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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Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer LIBOR Warning: Neither BBA Enterprises Limited, nor the BBA LIBOR Contributor Banks, nor Reuters, can be held liable for any irregularity or inaccuracy of BBA LIBOR. Disclaimer. Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.