9 St Paul's Mews London NW1 9TZ Data via plota.co.uk

2026/3481/P - Certificate of Lawfulness (Proposed) REGISTERED
Extensions & alterations

Proposal

Repair and refurbish the five existing front-of-house sash windows, replacing the single glazing with double glazing. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
7 Sept 2026
Decision
Expected by 2 Nov 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision between 27 Oct 2026 and 10 Nov 2026, from Camden's recent extensions.

Documents

View the documents on the council's website ↗

Site constraints 5

Camden Square 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 ↗
Article 4 direction
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 Named permitted development rights are withdrawn here.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 ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Inside the Camden built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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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Important details

Council
Camden
Application type
Certificate of Lawfulness (Proposed)
Postcode
NW1 9TZ
Received
7 Sept 2026
Validated
7 Sept 2026
Ward
Camden Square
Case officer
Show
Applicant
Show

Decision outlook

Day 5 of the 56-day target. Camden usually decides extensions by day 56.

Day 551 days to the 56-day target
52%decided within 8 weeks
98%approved
7%go to committee

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

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
Replacement of existing up and over garage doors to side hinged double doors on front ele…
2021/3161/P
Within ~100m

Nearby activity

2024 Withdrawn
93 Agar Grove London Camden NW1 9UE
Change of use of the basement floor from office (Class E) to a one bedroom flat (Class C3…
2024/4311/P
2024 Approved
Flat 1 Lower Ground And Ground Floor 59 Agar Grove London NW1 9UE
Replacement of existing front and side garden wall with proposed new garden wall, new pie…
2024/5603/P
2024 Approved
132 Agar Grove London NW1 9TY
REAR GARDEN: 2 x Limes (T1 & T2) - Reduce by 2.5m back to previous points.
2024/3967/T
2024 Approved
65 Agar Grove London NW1 9UE
Alterations to rear elevation windows and doors including replacement of UPVC units with…
2024/1551/P
2023 Approved
140 Agar Grove London NW1 9TY
REAR GARDEN: 1 x Lime (AGR.N1) - Reduce canopy to previous reduction points, (approx. 1m…
2023/5284/T
2022 Refused
1st and 2nd Floor Flat 158 Agar Grove London NW1 9TY
Erection of single storey rear extension at 1st floor level (above existing rear outrigge…
2022/4912/P
2023 Approved
71 Agar Grove London Camden NW1 9UE
Construction of an rear outbuillding.
2023/4611/P
2023 Approved
4 St Paul's Mews London NW1 9TZ
Replacement of rear facade steel doors/windows with aluminium doors/windows.
2023/2750/P
2023 Approved
75 Agar Grove London NW1 9UE
FRONT GARDEN: 1 x Magnolia (T1) - Reduce crown to previous pruning points, approx. 3m red…
2023/2910/T
2023 Approved
136 Agar Grove London NW1 9TY
FRONT GARDEN: 1 x Lime (T1) - Remove new growth back to previous points of reduction.
2023/2680/T
2023 Approved
16 St Paul's Mews London NW1 9TZ
REAR GARDEN: 1 x Goat Willow (T1) - Crown reduce back to previous by approx. 3m height re…
2023/1684/T
2023 Approved
10 St Paul's Mews London NW1 9TZ
REAR GARDEN: 3 x Ash (G1) - Reduce height and width by up to 2m. Retain natural and even…
2023/0056/T
2022 Approved
126 Agar Grove London NW1 9TY
Erection of timber outbuilding in rear garden
2022/4473/P
2022 Approved
3 St. Paul's Mews London NW1 9TZ
REAR GARDEN: 1 x Ash (T1) - Reduce height by approx. 3m and sides by approx. 2m.
2022/4968/T
2021 Approved
93 Agar Grove London NW1 9UE
Change of use of a part of the ground floor from minicab command center (Class E) to a on…
2021/0396/P
2022
Lower Ground Floor Flat 152 A Agar Grove London NW1 9TY
Erection of two sheds (each 1.86m x 1.28m footprint) at the end of the back garden.
2022/2838/P
2022 Approved
75 Agar Grove London NW1 9UE
FRONT GARDEN: 1 x Magnolia (T1) - Reduce crown to previous pruning points, approx. 2m red…
2022/0893/T
2022 Withdrawn
126 Flat A Agar Grove London Camden NW1 9TY
Installation of gas meter to side elevation at lower ground floor level.
2022/0824/INVALID
2020 Refused
Land at rear of 65 Agar Grove London NW1 9UE
Erection of singe storey new dwelling in the back garden.
2020/5899/P
2021 Approved
Flat A 126 Agar Grove London NW1 9TY
Ground floor rear extension
2021/3924/P
2017 Approved
136 Agar Grove London NW1 9TY
(TPO REF C10) FRONT GARDEN: 1 x Lime - Reduce to previous points and thin by 15%
2017/0552/T
2016 Approved
22 St Paul's Mews London NW1 9TZ
Erection of dormer to the rear of the existing dwelling house and two conservation style…
2016/6773/P
2016 Withdrawn
93 Agar Grove London NW1 9UE
Conversion of part of the ground floor from minicab office (Class B1) to 1-bed residentia…
2016/6951/P
2016 Approved
132 Agar Grove London NW1 9TY
REAR GARDEN: 2 x Limes - crown reduce by 30%
2016/5807/T
2016 Approved
3 St Paul's Mews London NW1 9TZ
Creation of dormer to the rear of the existing dwelling house and the installation of two…
2016/4210/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