The Growth Management Act.
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The Growth Management Act (GMA) requires that certain counties, and the cities within those counties, engage in planning for future population growth.? Whether a county is required to plan or not was determined by its population and population growth as of 1995, its population growth after 1995, or its choice to become subject to the requirements of the GMA.? Currently, 28 counties fully plan under the GMA and 11 do not.? The centerpiece of the planning process is the comprehensive plan.? The city or county (local government) must adopt development regulations to implement the comprehensive plan.
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An urban growth area is an area in which there is such intensive use of the land for buildings, structures, and impermeable surfaces that the land cannot be used primarily for agriculture, natural resources, or for rural uses.? Within a designated urban growth area, urban growth must be encouraged, while outside of a designated urban growth area, such growth must be prohibited.? Counties planning under the GMA are required to designate urban growth areas, and each city within such a county must be included in an urban growth area.
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Building Permits and the State Building Code.
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Before developing land, a developer must obtain permits from the local government with jurisdiction over the land allowing the development.? Once such permit is a building permit.? Building permits are required to ensure that a development is compliant with the applicable building code.? The State Building Code (Code) is adopted by the State Building Code Council (Council).? The Code consists of the State Energy Code, model codes adopted by reference, as well as any amendments made to the model codes by the Council.? The model codes are the International Building Code, the International Residential Code, the International Mechanical Code, the International Fire Code, the Uniform Plumbing Code Standards, and portions of the International Wildland Urban Interface Code.? The Code is updated on a three-year cycle, following the update cycle of the model codes.
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Local governments may also adopt local amendments to the Code, though the amendments cannot diminish the minimum performance standards required by the Code, and local governments cannot increase energy efficiency requirements for residences beyond what is required in the Code.
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Accessory Dwelling Units.
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Accessory dwelling units (ADUs) are independent residential living units that are attached to, or located on, the same lot as a principle dwelling unit.? Accessory dwelling units can be either attached or detached. ?An attached ADU is physically connected to a principle unit, while a detached ADU is not.
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Local governments planning under the GMA must allow at least two ADUs, in any configuration of attached and detached, in all zoning districts within an urban growth area that allow for the development of single-family homes, and must allow at least one ADU on any lot that meets the minimum lot size required for the principle unit.
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Registered Architects.
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In order to practice architecture in Washington, an architect must be registered in the state.? In order to qualify for registration, an architect must meet education or work experience and training requirements, and must pass an examination.? Registrations are renewed every two years, upon the completion of professional development requirements and the payment of a fee.
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Self-Certification and Third-Party Review Programs.
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Some cities and states, including New York City, the City of Chicago, the City of Phoenix, and New Jersey, have adopted programs that allow design professionals, usually professional or structural engineers and registered architects, to self-certify that an application for a building permit is in compliance with the applicable building code.? Each jurisdiction's program is somewhat different, but generally, under a self-certification system, a jurisdiction only checks a self-certified application to ensure that it is complete and that the required documents are present.? If they are, then the jurisdiction will issue the permit without further review.? Under each program, some percentage of applications are randomly audited, and some jurisdictions can also decide to audit particular applications.? Most jurisdictions also require that the permit applicant or owner agree to hold the jurisdiction harmless for any issues arising from the permit application.
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There are differences between the programs, including which projects are eligible for self-certification.? In Phoenix, for example, all new buildings, with some limited exceptions for high-rises and hazardous projects, are eligible.? In New Jersey, projects must be under a certain square footage in order to be eligible, with the applicable square footage different for each category of building.? In Phoenix and Chicago, some projects require peer review in addition to self-certification.
In Washington, Grant County offers a somewhat similar program in which a third-party design professional can review certain residential building permit applications in lieu of county review.? The program is seasonal, and only operates when the county determines that it cannot manage the permitting workload.
Cities planning under the GMA may operate self-certification programs for the construction or development of detached ADUs on residential properties.? If a permit application has been self-certified as required by the program, then, after determining that the application is complete, the city may consider the application to be in compliance with applicable Code requirements, as well as with local building, electric, plumbing, mechanical, and fire code requirements.? Only registered architects may participate in a self-certification program.? A permit issued pursuant to a self-certification program has the same effect as a permit issued after a full project review.
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The Department of Commerce (Department) must adopt rules for self-certification programs.? The rules must include, at a minimum:
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The Department must create a standardized self-certification program form that cities may optionally use as part of their program.? The form must include:
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Cities operating self-certification programs must report any penalties imposed for failed audits to the Department, and the Department must maintain a database available to cities of architects that are currently subject to penalties.? Cities may not accept a self-certified application from an architect who is subject to penalties because of a failed audit in another city.? The Department must provide for administrative hearing procedures to resolve any disputes over audit results and penalties.
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A city operating a self-certification program must submit an annual report to the Department on the program.? The report must include the number of self-certification applications received, the number of permits issued through the self-certification program, and the average length of time that it took for a project permit to be issued on a detached ADU application for self-certified permit applications and non-self-certified permit applications.? The Department must summarize the information that it receives from cities in an annual report posted on its website.
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Self-certification and similar programs operated by local governments prior to July 26, 2025, may continue to operate outside of the requirements otherwise applicable to self-certification programs.