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22 Ambrose Lane Harpenden Hertfordshire AL5 4AX

5/2026/0145FullDecided

Decided on 10 April 2026

Delegated (officer decision)4 conditions

Approximate location: the centre of the postcode, not the exact property.

Proposal

Proposed two storey rear extension, new front bay window, and removal of one chimney at 22 Ambrose Lane Harpenden Hertfordshire AL5 4AX

Received
6 February 2026
Decision level
Delegated (officer decision)
Ward
Harpenden West
  1. Received6 Feb
  2. Validated
  3. Consult.
  4. Target
  5. Decided10 Apr

Decided in 63 days (council typically 56)

About this application

This is a full planning application for a two storey rear extension at 22 Ambrose Lane Harpenden Hertfordshire AL5 4AX. St Albans has handled 3,966 applications of this type. There are no previous applications recorded at this address. In the past year there have been 194 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 4AX
Application type
Full
Scale / size
Small

Planning application dates

Validated
6 February 2026
Consultation expiry
7 March 2026

Applicant and agent

Applicant
Private applicant
Agent
Clarke & Whalen
Architect profile
CLARKE & WHALEN ARCHITECTS LIMITED

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations at the address point. Ones next to the site may also apply.

  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (24)

flood storage areas, conservation 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.

Source: St Albans

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