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Flat 20, Thirlmere Cumberland Market London NW1 4EN

2025/0281/PCertificate of Lawfulness (Existing)Permitted
Lawful development certificate

Proposal

Works undertaken to remediate unauthorised works (windows fitted) and restore the fourth floor balcony back to its original form and appearance.

Received
14 February 2025
Decided
13 March 2025 · Granted
Decision level
Delegated (officer decision)
Ward
Regents Park
Approximate location: the centre of the postcode, not the exact property.
  1. Received14 Feb
  2. Validated17 Feb
  3. Consult.
  4. Target14 Feb
  5. Decided13 Mar

Decided in 24 days (council typically 49)

7 weeks typical decision time in Camden100% of amendment applications approved

This is an application to amend a permission at Flat 20, Thirlmere Cumberland Market London NW1 4EN. Camden has handled 241 applications of this type and approves 92% of them, typically deciding them in 50 days. This one was decided in 27 days, 3 weeks quicker than Camden's median. There are no previous applications recorded at this address. In the past year there have been 176 applications across Regents Park. We hold 3,114 applications in total for the NW1 postcode area.

Application Details

Reference
2025/0281/P
Address
Flat 20, Thirlmere Cumberland Market London NW1 4EN
Postcode
NW1 4EN
Local Authority
Camden
Application Type
Certificate of Lawfulness (Existing)
Scale / Size
Small
Decision Status
Permitted
Current Status
Final Decision
Ward
Regents Park

Applicant & Agent

Planning Application Dates

Date Received
14 February 2025
Target Decision Date
14 February 2025
Date Decided
13 March 2025
Date Validated
17 February 2025
Date Submitted
14 February 2025

Planning Decision

Decision
Granted
Decided By
Delegated

Publicity

Appeal

Additional Information

Documents
7
Coordinates
51.529217, -0.143542
Enriching application data
2/3
Council recordsAppealsFlood risk

Source: Camden

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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Planning constraints

Designations at the address point. Ones next to the site may also apply.

  • Article 4 direction: Basements
  • Flood zone 1: Low probability (rivers and sea)

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (22)

flood storage areas, conservation areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-10-09. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

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