57 Great North Road Brookmans Park AL9 6LA Data via plota.co.uk
Proposal
Erection of part double part single storey rear extension, single storey front porch extension, raising of roof and eaves to accommodate loft conversion, alterations to materials and fenestration, erection of front boundary wall and gates Data via plota.co.uk
Application progress
Approved on 3 Sept 2026 · Delegated · Last checked 7 Sept 2026
Documents 35
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 23
Consultation & comments 2
Other documents 7
Site constraints 4
Checked on 6 October 2026. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Sales history 1
Last sold for £1,150,000 in November 2020. Other property, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in July 2019, the latest held for this property. The building may have changed since. View the certificate
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Important details
- Council
- Welwyn Hatfield
- Application type
- HOUSEHOLDER APPLICATION
- Postcode
- AL9 6LA
- Received
- 20 Apr 2026
- Validated
- 5 May 2026
- Parish
- North Mymms
- Case officer
- Show
- Decision
- Granted
- Decision date
- 3 Sept 2026
- Decision level
- Delegated
- Applicant
- Show
- Agent
- Show
How this decision compares
Decided in 121 days from validation, 65 days slower than Welwyn Hatfield's median of 56 for extensions. Approved, as 88% of extensions here are.
Plota live figures for extensions decided by Welwyn Hatfield in the last twelve months, from validation. Welwyn Hatfield decision record →
Public comments
8 neighbours consulted · Last counted 7 Sept 2026
Consultation & key dates
- Comments by
- 2 Sept 2026
Historical activity at this location
29 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Welwyn Hatfield is slower than most councils at deciding householder applications, ranking #224 out of 296. 50% of applications have the time limit extended, above the 41% national average. Householder applications are slightly less likely to be approved here (86%) than the national average (90%).
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
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57 Great North Road Brookmans Park AL9 6LA
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