27 Trefoil Road SW18 2EG

1. 10 Nov 2025

   Received by Wandsworth

2. 14 Nov 2025

   Validated

   Checked as complete and ready for consideration.

3. 5 Jan 2026

   Decision issued: Approve No Conditions

4. 10 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 27 Trefoil Road SW18 2EG

  2025/4081 Submitted 10 Nov 2025 0m away

  Erection of a single-storey rear/side infill extension

  Granted Householder Extension 12 docs
  Small domestic

• 23 Trefoil Road SW18 2EG

  2025/4217 Submitted 21 Nov 2025 11m away

  Alterations including erection of single-storey rear/side extension. and insertion of rooflights to main front rooflsope and above existing rear dormer.

  Granted Householder Extension Loft or dormer 7 docs
  Small domestic

• 33 Trefoil Road SW18 2EG

  2026/1261 Submitted 31 Mar 2026 16m away

  Alterations including erection of mansard roof extension to main rear roof including raising the ridge by 300mm and extension above part of the back addition.

  Granted Householder Extension Loft or dormer 10 docs
  Domestic

• 26 Cicada Road SW18 2NW

  2023/1520 Submitted 20 Apr 2023 34m away

  Alterations including erection of roof extension above three storey back addition; installation of 6 x solar panels to main and extension roofs.

  Withdrawn Householder Extension 7 docs
  Domestic

• Maisonette First And Second Floors 4 Cicada Road SW18 2NW

  2026/2940 Submitted 24 Aug 2026 40m away

  89% historically approved · decision due ~19 Oct

  Alterations including erection of mansard roof extension to main rear roof (with French doors and safety railings) including raising the ridge by 150mm; formation of roof terrace above part of two-storey back addition with 1.7m high screen surround to side and 1.1m high to rear; insertion of new windows to side elevation of back addition

  Awaiting decision Extension Loft or dormer +1

• 21 Cicada Road SW18 2NN

  2025/4444 Submitted 9 Dec 2025 66m away

  Alterations including erection of roof extension to main rear roof.

  Granted Lawful development Extension 16 docs

• 2026/3093 Awaiting decision

  208 Franciscan Road SW17 8HG

  Lawful development for loft conversion.

  27 Aug 2026 Lawful development
• 2026/3014 Withdrawn

  1 St Hildas Close SW17 7UL

  Installation of new wooden fence and gate to front of property.

  21 Aug 2026 Lawful development
• 2026/3006 Awaiting decision

  137 Tooting Bec Road SW17 8BW

  Erection of a dormer extension to main rear roof slope.

  20 Aug 2026 Lawful development
• 2026/2965 Awaiting decision

  10 Kenilford Road SW12 9PR

  Alterations including erection of mansard roof extension to main rear roof (with French doors and safety railings) including raising the ridge by 700mm and extension above two-storey back addition.

  18 Aug 2026 Lawful development
• 2026/2857 Withdrawn

  11 Brookwood Road SW18 5BL

  Erection of timber framed pergola in rear garden.

  10 Aug 2026 Lawful development