33 Onslow Avenue Cheam SM2 7ED

This site has had 4 applications since 2023: 2 approved, 2 refused.

• DM2025/01417 Granted

  33 Onslow Avenue Cheam SM2 7ED

  Retention of a front entrance porch, installation of rooflights to the single storey flank extension, alteration to the single storey rear extension roof detail, installation of an air source heat pump and two air conditioning units to ground floor rear elevation, alterations to front boundary treatment/forecourt and rear terrace with steps leading up to rear garden land, alteration to front, side and rear fenstrations and alteration to external finishes.

  Decided 2 Mar 2026 Householder
• DM2025/01179 Refused

  33 Onslow Avenue Cheam SM2 7ED

  Non material amendment to approved application DM2024/00527 which allowed the 'Erection of a single storey rear extension,' to allow for alterations to rear extension roof eaves and verge and installation of two air conditioning units to rear elevation.

  Decided 7 Oct 2025 Amendments
• DM2025/01060 Refused

  33 Onslow Avenue Cheam SM2 7ED

  Non material amendment to approved application DM2023/01555 which allowed the 'Erection of a two-storey rear extension and conversion of existing garage into a habitable room, formation of a front entrance canopy and alterations to fenestration to all elevations, conversion of loft space, involving alterations to the existing roof line, increase of the ridge height of the main roof, two dormers to rear roofslope and a rooflight to front roofslope' to allow the formation of a front entrance porch, alterations to the front entrance door detail, alterations to fenestrations and external finish, installation of an air source heat pump to rear and installation of rooflights to ground floor flank utility room together with roof alterations.

  Decided 8 Oct 2025 Amendments

1. 6 Jul 2023

   Received by Sutton

2. 17 Jul 2023

   Validated

   Checked as complete and ready for consideration.

3. 6 Sep 2023

   Decision issued: Application Granted

4. 1 Sep 2026

   Added to PlanIndex

Sutton granted permission on 6 September 2023, 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.

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.

• 33 Onslow Avenue Cheam SM2 7ED

  DM2025/01179 Submitted 15 Sep 2025 50 yards away

  Non material amendment to approved application DM2024/00527 which allowed the 'Erection of a single storey rear extension,' to allow for alterations to rear extension roof eaves and verge and installation of two air conditioning units to rear elevation.

  Refused Amendments Extension 6 docs
  Small domestic

• 33 Onslow Avenue Cheam SM2 7ED

  DM2025/01417 Submitted 14 Nov 2025 50 yards away

  Retention of a front entrance porch, installation of rooflights to the single storey flank extension, alteration to the single storey rear extension roof detail, installation of an air source heat pump and two air conditioning units to ground floor rear elevation, alterations to front boundary treatment/forecourt and rear terrace with steps leading up to rear garden land, alteration to front, side and rear fenstrations and alteration to external finishes.

  Granted Householder Extension Loft or dormer 17 docs
  Small domestic

• 33 Onslow Avenue Cheam SM2 7ED

  DM2025/01060 Submitted 13 Aug 2025 50 yards away

  Non material amendment to approved application DM2023/01555 which allowed the 'Erection of a two-storey rear extension and conversion of existing garage into a habitable room, formation of a front entrance canopy and alterations to fenestration to all elevations, conversion of loft space, involving alterations to the existing roof line, increase of the ridge height of the main roof, two dormers to rear roofslope and a rooflight to front roofslope' to allow the formation of a front entrance porch, alterations to the front entrance door detail, alterations to fenestrations and external finish, installation of an air source heat pump to rear and installation of rooflights to ground floor flank utility room together with roof alterations.

  Refused Amendments Extension Loft or dormer +2 6 docs
  Small domestic

• 1 Scarborough Close Cheam Surrey SM2 7EA

  A2002/50016 Submitted 6 Dec 2002 50 yards away

  Erection of a conservatory at rear.

  Granted Householder Extension
  Small domestic

• 6 Scarborough Close Cheam SM2 7EA

  A2002/49574 Submitted 21 Aug 2002 50 yards away

  Rebuilding of garage with extension over, erection of a two storey bay extension and enlargement of dormer extension at front.

  Granted Householder Extension Loft or dormer
  Domestic

• 26 High View Cheam SM2 7DY

  DM2021/02244 Submitted 9 Nov 2021 50 yards away

  Demolition of existing rear garage and lean to. Erection of a part one, part two side/rear extension, front entrance porch and installation of a new vehicle crossover to High View.

  Granted Householder Extension Demolition 15 docs
  Small domestic

• DM2026/00600 Granted

  5 Waterer Rise Wallington SM6 9DN

  Erection of front boundary gates with walls, piers and railings.

  Received 14 May, published by the council 25 Jul 2026 Householder
• DM2026/00764 Granted

  12 The Causeway Sutton SM2 5RS

  Erection of a single storey rear extension and provision of a raised rear terrace and steps, two dormer extensions to both front and rear roofslopes, alterations to roof of existing single storey side extension, partial conversion of garage into habitable room and alterations to fenestrations.

  Received 23 Jun, published by the council 25 Jul 2026 Householder
• DM2026/00544 Granted

  18 Cheviot Close Sutton SM2 5SB

  Erection of a single storey front, side and rear extension.

  Received 29 Apr, published by the council 25 Jul 2026 Householder
• DM2026/00083 Granted

  53 Oxford Road Carshalton SM5 3QZ

  Erection of a part one, part two storey side and rear extension. Conversion of loft space involving alterations to existing roofline, a dormer extension at rear and rooflights to front roofslope.

  Received 27 Jan, published by the council 27 Jul 2026 Householder
• DM2026/00644 Granted

  37 Farm Way Worcester Park KT4 8RZ

  Erection of a single storey rear extension and conversion of the garage to a habitable room with associated external works.

  Received 26 May, published by the council 25 Jul 2026 Householder