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Permitted20/04091/FULLSubmitted 6 years agoLoft conversion

1A Cavendish Avenue Westminster NW8 9JE

Variation of condition 1 of planning permission dated 10 March 2020 (RN: 19/07210/FULL) for the: Erection of rear dormer roof extension. Internal alterations to the lower ground floor, upper ground floor, and second floor together with the retention and restoration of the original historic features. Replacement of external rear staircase and secondary glazing to existing windows. Proposed landscaping to garden. NAMELY, to amend the approved drawing numbers to allow changes to the layout, rear stairs and associated works. Alterations to fenestration on rear elevation. (Linked to 20/04094/LBC)

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Progress

Submitted
1 Jul 2020
— completed
Validated
1 Jul 2020
— completed
Consultation
25 Aug 2020
— completed
Target date
26 Aug 2020
— completed
Decided
2 Sept 2020
— completed

Application details

Reference
20/04091/FULL
Local authority
Westminster
Postcode
NW8 9JE
Ward
RPC_02
Application type
All Other
Property type
House

Key dates

Submitted
1 Jul 2020
Validated
1 Jul 2020
Comments close
25 Aug 2020
Target decision
26 Aug 2020
Decided
2 Sept 2020

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

New owners, recently moved in. First work on a house usually follows within months of completing.

Homes here go for about £6,925,000 — the median of the last 6 market sales in NW8 9JE, £5,850,000 to £9,850,000.

Contains HM Land Registry data © Crown copyright and database right 2026. 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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