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Home Extensions

Extensions

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SwiftFix London Extensions

Home Extensions in London

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.

Confirmed scope & start date

Scope confirmed after survey with schedule covering groundworks and structure.

Respectful access management

Access protected, noisy tasks scheduled considerately throughout always.

Engineered structure delivered

Engineered steels installed safely, services rerouted and pressure-tested perfectly.

Matched finishes throughout

Brickwork, insulation and air-tightness checked; finishes matched to house style.

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Your Choice of Home Extensions by SwiftFix London

house extension London

Pick the path that suits your home. We plan the work, protect your property and hand back crisp finishes.

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Single Storey Home Extensions by SwiftFix London

Single Storey Home Extensions

Add a bright kitchen-living space on the ground floor with clean access to the garden. We handle groundworks, structure, services and finishes so the new room feels warm, practical and part of your home.

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Double Storey Home Extensions by SwiftFix London

Double Storey Extensions

Extend at ground level and add bedrooms or a bathroom above. Structure, stairs and services are integrated so new and existing spaces flow together neatly.

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RSide Return Extensions by SwiftFix London

Side Return Extensions

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.

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Home Extensions by SwiftFix London

Making Your Space Work Better

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.

One Call Away From Extending Your Home

Planning Permission for Home Extensions

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.

The Process of Extending Your Home

We visit to review options, structure and access, then confirm the scope in writing. You receive a free quote and timeline. Groundworks, steelwork and shell are sequenced in the right order, with protection to the existing home and neighbour liaison where needed. We complete sign-offs with Building Control and hand back tidy, ready for use.

Costs of Home Extensions

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.

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What You Asked SwiftFix London

A Team You Can Rely On

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.

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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.

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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.

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We advise on the Party Wall etc. Act and can arrange surveyors where needed. Notices are served early to keep the programme on track.

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You get a fixed, free quote. Any agreed changes are priced in writing before work proceeds.

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Need Advice? Contact Us!

Not sure what you need? Send us your question and we’ll get back fast.

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Ready to start your Home Extension?

Book a free home visit for a detailed quote and confirmed start date with our accredited London team.

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