25 Depot Road Horsham West Sussex RH13 5HE

DC/26/0296HouseholderRefused

Refused on 16 April 2026

Council decision: Application RefusedDelegated (officer decision)2 reasons 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

Erection of a first floor rear extension over existing ground floor, conversion of loft into habitable living space with the installation of a rear dormer and 2no. rooflights to the front elevation, and installation of new roof to existing porch.

Received: 19 February 2026
Decision level: Delegated (officer decision)
Council: Horsham District Council
Ward: Forest
Agent: Marlon Haus Ltd

ReceivedReceived19 Feb
ValidatedValidated19 Feb
Consult.Consultation26 Mar
TargetTarget Date16 Apr
DecidedDecided16 Apr

Decided in 56 days (council typically 56)

About this application

This is a full planning application for a dormer extension at 25 Depot Road Horsham West Sussex RH13 5HE. Horsham has handled 2,753 applications of this type. This one was decided in 56 days. There have been 2 other applications at this address. In the past year there have been 69 applications across Forest. We hold 2,379 applications in total for the RH13 postcode area.

90% of full applications at Horsham 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.See what's approved near your address

Why it was refused

The rear extensions by reason of their scale, form and design would represent discordant, unduly dominant and incongruous additions which would be inappropriate to the character and appearance of the host building, and which would harm the character or appearance of the wider area. The visual impact of the proposal is not acceptable and would be contrary to Policies 32 and 33 of the Horsham District Planning Framework (2015) and Policies HB3 and HB4 of the Horsham Blueprint Business Neighbourhood Plan.
The first-floor rear extension by, reason of its height and siting in relation to the shared eastern boundary, would appear overbearing and result in a loss of outlook and an increased sense of enclosure for the neighbouring property, to the detriment of their amenity. The extent of this impact would be contrary to Policy 33 of the Horsham District Planning Framework (2015). Schedule of plans/documents: Plan Type Description Drawing Number Received Date Elevation plan EXISTING NONE 06.03.2026 Floor plan EXISTING AND ROOF PLANS NONE 06.03.2026 Location plan NONE 06.03.2026 Photos PHOTO REPORT NONE 06.03.2026 Elevation plan PROPOSED NONE 06.03.2026 Horsham District Council, Albery House, Springfield Road, Horsham, West Sussex RH12 2GB Location & Block plan NONE 06.03.2026 Floor plan PROPOSED AND ROOF PLANS NONE 06.03.2026

From the council's decision notice.

Application details

Postcode: RH13 5HE
Application type: Householder
Scale / size: Small
Parish: Forest NC

Planning application dates

Date validated: 19 February 2026
Consultation expiry: 26 March 2026
Neighbour consultation end: 26 March 2026
Last date for comments: 26 March 2026
Target decision date: 16 April 2026

Applicant and agent

Agent: Marlon Haus Ltd
Architect profile: MARLON HAUS LTD
Agent address: 25 Depot Road Horsham West Sussex RH13 5HE

Planning decision

Statutory period: 56 days

Appeal

Appeal status: Awaiting decision

Appeal history

6008268

Dismissed

Type: Householder (HAS)Procedure: Written RepresentationsDecision: 13 August 2026Dev Type: Householder developmentsReason: refused

Additional information

Planning Portal ID: PP-14717214
Documents: 22
Constraints: 16

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

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.

Planning history at this site

2 other applications at this property, newest first.

Source: Horsham

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