27 Highfield Road Sandridge Hertfordshire AL4 9BX
Refused on 17 August 2026
Council decision: Certificate of Lawfulness Refused1 reason for refusal
Proposal
Certificate of Lawfulness (Proposed) - The proposed 3m two storey rear extension and internal alterations at 27 Highfield Road Sandridge Hertfordshire AL4 9BX
- Received
- 15 June 2026
- Ward
- Sandridge & Wheathampstead
- Agent
- Divine Design
- ReceivedReceived15 Jun
- ValidatedValidated16 Jun
- Consult.Consultation24 Jul
- TargetTarget Date24 Jul
- DecidedDecided17 Aug
Decided in 62 days
About this application
This is a planning application for a two storey rear extension at 27 Highfield Road Sandridge Hertfordshire AL4 9BX. St Albans has handled 12,340 applications of this type. This one was decided in 62 days, 6 days longer than St Albans's typical decision time. There have been 5 other applications at this address. In the past year there have been 108 applications across Sandridge & Wheathampstead. We hold 2,081 applications in total for the AL4 postcode area.
Why it was refused
- A Certificate of Lawfulness (proposed) cannot be issued on the basis that the proposal does not constitutes permitted development by virtue of the provisions of Class B.1, d, ii Part 1, D.1, b, B (i) (bb) and B (i) (bb) (ii) Part 1, Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended. The plans indicate that the enlargement to the roof would exceed 50m3 permitted for detached houses. Furthermore, when measuring the projected area of the porch it exceeds 3m2. Additionally, the enlargement extends beyond the eaves of the house and does not leave the minimum of 0.2m. Finally, the enlarged roof extends beyond the outside face of the original dwellinghouse's rear external wall. Formal planning permission is therefore required. Christine Traill Strategic Director – Community and Place Delivery Dated 17/08/2026 First Schedule (Development/Use) - Certificate of Lawfulness (Proposed) - The proposed 3m two storey rear extension and internal alterations Second Schedule (Location) - 27 Highfield Road Sandridge Hertfordshire
From the council's decision notice.
Application details
- Postcode
- AL4 9BX
- Parish
- Sandridge
Planning application dates
- Date validated
- 16 June 2026
- Consultation end
- 24 July 2026
- Target decision date
- 24 July 2026
Applicant and agent
- Applicant
- Private applicant
- Agent
- Divine Design
Site constraints
Designations at the address point. Ones next to the site may also apply.
- Green belt: St Albans
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (23)
flood storage areas, conservation areas, listed buildings, Article 4 directions, tree preservation orders, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.
A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.
Data © Crown copyright and others · sources and licences
Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.
© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.
© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.
© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.
Contains Ordnance Survey data © Crown copyright and database right 2026.
Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.
Planning history at this site
5 other applications at this property, newest first.
- 20263 Nov
Prior Approval - Enlargement of a dwelling house by construction of one additional storey to a maximum height…
PendingApplication26/1909/PAO - 202611 Aug
Certificate of Lawfulness (proposed) - The proposed additional storey over the original footprint at 27…
RefusedApplication5/2026/1507 - 202529 Dec
Proposed roof and loft extensions with ground floor extensions and alterations including amendment to drive…
RefusedFull5/2025/2361 - No date
Proposed new roof and loft extensions with ground floor extensions, alterations including amendment to in out…
RefusedApplication5/2025/1414 - No date
Certificate of Lawfulness (proposed) - The proposed garage conversions, single storey side extension, and…
ApprovedApplication5/2026/1006
Source: St Albans
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For applicants and trades
Contractors near this project
Find contractors for extensions near this site- St Albans Tree & Garden Services Ltd0.7 mi
- Premier ContractsWindow & Door Installer0.7 mi
- Morgan Chimney Sweeps LtdSolid Fuel Heating0.7 mi
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