Regenerative Design
The straw grew here, in fields close enough to walk to. The hemp came from inside the Short Circuit. The mycelium was grown on agricultural waste. It insulates the walls, and in some parts of the building it carries load.
All three drew carbon out of the air while they were alive. Sealed into a wall, that carbon stops moving.
Your Sanctuary is built to breathe. Hemp and lime take moisture out of the air when the room is damp and give it back when the room is dry, so the air never feels heavy or parched.
The stone comes out of this landscape, cut and laid by people who live in the same valley. The lime is slaked and applied by hand, and repaired the same way for as long as the building stands.
No new ground is taken. The Sanctuaries rise on the footprint of the two sheds, the ruin is recovered where it fell, and land that has never carried a building will not carry one now.
The soil is measured every season. The carbon in the walls is counted when they go up, and keeps rising for decades as the lime absorbs. Both belong to the same figure, and the figure goes up.
That is what regenerative design means: the building is part of what the land is doing.