Two granny annexes at 18 & 20 Wilmar Close, Hayes

“The application proposes to change the use of the space inside two linked outbuildings constructed within the rear garden of Nos.18 and 20 Wilmar Close to use the space as ancillary annex accommodation to the main houses.”

“Plan n in g permission is sou gh t to ch an ge th e u se of th e two ou tbu ildin gs constructed to the rear of Nos.18 and 20 Wilmar Close to use the buildings as an n exes to th e main h ou ses. Th e amended plans submitted show the provision of a n open plan living area containing a kitchenette, lounge/living space and a bed. A separate W.C is proposed. No external changes are proposed.”

“Nos.18 and 20 are a semi-detached pair of two storey houses located at the end of Wilmar Close, a residential cul-de-sac in Hayes. The properties benefit from off -street parking to the front and relatively large rear gardens. There is currently no boundary treatment between th e two h ou ses. An attach ed pair of sin gle storey outbuildings has been constructed to the rear of the properties. The…”

“Hillingdon Planning Committee – 17 th July 2025 PART 1 – Members, Public & Press  outbuildings are constructed from red brick materials and feature a flat roof. The outbuildings are currently unused.”

“The proposed outbuildings each measure 20sqm in terms of internal floor area and would function as two separate annexes to the main houses (18 and 20 Wilmar Close). The internal living space is small, compared with the guideline min imu m space standards for a studio flat (37sqm) allowed for within the Governments Nationally Described Space Standards.”

“The primary aim of parts iii and iv of Policy DMHD 2 is to prevent the use of outbuildings as independent living accommodation in unsuitable locations, where such uses may impact negatively on the character of the area , residential amenity or present other negative implications such as increasing parking pressure or affecting access.”

“Officers introduced the application noting that the matter had previously been considered at Committee on 9 April 2025 but had been deferred for a site visit. It was reported that the site visit had taken place on 2 June 2025 at which time two noticeable issues had been observed. Members heard that, during the site visit, it had been noted…”

“It was noted that the application had previously been recommended for approval subject to the omission of kitchen facilities in both outbuildings. However, it was confirmed that the current plans, which included a kitchen and all other amenities consistent with use as independent living accommodation, were in contravention of the Council’s outbuilding policy.”

“The officer’s recommendation was moved, seconded and, when put to a vote, unanimously agreed.”