Expanding the proposed medium-sized site definition of ten to 49 homes to up to 150 for London has won the backing of MPson the all-party parliamentary group, APPG, for SME housebuilders.
Developers Pocket Living claim this would unlock thousands of SME-led homes, as the 49 limit fails to reflect the capital’s urban environment.
Pocket Living chief executive Paul Rickard said:“ It is crucial that policy interventions, planning processes, and regulatory frameworks are designed in a way that recognizes the unique challenges faced by small and medium-sized developers. Only then can we build a diverse, resilient housing market that meets the needs of all.”
The developer and other industry leaders argue that London’s urban landscape means that mid to high-density building is common on small sites.
Pocket Living claims the ‘medium site’ definition of up to 49 homes in the government’s planning reform working paper could lead to lower-density designs in London, reducing housing delivery.
The Home Builders Federation Mind the Gap report shows just 30,000 homes were completed in the year to June 2025, with the capital unlikely to hit its 440,000 new homes by 2030 target. Tougher fire safety rules, high remediation costs and a complex London plan are cited as impediments.
If a higher limit for medium-sized sites was applied in London, then the capital would benefit from simplified biodiversity net gain rules, exemption from the building safety levy and build-out transparency measures.
Brokers Hank Zarihs Associates said development finance lenders wanted to fund the building of more homes on small sites in the capital and that a lighter regulatory burden would help.
SMEs perfectly poised to transform small sites
APPG chair Sarah Edwards said: “Across the country, underused sites and empty shops blight our communities, yet SME housebuilders have the flexibility to transform these spaces where large developers won’t.
“SMEs face disproportionate costs, stifling their contribution. We must support them to revitalise neglected areas and deliver the homes our communities so badly need.”
Pocket Living’s report The Road to a Proportionate System shows how SMEs’ average higher costs of £60,000 per home compared with larger developers could be cut overnight.
The report’s action plan includes a section 106 template to cut legal costs, and negotiation burdens and brownfield passports to legalise predictable, low-risk intensification. Biodiversity net gain requirement to be simplified for small brownfield sites with a national development management policy of automatic approval for brownfield housing on less than 1.25 acres.
Retirement housing schemes on small town-centre brownfield sites should have a ‘presumption in favour’ and cost exemptions to boost SME delivery and local economic vitality.
Other points include reducing planning fees and capping planning performance agreements, gauging planning validation requirements to scheme size and relaxing lending rules to make it easier for homebuyers to borrow.
LinkedIn Question: What pressure should the government exert on councils to use local development orders and design codes to make it easier for SMEs to build new homes?