Installed completely new irrigation system (sprinklers and drip zone) in the back yard, as well as sod once the system was in. Some communication gaps in the quoted area (it was a mostly dirt lot... so understandable) and ended up with one sprinkler zone instead of two. This was similar to another quote I'd received (one reason I went with this company was two zones, which I thought was needed) - but so far it's ok - I did struggle a bit in later season with some grass dying off, but it's not matched to zone coverage so I don't think it's the pattern. I did learn you can use a demo hammer to trench in AZ soils!
Note on the drip systems: They do commercial-style zones with PVC leading to drip stations, each with a 6 emitter manifold. This is very nice and worked really well when I did the drip plumbing later, plus seems much more durable in the long run than 5/8 poly supply. But we did not have the station locations mapped in advance and some ended up in different places that I would have preferred... and our landscape designer friend was a little irritated. Lesson learned... it's always in the planning. Still, i think it's worked out ok.
Later came back and expanded the system in the side yard for some more plants and a raised garden bed. Had a bobble on this one where the new zones were obviously not tested as they were hooked into abandoned piping. Whoops! But the owner took care of it quickly.. so I'm happy and I do appreciate when folks make it right.