Flat A 26 Eton Avenue London NW3 3HL Data via plota.co.uk

2026/2477/P - Full Planning Permission REGISTERED
Extensions & alterationsSolar & renewables

Proposal

Installation of 1 x ASHP with associated acoustic enclosure and a replacement shed in rear garden, roof insulation to existing single storey rear extension, and replacement of front windows. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
around 20 Jul 2026
Decision
Expected by 14 Sept 2026

Under consideration

No decision has been issued yet. Plota predicted a decision around 9 Oct 2026; it is now day 81.

The consultation period closed on 23 Aug 2026.

Documents

View the documents on the council's website ↗

Site constraints 7

11 listed buildings within 150 m of the postcode pin
Nearest: Number 34 and Attached Front Garden Boundary Wall and Gate Piers, Grade II, the postcode pin is inside its outline · 1 Grade II*, 10 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 11 with distances
Historic England ↗
Belsize 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
Belsize 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 Named permitted development rights are withdrawn here.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 ↗
Also on the record
Local nature reserve about 491 m away: Adelaide; Inside the Camden built-up area; Public transport access: PTAL 4 (good), 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.

Building

Floor area326 m² (3,509 sq ft)
Energy ratingD (58 out of 100), could reach C
PropertyDetached flat, 7 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in September 2024, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Other new applications on this street

6 Oct 2026Pending

Garden Flat 36 Eton Avenue London NW3 3HL

Alterations to existing lower ground floor rear fenestration and enlargement of ...

2026/4253/P
22 Sept 2026Pending

The Royal Central School Of Speech And Drama Embassy Theatre, 62-64 Eton Avenue London Camden NW3 3HY

Proposed illuminated signage to new PTEQ Building at Royal Central School of Spe...

2026/3949/A
3 Sept 2026Pending

Flat 1, 73 Eton Avenue London NW3 3EU

Replacement of existing defective rear lean-to conservatory with a new slimline ...

2026/2697/P

Nearby new applications

6 Oct 2026Pending

Basement Flat & Flat Raised Ground Floor 46 Primrose Hill Road London NW3 3AA

Amalgamation of two self-contained flats to form a self-contained maisonette on ...

2026/4314/P
6 Oct 2026Pending

Garden Flat 36 Eton Avenue London NW3 3HL

Alterations to existing lower ground floor rear fenestration and enlargement of ...

2026/4253/P
6 Oct 2026Pending

Garden Flat 36 Eton Avenue London NW3 3HL

Alterations to existing lower ground floor rear fenestration and enlargement of ...

2026/4353/L
5 Oct 2026Pending

Belsize Park House 59 - 60 Belsize Park London NW3 4EJ

DD 5 Day Notice REAR GARDEN: 1 x Unknown (T1) - Fell to ground level.

2026/4325/T
30 Sept 2026Pending

6 Conybeare London NW3 3SD

Retention of rooftop enclosure.

2026/4222/P
30 Sept 2026Pending

6 Conybeare London NW3 3SD

Variation of Condition 2 (approved plans) of planning permission ref. 2022/2870/...

2026/4223/P

Important details

Council
Camden
Application type
Full Planning Permission
Postcode
NW3 3HL
Received
around 20 Jul 2026
Validated
20 Jul 2026
Ward
Belsize
Case officer
Show
Applicant
Show
Agent
Charlton Brown Architects

Decision outlook

Day 81, past the statutory target. 70% of extensions in Camden are decided within thirteen weeks, which runs to 19 Oct 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 1 Oct 2026.

Day 8125 days past the 56-day target
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
23 Aug 2026

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2024 Approved
Flat 1 39 Eton Avenue London NW3 3EP
Alteration to fenestrations including widening of the door and replacement of the brick l…
2024/4868/L
2024 Approved
Flat 1 39 Eton Avenue London NW3 3EP
Alteration to fenestrations including widening of the door and replacement of the brick l…
2024/4720/P
2024 Approved
39 Eton Avenue London NW3 3EP
(TPO REF: C1274 2021) REAR GARDEN: 1 x Horse Chestnut (T1) - Crown reduce by 4m.
2024/4222/T
2024 Approved
39 Eton Avenue London NW3 3EP
REAR GARDEN: 1 x Eucalyptus (T2) - Re-pollard to previous points removing 3m of growth. 1…
2024/4256/T
2024 Approved
Flat 1 39 Eton Avenue London NW3 3EP
Details pursuant to Condition 4 (brickwork) of Listed Building Consent ref: 2023/1191/L d…
2024/1524/L
2024 Refused
37 Eton Avenue London NW3 3EP
REAR GARDEN: 1 x Tree of Heaven (T1) - Fell as close to ground level as possible.
2024/1921/T
2024 Approved
16 Lancaster Grove London NW3 4PB
REAR GARDEN: 1 x Cherry (T1) - Remove the left-hand stem (secondary) to a point approx. 0…
2024/1617/T
2024 Withdrawn
Flat 1 39 Eton Avenue London NW3 3EP
Variation of condition 4 (brickwork) of listed building consent 2023/1191/L dated 3 Octob…
2024/0018/L
2023 Approved
Flat 1 37 Eton Avenue London NW3 3EP
REAR GARDEN: 1 x Poplar (T1) - Pollard to previous points, 2m - 2.5m. 1 x Poplar (T2) - P…
2023/4777/T
2023 Approved
30 Eton Avenue London NW3 3HL
REAR GARDEN: 1 x Ash (T1) - Fell and treat stump with eco plugs. 1 x Hawthorn (T13) - Fel…
2023/3527/T
2023 Refused
22 Lancaster Grove London NW3 4PB
REAR GARDEN: 1 x London Plane (T5) - Fell and treat stump with eco plugs.
2023/3530/T
2023 Approved
Flat 1 39 Eton Avenue London NW3 3EP
Erection of side alley canopy over the existing lower ground floor side entrance (eastern…
2023/0495/P
2023 Approved
Flat 1 39 Eton Avenue London NW3 3EP
Erection of a side alley canopy over the existing lower ground floor side entrance (easte…
2023/1191/L
2023 Approved
37 Eton Avenue London NW3 3EP
DD 5 Day Notice REAR GARDEN; 1 x Poplar (T1) - Fell to ground level
2023/4016/T
2022 Approved
36 Garden Flat Eton Avenue London NW3 3HL
Replacement of an existing lower ground floor rear extension structure and enlargement of…
2022/4255/P
2022 Approved
36 Garden Flat Eton Avenue London NW3 3HL
Replacement of an existing lower ground floor rear extension structure with associated in…
2022/5147/L
2022 Approved
47 Eton Avenue London NW3 3EP
REAR GARDEN:1 x Sycamore (T1) - Crown reduce by laterally and 4m height. 1 x Robinia (T2)…
2022/5149/T
2022 Approved
18 Lancaster Grove London NW3 4PB
FRONT GARDEN: 1 x Scots Pine (T1) - Reduce crown on building side to give 1.5m clearance.
2022/4989/T
2022 Approved
Flat 1 42 Eton Avenue London NW3 3HL
REAR GARDEN: 1 x London Plane (T1) - Re-pollard.
2022/4778/T
2022 Approved
35 Eton Avenue London NW3 3EP
FRONT GARDEN: 1 x Maple - Reduce height by 30%, 2m and pollard branches overhanging publi…
2022/4082/T
2016 Approved
Garden Flat A 9 Strathray Gardens London NW3 4PA
Erection of single storey outbuilding to rear garden to be used as ancillary accommodatio…
2016/4181/P
2016 Approved
The Cottage 28 Eton Avenue London NW3 3HL
Erection of single storey extension to the rear of the existing dwelling house (Class C3).
2016/4784/P
2016 Approved
The Cottage 28 Eton Avenue London NW3 3HL
Replacement of ground floor windows and glazed doors to the rear of the existing flat (Cl…
2016/4780/P
2016 Approved
Flat 5 30 Eton Avenue London NW3 3HL
Alterations to internal layout, including alterations and erection of internal partition…
2016/2774/L
2016 Withdrawn
Flats 1 and 2 7 Strathray Gardens London NW3 4PA
Erection of an Umbris Louvre Gazebo to the rear garden of dwelling house (Class C3).
2016/3020/P
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

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.