18 Watson Avenue North Cheam SM3 9RE

1. 7 Aug 2026

   Received by Sutton

2. 12 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 2 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Sutton took a median of 56 days over the applications it decided in the last year.

This application is with Sutton for determination, against a statutory target of eight weeks. Over the last year Sutton's median decision took 56 days. More in our guide to how long planning decisions take.

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 0m 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 0m 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 41m 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 41m 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

• 5 Watson Avenue North Cheam SM3 9RE

  DM2025/01311 Submitted 20 Oct 2025 54m 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

• 162 Hamilton Avenue North Cheam Sutton SM3 9DT

  DM2021/02486 Submitted 16 Dec 2021 88m away

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

  Granted Householder Extension 7 docs
  Small domestic