Active compost pile

Aerobic composting of organic waste; outputs feed greywater/blackwater nutrient reuse and thermal-comfort heat capture.

Cost
Low
Upkeep
Frequent
Skill to build
Basic
Lifespan
Bin/enclosure structure: 10-20 years for timber pallet-style bins; the composting process itself is continuous, not a wearing asset
Embodied carbon
Low
Space / material use
Medium
Output timing
Continuous process
Skill to repair
Basic

Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.

Inputs

Outputs

What this page does not tell you

No sizing or quantities: how much a technique yields, and how much a household needs, both depend on the build and the people, so the catalogue compares options rather than dimensioning them. It carries no bill of materials and no build sequence, and it is written for an oceanic, clay-soil climate (Normandy, France). Regulatory notes are indicative and need confirming locally.