Add space without moving, with designs that feel natural to your home. We plan permissions, structure and services for open plan living, lofts and garages. Phasing keeps key rooms usable while we build. You get weekly updates and a neat finish ready to enjoy
Measured Site
Survey
Accurate measurements, and services mapped for a clean build.
Structural Openings Managed
Steels, lintels and temporary works handled and recorded.
Live-In Friendly Phasing
Protected routes, dust control and clear communication throughout.
Create open plan living with brighter space linked to your garden.
Maximise footprint on two sides to unlock flexible zones.
Add bedrooms and bathrooms above new living space for balanced layouts.
07798 622 171
Simple guidance on permissions, agreements and budgets before you build.
If your design exceeds PD or you are in a conservation area, planning may be required. We advise early, coordinate submissions and respond to comments so decisions are straightforward.
Work near shared boundaries can trigger the Party Wall process. We help you understand notices, timings and surveyor roles so neighbours stay informed and the build can proceed smoothly.
Building near or over a public sewer usually needs approval. We arrange CCTV checks and drawings, then liaise with Thames Water so your agreement is in place before groundworks start.
Budgets vary with scope, specification and access. We give a transparent cost guide, then fix the scope so you know where you stand before we begin.
Many rear extensions and lofts qualify under PD if they meet size and height limits. We check your address and drawings, then advise if a planning application is the better route.
Timings depend on size, access and specification, but we lock in a clear plan up front. You receive weekly updates and tidy housekeeping so day to day life stays manageable.
Yes, structural work, insulation, fire safety and electrics are inspected. We schedule visits, record outcomes and provide certificates at handover for your records.
Often, yes. We phase the work, protect routes and manage dust so kitchens, bathrooms and bedrooms remain accessible where possible, and we agree short closures in advance.
Harpers Home Extensions
Based in Staines-upon-Thames | Serving Surrey & Middlesex
Choose house extension specialists who keep sites clean and coordinate trades in one team.
Click for a fast Home Extensions quote and a free site visit. We lock in scope, and perfect delivery so your project runs smoothly.
Harpers | Free Guide For Homeowners
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