Housing stock in Harrow
1930s Metroland semis and detached, larger Arts & Crafts in Pinner.
Planning in Harrow
Pinner and Harrow-on-the-Hill conservation areas add design review. Elsewhere Harrow is a very PD-friendly borough.
Party Wall Act — what to expect
Semi-detached: one party wall neighbour typical.
Read the Party Wall etc. Act 1996 guide for full detail on notices, timelines and surveyor costs.
Typical costs in Harrow
For a mid-spec 25 m² kitchen extension, all-in (professional fees, planning, party wall, VAT and 12% contingency), expect roughly £90,000 to £145,000. 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.
Our calculator applies a 0.97× multiplier automatically for Harrow projects. Get an itemised breakdown in 60 seconds.
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