3 Northumberland Place Westminster W2 5BS
Confirmation that the planning permission dated 19 June 2025 (RN: 25/01772/FULL) for the: Erection of a mansard roof extension to a five storey terraced house and installation of solar panels at roof, Namely confirmation that the proposed installation of one air source heat pump on the flat roof of the rear outrigger is permitted development under Class G, Part 14, Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) (the GPDO), and would therefore be lawful if carried out.
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Progress
Application details
- Reference
- 26/06481/CLOPUD
- Local authority
- Westminster
- Postcode
- W2 5BS
- Ward
- BWW_22
- Application type
- All Other
- Property type
- Flat
Key dates
- Submitted
- 25 Sept 2026
- Validated
- 25 Sept 2026
- Target decision
- 20 Nov 2026
Estimated project value
£37k–£100k
Typical UK cost for this job type, at inner London rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: Checkatrade 2026 loft conversion cost guide.
Recently sold nearby
Nothing on this postcode has changed hands in the last two years. The sales below are for pricing rather than a lead.
- 3 NORTHUMBERLAND PLACE, LONDON, W2 5BSTerraced · £5,400,0002 years ago15 Dec 2023
- 24 NORTHUMBERLAND PLACE, LONDON, W2 5BSTerraced · £3,925,0002 years ago28 Nov 2023
- 19 NORTHUMBERLAND PLACE, LONDON, W2 5BSTerraced · £2,935,0005 years ago4 Jun 2021
- 21 NORTHUMBERLAND PLACE, LONDON, W2 5BSTerraced · £4,250,0005 years ago30 Apr 2021
- 23 NORTHUMBERLAND PLACE, LONDON, W2 5BSTerraced · £3,700,0005 years ago29 Jan 2021
- 14 NORTHUMBERLAND PLACE, LONDON, W2 5BSTerraced · £3,900,0005 years ago21 Dec 2020
- 28 NORTHUMBERLAND PLACE, LONDON, W2 5BSTerraced · £3,565,0006 years ago20 Mar 2020
- 21 NORTHUMBERLAND PLACE, LONDON, W2 5BSTerraced · £3,700,0006 years ago4 Feb 2020
Homes here go for about £3,800,000 — the median of the last 8 market sales in W2 5BS, £2,935,000 to £5,400,000.
Contains HM Land Registry data © Crown copyright and database right 2023. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.
Planning constraints
No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.
Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.
Nearby applications
- 3 Northumberland Place Westminster W2 5BSPermittedNext door
- 3 Northumberland Place Westminster W2 5BSPermittedNext door
- 3 Northumberland Place Westminster W2 5BSPermittedNext door
- 3 Northumberland Place Westminster W2 5BSPermittedNext door
- Northumberland Place City Of Westminster W2 5BSPendingNext door
- 3 Northumberland Place Westminster W2 5BSPermittedNext door