Healthier Homes
Retrofits, insulation, ventilation and damp remediation that make homes warm, dry and safe.
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The Collecting ProjectYour donation goes straight into the Collecting Project — our transparent community investment fund. Choose an amount and help build homes, green spaces and open research that travels the world.
Deep retrofits for ten cooperative homes — warmer in winter, cooler in summer, healthier all year.
The Collecting Project pools donations and member contributions into outcomes you can see — and research others can use.
Retrofits, insulation, ventilation and damp remediation that make homes warm, dry and safe.
Shared gardens, trees, biodiversity and cool, living places for the whole community.
Every project becomes a free case study for the forum — your gift teaches far beyond our street.
A regular gift gives us the certainty to plan ambitious work. A one-off gift moves a campaign forward today. Both make you part of the Collecting Project.
Regular membership is the steadiest way to fund the cooperative — and it comes with a vote.
See memberships →Lend skills — gardening, retrofitting, research, translation — to projects on the ground.
Get involved →Institutions can co-fund campaigns or sponsor research published openly on the forum.
Talk to us →About your donation. Donations are gifts — they confer no shareholder rights and cannot be reclaimed. TRAPEZIUM is not currently a registered charity, so Gift Aid is not available. Donations are not investments and offer no financial return. Full details in our donations & Gift Aid notice.