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PermittedP/4426/21Submitted 4 years agoLoft conversion

6 Borrowdale Avenue Harrow HA3 7PZ

CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form end gable; rear dormer; three rooflights in front roofslope; window in end gable

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Progress

Submitted
3 Nov 2021
— completed
Validated
3 Nov 2021
— completed
Consultation
3 Nov 2021
— completed
Target date
29 Dec 2021
— completed
Decided
29 Dec 2021
— completed

Application details

Reference
P/4426/21
Local authority
Harrow
Postcode
HA3 7PZ
Ward
MARLBOROUGH
Application type
All Other
Property type
House

Key dates

Submitted
3 Nov 2021
Validated
3 Nov 2021
Comments close
3 Nov 2021
Target decision
29 Dec 2021
Decided
29 Dec 2021

Estimated project value

£53k–£110k

Based on the 35.0m² of floor area stated in the application, at outer London rates (2026). Source: Checkatrade 2026, loft conversion £1,200-£2,500/m².

Floor area gained: 35m² · 1 additional bedrooms

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 5 recent sales are listed below.

Homes here go for about £550,000 — the median of the last 7 market sales in HA3 7PZ, £497,000 to £1,000,000.

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