Ground-floor rear extension at Colebrook Cottage, Winchester

Summary of planning committee decision

Decided by Winchester Planning Committee on 23 Sept 2026.

25/02508/HOUApproved

What was proposed

A single-storey rear extension with a flat roof would be 3.4 metres high, 6.8 metres deep and 7 metres wide.

“This application proposes a single storey rear extension with a flat roof, with a height of 3.4 metres, a depth of 6.8 metres and a width of 7 metres. The original plans consisted of a roof lantern and a fascia finish to the rear extension. Amended plans have slightly the width of the rear extension, so it is set in from the side wall, removed the fascia and replaced it with corbelling brick pattern to match the existing. The roof lantern has been replaced for a rooflight.”

Officer report

The site and surroundings

The house is in the Winchester Conservation Area near the Cathedral and adjacent to several Grade II listed buildings.

“Colebrook Cottage is located on the south side of Colebrook Street in an historic context near to the Cathedral and within the Winchester Conservation Area. The dwellinghouse is located adjacent to 13-15 Colebrook Street, which is a Grade II Listed Building to the east. This building is a group of three red brick houses dating back to the 18 th Century. To the west of Colebrook Cottage is 16 Colebrook Street, a Grade II Listed Building.”

“The house has a long rear garden to the south. Immediately to the west is a private road called Colebrook Place which is unmade. This runs parallel to the side elevation of Colebrook Cottage and the side of the rear garden and provides access to 11 terraced properties which face west towards the application site. To the north of these terrace houses are 3 other terraced properties fronting Colebrook Street to the north.”

Officer report

Earlier applications and changes

A two-storey front extension and rear extension were permitted in 2019, while an earlier rear extension application was withdrawn.

“Application Ref.: Proposal Decision & Date 19/00959/FUL Two storey front extension, new first floor window, single storey rear extension. Demolish existing outbuilding. Permitted: July 2019 05/01535/FUL Single storey flat roof extension to rear Withdrawn: August 2005”

Officer report

Why officers recommended permission

Officers considered the amended design, scale and materials would preserve the area’s character and would not harm neighbouring amenity.

“There have been objections from occupiers of neighbouring properties stating that the height and depth of the extension is excessive. However, the extension is proposed to be a height of 3.4m – a reduction from 3.6m as originally submitted – and a depth of less than 6.8m, which is considered to be proportionate to the dwelling and surrounding context and would not take up a substantial portion of the rear garden.”

“The rear extension would be subservient and not visually dominant. The application proposes materials which match the existing dwellinghouse and surrounding area. It therefore preservers the character and appearance of the area.”

Officer report

Consultees and residents

Trees officers and the historic environment service raised no objection, while objections concerned overshadowing, lighting, design and consultation.

“Service Lead – Sustainability and Natural Environment (Trees) • No objection subject to conditions Historic Environment • No objection to the amended plans…”

“Objecting Representations: • Objections from 11 addresses were submitted (not including a comment addressed from outside the Winchester District). The comments are summarised below o Concerns regarding overshadowing o Light disturbances caused by roof lantern and amended rooflight o Design not in keeping with the area (plans were amended) • Some objections also cited concerns regarding the consultation procedure.”

Officer report

Support for the proposal

One letter supported the application, describing it as modest and finding no material harm.

“Supporting Representations • 1 letter of support from 1 address. o Believes the application to be modest and sees no material harm…”

Officer report

Members’ consideration

The committee questioned the speakers and debated the application before reaching its decision.

“The committee proceeded to ask questions and debate the application.”

Minutes

The committee’s decision

Permission was granted for the reasons and subject to the conditions and informatives set out for the development.

“The committee agreed to grant permission for the reasons and subject to the conditions and informatives set out in the report.”

Minutes

Sources

  • Winchester Planning Committee minutes, 23 September 2026
  • Agenda and papers (council website)

Source: Plota analysis of Winchester's committee minutes and officer report. Quotations are the council's own words; headings and summaries are Plota's.

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At the meeting

Council
Winchester
Date
Wednesday 23 September 2026
Committee decided
Approved
Minutes
The council's minutes
Meeting
Agenda and papers (council website)
Application
The application (council website)

This committee's year

36 decisions in the 12 months to this meeting, 2 against officer advice.

Source: Plota analysis of the committee's minutes.

Every decision by this council's committees →