Seven-bedroom detached house at Land Rear Of 3-, 7 Seaforth Gardens, London N21

What was proposed

The application proposed a large two-storey, seven-bedroom detached home with a garage, gym, outdoor pool, driveway and landscaping.

“Executive Summary 3.1. This application seeks planning permission for the erection of a large two- storey detached dwelling on backland garden land to the rear of Seaforth Gardens/Broad Walk, within an established residential area adjacent to Grovelands Park. The proposal would deliver a 7-bedroom family dwelling with associated landscaping, access, parking, and ancillary features including a single garage, swimming pool, and gym.”

“Proposal 5.1. The proposal entails the following works: • Erection of large two storey detached dwelling at the site that would introduce a flat green roof. • The new dwelling would feature 7 bedrooms, a gym, a single bay garage with storage, an outdoor swimming pool, alongside associated works to include a driveway, manual gates along the access and landscaping. • The dwelling would measure approximately 6 metres high, 38.7 metres wide and 17.7 metres deep.”

Officer report

The site and its surroundings

The site was former garden land beside Grovelands Park, with adjoining rear gardens, mature trees and a narrow private access lane.

“The application site refers to land formerly part of the garden of No 3 Seaforth Gardens and land which forms part of the rear garden of No.35 Broad Walk. The entire site covers a total area of approximately 2,429sqm and is bounded by rear gardens of the adjoining properties to the north and east (1-7 Seaforth Gardens / 33/35 Broad Walk) with Groveland’s Park (Grade II* listed- Historic England list entry no. 1000395) situated to the south / west.”

“The site is not listed or located in a Conservation Area. There are mature trees at the adjoining Grovelands Park that are sited immediately behind the north and west boundaries of the site. These trees are not under Tree Protection Orders (TPOs), however, they fall within designated Grade II* listed parkland, Metropolitan Open Land and Local Open Space. There is a tree at the rear garden of 35 Broad Walk to the south of the site that is protected under a TPO.”

Officer report

Earlier applications

Earlier proposals included a refused three-home scheme whose appeal was dismissed, followed by a similar proposal that was withdrawn.

“20/02863/FUL - Redevelopment of site and erection of 3 detached dwelling houses, incorporating soft and hard landscaping and installation of boundary fencing, together with car and cycle parking and refuse storage: REFUSED on 02.11.2020 for the following reasons: 1. The proposed erection of three detached dwelling houses by virtue of their…”

“21/03620/FUL - Redevelopment of site and erection of 3no. detached dwelling houses, incorporating soft and hard landscaping and installation of boundary fencing, together with car and cycle parking and refuse storage: Withdrawn on 30.11.2021 due to similar concerns raised on the preceding refusal.”

Officer report

What officers recommended

Officers recommended approval because the proposal would provide a family home on underused land without unacceptable harm, subject to conditions.

“The proposed dwelling has been designed having regard to the site's backland location and surrounding context. Through its reduced scale, flat green roof, contemporary architecture and carefully considered siting, the scheme is considered to overcome the concerns that resulted in the refusal and subsequent dismissal at appeal of the previous proposal for three dwellings on the site.”

“On balance, the proposal is considered to accord with the Development Plan, the National Planning Policy Framework (2026) and other material considerations. The proposal would deliver an additional family dwelling, contribute towards identified housing needs and make effective use of an underutilised site without giving rise to unacceptable adverse impacts. Accordingly, Officers recommend that planning permission be granted subject to conditions.”

Officer report

Consultation responses

The consultation produced one support response and 62 objections; consultees included a drainage objection, while transport, trees and heritage consultees raised no objection subject to matters being addressed.

“Internal Statutory and Non-statutory Consultees Environmental Health No comments received. Sustainable Drainage Objection, insufficient information submitted. Transportation No objection subject to conditions relating to Construction Logistics Plan and refuse storage. Tree Officer No objection subject to conditions relating to Tree Protection and Arboricultual Supervision.”

“Public Consultation 7.3. The table below provides a summary of public consultation. Public Comments: Consulted Support Objection Neutral Comment Total 14 1 62 0 Consultation letters: 25.11.2025 - 05.12.2025. Following the consultation, the comments received have been summarised in the next section. Site Notice: N/A Press Notice: N/A”

Officer report

What people objected to

Objections covered unsafe and inadequate access, emergency vehicles, overdevelopment, character, privacy, flooding, ecology, parking, construction impacts and loss of green space.

“- General dislike of proposal - Inadequate access - Impact on residential amenity - Previous proposal 21/03620/FUL for 3 homes was dismissed on appeal - Access is going to create serious safety problems at this junction. - Affects local ecology - Development too high - The garden was previously part of No.”

“- Out of keeping with character of area - Not enough information given on application - There was previously a garage at the access that was demolished - Overdevelopment - Incorrect details on the plans and Design Statement - Nearby Grovelands Park has an issue of flooding, - Potentially contaminated land - Information missing from plans - Plans not showing proposed gates to the access lane - The site is behind 1-7 Seaforth Gardens not just 3-7 Seaforth Gardens - Devaluation…”

Officer report

Who spoke

A residents’ representative and the ward councillor spoke against the recommendation, while representatives for the applicant spoke in response.

What members debated

Members questioned the earlier appeal, narrow access, emergency obstruction, refuse arrangements and biodiversity; officers explained the revised scheme and proposed safeguards.

“In response to Members’ questions relating to the previous appeal decision, officers advised that they had given weight to the previous decisions. The previous application wasn’t refused and upheld at appeal on the principle of residential development, but because the three large dwellings being proposed on the site and their design were not in keeping with the character of the area.”

“In response to Members’ questions and comments regarding access, officers replied that guidance in the Manual for Streets specified a requirement for a minimum of a 2.75m width for access and there was some tolerance included in that. The proposed access width was 3m at its narrowest short pinch-point, which widened, the road was straight, and tracking had shown a fire truck could turn on site with some manoeuvring.”

Minutes

The decision

The application was refused because the access was considered unsafe, being narrow, the only route and potentially blockable during an emergency.

“The Chair proposed the application be refused on the grounds of the access being unsafe, due to it being narrow, this being the only access to the site, and the potential for it to be blocked/obstructed in the event of an emergency. He highlighted that the appeal decision for the previous application gave considerable weight to the unsatisfactory vehicle access given the potential harm to safety.”

“That the application be refused on the grounds of the access being unsafe, and that officers be delegated to formulate the final wording of the reason for refusal, in consultation with the Chair.”

Minutes