42 Haslemere Avenue Barnet EN4 8EZ

This site has had 2 applications since 2025.

• 25/4855/HSE Awaiting decision

  42 Haslemere Avenue Barnet EN4 8EZ

  Single storey front extension including new porch. Single storey rear extension with new terrace area and access steps. Part single, part two storey side extension

  Submitted 4 Dec 2025 Householder

1. 4 Dec 2025

   Received by Barnet

2. 5 Dec 2025

   Validated

   Checked as complete and ready for consideration.

3. 10 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 30 January 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Barnet took a median of 46 days over the applications it decided in the last year.

This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet decided lawful development applications in a median of 28 days. More in our guide to how long planning decisions take.

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.

• 42 Haslemere Avenue Barnet EN4 8EZ

  25/4855/HSE Submitted 4 Dec 2025 50 yards away

  77% historically approved · decision due ~29 Jan

  Single storey front extension including new porch. Single storey rear extension with new terrace area and access steps. Part single, part two storey side extension

  Awaiting decision Householder Extension 8 docs
  Small domestic

• 46 Haslemere Avenue Barnet EN4 8EZ

  26/1153/192 Submitted 26 Mar 2026 50 yards away

  Roof extension involving hip to gable, replacement rear dormer window with juliette balcony and new side gable window

  Granted Lawful development Extension Loft or dormer +1 11 docs

• 46 Haslemere Avenue Barnet EN4 8EZ

  26/1165/HSE Submitted 26 Mar 2026 50 yards away

  Single storey rear extension with extended raised patio area with glass balustrade and external steps. Part conversion of the existing garage into a habitable room, including alterations to roof

  Granted Householder Extension 14 docs
  Small domestic

• 32 Haslemere Avenue Barnet EN4 8EZ

  26/1095/HSE Submitted 23 Mar 2026 50 yards away

  77% historically approved · decision due ~27 May

  Single storey front porch and rear extenision with access steps and patio area. Conversion of the existing garage into habitable room with new pitch roof and insertion of window to replace garage door

  Awaiting decision Householder Extension Windows or glazing 8 docs
  Small domestic

• 32 Haslemere Avenue Barnet EN4 8EZ

  25/5105/PNH Submitted 18 Dec 2025 50 yards away

  56% historically approved · decision due ~13 Feb

  Single-storey rear extension measuring a maximum 6.0m in depth from rear wall, 3.85m maximum height and eaves height

  Awaiting decision Prior approval Extension 9 docs
  Small domestic

• 32 Haslemere Avenue Barnet EN4 8EZ

  26/2512/192 Submitted 3 Jul 2026 100 yards away

  79% historically approved · decision due ~28 Aug

  Roof extension involving hip to gable, rear dormer window, 3no. front-facing rooflights and new side gable window following the removal of the chimney. Erection of a rear outbuilding. (Amended Description)

  Awaiting decision Extension Loft or dormer +1

• 26/2679/192 Granted

  21 Myddelton Park London N20 0JH

  Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).

  Received 20 Jul, published by the council 7 Aug 2026 Lawful development
• 26/1362/191 Refused

  145 Cotswold Gardens London NW2 1PL

  Use as a House in Multiple Occupation (HMO) for 6 people

  Received 14 Apr, published by the council 25 Jul 2026 Lawful development
• 26/1907/191 Granted

  8 Golders Manor Drive London NW11 9HT

  Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

  Received 21 May, published by the council 16 Aug 2026 Lawful development
• 26/2392/192 Refused

  6 Mostyn Road Edgware HA8 0JD

  New front hardstanding and vehicular access to provide off-street parking

  Received 23 Jun, published by the council 9 Aug 2026 Lawful development
• 26/2059/192 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  Received 3 Jun, published by the council 16 Aug 2026 Lawful development