I happily have 3 children and live in a small growing town in the foothills of Mt. Rainier.
We moved this year, across town, and while we moved to a bigger home, our new-to-us home has more to offer. It is not a new home, but being newer than our old home, it has a few better things in how it was built.
I have never lived in a house with AC. Never. We chose the new house as it had more ventilation, it catches breezes better. The garage is also smaller and is insulated. Our property backs up to a protected green belt (a county rail to trail) and is lined with old growth trees. While our lot is big for in-town (13K sq ft), I came in this spring and put in all my native plants that I had lifted out of our old house. Once this year is past, I won't have to water them (they need to get reestablished this year). I grow native, I don't care about lawn (seriously, I am a fan of moss). I believe we must save water, but also make our yards welcoming to bees, birds and more. We NEED flowers. We need reasons for them to come. A big reason I loved this house was the yard. Behind the house, while ripping out Scotch Broom (invasive) this past weekend I saw 2 trees with bear claw markings. Woooooooh!
With our new home, I now drive even less. I barely drive at all now. I live with 1/2 mile of most shopping and can hop onto the trail for everything else - it goes through town.
On LED bulbs - Costco. We went LED years ago. In fact, when we moved, we pulled the CFL's out from the new place and put them in the old house, moving all our LED bulbs ;-)
So basically? Little driving, no A/C and heat doesn't kick on till it hits 64*. Green gardening, no pesticides or herbicides, native plants mostly. And that our water use is metered where we pay 4X the cost for outside than inside, well...you learn to watch how much you use.