10 Blenheim Gardens, London, NW2 4NS

This site has had 4 applications since 2024: 1 approved, 3 refused.

• 25/3486 Granted

  10 Blenheim Gardens, London, NW2 4NS

  Certificate of lawfulness for proposed single-storey outbuilding in rear garden of dwellinghouse

  Decided 22 Jan 2026 Lawful development
• 25/3264 Refused

  10 Blenheim Gardens, London, NW2 4NS

  Proposed demolition of rear extension, proposed single storey rear extension, part first floor rear extension, replacement of 1x front rooflight and first floor windows on rear elevation, addition of 1x front rooflight, 1x side rooflight and 1x rear rooflight, additional parking space in front garden and replacement of fence to the front garden of the dwellinghouse.

  Decided 5 Feb 2026 Householder
• 24/2288 Refused

  10 Blenheim Gardens, London, NW2 4NS

  Certificate of lawfulness for proposed change of use from 6 bed HMO to single dwellinghouse.

  Decided 7 Nov 2024 Lawful development

1. 31 Oct 2025

   Received by Brent

2. 24 Dec 2025

   Decision issued: Certificate of Lawfulness - Refused

3. 11 Aug 2026

   Added to PlanIndex

Brent refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 32 Blenheim Gardens, London, NW2 4NS

  19/3904 Submitted 4 Nov 2019 50 yards away

  Enlargement of existing basement with addition of side and rear lightwells and associated pedestrian access way to dwellinghouse

  Granted Householder 10 docs
  Domestic

• 34 Blenheim Gardens, London, NW2 4NS

  25/2342 Submitted 12 Aug 2025 50 yards away

  Demolition of rear conservatory and erection of single-storey side-to-rear extension and raised rear terrace with glass balustrade to ground floor flat

  Refused Full applications Extension Demolition 5 docs
  Small domestic

• 34 Blenheim Gardens, London, NW2 4NS

  22/0941 Submitted 14 Mar 2022 50 yards away

  Erection of a timber outbuilding in rear garden to ground floor flat

  Granted Full applications 5 docs

• 10 Blenheim Gardens, London, NW2 4NS

  25/3264 Submitted 21 Nov 2025 50 yards away

  Proposed demolition of rear extension, proposed single storey rear extension, part first floor rear extension, replacement of 1x front rooflight and first floor windows on rear elevation, addition of 1x front rooflight, 1x side rooflight and 1x rear rooflight, additional parking space in front garden and replacement of fence to the front garden of the dwellinghouse.

  Refused Householder Extension Loft or dormer +2 4 docs
  Small domestic

• 30A Blenheim Gardens, London, NW2 4NS

  24/3247 Submitted 18 Nov 2024 50 yards away

  Proposed removal of chimney shaft and various fenestration alterations/replacements to first floor flat comprising: - Alterations and replacement to rear first floor window; - Removal of window and insertion of double glazed aluminium window to first floor south side elevation; - Replacement of existing ground floor side entrance door with double glazed aluminium door; and - Replacement of existing ground floor side window with double glazed aluminium window.

  Granted Full applications Windows or glazing 9 docs

• 42C Blenheim Gardens, London, NW2 4NS

  21/2426 Submitted 28 Jun 2021 50 yards away

  Details pursuant to condition 5 (construction logistics plan) of Full Planning Permission reference 20/0741 dated 30 June, 2020, for Basement extension with creation of side lightwell and sunken patio to rear; replacement of door and external staircase to existing rear extension; installation of juliet balcony to rear and opening of 2 new windows to side elevation at ground floor level; widening of vehicle crossover to create additional parking spaces with associated landscaping to maisonette

  Granted Conditions Extension Windows or glazing 4 docs

• 26/2285 Awaiting decision

  137 Chatsworth Road, London, NW2 5QT

  Certificate of lawfulness for proposed use as supported housing

  Received 8 Sep, published by the council 21 Sep 2026 Lawful development
• 26/2277 Awaiting decision

  65 The Avenue, Wembley, HA9 9PH

  Certificate of lawfulness for proposed conversion of outbuilding into a gym and sauna and extension to the outbuilding in rear garden of the dwellinghouse.

  Received 8 Sep, published by the council 21 Sep 2026 Lawful development
• 26/2199 Awaiting decision

  Flat 8, 399 Neasden Lane North, London, NW10 0BD

  Certificate of lawfulness for existing use of rear unit 8 as a self-contained flat.

  Received 2 Sep, published by the council 21 Sep 2026 Lawful development
• 26/2093 Awaiting decision

  17 Buller Road, London, NW10 5BS

  Certificate of lawfulness for proposed alterations to front, side and rear fenestrations including installation of ground floor side oriel window and rear timber door to dwellinghouse

  Received 18 Aug, published by the council 21 Sep 2026 Lawful development
• 26/1208 Granted

  50 Ballogie Avenue, London, NW10 1TA

  Certificate of lawfulness for proposed rear dormer extension, hip to gable roof extension, alteration to fenestration and installation of rooflights to the dwellinghouse

  Received 13 May, published by the council 25 Jul 2026 Lawful development