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25, Lonsdale Square, London, N1 1EW

P2025/2913/FULFull Planning (Householder)Approved
Householder

Approved on 16 April 2026

Council decision: Approve with conditions

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Lower ground floor damp works to perimeter. Lower ground floor internal layout, wall and door alterations. Associated works to electrics. New insulated slab to lower ground floor. New sanitaryware and tiles to all wc's and bathrooms to all floors. New fireplaces, inserts and hearths. New carpentry and flooring. Lower ground floor kitchen changed to utility and dressing room. Repairs and refurbishment to windows and brickwork. New flat roof membrane to existing rear extension. [Listed Building Consent P2025/2914/LBC also submitted].

Received
15 October 2025
Ward
Barnsbury
  1. Received15 Oct
  2. Validated27 Oct
  3. Consult.4 Mar
  4. Target21 Dec
  5. Decided16 Apr

Decided in 171 days (council typically 56)

About this application

This is a full planning application for a rear extension at 25, Lonsdale Square, London, N1 1EW. Islington has handled 1,802 applications of this type. This one was decided in 183 days, 18 weeks longer than Islington's typical decision time. The site is in a conservation area, with 11 listed buildings nearby. There have been 2 other applications at this address. In the past year there have been 167 applications across Barnsbury. We hold 4,098 applications in total for the N1 postcode area.

90% of full applications at London Borough of Islington were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Postcode
N1 1EW
Application type
Full Planning (Householder)
Scale / size
Medium

Planning application dates

Date validated
27 October 2025
Consultation expiry
4 March 2026
Consultation end
4 March 2026
Target decision date
21 December 2025
Application expires
7 March 2026

Planning decision

Statutory period
131 days

Publicity

First advertised
11 February 2026
Site notice start
11 February 2026

Additional information

Planning Portal ID
PP-14252945
UPRN
5300058596
Documents
47

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Barnsbury
  • Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: Article 4 directions and tree preservation orders. Ask the council if these matter.

Also checked, none recorded (21)

flood storage 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 2026-11-03. 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.

Associated applications

  1. 2026
    3 Jun

    Approval of details pursuant to condition 4&5 of planning consent reference P2025/2914/LBC

    Comment IssuedDischarge of conditionsP2026/1427/AOD
  2. 2025
    15 Oct

    Lower ground floor damp works to perimeter. Lower ground floor internal layout, wall and door alterations…

    This applicationApprovedListed building consentP2025/2913/FUL
  3. 2025
    15 Oct

    Lower ground floor damp works to perimeter. Lower ground floor internal layout, wall and door alterations…

    ApprovedListed building consentPart ofP2025/2914/LBC

Source: Islington

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

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