Hey Castlenock,
that sounds like an awesome project opportunity!
I guess we’re not talking about terraced housing or appartment buildings here, right? 
Have you thought about getting a reasonably priced handheld scanner for your furniture? Because that would be much more efficient than using a classic lidar since you would need at least two handfuls of stations around the chair and then you need to align them and all that. The handheld will do all that for you…