28 Sibley Avenue Harpenden Hertfordshire Al5 1Hf
First floor rear extension, raising of the roof height of the existing flat-roofed side extension, and construction of a new lean-to roof over the existing single-storey rear extension
Tracking, tags and letters are part of the paid plan. See what it costs. Searching and reading any record stays free.
Progress
Application details
- Reference
- 5/2026/0559
- Local authority
- St Albans
- Postcode
- AL5 1HF
- Ward
- Harpenden South
- Application type
- Full
- Property type
- Flat
Key dates
- Submitted
- 20 Mar 2026
- Validated
- 14 Apr 2026
- Target decision
- 24 Aug 2026
28 documents · 0 comments · 0 constraints
Estimated project value
£87k–£160k
Typical UK cost for this job type, scaled for a medium scheme, at South East rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: MyJobQuote / Checkatrade 2026, ~20m² at £1,800-£3,000/m².
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 3 recent sales are listed below.
- 59 SIBLEY AVENUE, HARPENDEN, AL5 1HFDetached · £1,100,0009 months ago4 Dec 2025
- 28 SIBLEY AVENUE, HARPENDEN, AL5 1HFSemi-detached · £793,65012 months ago5 Sept 2025
- 57 SIBLEY AVENUE, HARPENDEN, AL5 1HFDetached · £1,105,00017 months ago31 Mar 2025
- 45 SIBLEY AVENUE, HARPENDEN, AL5 1HFDetached · £1,350,0002 years ago10 May 2024
- 36 SIBLEY AVENUE, HARPENDEN, AL5 1HFDetached · £1,205,0002 years ago26 Oct 2023
- 43 SIBLEY AVENUE, HARPENDEN, AL5 1HFDetached · £845,0003 years ago14 Jul 2023
- 27 SIBLEY AVENUE, HARPENDEN, AL5 1HFTerraced · £500,0003 years ago15 Jun 2023
- 44 SIBLEY AVENUE, HARPENDEN, AL5 1HFDetached · £660,0003 years ago23 Sept 2022
Homes here go for about £972,500 — the median of the last 8 market sales in AL5 1HF, £500,000 to £1,350,000.
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.
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