Washington inherited two large estates; the first was the estate he got possession of when marrying Martha; however, unlike most husbands of that era he didn’t “consume” the ownership of Martha’s estate into his own; he operated it in a “trust” capacity for the benefit of Martha and her daughter by a previous marriage.  

Permittable bedroom count is going to dictate your max occupancy load per the myriad of local regulations.

Does the design change load bearing walls?

So first, you need to determine whether or not the plumbing CAPACITY is up to today’s standards.  

Experience derived from extensive dealings with people for 40 years professionally and in the capacity as a landlord.

This will make them laugh and then you have their permission to make a boat load of money on the sale - but in our closings the Sellers don’t have any idea what our numbers are.

Your standards can be even tighter based on bedroom size, flexible space, plumbing capacity, and other factors.Check out the Keating Memo from HUD to learn more: https://www.hud.gov/sites/documents/DOC_7780.PDF

This will vary property by property and area by area, but in area not only do you have all the city/county level planning: access, traffic counts, density requirements, unit counts for school districts, sewer capacity, etc, but you also have neighborhood councils which will have additional level of say in final design, scale, unit counts, uses, etc.  

The Queen Mary’s resurgence, with expanded hotel capacity and popular attractions like ghost tours, is a key part of this effort.

Here's kinda what I have: (I usually really front load properties with alot of repairs and painting so that it pushes alot off into the future)+ Gross rent- property management 10%- vacancy rate 5%- cap ex savings (250/ month?)