
Sutton Housing Society appoints Northvale Construction to deliver an extension and wider improvements to Trickett House, which forms part of the provider’s ambitious airspace development programme.
The circa £7m project will see Northvale Construction extend two blocks by building upwards, adding two floors to the rear block and one to the front, providing a total of 19 new net zero carbon homes for older people.
Rooted in Sutton Housing Society’s rich history, Trickett House was the first scheme built by the organisation in 1967 and will comprise 68 flats when complete.
The airspace extension being undertaken by Northvale Construction upgrades the impacted communal areas and includes the installation of air source heat pumps, solar panels, a green roof, sustainable drainage systems, low energy lighting and an Alertacall system. Externally, there will be additional parking to support the new homes, ambient access to the building and new EV charging points.
Now on site, Northvale Construction will hand over the rear block in 2026 and complete all works by October 2027. Most residents will remain in their homes throughout the project.

Kevin Marshall, Construction Director at Northvale Construction, said: “We’re proud to be leading Sutton’s latest rooftop development, providing environmentally sustainable homes for older people.
“Building upwards is an innovative way to deliver affordable homes without additional land, using construction methods similar to traditional builds. Measures will be in place throughout the programme to ensure we keep everything safe and functional for residents living in the building.”
Robin Roberts, Chief Executive of Sutton Housing Society, added: “Northvale Construction has a passion for building quality, which perfectly aligns with our aspiration to build quality new homes.”
With limited space available for new developments in London, Sutton’s airspace development programme enables the organisation to maximise its portfolio by adding additional floors to its existing buildings.
Trickett House is being funded through a combination of GLA grant funding, a CAF Bank loan and internal subsidy.
Header image: CGI showing how the airspace extension will add an additional floor to the front of the three-storey building