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Planning application

26/AP/2014

11 Calton Avenue London Southwark SE21 7DE

Awaiting decision Southwark Certificate of Lawful Dev. - Proposed

Proposal

Certificate of lawfulness (proposed) for removal of existing rear extension and construction of a new ground floor rear extension.

As published by the council, reference 26/AP/2014

Timeline

Dates from the published record

  1. 9 Jul 2026

    Received by Southwark

  2. 10 Jul 2026

    Validated

    Checked as complete and ready for consideration.

  3. 25 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

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.

About lawful development applications

How this application type works

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

Nearby applications

Within 500 metres

  • 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 3m away Householder
  • 26/AP/1965 Granted

    20 Calton Avenue London Southwark SE21 7DQ

    5 DAY NOTIFICATION: 3917 Tree of heaven Deadwood > 5cm Remove major deadwood 3926 Common lime Deadwood > 5cm Remove major deadwood. 3921 Common lime Deadwood > 5cm Remove deadwood over rear garden and footpath. Also Clear basal epicormic growth to allow for ground level to 1.5m inspection.

    7 Jul 2026 42m away Trees
  • 22/AP/3949 Granted

    Common Land Rear 55 And 56 Dekker Road London Southwark SE21 7DJ

    Works to a tree in a conservation area: Works: Crown lift to 4m above rear garden + lateral reduce by up to 2m back to suitable growth points, retaining overall height and form. Reason: to abate nuisance.

    17 Nov 2022 45m away Trees
  • 26/AP/1312 Granted

    10B Calton Avenue London Southwark SE21 7DQ

    Works to tree with a TCA: T1- 3908 Smokebush (Crown Reduction - Reduce north eastern limb to 50cm away from stem, back to closest growth point and repollard). T2 - 3909 Smokebush (Crown Reduction - Reduce north eastern limb by 1m back to closest growth point. And repollard). T3 - 3907 Smokebush (Crown Reduction - Reduce limb at 1.2m above ground level back to stem (natural target prune). Also Repollard).

    7 May 2026 47m away Trees
  • 26/AP/1314 Granted

    33 Calton Avenue London Southwark SE21 7DE

    Tree ID -Common Name Work Task Description 7874 Common Lime Crown Lift crown lift to 2.4m above ground level over pavement and over adjacent property (reduce back to closest growth point). retaining branches where applicable. 7869 Common lime - Crown Lift .crown lift to 2.4m above ground level over pavement. (reduce to closest growth point) retaining branches where applicable.

    7 May 2026 57m away Trees
  • 22/AP/3874 Decided

    Land To Rear Of 25 Dulwich Village London Southwark SE21 7BN

    Non material amendment of planning permission 19/AP/1788: Variation of Condition 1 - Approved Plans - as required by planning permission 14/AP/3104 (Redevelopment of the site to include the demolition of all existing buildings (Use Class B2) and the excavation and removal of fuel tanks and associated supply lines and the construction of 12 dwellings (Use Class C3), 1 x 2 bed and 2 x 1 bed affordable dwellings, 1 x 3 bed house (affordable, wheelchair accessible dwelling), 4 x 4 bed houses and 4 x 5 bed houses with ancillary living accommodation and car parking at basement level accessed from Gilkes Place and landscaping): Removal of Grade II listed Stocks Memorial Plaque.

    9 Nov 2022 60m away Conditions

In Southwark

  • 26/AP/1647 Granted

    7 Medlar Street London Southwark SE5 0JU

    Certificate of lawfulness (proposed) for the construction of an L-shaped rear dormer extension and installation of 2no. rooflights to the front roof slope

    8 Jun 2026 Lawful development
  • 26/AP/2189 Awaiting decision

    Surrey Square Park Surrey Square London Southwark SE17 2JX

    Certificate of Lawfulness (existing) for refurbishment and reconfiguration of the existing children's playground and landscape improvements including new pathways and planting within Surrey Square Park.

    24 Jul 2026 Lawful development
  • 26/AP/2168 Awaiting decision

    150A Lower Road London Southwark SE16 2UG

    Certificate of lawfulness (proposed) for the change of use of a single dwellinghouse (Use Class C3) to a House in Multiple Occupation (Use Class C4) occupied by three unrelated individuals.

    22 Jul 2026 Lawful development
  • 26/AP/1618 Granted

    252 Barry Road London Southwark SE22 0JS

    Certificate of lawful development (proposed) for the construction of a rear dormer extension.

    5 Jun 2026 Lawful development
  • 26/AP/1577 Granted

    Residence Inn By Marriott London Bridge 201-211 Long Lane London SE1 4PN

    Certificate of lawfulness (proposed) for undertaking of facade remedial works to remove combustible cladding materials and replace with a like-for-like non-combustible cladding with no change to the outer aesthetics of the building.

    2 Jun 2026 Lawful development