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Permitted14/05081/FULLTwo-storey extension

45 Montagu Square Bryanston Mews East Westminster W1H 2LN

Demolition of rear two storey extension and erection of rear three storey extension including basement excavation to provide new self-contained mews dwellinghouse at 15 Bryanston Mews East; lowering of floor level of pavement vaults through excavation to provide additional habitable accommodation in association with the use of the lower ground and ground floor of No.45 Montagu Square as 2x1 bed flats.

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Progress

Submitted
— completed
Validated
— completed
Consultation
— completed
Target date
— completed
Decided
9 Sept 2014
— completed

Application details

Reference
14/05081/FULL
Local authority
Westminster
Postcode
W1H 2LN
Ward
BRYANSTON AND DORSET SQUARE
Application type
All Other
Property type
Flat

Key dates

Decided
9 Sept 2014

Estimated project value

£75k–£175k

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: FMB / Checkatrade 2026, £2,000-£2,800/m² over a larger floor area.

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.

Homes here go for about £1,842,500 — the median of the last 8 market sales in W1H 2LN, £695,000 to £2,938,000.

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.

Nearby applications