I was at an open house yesterday for a new home in the Greenlake area. It was built with sustainability in mind with awesome energy-saving features like:

Rainwater Harvesting System Plumbed to Laundry and Toilets
Infiltration Raingarden Handles All Stormwater OnSite
In-Floor Radiant Heat with 4 Zones and Programmable Thermostats
High Efficiency Gas Boiler Fuels both Space Heating [...]