Single-storey side extensions in Brent
Brent approved 317 of the 398 planning applications for single-storey side extensions it decided in the last five years (80%), and the typical decision took 64 days.
London Borough of Brent · planning applications received Oct 2021 to Oct 2026 · updated 25 Oct 2026
Approved
317 of 398
80% of decided applications; 5 withdrawn, 15 undecided
Typical time to a decision
64 days
median, from 397 decisions with both dates published
Decided within 8 weeks
140 of 397
8 weeks is the usual statutory period; councils can agree extensions
See what was approved near your own address
The The Signal Report shows approvals and refusals for single-storey side extensions within 250 m, 500 m and 1 km of your home, the council's reasons for refusing similar schemes, your property's planning history and the constraints on the plot. Free preview for any address.
Recent decisions
Proposed single storey side infill extension, replacement of front door, first floor and outrigge...
26/2119 · decided 16 Oct 2026
Proposed single storey side and rear extension, raised patio, single storey side infill extension...
26/2049 · decided 7 Oct 2026
Demolition of existing shed and side extension and proposed single-storey side extension to dwell...
26/1497 · decided 6 Oct 2026
Proposed single-storey side extension and roof height increase to the existing single-storey work...
26/1669 · decided 8 Sept 2026
Retention of two-storey side extension with associated front balcony; conversion of attached garage to habitable room; part single-storey s…
26/0944 · decided 28 Aug 2026
Why Brent refuses single-storey side extensions
The council's own words, quoted from recent decision notices.
35 Derwent Gardens, Wembley, HA9 8SG
“1 The development, by reason of the mismatch between the gable-ended roof of the main dwellinghouse and the hipped roof form of the first-floor side extension, results in a disjointed and poorly integrated roof design that fails to respect the architectural composition, character and appearance of the host dwelling. The conflicting roof forms create an incongruous and visually discordant appearance that detracts from the overall design quality of the building and causes harm to the character and appearance of the surrounding street scene. As such, the development is contrary to Policies DMP1…”
24 Sidmouth Road, London, NW2 5JX
“1 The proposed single-storey side-to-front extension, by reason of its excessive cumulative width in combination with the existing two-storey side extension, its forward projection beyond the established building line, and its overly complex and incongruous roof design, would result in a visually intrusive and overly dominant form of development that fails to respect the character and appearance of the host dwelling and the surrounding streetscene, particularly given its prominent corner location. The proposal is therefore contrary to Policies DMP1 and BD1 of the Brent Local Plan (2019–2041)…”
28 Queensbury Road, Wembley, HA0 1LU
“1 The proposed first floor side extension, due to its flat roof design towards the front of the dwelling, would fail to match the design of the main roof, resulting in a visually discordant and out of character addition that would harm the character and appearance of the host property and the surrounding area, contrary to Brent Local Plan Policy DMP1 and the Residential Extensions and Alterations SPD (2025). 2 The proposed development, two-storey side and first floor rear extensions, by reason of their scale, height and proximity to the ground floor rear bedroom at No.30 Queensbury Road, woul…”
Other home extensions in Brent
- Loft conversions
975 of 1,301 approved (75%)
- Single-storey rear extensions
970 of 1,283 approved (76%)
- Two-storey and first-floor extensions
582 of 899 approved (65%)
How these figures are made
Planning applications London Borough of Brent received Oct 2021 to Oct 2026, from the council's public planning register as collected by Planning Signal. An application counts as a single-storey side extension when its own description says so (rules-based classification, tested against blind labelled samples). Duplicate records of one application are counted once. The approval figure counts approved and refused planning applications only: withdrawn and undecided ones, lawful development certificates and prior approvals are left out. Decision times use the received (or validated) date and the decision date the council published.
Past decisions describe what happened to other applications. They are not a prediction for yours: every application is decided on its own design and the council's current policies.