The disqualification from special valuation shall be effective on the date the event that led to the disqualification occurs.

(1) If the owner gives notice to discontinue the special valuation, the owner shall specify in the notice the effective date of removal.

(2) In case of sale or transfer, the date of disqualification shall be the date of the instrument of conveyance.

(3) If removal is based on a board decision, the board shall determine the effective date of disqualification to be the date of any disqualifying change in the property or the owner's noncompliance with conditions established under RCW 84.26.050. If the board does not specify the date of such an occurrence, then the date of the board order shall be the effective date of disqualification.

(4) After the board has sent notice to the owner that it has determined that property is disqualified or after property has been sold and no notice of compliance has been signed, the owner shall not be deemed able to act in the good faith belief that the property is qualified. Until such time, if the owner was acting in the good faith belief that the property remained qualified, the effective date of the disqualification shall be suspended during the pendency of that good faith belief. When an owner raises a good faith belief at a board proceeding, the board may enter a finding as to when the owner's good faith belief ceased.