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21 Cornwall Road Harpenden Hertfordshire Al5 4Tq

5/2019/2715HouseholderRefused

Refused on 6 February 2020

Council decision: DC4 RefusalDelegated (officer decision)

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

Proposal

Single storey side and rear extension with rooflight following removal of existing rear structure, construction of outbuilding in rear garden, new boundary wall

Received
28 October 2019
Decision level
Delegated (officer decision)
Ward
Harpenden East
  1. Received28 Oct
  2. Validated8 Nov
  3. Consult.27 Dec
  4. Target27 Dec
  5. Decided6 Feb

Decided in 90 days (council typically 56)

About this application

This is a full planning application for a rear extension at 21 Cornwall Road Harpenden Hertfordshire Al5 4Tq. St Albans has handled 3,966 applications of this type. This one was decided in 101 days, 6 weeks longer than St Albans's typical decision time. The site is in the Harpenden conservation area. There have been 2 other applications at this address. In the past year there have been 87 applications across Harpenden East. 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 4TQ
Application type
Householder
Scale / size
Small
Parish
Harpenden Town

Planning application dates

Date validated
8 November 2019
Consultation expiry
27 December 2019
Consultation end
27 December 2019
Target decision date
27 December 2019
Application expires
2 January 2020

Planning decision

Statutory period
55 days

Publicity

Last advertised
20 November 2019

Additional information

Planning Portal ID
PP-8255015
Documents
16

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

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

  • Conservation area: Harpenden
  • Brownfield land register: The Red House Harpenden Memorial HospitalRegister site at or near this address
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)

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 and heritage coasts.

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.

Associated applications

  1. 2020
    30 Apr

    Single storey side and rear extension with rooflight following removal of existing rear structure…

    RefusedHouseholderRelated5/2020/0987
  2. 2019
    28 Oct

    Single storey side and rear extension with rooflight following removal of existing rear structure…

    This applicationRefusedFull5/2019/2715

Source: St Albans

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