[lucfranken]

Generally only /companies/:companyId/buildings

And then you get a list of all buildings for this company.

Every building has a url like: /buildings/:buildingId

So you constantly get back to the root.

Only exception is generally a tenant id which goes upfront for all requests for security/scoping purposes.

[osigurdson]

This seems like a really good model. It keeps things flat and easy to extend.