Before You Build in Marysville, WA: Permit & Rule Checklist (2026)
Everything you need to know before starting a home improvement project
Building a fence, installing a pool, or adding a shed? Each project has its own set of local permits and rules in Marysville. This guide consolidates fence, pool, ADU, shed, fire pit, and landscaping regulations into one checklist so you know what to expect before you start.
Quick Permit Checklist
At-a-glance overview of permit categories in Marysville. Click any card for details.
Fences & Walls
1 rule on file
Swimming Pools
1 rule on file
ADUs & Granny Flats
2 rules on file
Sheds & Outbuildings
1 rule on file
Fire Pits & Outdoor Structures
2 rules on file
Landscaping & Tree Removal
1 rule on file
Fences & Walls
Some RestrictionsHeight limits, materials, permits, and shared fence rules.
Height Limits
Some RestrictionsFence height limits in Marysville are set under MMC §27-804. No fence in a required front yard may exceed 4 ft. No fence in a required side or rear yard may exceed 6 ft. Architectural features (trellises, lattice) may be added to the top of side/rear fences within applicable standards.
Swimming Pools
Heavy RestrictionsPool permits, safety fencing, and drainage requirements.
Fencing Requirements
Heavy RestrictionsMarysville adopts the 2021 International Residential Code through MMC 16.04.020, including Appendix AG (Swimming Pools, Spas and Hot Tubs), which is not excluded under MMC 16.04.030. Residential pool barriers must be at least 48 inches high with self-closing, self-latching gates. State-regulated public pools must comply with WAC 246-260 (limited use 60 inches, general use 72 inches).
ADUs & Granny Flats
Some RestrictionsAccessory dwelling unit rules and garage conversion permits.
Garage Conversions
Some RestrictionsGarage conversions to habitable space or ADUs require a building permit under WAC 51-50 and MMC. HB 1337 (2023) facilitates conversions to ADUs, allowing conversions even from existing structures that violate current setback or lot coverage rules. Contact the permit office for guidance.
ADU Rules
Some RestrictionsMarysville City Council adopted an interim ordinance on June 23, 2024, to comply with state HB 1337, allowing up to 2 ADUs per single-family lot. Final regulations are expected in fall 2025. HB 1337 requires: min. 1,000 sq ft ADU; 24 ft height minimum; no owner-occupancy required; impact fees capped at 50% of principal unit. Building permit required.
Sheds & Outbuildings
Some RestrictionsShed permits, setback limits, and outbuilding size rules.
Shed Rules
Some RestrictionsSheds and detached accessory structures must comply with MMC Ch. 22C.180 (Accessory Structures) and the Washington State Building Code (WAC 51-50). Permit requirements depend on size; small structures may be exempt from a full building permit but must still meet setback requirements. Contact the Permit Portal.
Fire Pits & Outdoor Structures
Heavy RestrictionsFire pit placement, outdoor burning restrictions, and permits.
Outdoor Burning
Heavy RestrictionsOutdoor burning is prohibited at all times within Marysville city limits. Marysville is a designated no-burn city under the Puget Sound Clean Air Agency and county guidelines. Burning garbage is never allowed. Yard debris burning is banned within the urban growth area. Recreational fires in fire pits ≤3 ft diameter and ≤2 ft high are allowed for cooking or pleasure.
Fire Pit Rules
Some RestrictionsRecreational fires in Marysville follow Puget Sound Clean Air Agency standards and North County Fire EMS rules. Fires must be small, attended, in a noncombustible container, at least 25 feet from structures, using only dry wood. Prohibited during burn bans.
Landscaping & Tree Removal
Some RestrictionsTree removal permits, heritage tree protections, and water rules.
Tree Removal & Heritage Trees
Some RestrictionsTree removal in Marysville is regulated under MMC zoning and critical areas provisions. Development-related tree removal typically requires a permit. Street trees require Public Works authorization. Contact Community Development for site-specific requirements.
General Permit Tips
When do you typically need a permit?
Most cities require permits for structural work, including fences over a certain height, pools, ADUs, and sheds above a size threshold. Even projects that seem minor can trigger permit requirements, so it is always best to check first.
How to apply for a building permit
Visit your local building department or their website. Most jurisdictions accept online applications. You will typically need a site plan, project description, and may need contractor information. Processing times vary from same-day for simple projects to several weeks for larger builds.
Common permit violations to avoid
Building without a permit, exceeding approved dimensions, and ignoring setback requirements are the most common violations. Penalties can include fines, required removal of the structure, and complications when selling your home.
Permit Guides for Nearby Cities
Looking for rules beyond permits? View all ordinances we track for Marysville.