Richmond upon Thames, London
Boroughs · South London
Richmond upon Thames · Prime central

House extensions in Richmond upon Thames

Beautiful stock, exacting planning. Richmond rewards heritage-savvy design and top-tier detailing — buyers here notice everything.

Typical all-in (inc VAT)
£125k–£185k
Cost vs London base
+12%
Postcodes covered
TW1 · TW2 · TW9 · TW10

Housing stock in Richmond upon Thames

Georgian and Victorian villas (Richmond, Kew), Edwardian and 1930s semis (Twickenham, Teddington).

Rear extensionWraparoundLoft dormerGarden studio

Planning in Richmond upon Thames

Richmond has some of the strictest suburban planning in London. Multiple conservation areas, Article 4 in parts of Kew and Richmond Green, and views policies from Richmond Park.

Party Wall Act — what to expect

Terraces and semis; Kew/Richmond Green terraces trigger two party walls.

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

Typical costs in Richmond upon Thames

For a mid-spec 25 m² kitchen extension, all-in (professional fees, planning, party wall, VAT and 12% contingency), expect roughly £125,000 to £185,000. High-spec finishes, structural glazing or a full basement dig-out will push above the top of this range; a smaller side-return can come in under the bottom.

Cost tier
Prime central · +12% vs London average

Our calculator applies a 1.12× multiplier automatically for Richmond upon Thames projects. Get an itemised breakdown in 60 seconds.

Get your Richmond upon Thames estimate

Areas we cover in Richmond upon Thames

TW1TW2TW9TW10TW11TW12

Why homeowners in Richmond upon Thames pick us

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