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Planning application

12 Cannon Place London NW3 1EJ

Refused Camden 2012/5323/L Heritage and listed buildings

Works: Extension Demolition Small domestic

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

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

Proposal

Erection of a single storey rear extension following demolition of existing conservatory to dwelling house (Class C3)

As published by the council, reference 2012/5323/L

Application record

Reference
2012/5323/L
Category
Heritage and listed buildings
Status
Final Decision
Decision
Refused
Decided
12 Dec 2012
Postcode
NW3 1EJ

Site history

Applications at this address on the Camden register

This site has had 8 applications since 2012: 6 approved, 2 refused.

  • 2025/0322/T Granted

    12 Cannon Place London NW3 1EJ

    (TPO REF: 10H-T56) REAR GARDEN: 1 x London Plane (T1) - Thin by up to 15%, selectively reduce over-long branches to balance crown, (max. 2m - 3m extension growth). Remove epicormic stem & basal growth. Lift canopy by 1m - 2m to uniform line.

    Decided 26 Feb 2025 Trees
  • 2023/4935/T Granted

    12 Cannon Place London NW3 1EJ

    REAR GARDEN: 1 x Ginkgo (T1) - Reduce height and lateral branches by approx. 1m - 2m.

    Decided 27 Dec 2023 Trees
  • 2023/4882/T Granted

    12 Cannon Place London NW3 1EJ

    DD 5 Day Notice REAR GARDEN: 1 x London Plane (T1) - Limb removal in accordance with submitted photo.

    Decided 12 Jan 2024 Trees
  • 2022/3539/T Granted

    12 Cannon Place London NW3 1EJ

    REAR GARDEN: 1 x London Plane (T1) - Thin by up to 15%, selectively reduce over-longs to balance crown (max. 2m - 3m extension growth), remove epicormic stem & basal growth, lift canopy by 1m - 2m to uniform line.

    Decided 24 Oct 2022 Trees
  • 2020/4199/T Granted

    12 Cannon Place London NW3 1EJ

    REAR GARDEN: 1 x London Plane (T1): Thin by up to 15%, selectively reduce over-longs to balance crown (max. 2 - 3m extension growth), remove epicormic stem & basal growth, lift canopy by 1 - 2m to uniform line.

    Decided 14 Oct 2020 Trees
  • 2017/0051/T Granted

    12 Cannon Place London NW3 1EJ

    (TPO REF 10H) REAR GARDEN: 1 x Plane - Remove epicormic growth and water shoots up to 20m

    Decided 3 Mar 2017 Trees
  • 2012/5536/P Refused

    12 Cannon Place London NW3 1EJ

    Erection of a single storey rear extension following demolition of existing conservatory to dwelling house (Class C3)

    Decided 12 Dec 2012 Full applications

Timeline

Dates from the published record

  1. 12 Dec 2012

    Decision issued: Refused

  2. 22 Jul 2026

    Added to PlanIndex

What this refusal means

Camden refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

About heritage and listed building applications

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 12 Cannon Place London NW3 1EJ

    2012/5536/P 50 yards away

    Erection of a single storey rear extension following demolition of existing conservatory to dwelling house (Class C3)

    Refused Full applications Extension Demolition
    Small domestic

  • Cannon Lodge 12 Cannon Place London NW3 1EJ

    2017/0175/T 50 yards away

    (TPO REF 10H) REAR GARDEN: 1 x Plane - Thin crown by 15%

    Granted Trees

  • 12 Cannon Place London NW3 1EJ

    2023/4935/T Submitted 20 Nov 2023 50 yards away

    REAR GARDEN: 1 x Ginkgo (T1) - Reduce height and lateral branches by approx. 1m - 2m.

    Granted Trees 3 docs

  • 12 Cannon Place London NW3 1EJ

    2022/3539/T 50 yards away

    REAR GARDEN: 1 x London Plane (T1) - Thin by up to 15%, selectively reduce over-longs to balance crown (max. 2m - 3m extension growth), remove epicormic stem & basal growth, lift canopy by 1m - 2m to uniform line.

    Granted Trees

  • 12 Cannon Place London NW3 1EJ

    2025/0322/T 50 yards away

    (TPO REF: 10H-T56) REAR GARDEN: 1 x London Plane (T1) - Thin by up to 15%, selectively reduce over-long branches to balance crown, (max. 2m - 3m extension growth). Remove epicormic stem & basal growth. Lift canopy by 1m - 2m to uniform line.

    Granted Trees

  • 12 Cannon Place London NW3 1EJ

    2017/0051/T 50 yards away

    (TPO REF 10H) REAR GARDEN: 1 x Plane - Remove epicormic growth and water shoots up to 20m

    Granted Trees

In Camden

  • 2026/1141/L Granted

    25 John Street London WC1N 2BS

    Internal and external alterations to partition layout at basement, supporting structures and external ground level, and alterations to design of conservatory, windows and doors granted under listed building consent 2024/0338/L dated 06/08/2024.

    Received 26 Mar, published by the council 24 Jul 2026 Heritage and listed buildings
  • 2025/1781/L Granted

    Frognal Rise House Lower Terrace London NW3 6RE

    Demolition of existing garage and interlinking gallery and replacement with new garage and garden room with link, new basement floor below garden, alterations to main house including replacement windows including reinstated oriel window and new French doors to entrance elevation, new roofing to side wing, new portico and replacement door to front elevation, enlargement of existing lightwell, replacement gates and canopy over entrance gate, restorations of boundary treatments, associated internal alterations including partial underpinning works and other minor alterations.

    Received 22 Apr, published by the council 22 Jul 2026 Heritage and listed buildings
  • 2026/4129/L Awaiting decision

    6 Leverton Street London NW5 2PJ

    Strip out kitchen including floor tiles and replace; replace plumbing and flooring in rear ensuite; replace plumbing in front ensuite and WC; replace internal doors; replace garden wall with metal railing; replace 3 rear windows, 3 rear elevation side windows, 1 rear door and 1 rear elevation side door with double-glazed crittal windows and doors; remove 2 rear windows; render rear elevation brickwork; and associated works.

    Received 1 Oct, published by the council 9 Oct 2026 Heritage and listed buildings
  • 2026/1686/L Granted

    Flat Ground and 1st Floor and Flat 2nd and 3rd Floor 14 Downshire Hill London NW3 1NR

    External and internal alterations in connection with conversion of two self-contained flats into a single-family dwellinghouse, including new doors at rear ground and second floor level, replacement windows at rear second and third floors level, removal of internal partitions, extending the stair handrail, and replacement internal doors, parquet flooring, skirting, architraves, cornicing, and fittings.

    Received 19 May, published by the council 24 Jul 2026 Heritage and listed buildings
  • 2026/2202/L Refused

    4 Hampstead Square London NW3 1AB

    Erection of conservatory to front elevation.

    Received 27 May, published by the council 24 Jul 2026 Heritage and listed buildings