9 Mardley Hill Welwyn AL6 0UE
Erection of single storey front, side and rear extension, raising the existing roof and formation of rear dormer. Alterations to the fenestration, including, installation of new windows and doors and external rendering and cladding, following the demolition of garage and porch
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Progress
Application details
- Reference
- 6/2026/1198/HOUSE
- Local authority
- Welwyn Hatfield
- Postcode
- AL6 0UE
- Ward
- Welwyn East
- Application type
- Full
- Property type
- House
Key dates
- Submitted
- 10 Jul 2026
- Validated
- 10 Jul 2026
- Decided
- 11 Sept 2026
Estimated project value
£32k–£87k
Typical UK cost for this job type, at South East 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.
- 9 MARDLEY HILL, WELWYN, AL6 0UEDetached · £600,0005 months ago23 Mar 2026
- 15 MARDLEY HILL, WELWYN, AL6 0UEDetached · £456,0005 years ago9 Oct 2020
- 17 MARDLEY HILL, WELWYN, AL6 0UEDetached · £600,00010 years ago18 Apr 2016
- 15 MARDLEY HILL, WELWYN, AL6 0UEDetached · £480,00012 years ago30 Apr 2014
- 19 MARDLEY HILL, WELWYN, AL6 0UEDetached · £490,00013 years ago14 Jun 2013
- 9 MARDLEY HILL, WELWYN, AL6 0UEDetached · £425,00015 years ago6 May 2011
- 3 MARDLEY HILL, WELWYN, AL6 0UEDetached · £249,00024 years ago21 Sept 2001
- 9 MARDLEY HILL, WELWYN, AL6 0UEDetached · £134,00029 years ago31 Jan 1997
Homes here go for about £468,000 — the median of the last 8 market sales in AL6 0UE, £134,000 to £600,000.
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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