19 Clarence Road Harpenden Hertfordshire AL5 4AJ
Approved on 18 July 2025
Council decision: DC3 Conditional PermissionDelegated (officer decision)3 conditions
Proposal
Construction of two storey side extension comprising accommodation in roof with front dormer windows, rear dormer window and side carport at 19 Clarence Road Harpenden Hertfordshire AL5 4AJ
- Received
- 7 April 2025
- Decision level
- Delegated (officer decision)
- Ward
- Harpenden West
- ReceivedReceived7 Apr
- ValidatedValidated8 Apr
- Consult.Consultation14 Jun
- TargetTarget Date14 Jun
- DecidedDecided18 Jul
Decided in 101 days (council typically 56)
About this application
This is a full planning application for a two storey side extension at 19 Clarence Road Harpenden Hertfordshire AL5 4AJ. St Albans has handled 3,966 applications of this type. This one was decided in 102 days, 7 weeks longer than St Albans's typical decision time. The site is in the Harpenden conservation area, with 1 listed building nearby. There has been 1 other application at this address. In the past year there have been 197 applications across Harpenden West. We hold 3,774 applications in total for the AL5 postcode area.
86% of full applications at St Albans City and District Council were approved. Across all application types, the council typically decides in about 8 weeks (median).
Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street
Application details
- Postcode
- AL5 4AJ
- Application type
- Householder
- Scale / size
- Medium
- Parish
- Harpenden Town
Planning application dates
- Date validated
- 8 April 2025
- Consultation expiry
- 14 June 2025
- Consultation end
- 14 June 2025
- Target decision date
- 14 June 2025
- Application expires
- 2 June 2025
Applicant and agent
- Applicant
- Private applicant
- Architect profile
- STUDIO THOMAS LIMITED
Planning decision
- Statutory period
- 67 days
Publicity
- Last advertised
- 22 May 2025
Additional information
- Planning Portal ID
- PP-13924878
- Documents
- 19
Site constraints
Designations at the address point. Ones next to the site may also apply.
- Conservation area: Harpenden
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (23)
flood storage areas, listed buildings, Article 4 directions, tree preservation orders, green belt, 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
3 other applications at this property, newest first.
- 202419 Dec
Construction of two storey side extension comprising with accommodation in roof with, front rooflight, rear…
RefusedHouseholder5/2024/2251 - 20238 Dec
G1 Group of Hornbeam - Reduction by 2m approx (excluding Lime). T2 Lime - Crown lift over pergola area to…
PendingTree works in conservation areaTP/2023/0650 - 201912 Aug
Single storey rear extension with rooflights following demolition of conservatory, insertion of dormer window…
DC3 Conditional PermissionHouseholder5/2019/2082
Source: St Albans
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Around this site
Nearby applications
- 6 Clarence Road Harpenden Hertfordshire Al5 4AjTP/2024/0534 · TreesApproved0.0 mi
- 7 Clarence Road Harpenden Hertfordshire Al5 4AjTP/2024/0493 · TreesApproved0.0 mi
- 5 Clarence Road Harpenden Hertfordshire Al5 4AjTP/2025/0121 · TreesApproved0.0 mi
- 17 Clarence Road Harpenden Hertfordshire Al5 4AjTP/2024/0653 · TreesApproved0.0 mi
- 19 Clarence Road Harpenden Al5 4AjTP/2019/0518 · TreesApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Wrens Electrical LtdElectrician0.5 mi
- Goldhawk Lofts LimitedHarpendenLoft ConversionsLoft Bedrooms0.6 mi
- Impala Property Ventures LTDElectrician0.7 mi
- A40 Electrical LtdElectrician0.8 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.