Ealing, London
Boroughs · West London
Ealing · Outer London

House extensions in Ealing

Big Edwardian villas suit rear dormers and full hip-to-gable conversions — Ealing offers some of London's best sqm-per-£ outside the prime tier.

Typical all-in (inc VAT)
£105k–£160k
Cost vs London base
+2%
Postcodes covered
W3 · W5 · W7 · W13

Housing stock in Ealing

Edwardian villas (Ealing Broadway), 1930s semis (Northolt, Greenford), Victorian terraces (Acton).

Hip-to-gableRear dormerMansard loft

Planning in Ealing

Ealing has a strong SPD for extensions. Conservation areas in Bedford Park, Pitshanger and Ealing Green require design that respects the Arts & Crafts idiom.

Party Wall Act — what to expect

Mixed — semis in the west, terraces in Acton mean two party walls.

Read the Party Wall etc. Act 1996 guide for full detail on notices, timelines and surveyor costs.

Typical costs in Ealing

For a mid-spec 25 m² rear dormer loft conversion, all-in (structural design, building control, party wall, VAT and 12% contingency), expect roughly £105,000 to £160,000. A mansard, a hip-to-gable with high-spec en-suite joinery or a conservation-area application will push above the top of this range; a self-built rooflight conversion comes in well under the bottom.

Cost tier
Outer London · +2% vs London average

Our calculator applies a 1.02× multiplier automatically for Ealing projects. Get an itemised breakdown in 60 seconds.

Get your Ealing estimate

Areas we cover in Ealing

W3W5W7W13UB1UB2UB6

Why homeowners in Ealing pick us

  • KYB-verified builders only
  • Local Ealing project experience
  • Fixed, itemised written quotes
  • Full insurance & warranty checks
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