Any investors in the Houston area with experience in building an addition for a home to increase square footage and add value?

While I'm not a legal professional, here are some general considerations that might help guide your decision:If there are any legal problems pertaining to the property, an LLC might offer an additional degree of protection for your personal assets.

Additionally they might want owner finance with some down for the business, building, or BOTH. 

In addition to being a college town, the business industry looks positive.

If the in-place rents generate don't generate enough cashflow to cover your debt service, you'll want to plan to bring additional equity to the deal to cover the shortfalls.

Additionally, alternatives like real estate crowdfunding or investing in RE mutual funds offer diverse options.

What's your thought on addition?

Additionally, they can know of contractors or be able to offer rough costs for typical improvements.Remember that accurately estimating rehab costs is a skill that improves with experience.

Additionally, if there's a particular aspect of real estate you're eager to explore or learn more about, let me know, and I'll do my best to provide valuable insights.

Tell them when they pay the rent, you need a copy of the utilities bills to ensure they are being paid or as you said you pay and they add it to their rent.