Tax-wise, only the rented portion is deductible, and depreciation recapture applies on sale, increasing taxable gains.

Purchase price: $12,000 Sale price: $18,000 Double wide on 2 lots by the lakes that needed completely gutted and rehabbed.

You'll want not just to go off of comp sales, but also potential income / cap rate calculation, and reproduction costs.

Quote from @Elaine Ericson: Thanks but as I mentioned in post she's a Real Estate agent and she is paid a commission based on sales and does not earn wages. 

Purchase price: $28,500 Cash invested: $178,000 Sale price: $250,000 Bought a 3 unit riddled with drugs or prostitutes from the city at the tax auction, spent a year gutting and consolidating all three units in two structures to a single-family home with an exterior side entry garage.

Purchase price: $110,000 Cash invested: $60,000 Sale price: $225,000 This property has 2 units and 2 storage units creating 4 income streams.

Assigns sale contracts! 

The property is a single family home that is on sale for $179,000. 

Purchase price: $3,000,000 Cash invested: $6,000,000 Sale price: $25,000,000 Ground Up development project due to be completed Q3 2025 What made you interested in investing in this type of deal?

However, this could trigger the due-on-sale clause if financed, so check with your lender.