I feel in real estate if one is truly involved in it these are two of the most important sites utilized.

This sewer line runs under 2 of the other subdivided lots that were intended to have houses on them about 400' away and ties into a city main 1 block away from the houseOct 2008 - I purchase the home and everything is great, assuming all is per plan.2010 - Developer sells one of the lots that my sewer runs under to the water district for a future clean water well site. 

Another thing is, the sites that list the manufacture year showed that all the ones I was looking at were built in the 70s.

I went to a learn-on-the-site program that our local REIA had recently.  3BR/3BA house, owner is probably in 145K after fix up (I know the purchase price, don't know what was spent to get it ready after purchase) and a handful of years later it's now worth 190K. 

A good way to find deals is by connecting with local real estate agents, wholesalers, or checking out sites like Facebook groups and Craigslist.

Aside from the risk of taking on the property with tenants, you may also have to purchase site unseen which makes it tough to calculate repair costs. 

They require a site plan to get that started.Has anyone had any experience with this and have done it successfully?

Currently living in Los Angeles but I visited San Antonio for the first time in many years, and it definitely seems much more lively and developing than many other places I’ve been to.

We had a few hiccups with the timing of contractors on site and it lead to a 4 to 6 week delay.

I'll keep you in mind for the work mentioned on your site.