ESSB 5184
SignedSenate
Minimum parking requirements
Concerning minimum parking requirements.
How does a bill become law?
- Introduced: The bill is filed and assigned a number.
- Committee: A subject-matter committee holds hearings, takes public testimony, and decides whether to advance the bill.
- Floor Vote: The full chamber (House or Senate) debates and votes on the bill.
- Opposite Chamber: The bill repeats the committee and floor vote process in the other chamber.
- Governor: The Governor reviews the bill and decides whether to sign or veto it.
- Signed: The bill has been signed into law.
AI Analysis
This bill bans local governments from imposing excessive minimum parking requirements for new housing and commercial projects, especially near transit and for vulnerable populations. It sets statewide caps on parking per unit and creates exemptions to reduce housing costs and encourage transit use.
- Cities, code cities, and counties are prohibited from requiring more than 0.5 parking spaces per residential unit (cities/county) or 1 space per unit (code cities).
- Commercial developments face a cap of 1 parking space per 1,000 square feet of commercial space.
- No minimum parking requirements for affordable housing, senior housing, housing for people with disabilities, child care facilities, facilities that serve alcohol, residences under 1,200 square feet, commercial spaces under 5,000 square feet, and mixed-use commercial spaces.
- Cities with at least 10,000 residents in counties with over 100 people per square mile cannot require off-street parking for multifamily, middle housing, or accessory dwelling units within ½ mile of high-frequency transit (at least 4 trips/hour for 12+ hours/day).
- Existing rules for affordable, senior, and disability housing under RCW 36.70A.620 are updated to allow even lower parking minimums (e.g., 0.75 spaces per unit or none) when near high-frequency transit.
Who is affected
- Developers and builders — Developers and builders may face lower costs and fewer regulatory hurdles for certain types of housing and commercial projects, especially those in urban areas or serving vulnerable populations.
- Homebuyers and renters — Rental and homebuyers may benefit from lower housing prices due to reduced construction costs tied to parking requirements; renters in affordable, senior, or disability housing may see more units built.
- Urban and transit-adjacent residents — Residents in urban areas near transit may walk, bike, or use transit more often, reducing traffic and emissions; those in subsidized housing may gain access to more units.
- Local governments — Local governments (cities and counties) must revise zoning rules and may see changes in parking demand management strategies and revenue from parking fees.
- Vulnerable populations (seniors, people with disabilities, low-income households) — People with disabilities, seniors, and low-income households benefit from more accessible and affordable housing options and reduced barriers to housing development.
Pro/Con Analysis
Stronger case for benefits
Potential Benefits (5)
Reduces construction costs for developers of market-rate and affordable housing by eliminating costly parking mandates—especially impactful for middle housing and ADUs—potentially lowering rents and purchase prices for households earning 80% AMI or less.
HousingPeopleRef: Sec. 2(1), Sec. 3(1), Sec. 4(1), Sec. 5 (new text: 0.5–0.75 parking caps for multifamily/middle housing near transit)Expands supply of affordable, senior, and disability housing by removing parking minimums in high-opportunity locations near transit—directly benefiting vulnerable populations who face housing shortages and long waitlists.
HousingPeopleRef: Sec. 2(3)(d)-(f), Sec. 3(3)(d)-(f), Sec. 4(3)(d)-(f), Sec. 5(1)-(2)Encourages walking, biking, and transit use by reducing car dependency in dense urban cores—benefiting households without cars (often low-income, students, seniors) and reducing household transportation costs.
TransportationPeopleRef: Sec. 5 (new text: no off-street parking required for multifamily/middle/ADU within ½ mile of high-frequency transit in dense counties)Increases housing supply and affordability by reducing per-unit development costs—particularly for projects serving households at or below 60% AMI, who otherwise bear the highest rent-to-income ratios in the state.
HousingPeopleRef: Sec. 5 (amended RCW 36.70A.620, allowing 0.75 parking/unit for affordable housing near high-frequency transit)Reduces regulatory barriers for small commercial tenants and mixed-use developments, supporting micro-businesses and local retail—though benefits are modest relative to larger developers, this helps small operators remain viable in urban cores.
Business & EmploymentLean peopleRef: Sec. 2(3)(i), Sec. 3(3)(i), Sec. 4(3)(i)
Potential Concerns (5)
Reduces local governments’ ability to tailor parking requirements to neighborhood-specific conditions, potentially undermining efforts to manage on-street parking congestion and maintain neighborhood character in areas where parking demand exceeds supply—especially in older, lower-density urban fringe neighborhoods not near high-frequency transit.
HousingPeopleRef: Sec. 2(3)(d)-(f), Sec. 3(3)(d)-(f), Sec. 4(3)(d)-(f), Sec. 5(2)May increase on-street parking pressure in neighborhoods with limited street capacity or where high-frequency transit service is newly implemented but not yet matched with infrastructure improvements—potentially worsening congestion and safety for pedestrians and cyclists in older, lower-street-capacity areas.
TransportationPeopleRef: Sec. 5 (new text: 'Cities with at least 10,000 residents in counties with over 100 people per square mile may not require off-street parking for multifamily/middle/ADU within ½ mile of high-frequency transit')Exemptions for residences under 1,200 sq ft and commercial under 5,000 sq ft disproportionately benefit developers of small-market-rate housing and micro-businesses, but do not directly benefit low- or middle-income households—these exemptions are structural and apply regardless of income, while affordable housing exemptions are already well-established in law.
HousingPeopleRef: Sec. 2(3)(b), Sec. 3(3)(b), Sec. 4(3)(b)Maintains and expands use restrictions and covenant requirements for affordable/senior/disability housing, which can increase administrative burdens on nonprofit and community-based housing providers and may delay project timelines—though intended to preserve affordability, these requirements can constrain operational flexibility.
HousingLean peopleRef: Sec. 5 (amended RCW 36.70A.620, adding 'covenant' requirements for affordable/senior/disability housing)Leaves local governments with discretion to impose on-street parking requirements (e.g., permit-only zones, resident-only parking), which may disproportionately burden low-income and transit-dependent residents who lack access to off-street parking and rely on street parking near home.
Local GovernmentLean peopleRef: Sec. 5 (new text: 'Nothing in this section precludes a city from adopting maximum parking limits or requiring frontage improvements to provide on-street parking')
Who Is Most Affected
Low- and middle-income households benefit from lower housing costs and increased supply of affordable units near transit—especially in King, Pierce, and Snohomish counties where demand is high and parking costs are steep.
Seniors and people with disabilities benefit from increased access to accessible, affordable housing near transit and services—though some may face challenges if local governments shift to on-street permit-only zones.
Developers of market-rate and affordable housing benefit from reduced construction costs and faster permitting—especially those focused on infill, ADUs, and transit-adjacent projects.
Local governments face costs to update zoning codes and may lose parking fee revenue, but save on enforcement and gain long-term property tax revenue from increased housing supply—net effect is mixed but generally manageable.
Transit-dependent households (including those without cars) benefit from reduced transportation costs and improved access to jobs and services—but may face on-street parking competition in neighborhoods without off-street alternatives.