The condo I live in has been spending too much on water and seems motivated to try some cheaper options to address this. We're in Colorado so zone 5b, hot sunny summers, cold winters. There are two large shared lawns with sprinklers that need to remain aesthetically like lawns. One is medium to high traffic with a lot of dogs, and the other larger one is very low traffic. There are several mature trees so there's a mix of light, but no really dark corners. They're turning to me for advice but my gardening expertise is basically everything but the lawn. Overseeding different species has been discussed, but I don't think we're ready to do more intensive methods like cutting out sod or spend a season solarizing.
I want to make sure we take advantage of this situation and I have been doing some research, but I don't want to share and bias people's recommendations. What prep steps and plant types would you suggest for our needs? Something other than overseeding? TY