CITIES AND TOWNS ‑- LOCAL IMPROVEMENTS ‑- VOLUNTARY CONTRIBUTION BY CITY INCLUDED IN DETERMINING TOTAL COST OF PROJECT In determining whether or not the owners of property subject to at least sixty percent of the cost of a proposed local improvement have protested the improvement, a city must, under RCW 35.43.180, include as a part of the total cost whatever amount of money the city voluntarily contributes thereto.