You are going to have to state the geographical location to get useful advice.

The shrubs along the back seem to be much too close to the fence. They should be far enough from the fence so they don't touch it when they are mature.

Lawns are the biggest water users in the landscape but if you really want one buffalo grass uses less than traditional turf or clover. decomposed granite would be another option and doesn't need much by way of care.

California has a lot of great native shrubs and trees like lemonade berry, catalina cherry, coastal live oak and the lovely manzanitas. They are great low water use plants and you have a lot to choose from.