Good to know
How do I apply for a building permit in Humboldt or Trinity County?
The Humboldt County building department covers all of unincorporated Humboldt County. It does not cover the cities of Eureka, Arcata, Trinidad, Rio Dell, Fortuna, Ferndale or Blue Lake. Since July 5, 2023, the county's Building Division has required new permit applications to be submitted digitally.
The detail
Sources
- Humboldt County: Building Inspection Department
- Humboldt County: Planning and Building Department, About Us
- Humboldt County: Planning & Building
- City of Eureka: Building
- Trinity County: 2022 Regional Transportation Plan, Negative Declaration (PDF)
- Trinity County: Building Permit Application (Community Development, Building Division)
- Trinity County: Building Division
- Humboldt County: First Time Applying for a Building Permit
| Topic | Fact |
|---|---|
| Humboldt County's building department | The Humboldt County building department covers all of unincorporated Humboldt County. It does not cover the cities of Eureka, Arcata, Trinidad, Rio Dell, Fortuna, Ferndale or Blue Lake. |
| Humboldt County applications | Since July 5, 2023, the county's Building Division has required new permit applications to be submitted digitally. |
| Humboldt County front counter | The Planning and Building Department's front counter is open 8:30 a.m. to 2:00 p.m., Monday through Thursday. |
| City of Eureka | Inside the City of Eureka, the city's own Building Division regulates construction, and building permit applications go through its online permitting platform, OpenGov. |
| Trinity County office | In Trinity County, building permits come from the county's Community Development Department, Building Division, 61 Airport Road, Weaverville. |
| Trinity County hours | Trinity County's Building Division is open 8 a.m. to 2 p.m., Monday through Thursday, with Fridays by appointment only. |
| Trinity County plan approval | Trinity County's permit form says plan approval can take up to six weeks after a complete submittal. |
Unincorporated Humboldt County
The Humboldt County building department covers all of unincorporated Humboldt County. It does not cover the cities of Eureka, Arcata, Trinidad, Rio Dell, Fortuna, Ferndale or Blue Lake.
The county's Planning and Building Department is at 3015 H Street, Eureka.
Since July 5, 2023, the county's Building Division has required new permit applications to be submitted digitally.
The Planning and Building Department's front counter is open 8:30 a.m. to 2:00 p.m., Monday through Thursday.
Sources: Humboldt County: Building Inspection Department; Humboldt County: Planning and Building Department, About Us; Humboldt County: Planning & Building
Inside the City of Eureka
Inside the City of Eureka, the city's own Building Division regulates construction, and building permit applications go through its online permitting platform, OpenGov.
Source: City of Eureka: Building
Trinity County
There are no incorporated cities or towns in Trinity County; the county's regional transportation plan names Hayfork, Lewiston and Weaverville as its largest communities.
In Trinity County, building permits come from the county's Community Development Department, Building Division, 61 Airport Road, Weaverville.
Trinity County's building permit application lists what to submit with it.
Trinity County's permit form says plan approval can take up to six weeks after a complete submittal.
Trinity County's Building Division is open 8 a.m. to 2 p.m., Monday through Thursday, with Fridays by appointment only.
Sources: Trinity County: 2022 Regional Transportation Plan, Negative Declaration (PDF); Trinity County: Building Permit Application (Community Development, Building Division); Trinity County: Building Division
Work that needs no permit
The county says the work that does not need a building permit is described in Humboldt County Code §331-11(a)(4) and California Building Code §105.2.
Source: Humboldt County: First Time Applying for a Building Permit
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