Other options are rowhouses with accessory apartments in DC or single families with accessory apartments in Montgomery County.

And if possible also build an accessory apartment on our new home and rent that out.What say ye BP?

At a residential facility I work at clients often try to vape in their rooms.

I have a new tenant that wants to vape.  

Much of the regulation applies to renting out individual rooms and/or short term rentals in an accessory dwelling unit(attached or detached ADU on the property. https://www.oregonlive.com/portland/index.ssf/2018/08/80_percent_of_portland_airbnb-.htmlAs a side note,  CM2 land on SE Belmont is a prime zoning for building plexes. 

Check to see what counts as an accessory dwelling in Brantford - this would be a triplex in all but name and might be easier permit wise.

The laws for renting out MIL’s or “accessory dwelling units” seem to vary drastically City to city.

compensation: Box Rate employment type: contractTimberlake Cabinetry, A Division of American Woodmark, is seeking qualified cabinet installation contractors in the Central PA/NJ/Philadelphia area for new home construction.Competitive Pay.Some service/punch out work required.Must be able to complete up to 25 cabinets, trim & accessories in 1 day.Must have general liability, workers comp and auto insurance meeting minimum requirements.Must be able to pass a background check(no felons).shoot me a message or forward along to anyone you might know.

Checkout Southeastern salvage for flooring and other cool accessories, and sometimes cabinets.

Create your own by adding an accessory dwelling to a single-family house, as detailed in this BP thread from California:https://www.biggerpockets.com/forums/61/topics/732543-here-is-my-adu-variation-to-brrrr-its-called-bra2xrrDC, Arlington, and Montgomery County have all updated their zoning laws in recent years to broadly permit ADUs within or behind owner-occupied houses.