Automatic Irrigation System in IP?

Hi all,

I recently purchased a regional IP and a mate who works in the Irrigation industry (and also does landscaping), says he can install one for about $500 - $1000. A simple, automatic turn on, automatic turn off jobby - basically so the tenants don't need to do anything - the garden watering is basically taken care of.

The backyard currently is just a bucket of weeds, with occasional patches of grass, but I plan to do a bit of simple landscaping to bring it up to scratch. Also to improve the look for a valuation.

Does this sound like overkill?