The way people buy and sell homes in the U.S. may be about to change, following a landmark settlement proposed by the nation’s top real-estate-industry group. But that may not make things easy for home buyers, one mortgage-company CEO says. The settlement proposed by the National Association of Realtors, which will go into effect in mid-July if it’s approved, would require that listings on the NAR-run Multiple Listing Service — a database of homes for sale — no longer have a field showing how much buyer’s agents will earn in commissions on the sale. In other words, buyer’s agents won’t...