Has anyone tried anything like this and has some advice?
On the other end of the spectrum, and possible the easiest way to get something up and running, is the web version of SweetHome3D [1]. It is rough in some places and somewhat limited, but it has been around for ever, and still has a lot of potential. It’s also available as an add-on for HomeAssistant.
The hardware is not cheap, but if you have a (friendly) realtor in the area they might be able to let you scan it for a resonable price. Or a dedicated scanning company if you have those in your area.
Worked at a company who had these for doing scans of offices, and you could get the scan in different standard file formats for not a huge price (iirc).
https://support.matterport.com/s/article/Matterport-Assets-Y...