Planning application
25 Abbey Road London NW8 9AU
Works: Extension
Relates to 26/05238/FULL
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
The construction of front and rear extensions at lower ground floor level, together with associated internal alterations, localised lowering and insulation of the basement floor, formation of new openings, repairs to the existing historic fabric, and landscaping works. (Linked with 26/05238/FULL)
As published by the council, reference 26/05239/LBC
Application record
- Reference
- 26/05239/LBC
- Category
- Heritage and listed buildings
- Status
- Pending
- Received
- 3 Aug 2026
- Validated
- 14 Aug 2026
- Postcode
- NW8 9AU
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2026.
-
26/05238/FULL Awaiting decision
25 Abbey Road London NW8 9AU
The construction of front and rear extensions at lower ground floor level, together with associated internal alterations, localised lowering and insulation of the basement floor, formation of new openings, repairs to the existing historic fabric, and landscaping works. (Linked with 26/05239/LBC)
Timeline
Dates from the published record
-
3 Aug 2026
Received by Westminster
-
14 Aug 2026
Validated
Checked as complete and ready for consideration.
-
14 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 9 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 61 days over the applications it decided in the last year.
Related applications
Cases linked to this one on the register
-
26/05238/FULL Awaiting decision
25 Abbey Road London NW8 9AU
The construction of front and rear extensions at lower ground floor level, together with associated internal alterations, localised lowering and insulation of the basement floor, formation of new openings, repairs to the existing historic fabric, and landscaping works. (Linked with 26/05239/LBC)
1 later application on the register refers to this one:
-
26/05238/FULL Awaiting decision
25 Abbey Road London NW8 9AU
The construction of front and rear extensions at lower ground floor level, together with associated internal alterations, localised lowering and insulation of the basement floor, formation of new openings, repairs to the existing historic fabric, and landscaping works. (Linked with 26/05239/LBC)
What happens while it is decided
This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided heritage and listed building applications in a median of 87 days. More in our guide to how long planning decisions take.
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 500 metres
-
25 Abbey Road London NW8 9AU
87% historically approved · decision due ~9 Oct
The construction of front and rear extensions at lower ground floor level, together with associated internal alterations, localised lowering and insulation of the basement floor, formation of new openings, repairs to the existing historic fabric, and landscaping works. (Linked with 26/05239/LBC)
Awaiting decision Full applications Extension -
First Floor And Second Floor Maisonette 25 Abbey Road London NW8 9AU
87% historically approved · decision due ~31 Dec
Amalgamation of two mezzanine flats to reinstate a single family dwelling and associated internal and external alterations. (Linked to 25/07587/LBC)
Awaiting decision Full applications New dwelling 11 docsDomestic -
First Floor And Second Floor Maisonette 25 Abbey Road London NW8 9AU
90% historically approved · decision due ~31 Dec
Amalgamation of two mezzanine flats to reinstate a single family dwelling and associated internal and external alterations. (Linked to 25/07586/FULL)
Awaiting decision Heritage and listed buildings New dwelling 8 docsDomestic -
31 Abbey Road London NW8 9AU
3 x limes (T1 to T3): crown reduce to previous, most recent reduction points, retaining shortened furnishing growth and at least 50% of fine branch structure for crown continuity.
Granted Trees 5 docs -
32B Abbey Road London NW8 9AX
Use of part of flat roof as a terrace to the first floor rear extension, with associated screening. Installation of sedum roof.
Refused Full applications Extension 16 docs -
Dudley Mansions 15-17 Abbey Road London NW8 9AR
1 x small self seed sycamore (rear, directly adjacent to boundary with 1 Abbey Gardens): removal.
Granted Trees 3 docs
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