74 Mansfield Avenue Barnet EN4 8QF

This site has had 2 applications since 2025.

• 25/4120/HSE Awaiting decision

  74 Mansfield Avenue Barnet EN4 8QF

  First floor rear extension with juliette balcony and addition of two new windows openings. Conversion of the existing garage into habitable room, insertion of window to replace the garage door

  Submitted 14 Oct 2025 Householder

1. 5 Jan 2026

   Received by Barnet

2. 7 Jan 2026

   Validated

   Checked as complete and ready for consideration.

3. 10 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 4 March 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 householder applications in a median of 56 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 74 Mansfield Avenue Barnet EN4 8QF

  25/4120/HSE Submitted 14 Oct 2025 50 yards away

  77% historically approved · decision due ~10 Dec

  First floor rear extension with juliette balcony and addition of two new windows openings. Conversion of the existing garage into habitable room, insertion of window to replace the garage door

  Awaiting decision Householder Extension Windows or glazing 10 docs
  Domestic

• 7 Vernon Crescent Barnet EN4 8QG

  26/0210/HSE Submitted 20 Jan 2026 50 yards away

  77% historically approved · decision due ~17 Mar

  Erection of a rear outbuilding

  Awaiting decision Householder 4 docs
  Small domestic

• Land Adjacent To 40 Cornell Gardens Barnet EN4

  24/00300/TPO Submitted 1 Feb 2024 50 yards away

  Works to 1 x Robina tree covered by LBE Tree Preservation Order (No.351) 2011- Fell down to 2-3m stump.

  Granted Trees 8 docs

• 180 Cat Hill Barnet EN4 8HU

  25/4134/PNH Submitted 14 Oct 2025 100 yards away

  Single storey rear extension with a proposed depth of 4.45 metres, maximum height of 3.0 metres and eaves height of 2.8 metres.

  Granted Prior approval Extension 6 docs
  Small domestic

• 67 Mansfield Avenue Barnet EN4 8QE

  TPP/0763/25 Submitted 14 Nov 2025 100 yards away

  1 x Hornbeam (applicants ref. T1) - Crown thin by 20%. Raise Crown an additional 0.5m from ground level making sure screening of shed is maintained. Reduce selected areas of the upper crown by pruning in the extraneous growth by approx 1m and lightly reduce any extraneous lateral growth to balance the light height reduction works. Do not reduce the whole tree as this would only encourage re-growth and change its natural shape. Remove dead wood. Standing in T22 of Tree Preservation Order.

  Granted Trees 4 docs
  Small domestic

• 180 Cat Hill Barnet EN4 8HU

  25/3390/PNH Submitted 13 Aug 2025 100 yards away

  Single storey rear extension with a depth of 4.50 metres, maximum height of 3.40 metres and eaves height of 3.20 metres. Adjoining onto the existing extension.

  Refused Prior approval Extension 6 docs
  Small domestic

• 26/3853/HSE Awaiting decision

  30 Goldsmith Avenue London NW9 7HB

  Single storey rear extension following demolition of the existing extension

  23 Oct 2026 Householder
• 26/3856/HSE Awaiting decision

  229 Hale Drive London NW7 3EH

  Single storey rear extension

  23 Oct 2026 Householder
• 26/3827/HSE Awaiting decision

  43 Hermitage Lane London NW2 2HE

  Single storey rear extension with 3no. rooflights following demolition of the existing conservatory. Replacement front bay window and entrance porch. First floor rear juliette balcony. Changes to fenestration including new window openings and enlarged front rooflight

  22 Oct 2026 Householder
• 26/3833/HSE Awaiting decision

  47 Holne Chase London N2 0QG

  Single storey rear extension. Replacement of single glazed windows with double glazing. Alterations to side/rear fenestration. Alterations and replacement of existing rear dormer window addition of 2no. side dormer windows and 3no. rooflights. Installation of cameras and wall lights. Replacement of the front entrance and garage doors, installation of timber side garden gates

  22 Oct 2026 Householder
• 26/3841/HSE Awaiting decision

  Manor House West Heath Close London NW3 7NJ

  New metal framed pergola to upper ground floor rear terrace

  Received 22 Oct, published by the council 23 Oct 2026 Householder