Here's how these homeowners got a little more eco-friendly.
Downsizing their energy bills
Downsizing their energy bills
Paul Kennedy and Teresa Kennedy, 40 and 33

Austin, Texas

The Kennedys are downsizing from a 3,600-square-foot spread to a custom-built, totally green 2,400-square-foot contemporary house, in hopes of keeping a tighter lid on energy and water bills. "We're spending money to heat and cool space we don't use," says Paul.

It will be made with a 10-inch-thick energy-efficient insulated concrete wall and topped with an insulated metal roof. The couple will draw water from a collection tank that filters rain, and reuse it for irrigation. Ground broke in December; the house is expected to be complete in August.

How much extra it cost: $12 a square foot, but Paul says he "expects to save money in the long term."

Would going green work for you?

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Most stock quote data provided by BATS. Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer. Morningstar: © 2018 Morningstar, Inc. All Rights Reserved. Factset: FactSet Research Systems Inc. 2018. All rights reserved. Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor's Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2018 and/or its affiliates.