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Search the Public Notice PortalAn office block could be turned into almost 400 flats under plans to transform one of the town centre’s most prominent empty buildings.
Quadrant House, opposite Sutton station, has stood largely vacant in recent years after falling out of favour as office space.
Now, developers Knight Frank want to convert and extend the building into a 22-storey housing development containing 370 flats, alongside co-working space, a community hub, and landscaped public areas.
The plans would keep much of the existing structure but give the tower a major overhaul, including a new exterior, rooftop gardens, and shared spaces for residents.
READ MORE: What do residents want to see in Sutton this year?
Developers say the building has been empty since 2024 and can no longer be legally rented out as offices due to its poor energy efficiency rating.
Planning documents suggest that demand for large office buildings in Sutton has declined, with businesses instead seeking smaller and more modern workspaces.
The proposed flats would include a mix of studio, one-bedroom, two-bedroom, and three-bedroom homes, with most designed as two-beds or larger.
Ten per cent of the homes would be wheelchair accessible, while every flat would have its own balcony or terrace.
The development would also include children’s play areas, landscaped gardens, and more than 400 cycle parking spaces.
A public co-working area and community space would be built on the lower floors.
The scheme would be largely car-free, apart from 11 disabled parking bays.
The latest version of the plans is slightly smaller than earlier proposals, with parts of the building reduced from 24 storeys to 22 following talks with Sutton Council and the Greater London Authority.
The site sits within an area earmarked for taller buildings and higher-density housing as Sutton town centre continues to grow around the station.
Several major housing schemes nearby have already been approved or built, including Sutton Point, Sienna House, and the redevelopment of the former B&Q site.
However, the plans currently include no affordable housing.
Developers claim rising construction costs and difficult market conditions mean affordable homes are not financially possible at this stage, though discussions with the council are ongoing.
The proposals also promise environmental improvements, including solar panels, green roofs, and extra planting around the site.
Protected trees would be kept where possible, while upgraded pedestrian routes would better connect the station with Sutton High Street.
The plans even include measures to protect peregrine falcons, known to nest on the building.
Council planning officers and City Hall officials are said to have reacted positively to the revised proposals during early discussions.
A decision is expected to be made at the end of July.
