PHOTO:  National Association of Realtors

Starting next year, real estate agents can’t shop a home outside the multiple listing service, a practice that has frustrated buyers in tight inventory markets like metro Denver.

By a 729 to 70 vote, directors at the National Association of Realtors voted Monday to ban anyone using a multiple listing service or MLS, which are largely controlled by local Realtor associations, from publicly marketing a home without listing it first.

“This has been brewing for some time and it has finally come to a head,” said Greg Zadel, a Firestone Realtor who was chairman of the committee that recommended the ban to the NAR board.

Listing agents who use the MLS, pretty much anyone who wants to survive in the business, will have one day to list a home that they publicly market outside their own brokerage.