Hey Danny,
Actually, Rhino makes pretty quick work of this, though I just lost all my saves to save the result out....

Importing this cloud in Rhino you have the option to bring it in as a special entity type "as one", which opens it really quick.. Then it has a section tool to work it pretty quick.. I havnt explored it fully to see if it is more automated than a single plane at a time, but even a single plane at a time I could have a surface in about an hour...

I'm fooling around with a result in MoI right now using ConnectPoints, but I have to do it plane by plane and each calc takes a few minutes to complete...

I've got about 1/18th of the house done so far.. I will have to use rebuild on the resulting curve after I get them... The curve through points would be nice to automate on a plane type selection of points. Or if the ImportPoints script was more robust in it's curve creation to set a "plane direction" to get a desired result..

Anyway, I'll post if I get anything that looks somewhat acceptable.