The investment is often 1/3 to 1/2 of what the same square footage stick built house would cost, And - the rent I get is virtually the same.

The days of taking a guess based on square footage of the space are over.

Plus you can store the footage indefinitely and get motion alerts that are customizable.

@Arthur TomaBy saying "I am a serious buyer" it, ironically, makes them wonder if you are a serious buyer.By saying "this is not a mass mailer" it, also ironically, makes it feel like a mass mailer.Only include the appropriate neighborhood for the house you are sending it to and include one specific thing about their property (square footage, number of bedrooms, size of garage, etc.) to let them know you know at least something about their property.

The numbers for a property don't seem to ever add up to the sq footage and revenue of the property. 

It’s being used as student housing and the properties closer to the school sell for more and the properties further from the school sell for less mine is basically on the boarder of where those price differences split.2) the basis I used were better comps because they were closer to the property and closer in square footage.

Check with your fire department to see if there are loopholes based on square footage and find it in writing. 

Small multifamily are priced similar to SFH of the same square footage. https://www.reikit.com/ offers a free ARV tool so you can do your own analysis.

Example deal (based off of an actual house currently on the market)Property: 5bd 3ba, 2300sq' (with additional convertible square footage)Purchase Price: $480,000Funding: 5% down plus 5% closing costs ($47,000) conventional loan, keeping 6mo of liquid reserves.Room by room rental income per room: $800/mo or $1000/mo (section-8) = $5k-$6k/moCashflow after expenses: ~$2000 conservativelyA credit partner could receive $1000/mo in passive income and/or some % of equity in the deal for a certain period of time (maybe as long as their name is on the loan) or until a certain amount of $.

the most common way is to use square footage.