Reclaimed lumber bundle
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Donation
Wood
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Wood (dimensional lumber) — 1,800 lbs • 1071.0 kg CO₂e
Total ≈ 1,800 lbs • 1071.0 kg CO₂e
Circular materials marketplace
Waste less. Share smarter. Help neighbors build with what you already have.
CircularBuild is a donation-first marketplace for homeowners, renters, and small crews to pass along surplus materials. Share what's left after a project, match it with neighbors or local rebuild teams in real time, and document the climate impact every donation creates.
82 lbsMaterials diverted
11Active users
3.5 daysAvg. pickup time
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Move leftovers from basements and garages to neighbors who need them.
Explore marketplace
Preview donation-powered inventories and see what the community is sharing right now.
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Post surplus items, schedule pickups, and document every donation in one workflow.
ExploreRead the briefing room
Policy wins, donor spotlights, and the data behind high-impact reuse.
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FAQs, guidelines, and direct contact with our team.
ExploreMarketplace preview
Explore donation-driven inventories across the network.
Preview a handful of active donations below. Sign in when you're ready to save listings, chat directly with nearby homeowners and community groups, and coordinate easy pickups.
Steel beams, assorted
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Donation
Steel
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Steel (structural, generic carbon) — 2,400 lbs • 2028.0 kg CO₂e
Total ≈ 2,400 lbs • 2028.0 kg CO₂e
Fixtures & lighting lot
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Donation
Fixtures
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Plastic PET (#1) — 600 lbs • 654.0 kg CO₂e
Total ≈ 600 lbs • 654.0 kg CO₂e
Composite decking surplus
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Donation
Decking
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Plastic PVC (#3) — 950 lbs • 926.3 kg CO₂e
Total ≈ 950 lbs • 926.3 kg CO₂e
HVAC equipment bundle
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Donation
Mechanical
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Steel (structural, generic carbon) — 1,200 lbs • 1014.0 kg CO₂e
Total ≈ 1,200 lbs • 1014.0 kg CO₂e
Stories from the field
Neighbors and community crews proving circular works at every scale.
Coordinated pickups, transparent chat threads, and impact-ready reporting keep reuse simple for households, block clubs, and project leads alike.
Read more storiesThe Hidden Inventory Inside Every Renovation
At 7:12 a.m., a crew starts peeling back the skin of a Midtown office floor. Ceiling grid comes down first. Then lights. Then glass. Then the metal studs that …
Read briefingCities That Reuse America: Chicago - Reuse, Chicago-Style
Cities That Reuse America: Chicago Chicago is a city that builds in layers, then keeps those layers in circulation. You can feel it in the streetscape. Limesto…
Read briefingReady to keep materials in circulation?
Create an account to publish donations, receive real-time interest from neighbors, mutual-aid organizers, and DIY clubs, and share diversion data with your community.