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5 Olivers Close Potten End Berkhamsted Hertfordshire HP4 2SL

26/00322/HPAHouseholder Prior ApprovalRefused
Householder

Refused on 16 March 2026

Council decision: Prior Approval RefusedDelegated (officer decision)1 reason for refusal

Approximate site (title boundary)
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

Single-storey rear extension measuring 3.50m deep with a maximum height of 3.90m and a maximum eaves height of 2.75m

Received
13 February 2026
Decision level
Delegated (officer decision)
Ward
Ashridge
Agent
Craig Lambert Associates ltd
  1. Received13 Feb
  2. Validated13 Feb
  3. Consult.9 Mar
  4. Target
  5. Decided16 Mar

Decided in 31 days (council typically 49)

About this application

This is an outline application for a single storey rear extension at 5 Olivers Close Potten End Berkhamsted Hertfordshire HP4 2SL. Dacorum has handled 723 applications of this type. This one was decided in 31 days, 3 weeks quicker than Dacorum's typical decision time. There are no previous applications recorded at this address. In the past year there have been 58 applications across Ashridge. We hold 651 applications in total for the HP4 postcode area.

89% of outline applications at Dacorum Borough Council were approved. Across all application types, the council typically decides in about 7 weeks (median).

Based on decided applications received in the last 3 years.See what's approved near your address

Why it was refused

  1. The proposed works would fail to comply with the conditions and limitations set out under Schedule 2, Part 1, Class A of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended). A single storey side/rear extension has previously been constructed at the address. Given that the proposed single storey rear extension would adjoin this extension, there is an obligation to assess the resulting cumulative extension against the restrictions set out for side and rear extensions. The proposal would fail to comply with the restriction listed under j) ii) as the proposed extensions would have a width greater than half the width of the original dwellinghouse. As such, planning permission would be required for the proposed works. This application was supported by the following documents: (Site Location Plan) 3489-01 (Existing and Proposed Plans In One) Date of Decision Notice: 16th March 2026 Application Number: 26/00322/HPA

From the council's decision notice.

Application details

Postcode
HP4 2SL
Application type
Householder Prior Approval
Scale / size
Small
Parish
Nettleden With Potten End Parish Council

Planning application dates

Date validated
13 February 2026
Consultation expiry
9 March 2026
Neighbour consultation start
16 February 2026
Neighbour consultation end
9 March 2026
Last date for comments
9 March 2026

Applicant and agent

Agent
Craig Lambert Associates ltd
Architect profile
CRAIG LAMBERT ASSOCIATES LIMITED
Agent address
24 Sweet Briar Drive Calcot RG31 7AD

Additional information

Planning Portal ID
PP-14689872
Comments
0
Documents
5
Constraints
13

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Green belt: Dacorum
  • Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: tree preservation orders. Ask the council if these matter.

Possibly incomplete for this council: Article 4 directions.

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.

Source: Dacorum

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