Hi Sandie,Welcome to BP! 

Quote from @Sandy G.: Hi. 

I know this can very widely and depending on soil type, etc. there can be a lot of changes.

And I would probably look at the smaller houses where you can keep your unit costs down but still rent them at a higher price point relatively speaking. you are arguing one asset class. build a new hotel anywhere in America on any soil it's better than any apartment complex you can own. lower cost per sq ft than type 1 buildings and higher exit. we just ran into that and hotel is way better use after a rezoning application got declined for apartments. hotel is looking much better 

My client i funded and partnered with then went on to tell me its Clay and Clay in that area is in big demand to be used to line ponds etc as the basic soil in the area is very sandy and wont hold water..

We have soil made up of mostly clay, rock, and some sand so digging footers or basement of any kind can dramatically drive up costs.

Cast iron waste lines become so tuberculated that waste can't pass through, or the joints fail and allow heavy root or soil intrusion.

For example, I’m doing three side by side duplexes and it’s costing me $135 psf, but I had to spend an extra $10k per foundation because of bad soil, and the smaller the property the higher the cost psfI’m working on a 28 unit with elevator, demo required, green roof, and it’ll cost me around the same psf as the duplexes.I’m doing three side by side triplexes which are full renovations, basement digout, all new facades, and that’s costing me about $106 psf for construction Non of these numbers include architecture, geotech, MEPS, environmental, utility plan, or finance costs

And the wide sandy beach of Nantasket (3 miles long) is less than 400 yards away.

Same to you down there in the sandy areas.