Home Remodeling in Marysville

The median Marysville home was built in 1994

The Census Bureau's 2020-2024 American Community Survey counts 26,663 housing units in Marysville, and 9,896 of them, 37.1 percent, were built in 2000 or later. The median year built is 1994 for all homes and 1993 for owner-occupied ones. Seven in ten homes are single-family detached houses, and 69.4 percent are owner-occupied. In August 2026 the city's permit report listed 26 new residential building permits and 4 residential remodel permits.

Source: Census ACS 2020-2024, B25034 year structure built, Marysville

Flood risk peaks from November to February, slides on the east side into spring

Marysville's section of the 2020 Snohomish County Hazard Mitigation Plan rates the city's flood probability as high, with the greatest threat between November and February. It rates landslides as a medium probability, with residents on the east side of the city most exposed, from January into spring after the water table rises. The plan notes that human activity, including development and vegetation removal, plays a part in more than 80 percent of reported slides, so grading and clearing for an addition deserve care on a sloped lot.

Source: Snohomish County Hazard Mitigation Plan 2020, City of Marysville annex

Marysville allows two ADUs per lot, but no short-term rentals

Following state law House Bill 1337, Marysville allows two accessory dwelling units on any lot that meets the minimum lot size and setbacks. Each ADU can be 200 square feet at minimum and up to 1,000 square feet or half the house's floor area, whichever is greater, but never over 1,400 square feet. It can be 30 feet tall, needs one parking space, and must match the house's exterior materials, roof form and window proportions. Existing garages can be converted even if they do not meet today's setbacks. Short-term rentals are prohibited in Marysville.

Source: City of Marysville, Accessory Dwelling Unit Standards FAQ

How much does a remodel cost in Marysville, WA?

Seattle-metro owners, Marysville included, paid a median $5,000 for hired-out improvement projects in the Census Bureau's 2023 survey, with an average of $11,580. Full kitchens and baths cost far more. In May 2025 the median Seattle-area carpenter earned $36.74 an hour and electricians $48.93. The median Marysville home was worth $567,900 in the 2020-2024 Census survey.

Do I need a permit to remodel in Marysville?

For most work, yes. Marysville requires a permit to build, alter, repair, convert or demolish a structure unless the work is exempt. Exempt work includes sheds up to 120 square feet, fences up to 6 feet, painting and low decks. Exempt jobs can still need plumbing, electrical or mechanical permits, and every application is filed through the online Permit Portal.

How big can an ADU be in Marysville?

An ADU in Marysville can be from 200 square feet up to 1,000 square feet or half the house's floor area, whichever is greater, with an upper limit of 1,400 square feet. Two are allowed per lot. Each needs one parking space, can be 30 feet tall and must match the house's materials, roof form and windows.

Can I rent my Marysville ADU as a short-term rental?

No. Marysville currently prohibits short-term rental units, and its ADU guidance says ADUs cannot be used that way. State law does stop the city from requiring the owner to live on site, so an ADU can be rented long term. A detached ADU also cannot sit on axles or a chassis, which rules out a portable tiny home.

Does Marysville flood?

Marysville's section of the 2020 Snohomish County Hazard Mitigation Plan rates the city's flood probability as high, with the greatest threat from November through February. It rates landslides as medium, with the east side of the city most exposed from January into spring. Check your lot's flood map and slope before planning an addition or regrading.