HB 1153
In CommitteeHouse
Urban forest management
Concerning urban forest management ordinances.
This status may be delayed. See Action History below for the latest updates.
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 provides Washington’s local governments with new tools—especially 'tree bank' programs and developer incentives—to balance urban tree protection with housing development. It requires the Department of Natural Resources to create voluntary model rules and ordinances that help cities and counties plant trees where they’re most needed while allowing flexibility for housing construction, especially middle housing and ADUs. The bill also creates a grant program to support implementation, pending funding.
- Creates a new legal definition of 'tree bank' and authorizes local governments to use them as a tool to offset tree removals during development by planting trees elsewhere—especially in areas with greater need.
- Requires the Department of Natural Resources to develop voluntary model urban forestry ordinances and management plans that include guidance on tree banks, critical tree protection, and developer incentives (e.g., density bonuses, reduced setbacks).
- Adds new criteria for protecting 'critical trees'—those deemed significant due to size, environmental impact, or community value—and prohibits local rules from requiring retention of such trees if it would prevent middle housing, accessory dwelling units, or reasonable access/utility connections.
- Establishes a grant program (subject to funding) for cities and counties that adopt the model ordinances, especially those including tree bank programs and tree-retention incentives; priority for larger cities requires adoption of at least one incentive.
- Directs the Department of Natural Resources to use best available science to set tree planting ratios, species selection, and maintenance guidance—including cost estimates and alternative funding mechanisms (e.g., fees)—for tree bank programs.
- Requires local urban forestry plans and ordinances to prioritize planting in areas identified as priority regions or highly impacted communities, and to include strategies for protecting vulnerable populations through community engagement.
Who is affected
- Local governments (cities and counties) — Cities and counties may adopt new or updated urban forestry rules, including tree bank programs and developer incentives, with state support; those with populations over 75,000 must adopt at least one tree-retention incentive to qualify for state grants.
- Developers and real estate developers — Developers may benefit from new flexibility to remove certain trees during development if they contribute to tree banks or meet tree-retention goals, potentially through density bonuses or reduced requirements.
- Residents of underserved urban neighborhoods — Residents in areas with historically low tree canopy—especially those facing environmental inequity, heat islands, or health disparities—may benefit from targeted tree planting and improved air quality, stormwater management, and mental/physical health outcomes.
- Federally recognized tribes — Tribal governments with lands in Washington may use the state’s model tools and ordinances to support their own urban forestry efforts, especially in urbanized tribal lands or near reservation boundaries.
Pro/Con Analysis
Stronger case for benefits
Potential Benefits (5)
The legal definition and authorization of 'tree banks'—especially when located in 'priority regions' and 'highly impacted communities'—creates a mechanism to redirect tree planting to areas with the greatest need (e.g., heat islands, low canopy), potentially improving air quality, reducing heat-related illness, and supporting environmental justice in historically underserved neighborhoods.
EnvironmentPeopleRef: Sec. 2(6)(a) & Sec. 3(6)(b)The grant program (if funded) provides critical financial and technical support for local governments—especially smaller or cash-strapped cities and counties—to implement tree bank programs, including cost estimates and alternative funding mechanisms (e.g., fees), reducing barriers to adoption and improving program sustainability.
Local GovernmentPeopleRef: Sec. 3(7)(a) & Sec. 3(6)(e)(ii)By explicitly prohibiting local rules from requiring retention of critical trees if they prevent middle housing, ADUs, or access/utility connections, the bill removes a key regulatory barrier to housing supply—particularly for ADUs, which are often blocked by tree-retention requirements in single-family zones.
HousingPeopleRef: Sec. 3(6)(g) & Sec. 2(6)(c)(ii)The requirement that large cities (pop. >75,000) adopt at least one developer incentive (e.g., density bonus) to qualify for grants creates a structural nudge to align housing goals with tree retention—potentially encouraging more balanced outcomes where developers voluntarily preserve trees in exchange for increased development rights.
Business & EmploymentPeopleRef: Sec. 3(6)(h)(i)-(iv) & Sec. 2(6)(c)(ii)Mandating that tree banks be placed in areas suffering from erosion, flooding, air/water pollution, or the urban heat island effect—while also requiring outreach to vulnerable populations—targets environmental benefits to communities most at risk from climate hazards and health disparities, improving resilience and equity.
Public SafetyPeopleRef: Sec. 3(6)(b) & Sec. 3(11)
Potential Concerns (5)
The bill’s prohibition on requiring retention of 'critical trees' if retention would reduce housing density, prevent middle housing/ADU construction, or block access/utility connections may weaken tree protection by allowing developers to bypass tree retention requirements simply by claiming a housing need—potentially leading to net tree loss in high-demand areas where development pressure is greatest.
Business & EmploymentRef: Sec. 2(6)(c)(i) & Sec. 3(6)(f)While the bill authorizes developer incentives like density bonuses, the actual implementation depends on local adoption—and many jurisdictions may lack capacity or political will to use them effectively. Without strong enforcement or baseline tree protection, these incentives may primarily facilitate more housing without meaningful tree offset, especially in jurisdictions that already prioritize development over conservation.
HousingRef: Sec. 3(6)(h)(i)-(iv) & Sec. 2(6)(c)(ii)The grant program is contingent on specific legislative appropriation by June 30, 2025—and if unfunded, the entire framework (including tree bank programs and incentives) becomes void. This creates uncertainty for local governments, especially smaller ones that rely on state funding to implement complex urban forestry programs, potentially deepening disparities between wealthy and resource-poor jurisdictions.
Local GovernmentPeopleRef: Sec. 3(7)(a)-(b) & Sec. 4By allowing local governments to forgo retention of 'critical trees' if they interfere with housing, the bill risks prioritizing short-term development over long-term ecological benefits—especially carbon sequestration, stormwater management, and habitat connectivity—since 'critical' is defined only by local designation and not by objective ecological thresholds.
EnvironmentPeopleRef: Sec. 3(6)(f) & Sec. 2(6)(c)(ii)The bill’s developer-friendly provisions (e.g., allowing tree removal to enable ADUs or middle housing) may disproportionately benefit large developers who can absorb tree-removal costs or restructure projects to meet housing goals, while small developers and community land trusts may lack the resources to navigate the new incentive framework—potentially accelerating displacement in gentrifying neighborhoods.
HousingPeopleRef: Sec. 3(6)(h)(ii)-(iii) & Sec. 2(6)(c)(ii)
Who Is Most Affected
Smaller cities and counties (pop. <75,000) may benefit from state grants and model tools but lack staff capacity to implement tree bank programs effectively; those in rural-urban fringe areas may prioritize housing over trees, while inner-ring suburbs may struggle to balance canopy goals with density mandates.
Large developers (especially those focused on multifamily or ADU projects) stand to gain from density bonuses and relaxed tree-retention rules, while smaller developers and community land trusts may lack resources to navigate the incentive framework—potentially accelerating consolidation in the housing market.
Residents in low-canopy, high-heat neighborhoods stand to gain from targeted tree planting in tree banks, but may see little benefit if local governments opt out of adoption or if grants are unfunded—especially in jurisdictions where development pressure outweighs environmental advocacy.
Tribal governments may benefit from the model tools and voluntary adoption framework, but only if they have the capacity to integrate them into existing urban forestry efforts—particularly on tribal lands near urban centers or in co-management zones.
Existing urban tree advocates and environmental nonprofits may see progress in environmental justice goals but could oppose the weakening of mandatory tree-retention rules, especially where 'critical trees' are defined solely by local discretion rather than ecological significance.