They can guide you and give advice  on what they see is popular or "up and coming"...often, they hear of properties that are going to go on the market before they hit the market (some "for sale by owners").Keep learning at BP, keep asking questions, read the BP books.

The other half is: excellent finished product design and management at a reasonable cost. 

With an average of 92 days on the market for listed homes, we needed to craft a thoughtful design that would match the build of the home, and drive top dollar in the market with as few days active as possible Upon completion, this home received multiple offers in the first week of listing the property for sale and went under contract just 9 days after listing!

I just designed and finished installing a 1314 sq foot home.

It's usually 45-60 minutes instead of 15 however, and a local rep or property manager can be the "designated agent" who is required to respond to nuisance complaints within the given time period.

Hard money loans are often short-term and designed for projects with a clear exit strategy.

Propstream is a pretty popular platform and you can also try Invelo.

Sewer and water systems are not designed for 8 adults taking showers and excreting waste. 

If you need any feedback on design/furnishing, especially something that screams GAMEDAY!

BiggerPockets is full of resources designed to help you along your journey, whether you are just getting started or a seasoned investor.