I live in an apartment complex in SW Austin that has a lot of open space, enough to build a trail of maybe 1/2 to 3/4 mile long that would include some interesting features. I've been toying with the idea and even walked of a section to see how it would flow. The Tip came here one day and thought it had potential too. Anyway, I was working on my bike a few weeks ago and the complex manager who lives on the property stopped and asked me if I could help her find a bike — the type with big wheels. I said I could and ended up building her a bike that she is really happy with (she had been a roadie for some years but stopped riding for some time. She wanted to start again, but not on the road)... So happy that she asked if I'd be interested in helping other people in the complex with their bike needs, and maybe start a biking group to take out on rides in the community. One thing led to another and I mentioned the idea of building a trail on the complex property. She was open to it, especially from the POV of security. Wonderful... But what are the legal implications of doing something like this?