This is not Haringey's planning register. To look up or comment on a live application, use the council's own site: search Haringey's register.
95% of the 39 rear extensions Haringey decided between September 2026 and November 2026 were approved. Plan Forecast, 4 November 2026.
Recent decisions
Real decisions, newest first. Addresses are reduced to the street here; the council publishes them in full on its own register.
Onslow Gardens Hornsey London
ApprovedErection of a wrap around ground floor rear extension and extension of first floor rear outrigger; erection of two front roof lights.
Decided 2 November 2026 HGY/2026/1669
Wolseley Road Hornsey London
RefusedErection of rear extension at first floor level. Installation of French doors to rear ground floor elevation, raised decking area allowing access back into the new rear extension
Decided 2 November 2026 HGY/2026/2229
Cromwell Avenue Hornsey London
ApprovedDemolition and replacement of the existing rear lean-to shed with an enlarged single storey extension (orangery).
Decided 2 November 2026 HGY/2026/2519
Before you apply
- Do I need planning permission for a rear extension?
- Do I need Building Regulations approval for a rear 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 Haringey
Questions people ask
What percentage of rear extensions does Haringey approve?
95% were approved, over 39 decisions that went one way or the other. Haringey's figure across all types of work is drawn from 314 decisions.
How many rear extensions has Haringey decided?
39 that went one way or the other, from September 2026 to November 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.