18 Greystoke Avenue Harrow HA5 5SL
Single and two storey side extension; Rear dormer with juliette balcony; Single storey rear extension; External alterations (Retrospective)
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Progress
Application details
- Reference
- P/1232/21
- Local authority
- Harrow
- Postcode
- HA5 5SL
- Ward
- HEADSTONE NORTH
- Application type
- Householder
- Property type
- House
Key dates
- Submitted
- 23 Mar 2021
- Validated
- 23 Mar 2021
- Comments close
- 20 May 2021
- Target decision
- 18 May 2021
- Decided
- 18 May 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.
- 12 GREYSTOKE AVENUE, PINNER, HA5 5SLDetached · £720,00012 months ago15 Aug 2025
- 40 GREYSTOKE AVENUE, PINNER, HA5 5SLSemi-detached · £1,010,0002 years ago2 Aug 2024
- 70 GREYSTOKE AVENUE, PINNER, HA5 5SLSemi-detached · £987,5002 years ago1 Feb 2024
- 4 GREYSTOKE AVENUE, PINNER, HA5 5SLDetached · Not a standard market sale · £755,0003 years ago13 Jul 2023
- 42 GREYSTOKE AVENUE, PINNER, HA5 5SLSemi-detached · £935,0005 years ago12 Aug 2021
- 62 GREYSTOKE AVENUE, PINNER, HA5 5SLSemi-detached · £825,0005 years ago21 Apr 2021
- 60 GREYSTOKE AVENUE, PINNER, HA5 5SLSemi-detached · £850,0005 years ago5 Mar 2021
- 18 GREYSTOKE AVENUE, PINNER, HA5 5SLSemi-detached · £645,0006 years ago14 Aug 2020
Homes here go for about £850,000 — the median of the last 7 market sales in HA5 5SL, £645,000 to £1,010,000.
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
- 18 Harrow HA5 5SLPendingNext door
- Greystoke Avenue Harrow HA5 5SLWithdrawnNext door
- 12 GREYSTOKE AVENUE Harrow HA5 5SLPendingAdjoining
- 12 GREYSTOKE AVENUE Harrow HA5 5SLRefusedAdjoining
- 10 Greystoke Avenue Harrow HA5 5SLPermitted46 yd
- Greystoke Avenue Harrow HA5 5SNRefused51 yd