Skip to content
PlanIndex Get alerts
Menu

Planning application

26/AP/1326

12C Alleyn Road London Southwark SE21 8AL

Granted Southwark Householder Application

Proposal

Construction of a rear extension, loft conversion, and the installation of a new window to side elevation, replacement windows and roof lights in rear extension

As published by the council, reference 26/AP/1326

Timeline

Dates from the published record

  1. 8 May 2026

    Received by Southwark

  2. 2 Jul 2026

    Decision issued: Householder - GRANTED

  3. 25 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

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.

About householder applications

How this application type works

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

Nearby applications

Within 500 metres

  • 26/AP/1793 Awaiting decision

    1 Alleyn Road London Southwark SE21 8AB

    Details to discharge Condition 4 'Landscaping Scheme' full planning application 23/AP/3087 dated 13/03/2024 for Enlargement of existing basement with 1no. Lightwell to the front and 1no. Lightwell to the south elevation, associated with new patio area in the rear garden and replacement of ground floor windows; - Construction of loft conversion with 2no. dormer windows and 2no. roof windows on northwest and southeast elevations, associated with removal of 1no. chimney to the front slope and change of roof top on garage; - Conversion of side conservatory to a bricked extension; - Enlargement of vehicular entrance to garage and blocking up of a side door, - blocking up of a rear window and door of the garage; - Installation of solar slates on front and rear roof slopes of both main house and garage; - Installation of 2nos. ASHP and 1no. AC unit on south elevation; - Proposed material railings and gates on the front boundary; Condition Number(s): 4 Conditions(s) Removal: Specifically on Point 4 of the attached it?s asking for this to be approved in advance. I?ve attached our landscaping plans. The specific planting schedule will be done closer to the time. In regards to tree protections we will protect the 5 lime trees along with their roots by having hoarding covering the existing grass area surrounding the trees. n/a

    19 Jun 2026 102m away Conditions
  • 26/AP/1143 Granted

    7 Alleyn Crescent London Southwark SE21 8BN

    Construction of a two-storey side extension; replacement of front boundary timber wall to brick; inclusion of bin store and installation of a ground floor side facing window

    21 Apr 2026 139m away Householder
  • 22/AP/3866 Granted

    3 Morkyns Walk Alleyn Park London Southwark SE21 8BG

    Replacement of existing single and double glazed timber and PVC windows with triple glazed aluminium-timber composite windows and raising of main and rear roof in order to install additional insulation and a ventilation layer.

    9 Nov 2022 147m away Full applications
  • 22/AP/3968 Granted

    3 Morkyns Walk Alleyn Park London Southwark SE21 8BG

    Holly (T1, c.5m tall) and Conifer (T2, c.4m tall) are under 60cm apart on the front elevation - Fell as close to ground level as possible because they are growing too close to the building (under 65cm and under 55cm away)

    21 Nov 2022 153m away Trees
  • 22/AP/3627 Granted

    49 Alleyn Park London Southwark SE21 8AT

    Works to a TPO tree: T1- Oak Tree, to lightly thin the crown trimming back from the neighbouring Koelreuteria tree.

    20 Oct 2022 161m away Trees
  • 22/AP/4042 Granted

    23 Alleyn Road London Southwark SE21 8AB

    T1. Mature veteran Oak tree - some removal of dead wood plus a small amount of crown lifting by up to 1.5metres in places to improve the balance and look of the tree

    25 Nov 2022 167m away Trees

In Southwark

  • 26/AP/2269 Awaiting decision

    88 Holmdene Avenue London Southwark SE24 9LE

    Side extension and replacement rear extension, replacement roof dormer, rooflights to the main roof, removal of a small single-pot chimney, and alterations to window openings in the side elevation.

    30 Jul 2026 Householder
  • 26/AP/1459 Granted

    422 Lordship Lane London Southwark SE22 8NE

    Demolition of the existing lean-to outrigger to facilitate the erection of a single storey rear extension and a raised decked area.

    21 May 2026 Householder
  • 26/AP/2252 Awaiting decision

    19 Crofton Road London Southwark SE5 8LY

    Erection of a rear dormer extension, including a 350 mm increase to the main roof ridge, rear-facing timber casement windows and rooflights to the dormer roof, together with the conversion of the existing loft storage space to provide a study, guest bedroom and associated storage.

    29 Jul 2026 Householder
  • 26/AP/1476 Granted

    2 Weald Close London Southwark SE16 3ET

    Proposed ground floor rear extension, garage conversion, loft conversion with rear dormer and 2no. rooflights to the front roof slope, floor plan redesign and all associated works at 2 Weald Close, SE16 3ET

    22 May 2026 Householder
  • 26/AP/2230 Awaiting decision

    11 Calton Avenue London Southwark SE21 7DE

    Erection of a single-storey side extension following demolition of the existing side extension.

    28 Jul 2026 Householder