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Serif House 10 Dudley Street Luton LU2 0NT

25/01306/FULFull ApplicationRefused
Full

Refused on 27 February 2026

Council decision: Application RefusedDelegated (officer decision)5 reasons for refusal

Site boundary (council red line)

Proposal

Raising the roof and erection of a first floor side extension to include six dormers (three front, two rear and a rear/side) to facilitate a conversion and change of use of office building to four flats (2 x two bed and 2 x three bed) and alterations to fenestration.

Received
1 December 2025
Decision level
Delegated (officer decision)
Public comments
3
Ward
HIGH TOWN
  1. Received1 Dec
  2. Validated19 Jan
  3. Consult.3 Mar
  4. Target16 Mar
  5. Decided27 Feb

Decided in 39 days (council typically 56)

About this application

This is a full planning application for a side extension at Serif House 10 Dudley Street Luton LU2 0NT. Luton has handled 619 applications of this type. This one was decided in 88 days, 5 weeks longer than Luton's typical decision time. There are no previous applications recorded at this address. In the past year there have been 51 applications across HIGH TOWN. We hold 965 applications in total for the LU2 postcode area.

80% of full applications at Luton Borough 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

Why it was refused

  1. The proposed roof extensions and alterations, because of their height, scale, width, proportion and inclusion of flat roof and steep front/rear faces, would dominate the upper floor and result in a loss of the original ridged gable roof forms. This would be harmful to the character of the host property and alien within the wider High Town Area streetscene which the site contributes to in vistas from surrounding streets and 27th February 2026 See Notes for Applicants Attached. TOWN AND COUNTRY PLANNING ACT 1990 TOWN AND COUNTRY PLANNING (GENERAL DEVELOPMENT PROCEDURE) ORDER 2015 Continuation (Forming part of Application No: 25/01306/FUL harmful to the setting of the nearby High Town Conservation Area. The proposal would also retain the anachronous ground floor fenestration and fail to improve the appearance of the building relative to the adjacent Conservation Area. The proposal would therefore be contrary to the aims of policies LLP10, LLP19, LLP25 and LLP30 of the Luton Local Plan 2011-2031.
  2. The proposed subdivision, extensions and change of use would: give rise to a layout that fails to deliver sufficient internal living space in 3 of the 4 units, with all units served by deficient access, poor internal layout and inter-floor stacking; fail to resolve ground floor privacy concerns; supply only deficient waste storage provision in an unserviceable location; and omit sufficient cycle parking and amenity space for all residents. These deficiencies in habitability and serviceability would therefore be contrary to the aims of policies LLP15, LLP25, LLP31(B,iv) and LLP37 of the Luton Local Plan 2011-2031 and the (Technical Housing Standards) Nationally Described Space Standard 2015.
  3. The proposal, because it seeks to deliver 4 flats with poorly thought out interiors and an excessive number of bedrooms that require more internal space than the proposed layouts deliver, would comprise an unwelcome overdevelopment of this small, constrained site. Together with the unsympathetic extensions the resulting accommodation would be substandard in size, having poor habitability for residents. The inability of the proposed units to satisfactorily accommodate the proposed number of residents nor to provide sufficient waste servicing, access, amenity and cycle parking arrangements, would give rise to an undesirable intensification of use and domestic activity within the building which the quantum of internal space proposed cannot accommodate. The resulting operation of the flats would have an overwhelming and negative impact on the existing amenity of adjacent neighbouring dwellings. The proposal would therefore be contrary to the aims of policies LLP15, LLP25, and LLP31 of the Luton Local Plan 2011-2031
  4. Biodiversity Net Gain (BNG) is a mandatory requirement of Schedule 7A of the Town and Country Planning Act 1990 (as inserted by Schedule 14 of the Environment Act 2021) (Schedule 7A). This application has not demonstrated exemption and is subject to the mandatory BNG condition, which requires developers to deliver a BNG of at least 10%. No details have been provided indicating how the off-site gains will be purchased, delivered and monitored, or an appropriate legal agreement provided to ensure this is the case. Consequently, in respect of biodiversity, the development would not comply with Schedule 7A of the Town and Country Planning Act 1990.
  5. The application drawings, because they contain erroneous floorspace calculations; no section through the dwellingspace; discrepancies between the scale embedded in the PDF file and noted scale, and only partial annotated dimensions mean that accurate measurements between existing and proposed drawings cannot be made. 27th February 2026 C Inwards TOWN AND COUNTRY PLANNING ACT 1990 TOWN AND COUNTRY PLANNING (GENERAL DEVELOPMENT PROCEDURE) ORDER 2015 Continuation (Forming part of Application No: 25/01306/FUL Despite requests to remedy the issue at validation stage, the deficiency persists and leaves the Local Planning Authority unable to ascertain the exact parameters of what is being proposed either as extension or within the conversions, or the impacts. If approved the drawings would permit a series of works which if built would leave builders unable to decipher and the LPA unable to enforce against any deviation from the plans - to the potential detriment of neighbouring and future resident amenity.

From the council's decision notice.

Application details

Postcode
LU2 0NT
Application type
Full Application
Scale / size
Small

Planning application dates

Date validated
19 January 2026
Consultation expiry
3 March 2026
Consultation start
17 February 2026
Consultation end
3 March 2026
Neighbour consultation start
26 January 2026
Neighbour consultation end
19 February 2026
Last date for comments
3 March 2026
Target decision date
16 March 2026

Applicant and agent

Applicant
Private applicant
Agent address
AP Consulting Engineers 3 Amherst Rise Maulden Bedford MK45 2RF

Planning decision

Case officer
Franc Genley
Statutory period
56 days

Publicity

Site notice start
4 February 2026

Appeal history

6009487
Dismissed
Type: Planning AppealProcedure: Written RepresentationsDecision: 25 September 2026Dev Type: Minor DwellingsReason: refused
6004056
Dismissed
Type: Planning AppealProcedure: Written RepresentationsDecision: 17 April 2026Dev Type: Change of useReason: refused

Additional information

Documents
9
Constraints
4

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)

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

Also checked, none recorded (23)

flood storage areas, conservation areas, listed buildings, Article 4 directions, 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: Luton

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