Housing stock in Croydon
Edwardian bay-fronted terraces, 1930s semis, larger detached homes in Purley and Sanderstead.
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 rear dormer loft conversion, all-in (structural design, building control, party wall, VAT and 12% contingency), expect roughly £90,000 to £145,000. 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.
Our calculator applies a 0.98× multiplier automatically for Croydon projects. Get an itemised breakdown in 60 seconds.
Get your Croydon estimateAreas we cover in Croydon
Why homeowners in Croydon pick us
- KYB-verified builders only
- Local Croydon project experience
- Fixed, itemised written quotes
- Full insurance & warranty checks