What buildings do in the progression loop
Construction is described as a way to grow and customize the home base. The important published relationship is progression: camp development unlocks new recipes, upgrades and abilities.
Use the Structure counter before committing a task
Patch 9.0.76 added a visible counter beside Structure cards and increased their uses again after the 9.0.74 increase. Use that live counter to decide whether a Structure can cover the next task; neither patch publishes universal numeric totals.
Restore a Depleted building instead of rebuilding it
Since patch 9.0.78, Campfire, Garden, Lumber House, Mine and AP Machine stay on the board in a Depleted State after their uses run out. Select the depleted card and follow the restoration recipe shown in your game. The official patch confirms that each affected building has a specific recipe but does not publish the ingredients.
Build and upgrade a Garden
The Garden has a complete player task of its own: make the base card from Soil, Twigs and Water, combine matching Gardens for +1 and +2, then use Water to restore Garden +2. Follow the linked Garden guide and check the output preview before spending materials.
A worker no longer disables a workerless Structure
Patch 9.0.82 says Structures that do not require workers now also function when workers are attached. Update before removing or rebuilding a Structure that appears idle with a worker on it.
Recover Storage and sell Resource Mines after patch 9.0.81
Patch 9.0.81 makes Resource Mines sellable and says Storage cards left outside the board return at a random position instead of disappearing. It also makes the Storage recipe drop from School.
Update before retrying a Builder objective
Patches 9.0.84 and 9.0.85 fix Builder checks involving upgraded Buildings. If an upgraded card is not accepted, install 9.0.85 or newer, reload once and retry the objective before rebuilding or selling anything.
What is intentionally absent
Public information does not list current building costs, construction times or production rates. Use the live card values before spending resources or planning a large build order.
What Steam achievements confirm
Steam includes Architect for building a first Structure and Engineer for upgrading a Structure to level +2. These are useful progress markers, but they do not expose costs, timings or the complete building tree.