Concrete Services in Bothell
Bothell straddles King and Snohomish counties: about 7.24 square miles of the city lie in King County and 6.42 square miles in Snohomish County. Incorporated in 1909, it grew through post-war plats such as the Maywood Hill divisions, recorded between 1959 and 1962 and built mostly with ranch houses, and it roughly doubled in population and area when it annexed Canyon Park in 1992.
Concrete topics for Bothell homeowners
Popular Concrete Services in Bothell
Landslide ground in southwest Bothell
The city's hazard mitigation plan says landslides have been a significant problem in Bothell's southwest area, primarily south of SR 522 and west of I-405. On those slopes a new driveway or retaining wall is as much a drainage job as a concrete one, because runoff from new hard surface has to leave the site without soaking the hillside.
North Creek, the Sammamish River, and floodplains
Bothell sits at the downstream end of North Creek, where it joins the Sammamish River, and about 98 percent of the city drains to the Sammamish. Roughly 6.1 percent of the city's land is inside Special Flood Hazard Areas. Shoreline jurisdiction covers the Sammamish River, North Creek, and Swamp Creek, land within 200 feet of their ordinary high water mark, and their floodways, 100-year floodplains, and associated wetlands. One local stormwater rule stands out: projects within a quarter mile of the Sammamish River must infiltrate runoff to the extent feasible before it reaches the river.
Permits in Bothell
The Permit Center, part of Community Development at City Hall, accepts all permit and land use applications online only, through MyBuildingPermit. Work in the public right-of-way needs a Right-of-Way invasion permit. Driveway approaches are one of the listed examples, and new driveways and sidewalk cuts count as major work, which requires a performance bond for 120 percent of the cost estimate ($1,000 minimum), a $1,000,000 certificate of insurance naming the City, a state contractor's license, and a City of Bothell business license. A cut in a street paved within the past five years needs approval from the Director of Public Works or a designee.
Behind the property line, Bothell exempts residential driveways and sidewalks no more than 30 inches above grade and not over a basement, plus excavation under 50 cubic yards that is less than two feet deep. Retaining walls over four feet, measured from the bottom of the footing to the top of the wall, or walls supporting a surcharge need a permit. Drainage review follows the 2021 King County Surface Water Design Manual as amended by Bothell, and a new single-family home permit needs a Technical Information Report when it adds more than 5,000 square feet of impervious surface.
Bothell concrete FAQs
Do I need a permit to replace a driveway approach in Bothell?
Yes. Bothell requires a Right-of-Way invasion permit for any project that involves work in the public right-of-way and lists driveway approaches as an example. New driveways and sidewalk cuts are treated as major work, which carries a performance bond for 120 percent of the cost estimate, and a Job Start inspection must be scheduled before work begins.
When does a retaining wall need a permit in Bothell?
A retaining wall over four feet tall, measured from the bottom of the footing to the top of the wall, needs a permit, and so does a shorter wall that supports a surcharge. The design must follow the city's standard rockery detail, show compliance with the IRC, IBC, or another prescriptive method, or carry a licensed engineer's or architect's stamp.
Does it matter which county my Bothell home is in?
Not for city permits. Bothell straddles King and Snohomish counties, with about 7.24 square miles in King County and 6.42 in Snohomish County; the city's Permit Center takes every application online.
Nearby service areas
We also pour, repair, and replace concrete in the communities around Bothell:
Call (206) 552-9998 for a free on-site estimate in Bothell, from Canyon Park to the Sammamish River valley.
