Buildings can represent anything from a single property to a block of flats and it is used to group units into a single entity.
You must provide at least an address, currency and name.
curl https://api.yorlet.com/v1/buildings \-H "Authorization: Bearer {{API_KEY}}" \-H "Content-Type: application/json" \-d '{"address": {"line1: "26 Goodge Street","city": "London","postal_code": "W1T2QG","country": "GB"},"currency": "gbp","name": "Yorlet HQ"}'
See the create a building API for a full list of parameters you can send.