14 Sinnott Road, Walthamstow, London, E17 5PL

1. 29 Sep 2025

   Received by Waltham Forest

2. 10 Aug 2026

   Added to PlanIndex

Waltham Forest granted permission, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. 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.

• 38 Sinnott Road, Walthamstow, London, E17 5PL

  260355 Submitted 9 Feb 2026 0m away

  Decision due ~6 Apr

  Prior approval for the construction of a single storey rear extension which would extend 6.00m beyond the rear wall of the existing dwelling, a maximum height of 3.16m and an eaves height of 3.00m.

  Status unknown Prior approval Extension
  Small domestic

• 43 Lawrence Avenue, Walthamstow, London, E17 5PG

  252875 Submitted 4 Dec 2025 57m away

  Lawful Development Certificate (Proposed) - Construction of a single storey outbuilding within rear garden.

  Granted Lawful development
  Small domestic

• 43 Lawrence Avenue, Walthamstow, London, E17 5PG

  252874 Submitted 4 Dec 2025 57m away

  Lawful Development Certificate (Proposed) - Construction of a hip to gable side roof extension, and dormer roof extension to main rear roof, together with installation of three roof lights to front roof slope.

  Granted Lawful development Extension Loft or dormer

• 43 Lawrence Avenue, Walthamstow, London, E17 5PG

  252869 Submitted 4 Dec 2025 57m away

  Prior approval for the construction of a single storey rear extension which would extend 6.00m beyond the rear wall of the existing dwelling, a maximum height of 3.00m and an eaves height of 3.00m.

  Granted Prior approval Extension
  Small domestic

• 43 Lawrence Avenue, Walthamstow, London, E17 5PG

  260654 Submitted 11 Mar 2026 57m away

  Lawful Development Certificate (Proposed) - Construction of a single storey outbuilding within the rear garden.

  Granted Lawful development
  Small domestic

• 26 Lawrence Avenue, Walthamstow, London, E17 5PQ

  260045 Submitted 7 Jan 2026 130m away

  Removal of the existing garage and construction of a single storey building (with lower ground floor level) to provide a self-contained dwelling studio house (1-bed) (Use Class C3) including the creation of a rear open air courtyard area, new front boundary wall, waste storage facilities and associated landscaping at Land Adjacent to 26 Lawrence Avenue.

  Refused Full applications
  Small domestic

• 261617 Status unknown

  9 Fulready Road, Leyton, London, E10 6DT

  Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof, and roof extension above two storey outrigger, with installation of three roof lights to front roof slope.

  1 Jul 2026 Lawful development
• 261619 Status unknown

  89 Marmion Avenue, Chingford, London, E4 8EJ

  Lawful Development Certificate (Proposed) – Construction of a single storey rear extension.

  1 Jul 2026 Lawful development
• 261609 Status unknown

  30 Warboys Crescent, Chingford, London, E4 9HR

  Lawful Development Certificate (Proposed) – Construction of a single storey rear extension.

  30 Jun 2026 Lawful development
• 261614 Status unknown

  1 Sopwith Avenue, E17 6TD

  Lawful Development Certificate (Proposed) - temporary removal of facade elements to allow access to the internal cavities, where insulation and cavity barriers (fire-stopping components within the wall build-up) will be replaced. Once complete, all facade materials will be reinstated, with any damaged items replaced to match the existing finish.

  30 Jun 2026 Lawful development
• 261607 Status unknown

  26A Hervey Park Road, Walthamstow, London, E17 6LJ

  Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof, together with installation of two roof lights to front roof slope.

  29 Jun 2026 Lawful development