18 Watson Avenue North Cheam SM3 9RE

1. 7 Aug 2026

   Received by Sutton

2. 12 Aug 2026

   Added to PlanIndex

3. 17 Sep 2026

   Decision issued: Prior Approval Approved

4. 17 Sep 2026

   Status changed to Prior Approval Approved

   Previously Pending Consideration.

Sutton granted permission on 17 September 2026, 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.

The published feed does not state which type of application this is; the register entry on Sutton's portal will say. Our guide explains the common types.

• 4 Watson Avenue North Cheam Surrey SM3 9RE

  A2002/49352 Submitted 5 Jul 2002 50 yards away

  Erection of a single storey rear extension and a dormer extension at rear involving alterations to existing roofline.

  Granted Householder Extension Loft or dormer
  Small domestic

• 8 Watson Avenue North Cheam Surrey SM3 9RE

  A2004/51952 Submitted 3 Feb 2004 50 yards away

  Formation of a dormer extension at rear involving alterations to existing roofline.

  Granted Outline Extension Loft or dormer

• 26 Watson Avenue North Cheam Sutton SM3 9RE

  DM2021/02304 Submitted 16 Nov 2021 50 yards away

  Prior Approval for a single storey rear extension projecting from the rear of the original house by 5m.

  Granted Householder Extension 4 docs
  Small domestic

• 26 Watson Avenue North Cheam SM3 9RE

  DM2021/02295 Submitted 16 Nov 2021 50 yards away

  Conversion of loft space involving alterations to existing roofline, including a hip to gable extension to side and a dormer extension to rear roof slope and roof lights to front roof slope.

  Granted Outline Extension Loft or dormer 5 docs

• 63 Hamilton Avenue North Cheam SM3 9EA

  DM2026/01161 Submitted 6 Oct 2026 50 yards away

  88% historically approved · decision due ~1 Dec

  Prior Approval for a single storey rear extension projecting from the rear of the original house by 6m.

  Awaiting decision Extension
  Small domestic

• 5 Watson Avenue North Cheam SM3 9RE

  DM2025/01311 Submitted 20 Oct 2025 50 yards away

  Conversion of loft space involving alterations to existing roofline, a dormer extension at rear, a window to flank roofslope and rooflights to front roofslope and removal of rear chimney stack.

  Granted Outline Extension Loft or dormer +1 16 docs