21A Lower Road Great Amwell Hertfordshire SG12 9SZ
Refused on 26 May 2026
Council decision: Refuse2 reasons for refusal
Boundary © HM Land Registry, © Ordnance Survey · details
This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.
Proposal
Reduction in depth of existing property, addition of first floor, erection of two-storey side extension, relocation of entrance door to front elevation, alterations to fenestration and installation of new windows to side.
- Received
- 31 March 2026
- Ward
- Great Amwell & Stansteads
- ReceivedReceived31 Mar
- ValidatedValidated31 Mar
- Consult.Consultation15 May
- TargetTarget Date26 May
- DecidedDecided26 May
Decided in 56 days (council typically 63)
About this application
This is a full planning application for a two storey side extension at 21A Lower Road Great Amwell Hertfordshire SG12 9SZ. East Hertfordshire has handled 7,264 applications of this type. This one was decided in 56 days, 7 days quicker than East Hertfordshire's typical decision time. There has been 1 other application at this address. In the past year there have been 55 applications across Great Amwell & Stansteads. We hold 1,482 applications in total for the SG12 postcode area.
80% of full applications at East Hertfordshire District Council were approved. Across all application types, the council typically decides in about 9 weeks (median).
Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street
Why it was refused
- The proposed development, taken together with the previous extensions, would cumulatively result in disproportionate additions over and above the size of the original building. Therefore, the proposal would amount to inappropriate development in the Green Belt. The proposal would also result in further harm by loss of openness. Very special circumstances have not been identified that would clearly outweigh the harm by reason of inappropriateness, and other harm. The proposal would therefore be contrary to Policy GBR1 of the East Herts District Plan (2018) and the National Planning Policy Framework.
- Due to the historic nature of the site, the proposed development would appear cramped within the site and would reduce the separation between dwellings, contrary to the character and grain of the area. In addition, the proposed development by reason of its size, scale and design would appear overly dominant and would fail to represent a subservient addition to the existing dwelling. The proposed development would fail to reflect the character and appearance of the area and the dwelling, contrary to Policies VILL2, DES4 and HOU11 of the East Herts District Plan 2018 and the National Planning Policy Framework.
From the council's decision notice.
Application details
- Postcode
- SG12 9SZ
- Application type
- Householder
- Scale / size
- Small
- Parish
- Great Amwell Parish Council
Planning application dates
- Date validated
- 31 March 2026
- Consultation expiry
- 15 May 2026
- Last date for comments
- 15 May 2026
- Target decision date
- 26 May 2026
Applicant and agent
- Applicant
- Private applicant
- Architect profile
- AT DESIGN (WELWYN) LTD
- Agent address
- 30C High Street Welwyn AL6 9EQ
Planning decision
- Case officer
- Madeleine Moore
- Statutory period
- 56 days
Publicity
- Advertisement expiry
- 15 May 2026
Site constraints
Designations that overlap or adjoin the site outline.
- Green belt: East Hertfordshire
- Flood zone 1: Low probability (rivers and sea)
Not published by this council, so not checked: Article 4 directions. Ask the council if these matter.
Possibly incomplete for this council: tree preservation orders.
Also checked, none recorded (21)
flood storage areas, conservation areas, listed buildings, 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
1 other application at this property, newest first.
Source: East Hertfordshire
Track this application
Get email alerts when there is a planning decision or status change.
Get email alerts near SG12
New planning applications delivered to your inbox daily.
Around this site
Nearby applications
- 63 Furlong Way Great Amwell Ware Hertfordshire SG12 9TE3/23/0653/HH · FullApproved0.2 mi
- 5 Blacksmiths Close Great Amwell Hertfordshire SG12 9TH3/24/0728/PNHH · OutlineWithdrawn0.2 mi
- 7 Farriers Great Amwell Hertfordshire SG12 9TL3/25/0184/HH · FullApproved0.2 mi
- Amwellbury House Walnut Tree Walk Great Amwell Hertfordshire SG12 9RD3/25/1778/HH · FullApproved0.2 mi
- Sheepcote Cottage 9 Lower Road Great Amwell Hertfordshire SG12 9SYX/26/0116/CND · ConditionsApproved0.2 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- LCR Property Services LTDElectrician0.1 mi
- D Taylor Services LtdElectrician0.2 mi
- Chelsfield Electrical Ltd t/a Chelsfield SolarElectrician0.4 mi
- Chelsfield Electrical LtdElectrician0.4 mi
Planning something similar?
See what the council approved and refused for two-storey and first-floor extensions on your street. Pick your home and get the evidence before you pay for drawings.