Welcome to living in a DR Horton development. Our sprinkler system was installed incorrectly by the developer (areas of no coverage), and it was impossible to keep it green in the summer despite a $300-400 water bill each month. No above ground sprinklers, or modifications to the developer installed system allowed. On top of the 75% living material requirement, there are diagrams of where the plants/grass must be placed, so no chance of changing the layout to help out with areas the sprinkler doesn't cover. The house was a corner lot across from an "open space" field of weeds. Afforded us beautiful views of the mountains, but just try keeping the weeds out of your lawn. The HOA came around every Tuesday morning to inspect the development. We ended up selling the house. Life's too short.