Replace: how it works and the numbers

Short answer

Replace swaps a finished building for a different kind on the same pad and gives half of the old one's price back.

What it does

Open a finished building and choose Replace to put another kind on its pad. The old building goes, half of its base cost comes back (each material rounded up, within your storage), and the new building is placed like a normal build at its current price.

The new building starts at level 1, so replacing a high-level building throws its levels away. You can't replace the keep or a barricade, or a building that is still being built, upgrading or wrecked, and not while a fight is going on.

Tips

Replace early, while the building is still level 1: nothing is lost.
If your stores are full the refund can be smaller than half; spend some first.

Questions

Can I swap a building for another in Voxhorde?

Yes. Replace turns a finished building (not the keep or a barricade) into another kind on the same pad. You get half of the old one's base cost back and the new one starts at level 1.

Numbers come straight from the game's rules and update with every release.