36 Hollycroft Avenue London NW3 7QN Data via plota.co.uk

2026/3066/P - Householder Application Refused
Extensions & alterations

Proposal

Replacement of the existing first-floor rear conservatory with a rear extension; erection of second storey rear extension; extension of the existing roof terrace above; removal of the existing side dormer and installation of three conservation-style rooflights; alterations to the side elevation including the infilling of existing openings and formation of new openings; and relocation of the side entrance door. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
22 Jul 2026
✗
Refused
19 Oct 2026
Appeal
Not lodged

Refused on 19 Oct 2026 · Delegated · Last checked 20 Oct 2026

Documents

View the documents on the council's website ↗

Site constraints 6

Redington Frognal conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
2 Article 4 directions
Redington/Frognal Conservation Area Non-immediate Article 4 · Basements. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Air quality management area: Camden AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
9 listed buildings within 150 m of the postcode pin
Nearest: 26 and 26a, Ferncroft Avenue, Grade II, about 57 m from the postcode pin · 9 Grade II
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show all 9 with distances
Historic England ↗
Also on the record
Inside the Camden built-up area; Public transport access: PTAL 0 (very poor), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

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Other new applications on this street

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Savoy Court Firecrest Drive London NW3 7NF

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Important details

Council
Camden
Application type
Householder Application
Postcode
NW3 7QN
Received
22 Jul 2026
Validated
22 Jul 2026
Ward
Frognal
Case officer
Show
Decision
Refused
Decision date
19 Oct 2026
Decision level
Delegated
Applicant
Show
Agent
SM Planning

How this decision compares

Decided in 89 days from validation, 31 days slower than Camden's median of 58 for extensions. Refused, as 6% of extensions here are.

48%decided within 8 weeks
94%approved
10%go to committee

Plota live figures for extensions decided by Camden in the last twelve months, from validation. Camden decision record →

Consultation & key dates

Comments by
27 Sept 2026

Historical activity at this location

26 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2021 Approved
Installation of 2 conservation rooflights to front gable roofslopes, re-cladding of exist…
2021/5316/P
Within ~100m

Nearby activity

2024 Approved
Flat 1st And 2nd Floor 35 Hollycroft Avenue London NW3 7QJ
Removal of existing conservatory and replacement with roof terrace with associated altera…
2024/5461/P
2024 Approved
Flat B 36 Hollycroft Avenue London NW3 7QN
Alterations to the side elevation, including, replacement porch, fence and gate with reco…
2024/1938/P
2024 Approved
34 Hollycroft Avenue London NW3 7QL
FRONT GARDEN: 2 x Ornamental Apples (T3) - Fell to ground level.
2024/4884/T
2024 Approved
32 Hollycroft Avenue London NW3 7QL
REAR GARDEN: 1 x Camelia (T1) - Reduce back from just beyond the boundary line with no 32…
2024/4885/T
2024 Refused
46 Hollycroft Avenue London Camden NW3 7QN
Installation of a ramped access and remodelling of the existing external stair; replaceme…
2024/4025/P
2024 Approved
Flat 1 14 Ferncroft Avenue London NW3 7PH
REAR GARDEN: 1 x Apple (T1) - Fell to ground level. 1 x Cherry (T2) - 3m reduction by 15%…
2024/2479/T
2024 Refused
46 Hollycroft Avenue London NW3 7QN
Introduction of a ramped access and remodelling of the existing external stair; replaceme…
2024/1727/P
2024 Approved
12 Ferncroft Avenue London NW3 7PH
Replacement of existing single-glazed windows and doors to front, rear, and side elevatio…
2024/1604/L
2024 Approved
12 Ferncroft Avenue London NW3 7PH
Replacement of existing single-glazed windows and doors to front, rear, and side elevatio…
2024/1180/P
2024 Approved
40 Hollycroft Avenue London NW3 7QN
Installation of four new meter boxes and associated pipework to flats (retrospective).
2024/0401/P
2023 Approved
1 Rosecroft Avenue London NW3 7QA
Removal of 2no windows in the North Elevation elevation and 1no. new window in the East E…
2023/5065/P
2023 Refused
26A Ferncroft Avenue London NW3 7PH
Erection of a two storey rear extension with lower and upper terraces, new garden store a…
2023/3881/L
2023 Refused
26A Ferncroft Avenue London NW3 7PH
Erection of a two storey rear extension with lower and upper terraces, new garden store a…
2023/3083/P
2023 Approved
46 Hollycroft Avenue London NW3 7QN
Replacement of rear glazed doors with new steel framed doors at ground and lower ground l…
2023/4501/P
2023 Approved
Flat 3 3 Rosecroft Avenue London NW3 7QA
DD 5 Day Notice REAR GARDEN: 1 x Conifer (T1) - Fell to ground level.
2023/4621/T
2022 Approved
34 Hollycroft Avenue London NW3 7QL
Proposed single storey basement level beneath the footprint of the existing house and the…
2022/3800/P
2023 Approved
45 Hollycroft Avenue London NW3 7QJ
REAR GARDEN: 1 x Robinias (T1, T2, T3 & T4) - Reduce height by approx. 4m (to height of r…
2023/4874/T
2023 Approved
41 Hollycroft Avenue London NW3 7QJ
REAR GARDEN: 1 x Lime (T1) - Prune back low overhanging branches by 2m with poles from gr…
2023/3920/T
2023 Approved
39 Hollycroft Avenue London NW3 7QJ
REAR GARDEN: 4 x Silver Birches (G1) - Reduce height by 2m and shape as required. 1 x dea…
2023/3917/T
2022 Approved
45 Hollycroft Avenue London Camden NW3 7QJ
Installation of 3 x rooflights to rear roof slope, and internal alterations.
2022/4382/L
2016 Approved
29 Hollycroft Avenue London NW3 7QJ
REAR GARDEN: 1 x Cypress (T1) - Fell to ground level 1 x Amalanchier (T2) - Reduce by 1m…
2016/3306/T
2016 Approved
1 Rosecroft Avenue London NW3 7QA
FRONT/SIDE GARDEN: 1 x Conifer - Fell.
2016/3164/T
2016 Approved
14 Ferncroft Avenue Camden London NW3 7PH
Internal refurbishment including, damp-proofing and reconfiguration of partitions.
2016/0809/L
2016 Withdrawn
Flat 2 14 Ferncroft Avenue London NW3 7PH
Alterations of layout to first floor flat and new services (retrospective)
2016/2675/P
2016 Approved
19 Hollycroft Avenue London NW3 7QH
REAR GARDEN: 1 x Alder (T1) - reduce small branches up to 25mm in diameter back from gard…
2016/0382/T
Camden
Planning Authority Score
3.1/10
Poor
#231 of 296 councils
Relevant to this application:
Householder decisions

Camden is slower than most councils at deciding householder applications, ranking #242 out of 296. Householder applications are slightly less likely to be approved here (88%) than the national average (90%).

Slower than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Camden decision statistics
Based on MHCLG data, the year to March 2026
88%
Overall approval rate
Above avg (87%) #149 of 296
88%
Householder approved
Below avg (90%) #215 of 296
49%
Decided in 8 weeks
Below avg (63%) #242 of 296
41%
Extended time limit
Below avg (41%) #158 of 296
90%
Minor dwellings approved
467 decided (1-9 homes)
80%
Major dwellings approved
10 decided (10+ homes)
93%
Change of use approved
46 decided
1,973
Total decisions
234 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings