London Passivhaus pipeline reaches 4,516 homes as 20 boroughs now have schemes

London now has 4,516 multi-residential Passivhaus homes either certified or in development, the Passivhaus Trust said in its latest London round-up, with 3,809 in the pipeline and 707 completed and certified.

The figures compare with the Trust's previous London round-up of 4 November 2025, which recorded 3,198 homes in development and 417 certified, described at the time as over 3,600 homes completed or underway.

Measure	November 2025 round-up	Latest round-up
Homes in development	3,198	3,809
Homes certified	417	707

The Trust said this year's figures reflect growing private sector engagement, citing Barratt London's scheme at Cockfosters and Grosvenor's EnerPHit retrofits in Belgravia alongside social housing projects. The pipeline now includes a community land trust, almshouses, a large private estate and a co-operative, it said.

Barratt London's share

Three Barratt London schemes, which the Trust described as being on Places for London sites, account for 1,111 homes, or about 30% of all Passivhaus homes in development across the capital. When Barratt set out its initial London Passivhaus pipeline in May 2025, it put the total at 728 Lo-E homes.

Craig Carson, Managing Director at Barratt West London, said at the time: "Our Lo-E concept rethinks the traditional approach to high-density housing."

The Greater London Authority's Mayor of London Homes page lists the Cockfosters scheme at Cockfosters Road, EN4 0DZ, Enfield, as consented. It says the scheme will provide 373 new homes, 40% affordable, designed to meet low-energy Passivhaus standards and delivered with Barratt London through the West London Partnership.

Borough picture

Twenty of London's 32 boroughs now have at least one multi-residential Passivhaus scheme, with Hackney, Enfield and Tower Hamlets the newcomers, the Trust said. In November 2025 it reported that a third of boroughs were building Passivhaus homes.

Hounslow remains home to London's largest Passivhaus scheme, according to the Trust, with 967 homes planned at Convent Way as part of an estate regeneration. The Trust had already identified Hounslow as holding the largest number of homes in development in its November 2025 round-up.

Hounslow Council's own announcement on the scheme describes the Convent Way Estate as currently having 390 flats across 17 blocks, and says the regeneration has the potential to deliver around 900 new homes over time. The council said it will now begin procuring a development partner.

Camden and Newham lead on completed delivery, with 288 and 283 certified homes respectively, which the Trust said is four in five of London's certified Passivhaus homes between them. Newham has the most schemes overall at 11, up from 10 a year ago, while Hackney has the most in development with eight infill projects.

More than 90% of London's Passivhaus homes are north of the Thames. South of the river, Lewisham leads with four schemes and 281 homes in development.

Beyond conventional housing, the Trust pointed to the Urbanest development at Trafalgar Way, Canary Wharf, which combines 1,672 student beds with 81 residential apartments and commercial space.

Policy and quality

The Trust said consultation on the Draft London Plan has now closed. It said the proposed changes include space heating demand targets, energy use intensity (EUI) targets and operational monitoring, and that it has called for Passivhaus certification to be treated as deemed to satisfy.

While Passivhaus certification does not replace statutory building safety requirements, the Trust said, its disciplined approach to design, documentation and verification can help foster a stronger culture of quality across the construction process.

What happens next

The UK Passivhaus Conference 2026 takes place on 18 November at The Queen Elizabeth II Centre, SW1P, from 09:00 to 18:30, with online tickets also available. A Passivhaus Masterclass runs the day before and a new festival, PassiFest 2026, runs in the week before the conference.

The opening session, Passivhaus Levers in the UK, brings together Sapna Halai of the GLA, John Palmer of the Building Safety Regulator, Jack Ostrofsky of Warmer Homes London and Attzaz Rashid of Barratt London, with a keynote from IPCC Vice-Chair Dr Diana Ürge-Vorsatz.