Planning application
2010/1706/L
13A Downshire Hill London NW3 1NR
Proposal
Erection of a single storey side extension at second floor level and external alterations including installation of three sash windows at ground floor level plus associated internal works including a new opening to the proposed extension, removal of a partition, replacing the existing utility by a cloakroom, and works to the basement level to form a utility room to dwelling house (Class C3).
As published by the council, reference 2010/1706/L
Timeline
Dates from the published record
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18 Jun 2010
Decision issued: Refused
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22 Jul 2026
Added to PlanIndex
What happens at appeal
The process from here
This application is at appeal, which passes the decision from the council to the national planning inspectorate, or in Scotland usually to a local review body first. The appeal considers the scheme afresh against the same policies.
Anyone who commented on the original application is normally notified and can comment again within the appeal deadline. Appeal decisions take months rather than weeks, and the outcome replaces the council's decision.
About heritage and listed buildings applications
How this application type works
Heritage applications concern listed buildings and conservation areas. Listed building consent is needed for works, inside or out, that affect the special interest of a listed building, and carrying out such works without consent is a criminal offence. The council weighs harm to the heritage asset against any public benefit of the proposal.
More on heritage and listed buildings applications in our guide
Nearby applications
Within 500 metres
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2010/3533/P Granted
13A Downshire Hill London NW3 1NR
Replacement of existing casement windows with sash windows and existing French doors with sash window to rear extension of dwelling house (Class C3).
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2026/2144/T Granted
13A Downshire Hill London NW3 1NR
REAR GARDEN: 1 x Yew (T1) - Thin crown density throughout by approx. 25% removing congested epicormic growth from central crown area and thinning evenly out to order crown structure. Reduce crown height back to previous and most recent points of reduction (up to approx. 1m). Reduce lateral and sub lateral growth by up to approx. 1.2m to shape. Raise low crown skirt by approx. 80cm. 1 x Mimosa (T2) - Section fell to ground level. 1 x Pear (T3) - Section fell to ground level. 1 x Cypress (T4) - Section fell to ground level. 1 x Birch (T5) - Thin crown density evenly throughout by 20%. Reduce crown by approx. 1.2m all round. 1 x Flowering Cherry (T6) - Tip prune to reduce by approx. 1.2m. Thin crown density by approx. 20%. 1 x Birch (T7) - Reduce crown back to previous and most recent reduction point, up to approx. 1.2m - 1.5m. Thin crown density evenly throughout by approx. 20%.
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2010/6330/L Granted
13A Downshire Hill London NW3 1NR
Alterations to existing basement inc. lowering of existing floor level, creation of 2 new steps, underpinning and waterproofing to dwelling (Class C3).
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2023/4963/T Granted
13A Downshire Hill London NW3 1NR
REAR GARDEN: 1 x Yew (T1) - Reduce height from 6m by 1.5m to 4.5m, trim all sides and edges to a neat dome.
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2010/1704/P Refused
13A Downshire Hill London NW3 1NR
Erection of a single storey side extension at second floor level and external alterations including installation of three sash windows at rear ground floor level (Class C3).
-
2016/3261/T Granted
13A Downshire Hill London NW3 1NR
REAR GARDEN: 1 x Yew Tree (T1) - reduce approx 2.5m from height and 1-2m from all side growths 1 x Birch (T2) - reduce back to previous points, reduce approx 1.5-2m off the height and reduce sides by 1m to shape 1 x Birch (T3) - reduce back to previous points, reduce approx 2m off the height and reduce sides by 1m to shape 1 x Prunus Amanagowa (T4) - remove deadwood
Other heritage and listed buildings applications
In Camden
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2026/3248/L Awaiting decision
15 Eton Villas London NW3 4SG
Single storey rear extension, internal reconfigurations, installation of double-glazed windows and doors, new air-conditioning units, landscaping to rear garden and erection of outbuilding amongst other alterations to the property.
-
2026/3213/L Awaiting decision
51, 53, 55, 57 Lamb's Conduit Street London Camden WC1N 3NB
Installation of gas infrastructure including an external gas riser, associated pipework, and internal alterations comprising the relocation of gas meters and associated connections
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2026/2318/L Granted
90 Frognal London NW3 6XB
Structural strengthening of underground vault and underpinning of northern side of ground-floor boot room.
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2026/2136/L Granted
45 Downshire Hill London NW3 1NU
Proposed repair and replacement of front elevation windows with matching single glazed timber sash units. Replacement modern French doors in slim-profile double glazing. Rear windows retained, and repaired as required.
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2026/2122/L Granted
6 Royal College Street London NW1 0TH
Various internal and external changes, including replacement and alteration to timber windows, adjustments to internal layout, installation of fire-rated doors and emergency lighting, relocation and rearrangement of bathroom and kitchen (retrospective).