Hammersmith & Fulham, London
Boroughs · West London
Hammersmith & Fulham · Inner London

House extensions in Hammersmith & Fulham

Fulham's Victorian terraces are rear dormer classics; the borough's roofscape policy makes mansard schemes more selective than they used to be.

Typical all-in (inc VAT)
£130k–£195k
Cost vs London base
+10%
Postcodes covered
W6 · W12 · W14 · SW6

Housing stock in Hammersmith & Fulham

Victorian terraces (Fulham, Brook Green), Edwardian mansion blocks, Georgian in Hammersmith.

Rear dormerL-shaped dormerHip-to-gable conversion

Planning in Hammersmith & Fulham

H&F has a tightened policy on large mansard and hip-to-gable schemes since 2018 — feasibility needs early consultation. Conservation areas (Brackenbury, Hurlingham) are extensive.

Party Wall Act — what to expect

Terraces + structural loft work = complex, often three-party party wall proceedings.

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

Typical costs in Hammersmith & Fulham

For a mid-spec 25 m² rear dormer loft conversion, all-in (structural design, building control, party wall, VAT and 12% contingency), expect roughly £130,000 to £195,000. 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
Inner London · +10% vs London average

Our calculator applies a 1.10× multiplier automatically for Hammersmith & Fulham projects. Get an itemised breakdown in 60 seconds.

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Areas we cover in Hammersmith & Fulham

W6W12W14SW6

Why homeowners in Hammersmith & Fulham pick us

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