We are now installing an irrigation system in the front and backyard of our rental property. We will put it in a timer, so we can have a higher assurance that the trees and schrubs will be watered properly. The easiest place to install it is on the wall in the backyard, close to the valve. However, I was thinking about installing it on the side of the house, close to the power meter. If I install it on the side, I will have access to it without having to bother the tenants. I could probably adjust/check it more frequently.
If I install it in the backyard I would need to contact them before accessing the backyard.
PS: If I install it on the side, I would need to run more cable from the timer to the valve in the backyard.
PS2: If I install it on the backyard, this would give me an excuse to check on things every few months.