiftFix Extensions plans, builds and finishes home extensions that add useful space and value across London. From compact side returns to full‑width rear additions and double storey builds, our accredited team coordinates structure, approvals and crisp finishes. One named project lead keeps you updated with clear timelines and tidy, safe works. Book a free home visit to explore options and start dates.
No surprises, scope locked and your start date confirmed before we begin.
Dust control, protected routes and phased sequencing so key rooms stay usable where possible.
Gas Safe heating engineers and experienced carpenters aligned to structural drawings.
Set‑out checks at every stage for straight lines, airtightness, good drainage falls and durable finishes.
Your Choice of Extensions by SwiftFix London
Pick the path that suits your home. We plan the work, protect your property and hand back crisp finishes.
Home Extensions by SwiftFix London
A well‑planned kitchen extension can transform daily life. We coordinate every trade, protect your home and keep you updated with short, useful check‑ins. Expect clean routes, polite teams and finishes that last.
RSide Return Extensions by SwiftFix London
Claim the unused side alley to widen narrow ground floors, common in London terraces. We coordinate Party Wall matters, install steels and set levels so circulation flows from front door to garden.
Single or Double Storey Extensions by SwiftFix London
Choose single storey for family space, or add a second storey for bedrooms and bathrooms above. Structure, stairs and services are integrated so new and old read as one home.
Some extensions proceed under permitted development if they meet depth, height and eaves limits. Others need planning permission, especially wraparounds, double storey additions or builds in conservation areas. We confirm what applies early, prepare drawings and coordinate Building Control so structure, fire safety, insulation, drainage and electrics are properly signed off. Party Wall notices are handled where required.
Survey and scope agreed → fixed quote issued → programme set → respectful site setup → trades sequenced in the right order → regular updates → snag‑free handover with certificates. Your home is protected and kept workable if you’re living in throughout.
Budgets vary with footprint, storeys, structure and access. We keep costs predictable by fixing the scope up front, value‑engineering where sensible, sourcing durable materials and flagging options that improve value from layout efficiencies to energy‑saving upgrades.
What You Asked SwiftFix London
Approachable and accountable, with one lead contact throughout. Clear updates, steady progress and finishes that last.
Usually yes. We phase works to keep essentials usable, protect routes and clean down daily. Temporary provisions are agreed in advance, such as a basic sink or temporary cooking area.
Sometimes. Many rear or side return extensions fall under permitted development if they meet the rules. We confirm what applies before you spend on drawings.
Single storey rear projects often run 8–12 weeks depending on structure and finishes. Double storey or complex steel work can take longer. We provide a clear programme at quote stage.
We advise on the Party Wall etc. Act and can arrange surveyors where needed. Notices are served early to keep the programme on track.
You get a fixed, itemised quote. Any agreed changes are priced in writing before work proceeds.
Not sure what you need? Send us your question and we’ll get back fast.
Book a free home visit for a detailed quote and confirmed start date with our accredited London team.
SwiftFix coordinates accredited specialists, protects your property and keeps you in the loop with daily updates.
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