I recently heard this question raised on a television program and was surprised at the answer--it's your toilets! If you have clients who are remodeling a luxury property, who are building, or are committed to keeping our environment "green," a good choice are the "duo toilets" that are popular in Europe.
The way they work is that they have two buttons--one for a full flush and one for a half flush. In the U.S., the maximum amount of water that a new toilet can use is 1.6 gallons. The low setting only uses .8 gallons. These toilets are not available at places like Home Depot or Lowe's--you'll have to go to a plumbing supply. Neverthless, they're a great way to upgrade as well as to conserve water, especially in those areas that are being hard hit with a drought.
Posted by Bernice Ross, www.ListenandLearnRealEstate.com, a library of over 85 real estate training podcasts for less than $1.00 per day. If you want the best real estate training in the business, visit us at www.RealEstateCoach.com. No long term contracts--join for one month and see for yourself!