Building permits, zoning and land rules in Kitsap County, Washington

Kitsap County requires building permits for many projects under county jurisdiction in unincorporated areas, including residential and commercial additions, but some small projects are exempt¹. An agricultural structure is exempt only if it is no larger than 864 square feet, used exclusively for livestock, feed, or farm implements, at least 10 feet from the nearest structure, has no unpermitted heat or plumbing, is registered with DCD, and receives the exemption through the Permit Application Portal¹. Kitsap County Code Title 14 includes the residential and building codes plus local updates¹⁰. Every permitted project needs a final inspection to close the permit, and work cannot continue until the required inspection is approved¹¹. The owner-builder exemption concerns contractor registration only; it does not remove permits and does not cover work done to sell, demolish, or lease the property⁷.

Kitsap County's Department of Community Development (DCD) handles building permits, zoning, and land-use review for unincorporated Kitsap County¹². Reach DCD at (360) 337-5777 or Help@Kitsap1.com; Permit Technician assistance is available Monday through Thursday, 9 a.m. to noon¹². The office is at 619 Division St., 2nd Floor, Port Orchard, WA 98366, with lobby hours Monday through Friday, 9 a.m. to noon¹². New and existing permits go through the Online Permit Center, and inspections can be scheduled online, by phone, or by email with the permit number⁵. DCD requires inspections in the proper order, and work cannot continue until the required inspection is approved¹¹. Permit fees start with a non-refundable $90 base application fee plus a 3% technology surcharge, and then scale with building value¹³. Kitsap Public Health District, not DCD, administers on-site sewage permits, clearances, inspections, and maintenance³.

Yes. Kitsap County administers zoning for land in unincorporated Kitsap County; incorporated municipalities may administer separate rules². Rural Residential allows 1 dwelling unit per 5 acres, Rural Protection 1 per 10 acres, Rural Wooded 1 per 20 acres, and Forest Resource Lands 1 per 40 acres². Those figures are zoning densities, not a guarantee that a parcel can be divided or built on. Setbacks vary by zone and may be increased by shoreline, wetland, stream, geological, critical-area, or buffer requirements³. Height and lot-coverage limits depend on the parcel and project³. Newly created lots in the Suquamish rural village have a 21,780-square-foot minimum, but that district-specific rule is not a countywide minimum¹⁴. Parks for manufactured, mobile, RV, park-model or tiny homes are conditional, administrative conditional or unavailable depending on the zoning district, and potable water and sanitation must be approved by the health district¹⁵. Kitsap County separately regulates land division; ask DCD to identify the parcel's published zoning classification and site-specific standards before relying on acreage alone^2,16.

Kitsap Public Health District administers on-site sewage permits, building clearances, inspections, and maintenance in Kitsap County³. For a new system, the Building Site Application must be approved before the installation permit, and an approved design and certified installer are required⁴. On parcels served by onsite sewage, DCD may accept a preliminary application but cannot issue the building permit until the Health District accepts the building-site application or building clearance⁶. A connection permit is required for a qualifying new connection or a replacement structure that is disconnected and reconnected⁴. A new system must be inspected before cover, and a connection must remain uncovered until the Health District approves it; gravity systems are then inspected every three years, and alternative systems need at least annual inspection plus an annual maintenance contract⁴. Reach the district at 360-728-2007 or 345 6th Street, Bremerton, WA¹⁷. Only 6.3% of Kitsap County soil is rated free of severe limits for a conventional drain field, so make septic feasibility a purchase contingency¹⁸.

We could not confirm a county rule allowing long-term RV occupancy, temporary camping, or an individual tiny home on private land in unincorporated Kitsap County, so ask DCD about the parcel and proposed use before moving in¹². Washington defines a tiny house as no more than 400 square feet and allows one to be built on wheels, but the structure must meet the state building code and local foundation, installation, location, and permit requirements¹⁹. In the UR-5 zoning classification, a mobile home is permitted while a manufactured, mobile, RV, park-model, or tiny-home park requires an administrative conditional-use permit; other zones may differ⁸. Attached and detached accessory dwelling units are permitted in UR-5, but other zones may differ⁸. We could not confirm a countywide minimum dwelling size; take the structure, intended occupancy, and parcel zone to DCD¹².

1. Ask DCD to confirm the parcel's zoning, setbacks, height, lot coverage, and any land-division path^2,3,16.
2. Show how the property will receive water and handle sewage³.
3. Obtain the applicable Health District septic approval or sewer permit and building clearance⁶.
4. Apply through DCD's Online Permit Center unless DCD confirms the project is exempt^1,5.
5. Include driveway access in building review; ask about a stand-alone Road Approach Permit if access is needed first for utilities, septic, or a well⁹.
6. Request required inspections in order and keep approved plans and permit conditions available to inspectors^20,21.
7. Complete every associated permit and inspection, then obtain Occupancy Approval before using a home⁵.

Start with water, sewage, and legal access. Kitsap County requires a development proposal to show how the property will receive water and handle sewage³. Only 6.3% of county soil is rated free of severe limits for a conventional drain field, so make septic feasibility a purchase contingency¹⁸. A new driveway or significant change connecting to a public road requires county access review, and right-of-way work can require additional approvals⁹. About 70.5% of county land has a slope of 15% or less, while 64.6% is wooded, so parcel-level topography and clearing needs matter¹⁸. Washington requires a local floodplain-development permit for work on floodplain property, so ask DCD whether the parcel is affected^12,22. Before closing, have DCD confirm zoning, setbacks, height, lot coverage, and any proposed land division^2,3,16.