Townhomes usually are defined by controlling the land underneath the property.  

Did the brother consent to the sale or was it sold from underneath him?

We're talking about tearing up all the pee-soaked carpet (dogs..) and bleaching/disinfecting the concrete foundation underneath, replacing a majority of the second floor sub-floor, fixing the roof, fixing the HVAC, repairing the garage (door hanging on by a thread), scrubbing and disinfecting all the cabinets (roach feces everywhere), tearing up and replacing the landscaping, fixing the roof, inspecting and repairing any water damage... the list goes on and on.

Even if the roof is falling in it's probably still cheaper to just repair it, all the infrastructure, utilities, surveys, permits, soil studies etc cost a fortune.  

Do you have a proper vapor barrier covering the soil?

If your development consist of individual housing structures, simply calling 411 may suffice.To determine the subsurface soil conditions, you will need a to involve a geotechnical engineering firm. 

Luckily, I've taken lots of photos before we tore the stained & soiled carpet out, so I am doing that today.  

She still wont sign.. title company now wants an amended order from the judge which was another legal bill. and the title company wanted 90 days to pass to give the lady a chance to appeal.. that all pass's and we finally close Lady never did sign .. and title company just fed exed her proceeds check to her.. we then had to evict her that took another 6 months in Portland.. and after all of that we demo's the house.. but we had 3 lots underneath it and now there are 3 new constructions there.. 

a lot of the bottom and sides of the pool so that water will drain into the soil. 

So our home has had some foundation movement from expansive soil.