*Referrer must be a current Polygon homeowner. Valid at Washington state communities only. Referee must inform Sales Associate that they were referred and who referred them during first visit to Sales Center. In addition, the purchase and sale agreement and the homeowner survey must state that the buyer was referred and by whom. Offer may be modified or terminated without notice. Referrers and referees must complete an IRS form W-9 prior to receiving ‘Thank You’ check.