When I built my house about 18 years ago, my builder told me that even though I did not have a sprinkler system installed he had stubbed it out in a way that would make it easy to add one if I chose to later.

Problem is that the builder took ill shortly after we closed, and he passed away. He never really had a chance to tell me where to look for the "stubbing out" he'd said was done.

I've snooped around for any stray pipes, connections, anything that might tie into such a thing, but in all honesty, I'm not precisely sure what I'm looking for. Anyone with more sprinklerninja skills than I able to suggest anything I should be looking for?

I've come to the conclusion I need at least a minimal sprinkler for my front yard, and if part of the work is already done, no point in wasting it.