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Planning application

21 KNOWLES HILL CRESCENT, LONDON, SE13 6DT

Granted Lewisham DC/25/142424 Lawful Development Certificate proposed

Works: Extension Loft or dormer Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) and Classes A, B, C and G of Schedule 2, Part 1 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the construction of a single-storey rear extension, rear dormer, three front roof lights, new soil vent pipe and new side window.

As published by the council, reference DC/25/142424

Application record

Reference
DC/25/142424
Type
Lawful Development Certificate proposed
Status
Decided
Decision
Granted
Received
12 Dec 2025
Validated
18 Dec 2025
Decided
5 Feb 2026
Ward
Hither Green
Parish
Does NOT need to go to BCAP
Decision by
Delegated
Postcode
SE13 6DT

Site history

Applications at this address on the Lewisham register

This site has had 2 applications since 2025: 2 approved, 0 refused.

  • DC/25/142409 Granted

    21 KNOWLES HILL CRESCENT, LONDON, SE13 6DT

    Application for Prior Approval under Schedule 2, Part 1, Class A, Part (g) of the Town and Country Planning (General Permitted Development) Order 2015 (as amended) for the construction of a single storey rear extension with a depth of 5.37m, a maximum height of 3.16 m and an eaves height of 3.00m at 21 Knowles Hill Crescent, SE13.

    Decided 9 Jan 2026 Prior approval

Timeline

Dates from the published record

  1. 12 Dec 2025

    Received by Lewisham

  2. 18 Dec 2025

    Validated

    Checked as complete and ready for consideration.

  3. 5 Feb 2026

    Decision issued: Granted

  4. 25 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Ambo Architects London Agent, an architecture practice

10 applications on PlanIndex · across 3 councils

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Documents

Plans, drawings, consultee responses and the officer's report

9 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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What this grant of permission means

Lewisham granted permission on 5 February 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 21 KNOWLES HILL CRESCENT, LONDON, SE13 6DT

    DC/25/142409 Submitted 11 Dec 2025 50 yards away

    Application for Prior Approval under Schedule 2, Part 1, Class A, Part (g) of the Town and Country Planning (General Permitted Development) Order 2015 (as amended) for the construction of a single storey rear extension with a depth of 5.37m, a maximum height of 3.16 m and an eaves height of 3.00m at 21 Knowles Hill Crescent, SE13.

    Granted Prior approval Extension 9 docs
    Small domestic

  • 33 NIGHTINGALE GROVE, LONDON, SE13 6EY

    DC/23/132426 Submitted 20 Jul 2023 50 yards away

    Application submitted under Section 96a of the Town & Country Planning Act 1990 (as amended) for a non-material amendment to planning permission DC/22/125982 dated 06 July 2023 to revise the wording of Condition 30 (Protecting Residential Properties from Noise) at 33 Nightingale Grove, SE13.

    Granted Amendments 3 docs

  • 5 NIGHTINGALE GROVE, LONDON, SE13 6EY

    DC/13/082948/FT Submitted 18 Mar 2013 50 yards away

    Certificate of Lawfulness (existing) in respect of the use of 5 Nightingale Grove SE13 as 2 two bedroom self-contained flats.

    Refused Lawful development New dwelling 7 docs

  • 5 NIGHTINGALE GROVE, LONDON, SE13 6EY

    DC/13/82948/FT Submitted 18 Mar 2013 50 yards away

    Certificate of Lawfulness (existing) in respect of the use of 5 Nightingale Grove SE13 as 2 two bedroom self-contained flats.

    Refused Lawful development New dwelling 7 docs

  • 5 NIGHTINGALE GROVE, LONDON, SE13 6EY

    DC/12/082253/FT Submitted 31 Dec 2012 50 yards away

    Lawful Development Certificate (existing) in respect of the conversion of 5 Nightingale Grove SE13 to 2 two-bedroom self-contained flats.

    Refused Lawful development New dwelling 7 docs

  • 5 NIGHTINGALE GROVE, LONDON, SE13 6EY

    DC/12/82253/FT Submitted 31 Dec 2012 50 yards away

    Lawful Development Certificate (existing) in respect of the conversion of 5 Nightingale Grove SE13 to 2 two-bedroom self-contained flats.

    Refused Lawful development New dwelling 7 docs

In Lewisham

  • DC/26/143983 Granted

    1 SANDROCK ROAD, LONDON, SE13 7TS

    Application for a Lawful Development Certificate existing submitted under Section 191 of the Town & Country Planning Act 1990 (as amended) to establish that the lawful use of 1 Sandrock Road, SE13, is as a small house in multiple occupation for no more than six residents.

    Received 12 May, published by the council 25 Jul 2026 Lawful development
  • DC/26/143740 Granted

    GROUND FLOOR FLAT, 46 HALESWORTH ROAD, LONDON, SE13 7TL

    Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the siting of a single-unit mobile home for ancillary use to the dwelling at Ground Floor Flat, 46 Halesworth Road SE13.

    Received 20 Apr, published by the council 25 Jul 2026 Lawful development
  • DC/26/144365 Granted

    21 HEATHER ROAD, LONDON, SE12 0UG

    Application for a Lawful Development Certificate (existing) submitted under Section 191 of the Town & Country Planning Act 1990 (as amended) for the use of property as a house in multiple occupation (C4 Use Class) at 21 Heather Road, SE12

    Received 16 Jun, published by the council 25 Jul 2026 Lawful development
  • DC/26/144317 Granted

    154 MINARD ROAD, LONDON, SE6 1NJ

    Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) and Class A of Schedule 2, Part 1 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the construction of a single-storey rear extension at 154 Minard Road, SE6

    Received 15 Jun, published by the council 25 Jul 2026 Lawful development
  • DC/26/144314 Granted

    273 BROWNHILL ROAD, LONDON, SE6 1AE

    Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) for change of use from Class E(a) 'for the display or retail sale of goods other than hot food principally to visiting members of the public' to Class E(b) for the sale of food and drink principally to visiting members of the public where consumption of that food and drink is mostly undertaken on the premises at 273 Brownhill Road, London SE6 1AE.

    Received 12 Jun, published by the council 25 Jul 2026 Lawful development