Sutton Council has approved a plan to convert a six-bedroom House in Multiple Occupation (HMO) into a ten-bedroom HMO in Wallington, despite objections from local residents.
The Planning Committee of Sutton Council met on Wednesday 7 October 2026 and granted permission for the change of use at 16 Onslow Gardens, Wallington. The property, which is already operating as a six-bedroom HMO, will now be able to accommodate up to ten residents.
The application was called in by Councillor Dave Tchil due to concerns raised by over 10 objectors. Primary reasons cited by these objectors included concerns about overdevelopment and intensification, harm to the Area of Special Local Character (ASLC), neighbour amenity, parking stress, and inadequate management and refuse arrangements.
Acceptable Intensification and Character Impact
The decision to grant permission was based on several factors, including the property's location within an Area of Potential Intensification (API), where higher density housing solutions are encouraged. The concentration of HMOs within a 100-meter radius was assessed to be below the 20% threshold considered harmful to the area's character. Furthermore, the proposed changes were primarily internal, preserving the building's character and the ASLC. Council officers recommended approval, citing compliance with HMO policies, no adverse impact on neighbour amenity due to a robust management plan, and acceptable transport and technical matters. Relevant policies include Sutton Local Plan Policy 10, Policy 28, Policy 29, Policy 30, and London Plan Policies D3, D4, D6, T5, T6, and T6.1.
Robust HMO Management Plan
A site-specific HMO Management Plan was deemed sufficient to manage noise, behaviour, and waste, thereby preventing adverse impacts on neighbour amenity. This plan is strictly enforced by planning condition and includes an occupancy cap of 10 residents in 10 single-occupancy rooms. Prohibited activities include room sharing, sub-letting, couch-surfing, parties, large social gatherings, amplified external speakers, and loitering. Mandatory quiet hours are enforced internally and externally between 10:00 PM and 7:00 AM daily. Immediate neighbours will receive a letter with contact details for a 24-hour emergency line. A complaints log with mandatory response timescales and a four-stage anti-social behaviour procedure are established. The plan also mandates weekly management inspections of common areas and bin/cycle stores, quarterly audits, and bi-annual room inspections, along with daily monitored bin presentation rotas.
Addressing Parking Concerns
Concerns about parking stress were addressed by the site's good public transport connectivity and the provision of secure cycle storage for 10 bicycles. The Council's Highways Officer raised no objections, concluding that the additional demand would be absorbed without impacting highway safety. An independent parking stress survey was also submitted. Crucially, a Section 106 legal agreement will be secured to restrict all future occupiers from applying for or holding Council parking permits, preventing any additional demand on the existing permit parking scheme.
Technical Compliance
Council officers also deemed several technical matters acceptable. The proposed bedrooms met or exceeded Sutton Council's HMO amenity criteria and national minimum space standards, with all bedrooms featuring private en-suite facilities. Communal spaces were considered adequate for 10 occupants. The relocated refuse storage area in the rear garden was deemed acceptable and did not negatively impact the street scene. A submitted Fire Safety Statement met the highest standards. The site's Public Transport Accessibility Level (PTAL) rating of 3 (Moderate) and proximity to public transport were noted, with the Highways Officer raising no objections.
The committee granted permission after considering the proposal, which included the provision of cycle storage to the rear.
Area of Potential Intensification
While the exact definition of an 'Area of Potential Intensification' (API) in Sutton's planning policy was not explicitly detailed, the information indicates that properties within such areas are subject to policies encouraging higher density housing solutions. The designation of 16 Onslow Gardens as being within an API was a factor in the decision to permit the intensification of the HMO, suggesting these are areas where higher density residential uses are expected and encouraged.