There is the first and last month's rents for the lease, and there's a separate check for the Option Consideration which buys the Option Contract. 

The basement is currently used to service the washers and dryers for two of the units, I can expand the basement to make separate storage units and increase the rents for sure. 

What is involved as far as cost and scope of work to separate water meter/billing for a duplex?

(For example separating two homes on one larger parcel)- Setbacks for the zoning. 

Separately metered.

If you're required to live in the house your fiance is building for obvious reasons (you're married and it would be weird living in separate homes in the same town), then buy the 2/3/4 unit now while you're not married, and rent out the third unit once you are married.

UTILITIES: With what is happening with the natural gas market make sure the tenants have separate utility meters before you buy the property.

The owner should be contracted with the architect to design the building and should separately be contracting with the builder to construct the house.

They are somewhat separate issues Finding out who owns the propertyLocating and finding how to contact themThe second one is by far the harder of the two. 

Sell our house come February, buy another primary residence that has room for rental income (i.e. space for ADU, downstairs with separate entrance). 2.