In most single family zoned areas adding a single ADU is not a value add meaning it will not add more value than the hands off cost of the addition.  

It is RS-50 zone requireMinimum Lot Size: 5,000 square feet.Minimum Lot Width: 50 feet.Setback Requirements:Front Yard: Minimum of 20 feet.Side Yard: Minimum of 7 feet on each side.Rear Yard: Minimum of 20 feet.Maximum Building Height: 35 feet.Permitted Uses: Primarily single-family detached dwellings.To have different lot size need neighborhood approval, I believe...  

And you do not need a penny to start REI - many people's first investment came to fruition because of friends, family, or even partners.

Investment Info:Single-family residence buy & hold investment.

Investment Info:Single-family residence buy & hold investment.

Investment Info:Small multi-family (2-4 units) buy & hold investment.

Investment Info:Single-family residence buy & hold investment.

From google: “The Fair Housing Act (FHA) does not apply to certain types of rentals, including: Owner-occupied buildings: If the building has four or fewer units and is owned by the person who lives there Single-family homes: If the owner rents or sells the home without using a real estate agent, and they own no more than three homes Religious organizations: If the property is only available to members of the organization's religion Private clubs: If the property is only available to members of the club Senior housing: If the property is designated for people who are at least 55 years old Even if a property is exempt from the FHA, it must still comply with the law's ban on discriminatory statements, notices, or advertising.

Investment Info:Single-family residence buy & hold investment.

Investment Info:Small multi-family (2-4 units) other investment in Martins Ferry.