57 Calton Avenue London Southwark SE21 7DF

1. 2 Oct 2025

   Received by Southwark

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 27 November 2025, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Southwark took a median of 52 days over the applications it decided in the last year.

This application is with Southwark for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

Tree applications cover work to protected trees: those under a tree preservation order need consent for pruning or felling, and trees in a conservation area need six weeks written notice before work starts. The council assesses the amenity value of the tree and can refuse consent, approve it with conditions, or in conservation areas make a preservation order in response.

More on trees applications in our guide

• 55 Calton Avenue London Southwark SE21 7DF

  23/AP/2601 Submitted 15 Sep 2023 9m away

  Proposed works to replace the existing conservatory with a new single storey side infill extension; increase the height of the rear outrigger roof to create a new bedroom within the attic space, with associated roof lights. The reconfiguration of the outrigger's first floor window and door to the terrace, and the replacement of the second floor rear dormer with a wider dormer window. Window replacements to front, rear and side elevations.

  Granted Householder Extension Loft or dormer +1 30 docs
  Small domestic

• 55 Calton Avenue London Southwark SE21 7DF

  25/AP/3065 Submitted 21 Oct 2025 9m away

  100% historically approved · decision due ~16 Dec

  Works to tree in a conservation area: Lime (T1) - crown reduce Reduce height by 3m from 11m to 8m. Reduce lateral spread by 3m from 10m to 7m. Reduction to shape canopy, pruning to suitable points and maintaining natural aesthetic. There are a number of dead limbs and die back in the canopy. The general physiological condition appears to be declining. It is hoped that the reduction will promote healthier growth. The tree will tolerate the pruning as specified above.

  Awaiting decision Trees 5 docs

• 61 Calton Avenue London Southwark SE21 7DF

  23/AP/1984 Submitted 17 Jul 2023 18m away

  Raising of the existing outrigger roof by approx. 1050mm, to provide additional floorspace on the Second Floor. A new sash window matching the existing windows will replace the small existing window of the outrigger and two rooflights are added to the outrigger roof. The existing dormer on the rear elevation is proposed to be widened by approx. 700mm with two new sash windows to match the existing. The new dormer roof will be finished with roof tiles that will match the existing.The proposed works also include a new conservatory infill extension to the Ground Floor and the Crittall -type glazed conservatory extension will have a matching glazed roof to provide further sunlight into the Ground Floor space. The existing rooflight and double doors to the side of the proposed conservatory will be replaced with a Crittall-type rooflight and double doors, respectively, to match the proposed conservatory.

  Granted Householder Extension Loft or dormer +2 32 docs
  Small domestic

• 51 Calton Avenue London Southwark SE21 7DF

  26/AP/0030 Submitted 7 Jan 2026 26m away

  Replace exiting timber framed outbuilding and hardstanding with new insulated timber framed outbuilding to be used for purposes ancillary to the main home.

  Granted Householder 19 docs
  Small domestic

• 65 Calton Avenue London Southwark SE21 7DF

  26/AP/2517 Submitted 24 Aug 2026 52m away

  95% historically approved · decision due ~29 Oct

  Construction of a ground-floor side-rear extension with terrace reinstated above; alterations to the rear outrigger, including raising the eaves and ridge, removal of the chimney stack, replacement windows, and installation of two rooflights; enlargement of the existing rear dormer; erection of bin and bike stores in the front garden, together with new landscaping and a front boundary wall; installation of an EV charger to front elevation and removal of existing front porch door; removal of existing garden buildings and erection of a shed, sauna and pergola in the rear garden, together with new landscaping and decking.

  Awaiting decision Extension Loft or dormer +1
  Small domestic

• 39 Calton Avenue London Southwark SE21 7DF

  20/AP/3048 Submitted 19 Oct 2020 69m away

  T1 - Medium Bay tree on LHS of rear garden. Tree is causing excessive shading and needs to be maintained at a significantly smaller size. Crown reduce by 50%. T2 - Umbrella Pine on RHS of garden. Tree is causing excessive shading to Japanese Acer under canopy and should be removed to allow space for this to grow. Section fell to ground level.

  Granted Trees 7 docs

• 26/AP/1574 Granted

  Land Adjacent Lovers Walk And Gallery Road London Southwark SE21 7BE

  TPO 451: Silver Birch (2609), Common Ash (2608), Norway Maple (2603), Common Lime (2594) and Broad-leaved Cockspur Thorn (2584) - Fell to ground level. Trees replaced in keeping with the Estate's Tree Replacement Policy.

  29 May 2026 Trees
• 26/AP/1537 Withdrawn

  7 Herne Hill London Southwark SE24 9NF

  Works to tree with a TP0: T1 - Sycamore- Reduce crown by 30%

  28 May 2026 Trees
• 26/AP/1481 Granted

  Grove Tavern 520 Lordship Lane London Southwark SE22 8LF

  T7885 (Ash): veteranisation. reduce to approx 8m above ground level. Retaining lateral growth up to 3m away from stem.

  22 May 2026 Trees
• 26/AP/1527 Granted

  12 Hambledon Place London Southwark SE21 7EY

  (T4) Pittosporum (no. 12) Cut overhanging branches to boundary line, crown reduce tree by 1m and crown thin by 20% - Routine maintenance. Height from 4.5m to 3.5m Crown spread from 3.0m to 2.0m

  27 May 2026 Trees
• 26/AP/1526 Granted

  11 Hambledon Place London Southwark SE21 7EY

  Works to tree with a TCA: (T5) Box Elder (no. 11) Remove deadwood, crown reduce by 1m and crown thin by 10% - routine maintenance. Height from 3.5m to 2.5m. Crown spread from 2.5m to 1.5m

  27 May 2026 Trees