Building
Bakery
A bakery was a bakehouse with a domed masonry or clay oven, heated by burning wood inside it, raking out the ashes, then baking the bread in the stored heat. In towns professional bakers sold loaves; in the country many lords kept an oven which tenants were obliged to use for a fee, a practice best documented in France. Home ovens were a fire risk in thatched settlements, one reason for communal baking.
Caveats (confidence: medium)
Evidence cited for lordly ovens is largely French; English manorial ovens existed but are less well documented.
Sources: en.wikipedia.org