This is not Croydon's planning register. To look up or comment on a live application, use the council's own site: search Croydon's register.
93% of the 30 side extensions Croydon decided between March 2026 and October 2026 were approved; half were decided within 54 days. Plan Forecast, 3 November 2026.
Time to decide: half were decided within 54 days, counted from the day the application was valid (or received, where the register gives no valid date) over the 30 decisions with both dates.
Recent decisions
Real decisions, newest first. Addresses are reduced to the street here; the council publishes them in full on its own register.
Woodland Way Purley
ApprovedErection of single storey side extension. Alterations.
Decided 26 October 2026 26/00910/HSE
Kemble Road
ApprovedErection of ground-floor rear and side extension
Decided 22 October 2026 26/02302/HSE
Tower View
RefusedDemolition of existing side extension to original property, erection of 2 No. semi-detached dwellings next to existing retained house, landscaping works for driveways and gardens to facilitate new dwellings.
Decided 15 October 2026 26/02106/FUL
By ward in Croydon
Approval rates differ across a council. These are every ward we hold enough decisions for.
- Purley & Woodcote 76%
- Fairfield 84%
- Coulsdon Town 76%
- South Croydon 60%
- Crystal Palace & Upper Norwood 80%
- Sanderstead 88%
- West Thornton 64%
- Norbury Park 69%
- Broad Green 75%
- Selsdon & Addington Village 85%
- Bensham Manor 65%
- Waddon 88%
- Norbury & Pollards Hill 69%
- South Norwood 75%
- Shirley North 84%
- Kenley 78%
- Old Coulsdon 98%
- Addiscombe East 74%
- Woodside 76%
- Purley Oaks & Riddlesdown 81%
- Thornton Heath 71%
- Addiscombe West 78%
- Selhurst 72%
Before you apply
- Do I need planning permission for a side extension?
- Do I need Building Regulations approval for a side extension?
Free check
Check your extension
Put a pin on your house, describe the work, and see it measured against each permitted development limit, with the clause it comes from. A guide, not a guarantee.
Other work in Croydon
- Rear extension 330
- Two-storey extension 232
- Loft conversion or dormer 101
- Garden room or outbuilding 45
- Side extension 30
Questions people ask
What percentage of side extensions does Croydon approve?
93% were approved, over 30 decisions that went one way or the other. Croydon's figure across all types of work is drawn from 1,334 decisions.
How many side extensions has Croydon decided?
30 that went one way or the other, from March 2026 to October 2026.
Get the forecast for your address
The figures above are the council. A forecast is your postcode: the same rate, the time a decision takes, and what happened on nearby streets. Free, and we email it to you.