How much does a separate garage stall for each side increase rents / equity?  

I told her that if she can get it zoned as 2 separate units than my offer would obviously be higher than what I initially offered.

Not only does this allow you to, as landlord/owner, occupy the unit a portion of the month for rehab or personal use, but it allows you to rent a single-family property as several separate bedrooms.

BTW, the IRS treats dealerships and dealers differently than non-dealers, and this is a good reason to contain your separate business ventures in well defined and independent entities.

I'm wondering if there are any particular pros/cons to doing this versus using a separate buyer's agent.Just curious for others' thoughts and experiences.

The vinyl plank looks great, won't separate when the foundation inevitably flexes, won't puff up when somone spills water on it, won't scratch as easily, looks great, AND was slightly less expensive than laminate.

Does it make sense to have separate accounts?

Unless you plan to sell the 2 properties separately, I don't know why it should be a problem.

Also does the space have to be separated for each tenant.

We buy/hold and rent out our SFR/Duplexes/Multifamily Properties.We use 'Classes' for our 'Customers' (Tenants) to help separate and sort the data.