Hey, Robert,There are a lot of moving pieces to your questions, but I'll try to tackle one element of what you're asking, based on my experience.

We also had someone leave there dog outside when it was 90-100 degrees and the puppy died from heat exhaustion,  (after that,their home magically became  a no-pets allowed!) 

You and your partners should decide upon the key elements of the deal, including (IMHO):Ownership percentage: who owns how much.Contributions: who is contributing what (and how much); what are obligations, if any, for future contributions (for example, it's common for an Operating Agreement to say that the partners each contribute $X at closing and have no obligation to make any future contributions. 

The foundation is key... lots of time spent in the basement looking at electrical boxes and heating units etc... the roof... 

To the point the heat was broken dead of winter and it took 2 days to get back to her, and then the property owner refused to replace the hvac-against technicians advice.

With SFH I can meet the 1% rule rather easy but heating expenses aren’t shared between multiple doors.

Provinces are different in terms of property taxes, purchase taxes and general cost of living (electricity, heating, etc). 

so, the one with the counter, sink, and microwave would be considered to have a kitchen except, perhaps, for the missing heating unit for cooking foods. 

in particular, poured concrete, vinyl siding, and electrical heating?

However it doesn’t matter cause persistent and not giving up is indeed key elements to success 2.