Walla Walla, WA, Municipal Code
Updated June 2021
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https://www.codepublishing.com/WA/WallaWalla
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Accessory Dwelling Units
The city's zoning code permits one internal, attached, or detached accessory dwelling unit (ADU) by right for any legal single-family home or duplex (§20.118.030). Use-specific standards address maximum size, building permits, and entrances.
Housing Supply Planning
The city's zoning code encourages increasing housing supply and affordable options for all by permitting one internal, attached, or detached accessory dwelling unit (ADU) by right for any legal single-family home or duplex (§20.118.030). The code also permits a wide range of "missing middle" housing types, including duplexes, triplexes, fourplexes, and cottage housing.
Residential Infill Development | Zoning Reform and Code Writing
The city's zoning code permits a wide range of "missing middle" housing types by right in its lowest density residential district (§20.100.040.F). These types include duplexes, triplexes, fourplexes, and cottage housing.
Walla Walla, WA
2010 Population: 31,731
2010 Population Density: 2,478.02/square mile