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Permitted23/00324/FULLSubmitted 3 years agoRear extension

The Mall Westminster SW1A 1AA

Installation of condenser units and associated minor extension of existing maintenance walkway to the roof of East Wing. (Linked with 23/00325/LBC)

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Progress

Submitted
18 Jan 2023
— completed
Validated
18 Jan 2023
— completed
Consultation
23 Feb 2023
— completed
Target date
15 Mar 2023
— completed
Decided
17 Jul 2023
— completed

Application details

Reference
23/00324/FULL
Local authority
Westminster
Postcode
SW1A 1AA
Ward
SJW_22
Application type
All Other
Property type
House

Key dates

Submitted
18 Jan 2023
Validated
18 Jan 2023
Comments close
23 Feb 2023
Target decision
15 Mar 2023
Decided
17 Jul 2023

Estimated project value

£41k–£75k

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: MyJobQuote / Checkatrade 2026, ~20m² at £1,800-£3,000/m².

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 8 recent sales are listed below.

Homes here go for about £1,950,000 — the median of the last 6 market sales in SW1A (the wider postcode district), £1,400,000 to £5,150,000.

Contains HM Land Registry data © Crown copyright and database right 2025. 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.

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