Face it no matter what type of business you go in or if you choose to work for someone else you will make a mistake because you are human. 

You might burn some human capital (like, frustrate your broker/banker/lawyer or the other side) if you go under contract then find something you don't like and don't buy... but obvious I'd prefer to do that than to buying a house with expensive or difficult issues.I know from experience that FHA loans for 3+ family homes can be a little challenging (they have to meet a "self sufficiency" test, where the rents for the units have to substantiate the carrying cost of the property).

Borrowers can put down anything on a piece of paper, and often times it takes the human touch to call BS. 

Installing a diverter in the water tank is a welcome asset, considering up to 27 percent of water in the toilet tank empties into the bowl.A diverter is a simple fix for this problem and, depending on the type of toilet, can be your best option.A sub-meter in every dwelling unit can spot high usage from leaking faucets and running toilets.

Landlord insurance is commonly written on a Dwelling fire form (dp1-dp3) DP3 is the most comprehensive of the three.

@Leeroy AyalaThere are way to many companies to list, but the gist is, you are looking for a dwelling fire policy (dp1, dp2, and dp3) DP3 is the most robust of the 3.  

It has one dwelling now but is zoned R3.

Is it wiser to purchase a primary dwelling and then after we save up again purchase an investment property or would it be more prudent to purchase an investment property and continue renting until the income from the new property accumulates?  

If you are interested, I can speak with you on how to go about developing what would appear to be a single family subdivision, but with a built in multi-dwelling hybrid twist!  

My niche is Multi-Family dwellings.