pete_c
Guru
I will absolutely be paying someone else to dig trenches. Beyond that, meh, it has everything to do with finding a contractor that actually knows WTF they're talking about. Which narrows the field drastically. So it'll probably end up being a mix of someone to do the design, someone cheap to dig the trenches and then I'll automate it.
Yeah; here the automation came afterwards. I just contracted a Rainbird irrigation installer and hung around the day of installation to oversee it paying the installers to install my PVC chases for stuff. Using it today for all my LV stuff. (probably some 20 more PVC chases from the house out to the edges of the property - $100 cash at the time and learning how to use one of those PVC installation machines. IE: paid the guys to teach me and had the extra PVC lines installed while playing. There were no berms at the time and it was still being planned. I was very impressed how fast they could run lines under sideways etc.
Funny too years later did the same thing except for a gas and oil facility (well compound / little city) and laying fiber along the peripheral edges of the facility and creating little streets with fiber runs everywhere. (in Peru). Sort of helped me relating to timeframes of implementations when I learned this stuff. (bigger toys to play with).
It might be easier to just hire an irrigation company; put in whatever is cheap (you can find controllers for $20 these days). Not sure if you will be able to find someone to trench and install PVC lines only. My neighbor tried to DIY it with folks that had no clue about irrigation line digging and had to redo his entire system some 3-4 times before it was right over 1-2 years. (kind of a costly endeavor).
Watching the connectivity pieces of solenoids to the controller. Funny cuz one person didn't have a clue about wiring. I did rewire everything and gave it some order. The automation wiring et al came in pieces and years after initial installation. Initially tried to modify / hack the Rainbird ESP controller; then just removed it and replaced it. Thinking at the time (early 2000's) it was around $4000 or so for 10 zones. Sister covered her stuff (on two acres) with 20 plus zones with a larger Rainbird ESP device and paid around the same price ($4000). She used a landscaping company that did irrigation stuff.
I did change the plumbing as the company wanted a short route to the external stuff and I have a configured utility section in the basement such that I had them route the plumbing that way. Same for the wiring taking a longer route from one side of the house to the opposite side of the house and into the garage.