Planning application
15 Chalcot Square London NW1 8YA
Works: Loft or dormer Windows or glazing 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
Replacement of the rear terrace, railings, external staircase, and internal alterations; the replacement of existing windows and doors throughout; replacement of existing rooflights to the rear roof; and an acoustic enclosure in the rear garden to house an air source heat pump (ASHP).
As published by the council, reference 25-00150-HAPP
Application record
- Reference
- 25-00150-HAPP
- Category
- Householder
- Status
- Final Decision
- Decision
- Granted
- Decided
- 2 Sep 2025
- Postcode
- NW1 8YA
Site history
Applications at this address on the Camden register
This site has had 16 applications since 2016: 10 approved, 0 refused.
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2026/2298/L Awaiting decision
15 Chalcot Square London NW1 8YA
Approval of Details for part condition 4(E) (Slates and ridge tiles) of Listed Building Consent; 2025/2386/L "Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating ", granted on 02/09/2025
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2026/2298/P Awaiting decision
15 Chalcot Square London NW1 8YA
Approval of Details (Condition 4E) of Listed Building Consent; 2025/2386/L "Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating ", granted on 02/09/2025
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2026/2111/L Awaiting decision
15 Chalcot Square London NW1 8YA
Approval of Details Pursuant to Condition 4 (Detailed Drawings and Materials) of Listed Building Consent Ref: 2025/2386/L dated 02/09/2025. "Proposal: Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating."
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2026/2111/P Awaiting decision
15 Chalcot Square London NW1 8YA
Approval of Details Pursuant to Condition 4 (Detailed Drawings and Materials) of Listed Building Consent Ref: 2025/2386/L dated 02/09/2025. "Proposal: Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating."
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2026/2034/L Granted
15 Chalcot Square London NW1 8YA
Details pursuant to Condition 4(a) (joinery) and 4(b) (terrace railings and external staircase) of Listed Building Consent 2025/2372/L, dated 29/09/2025, for the "Single storey rear extension and associated internal alterations. Enlargement of upper ground floor terrace."
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2026/2033/P Granted
15 Chalcot Square London NW1 8YA
Details pursuant to Condition 4 (Tree protection details) of planning permission 2025/2225/P granted on 25/09/2025 "Single storey rear extension at lower ground floor and enlargement of upper ground floor terrace"
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2026/2034/P Awaiting decision
15 Chalcot Square London NW1 8YA
Details pursuant to part-discharge Condition 4 of Listed Building Consent 2025/2372/L, granted 29.09.2025, for a "Single storey rear extension and associated internal alterations. Enlargement of upper ground floor terrace." Namely to discharge Condition 4 a) Details including elevations and sections at 1:10 of all new joinery including internal and external doors; and, b) Elevation and section drawings at 1:10 of the new terrace railings and external staircase.
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2026/0554/P Granted
15 Chalcot Square London NW1 8YA
Details of Condition 8 (Materials of ASHP enclosure) of planning permission 2025/2117/P, granted on 02/09/2025 for: Replacement of the rear terrace, railings, external staircase, and internal alterations; the replacement of existing windows and doors throughout; replacement of existing rooflights to the rear roof; and an acoustic enclosure in the rear garden to house an air source heat pump (ASHP).
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2025/5156/P Granted
15 Chalcot Square London NW1 8YA
Details of condition 4 (Tree Protection Plan) of planning permission 2025/2225/P dated 25/09/2025 for 'Single storey rear extension at lower ground floor and enlargement of upper ground floor terrace'
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2025/5106/P Granted
15 Chalcot Square London NW1 8YA
Details of Conditions 6 (ASHP Living Roof) and 8(a) (Materials of ASHP enclosure) of planning permission 2025/2117/P, granted on 02/09/2025 for: Replacement of the rear terrace, railings, external staircase, and internal alterations; the replacement of existing windows and doors throughout; replacement of existing rooflights to the rear roof; and an acoustic enclosure in the rear garden to house an air source heat pump (ASHP).
Timeline
Dates from the published record
-
2 Sep 2025
Decision issued: Granted
-
22 Jul 2026
Added to PlanIndex
What this grant of permission means
Camden granted permission on 2 September 2025, 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 householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
15 Chalcot Square London NW1 8YA
96% historically approved · decision due ~6 Aug
Approval of Details for part condition 4(E) (Slates and ridge tiles) of Listed Building Consent; 2025/2386/L "Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating ", granted on 02/09/2025
Awaiting decision Heritage and listed buildings Loft or dormer Windows or glazing 9 docs -
15 Chalcot Square London NW1 8YA
94% historically approved · decision due ~6 Aug
Approval of Details (Condition 4E) of Listed Building Consent; 2025/2386/L "Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating ", granted on 02/09/2025
Awaiting decision Reserved matters Loft or dormer Windows or glazing 9 docs -
15 Chalcot Square London Camden NW1 8YA
96% historically approved
Single storey rear extension and associated internal
Awaiting decision Heritage and listed buildings ExtensionSmall domestic -
15 Chalcot Square London NW1 8YA
(TPO REF C67-T5) REAR GARDEN: 1 x Lime - Reduce crown by 30%, by approximately 3m over the crown, cut back limb extending ove rear gardens so it is within the crown of the tree and remove any dead or broken limbs
Granted Trees -
15 Chalcot Square London NW1 8YA
Details of Conditions 6 (ASHP Living Roof) and 8(a) (Materials of ASHP enclosure) of planning permission 2025/2117/P, granted on 02/09/2025 for: Replacement of the rear terrace, railings, external staircase, and internal alterations; the replacement of existing windows and doors throughout; replacement of existing rooflights to the rear roof; and an acoustic enclosure in the rear garden to house an air source heat pump (ASHP).
Granted Full applications Loft or dormer Windows or glazing 6 docs -
15 Chalcot Square London NW1 8YA
Details pursuant to Condition 4(a) (joinery) and 4(b) (terrace railings and external staircase) of Listed Building Consent 2025/2372/L, dated 29/09/2025, for the "Single storey rear extension and associated internal alterations. Enlargement of upper ground floor terrace."
Granted Heritage and listed buildings Extension 7 docsSmall domestic
Other householder applications
In Camden
-
2026/3919/P Awaiting decision
7A Pilgrim's Lane London NW3 1SJ
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-
2026/2186/P Awaiting decision
85 Priory Road London NW6 3NL
Installation of air conditioning condenser unit and associated acoustic enclosure in the side passageway.
-
2026/2601/P Refused
128 St Pancras Way London NW1 9NB
Erection of rear extension.
-
2026/3952/P Awaiting decision
9 St Paul's Mews London NW1 9TZ
Existing doors to the rear elevation at first and second floor to be replaced with new French doors and windows.
-
2026/3627/P Awaiting decision
83 Highgate West Hill London N6 6LU
Erection of two rear dormers replacing the existing rear dormer, removal of the existing triangular front dormer, replacement of existing handrails with metal railings, installation of an A/C unit on rooftop, replacement of the glazed roof of the lower ground floor rear extension with a solid flat roof, and re-landscaping to front courtyard.