Croydon, London
Boroughs · South London
Croydon · Outer London

House extensions in Croydon

Croydon's mix of semis and generous plots delivers strong extension ROI at outer-London build rates.

Typical all-in (inc VAT)
£90k–£145k
Cost vs London base
-2%
Postcodes covered
CR0 · CR2 · CR5 · CR7

Housing stock in Croydon

Edwardian bay-fronted terraces, 1930s semis, larger detached homes in Purley and Sanderstead.

Rear extensionWraparoundLoft dormer

Planning in Croydon

Croydon has been publishing supplementary planning documents that speed up householder decisions. PD is the default for most rear extensions.

Party Wall Act — what to expect

Semi-detached: usually one Party Wall Award.

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

Typical costs in Croydon

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.

Cost tier
Outer London · -2% vs London average

Our calculator applies a 0.98× multiplier automatically for Croydon projects. Get an itemised breakdown in 60 seconds.

Get your Croydon estimate

Areas we cover in Croydon

CR0CR2CR5CR7CR8

Why homeowners in Croydon pick us

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