This is not Lambeth's planning register. To look up or comment on a live application, use the council's own site: search Lambeth's register.
94% of the 34 applications decided in Streatham Hill West & Thornton, Lambeth, between March 2026 and November 2026, were approved; half were decided within 56 days; across Lambeth, 62% of the refusals read were refused at least in part over design or the character of the area. Plan Forecast, 5 November 2026.
Time to decide: half were decided within 56 days, counted from the day the application was valid (or received, where the register gives no valid date) over the 34 decisions with both dates.
Across Lambeth: what refusals were about
Of the 91 refusals whose decision notices we read, the share that gave a reason about each.
- Design and character of the area 62% That the work suits the house and the street: its size, its shape, its roof and its materials.
- Neighbours' amenity 32% That the neighbours keep reasonable light, outlook and privacy: no wall that looms over them, and no window that overlooks their home or garden more than the council judges acceptable.
- Heritage assets 19% That the work does no harm to the character or appearance of a conservation area, or to a listed building, its setting or what makes it special. The council gives that great weight, and any harm needs clear justification.
Lambeth as a whole granted a comparable share across 1,237 decisions. See the whole council.
What people apply for here
| Type of work | Decisions | Approved |
|---|---|---|
| Loft conversion or dormer | 16 | 88% a small sample |
| Rear extension | 5 | too few to say |
| Side extension | 4 | too few to say |
| Garden room or outbuilding | 2 | too few to say |
| Two-storey extension | 1 | too few to say |
Recent decisions
Real decisions, newest first. Addresses are reduced to the street here; the council publishes them in full on its own register.
Hydethorpe Road London
ApprovedErection of a hip-to-gable roof extension with a rear mansard roof extension, construction of a single-storey extension above the rear outrigger and installation of a window to its rear elevation, and installation of two new rooflights to the front roof slope.
Decided 2 November 2026 26/02503/FUL
London
ApprovedDisplay of 1x V-shaped externally illuminated totem sign, 2x wall-mounted signs, 2x wayfinding signs and individual unit numbers to each unit.
Decided 2 November 2026 26/02688/ADV
Midmoor Road London
ApprovedConstruction of rear mansard roof extension with the addition of 2 rooflights to the front (first floor flat).
Decided 14 October 2026 26/02440/FUL
Other work in Lambeth
- Rear extension 178
- Loft conversion or dormer 177
- Garden room or outbuilding 47
- Two-storey extension 38
- Side extension 34
Questions people ask
What percentage of planning applications in Streatham Hill West & Thornton are approved?
94% were approved, over 34 decisions that went one way or the other. Lambeth's figure across all types of work is drawn from 1,237 decisions.
How many planning decisions does Plan Forecast hold for Streatham Hill West & Thornton?
34 decided applications whose postcode falls in Streatham Hill West & Thornton, from March 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.