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3 Ashcroft Close Harpenden Hertfordshire AL5 1JJ

5/2026/1631Awaiting decision
Approximate location: the centre of the postcode, not the exact property.

Proposal

Single storey side and rear extensions, loft conversion incorporating a raised roof, rooflights and solar panels, replacement windows, alterations to external openings, roof and fenestration, and alterations to external materials at 3 Ashcroft Close Harpenden Hertfordshire AL5 1JJ

Received
25 September 2026
Ward
Harpenden South
Agent
RTM Design
  1. Received25 Sep
  2. Validated
  3. Consult.
  4. Target
  5. Decided

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About this application

This is a planning application for a loft conversion at 3 Ashcroft Close Harpenden Hertfordshire AL5 1JJ. St Albans has handled 12,340 applications of this type. It has been with the council since 25 September 2026 and is still awaiting a decision. There are no previous applications recorded at this address. In the past year there have been 117 applications across Harpenden South. We hold 3,774 applications in total for the AL5 postcode area.

Application details

Postcode
AL5 1JJ

Planning application dates

Validated
25 September 2026

Applicant and agent

Applicant
Private applicant
Agent
RTM Design

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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