We design, plan and build house extensions across Ealing and the wider Ealing borough — one team, one fixed price, one project manager from sketch to handover.
Typical scope +18 to +60m²
Cost guide From £2,500 / m²
Build time 12–22 weeks
Consult Free 1–2 hour visit
BUILDING IN EALING
Ealing — the 'Queen of the Suburbs' — is a mix of generous Victorian and Edwardian semis, detached houses and tree-lined avenues, with larger plots than inner London. That space opens up bigger extensions and the occasional new-build.
Ealing's wider plots suit double-storey side and rear extensions, not just side-returns — adding substantial family space and extra bedrooms in one scheme.
Local advantage
Why Ealing homeowners choose DPS for house extensions.
01 · PLANNING HANDLED
We handle the permission side in-house.
Planning drawings, building-regulations and party-wall paperwork are prepared and submitted by our own team —
including for conservation-area or listed properties where extra consent is needed. One point of contact owns
both the approvals and the build, so nothing falls between an architect and a separate contractor.
02 · ONE TEAM
Architects, builders, project managers — all in-house.
No subcontractor juggling. From the first sketch through structural engineering to final snagging, your project moves
through people who all sit in the same office and answer to the same project manager.
03 · TRANSPARENT PRICING
From £2,500 / m² — itemised and fixed.
You pay in stages, only after each stage is signed off. Variations only happen when scope genuinely changes — and
they go through written authorisation, never a verbal "while we are at it".
Yes — Ealing (W5) is well within our Ealing working area. We typically deliver several house extensions projects across this borough each year.
How long does a house extensions project take in Ealing?
End-to-end (consultation → handover) usually 12–22 weeks. Build phase alone is shorter — most house extensions sites complete in 8–18 weeks depending on scope and finishes.
What does house extensions cost in Ealing?
Typical range: From £2,500 / m². Our online calculator gives you a tighter figure based on your house type and ambitions; the fixed quote follows a free site visit.
Will I need planning permission in Ealing?
It depends on the property. Many house extensions fall under permitted development, especially in Ealing. Where planning is needed (conservation areas, listed properties, larger schemes), we handle the application end-to-end.
Do I need planning permission for a house extension?
Many extensions fall under permitted development. We assess your property and tell you exactly what you need on the first visit.
How long does a typical extension take?
A single-storey extension takes 12–16 weeks from breaking ground to completion. Double-storey runs 16–22 weeks.
Can we live in the house during the build?
For most rear extensions, yes. We dust-seal the working area and maintain access to your kitchen and bathroom.