Lewis County, WA Zoning Overlays & Bonuses: Density Bonus Law (2026)

210 creates an affordable-housing density bonus for the Small Town Urban Growth Areas surrounding Packwood and Onalaska in unincorporated Lewis County. A development qualifies once 30 percent of its dwelling units are committed as long-term units affordable at or below 80 percent of area median income for Lewis County. Qualifying projects can choose one of two bonuses: a 25 percent increase in the total number of residential dwelling units, rounded down to the nearest whole number, or a 30 percent increase in total commercial square footage, also rounded down.

25 units) rounds down to six bonus units for a total of 31; a 10,000-square-foot commercial component earns a 3,000-square-foot bonus for a 13,000-square-foot allotment. 17, which the code says exists to regulate special and accessory uses and supplementary controls across the Small Town UGA districts. Because the bonus is tied to the 80 percent AMI affordability commitment, Lewis County Community Development would confirm the long-term affordability restriction before approving the additional density or square footage at building permit or site plan review. The provision was adopted by Ord. 1367 (Exh. C) in 2025.