I suspect this is the biggest of a slightly long list of issues with this investment.- is this your first section 8?  

I agree with @John Underwood that insurance is the biggest hurdle.

The good news is that most of the businesses are moving to Texas which is the biggest hurt that they can put on the state.

The downside of that is I am leaving money on the table.

The main property will be my primary residence.My biggest question is, what kind of foundation would you use, (that is to code and will pass inspection/permits in Charlottesville) that is either relatively easy DIY or cheap to outsource.

Your biggest expense is the mortgage that never increases, while your small expenses grow with inflation your rents grow as well. 

If you are borrowing for renovations, you will likely have a draw fee in the $100-300 range per draw.Selling costs: biggest one is commissions.  

*Development plans for expanded Hoffman Town Center*Although specific tenants have not been named yet due to the development being in the earlier design and planning stages, the vision as described by Hoffman Co. is a commercial and residential mixed-use development including a new public school, storage center, city agency training, a farmer's market, festival space, beer garden, and "other similar uses approved by the city".Sources:Developer laying groundwork to go bigger in Alexandria’s Eisenhower corridorAlexandria considering big plans for properties next to Eisenhower Avenue Metro stationPotomac Yards Alexandria: The 2$ Billion Sports Arena is not the Biggest Development in the Pipeline for Potomac YardsThe Sports Arena was a recent idea that was part of a bigger plan approved in 2017, that called for a massive shopping center at Potomac Yards and the surrounding area to be redeveloped into 1.9 million square feet of office space, 1.1 million square feet of residential space, 900,000 square feet of retail, 300 room hotel, and 9.3 acres of open space by JPG Smith.

We've found it has superior reporting features, integration features, and is overall more efficient to work within than other REI-specific software.The downside is QBO is not set up for REI so you'll need to do that or work with an expert to ensure it is set up for your business appropriately.Something else to keep in mind is your entity structure and how your entities file tax returns.

What are the biggest pitfalls I should look out for?