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Permitted18/06410/FULLLoft conversion

350 Kilburn Lane Westminster W9 3EF

Erection of mansard roof extension and rear extensions at ground, first and second floors in connection with increase in size of shop unit at ground floor level and use of upper floors as 3 self-contained flats (Class C3)(1xstudio, 1x1bedroom, 1x2bedroom)

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Progress

Submitted
—
— completed
Validated
—
— completed
Consultation
—
— completed
Target date
—
— completed
Decided
21 Sept 2018
— completed

Application details

Reference
18/06410/FULL
Local authority
Westminster
Postcode
W9 3EF
Ward
QUEEN'S PARK
Application type
All Other
Property type
Flat

Key dates

Decided
21 Sept 2018

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

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 6 recent sales are listed below.

Homes here go for about £560,000 — the median of the last 8 market sales in W9 3EF, £447,500 to £600,000.

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