Title III — Land Use and Development
Humboldt County Municipal Code Part 1 Principal Zones
Humboldt County Municipal Code · 2026-10 edition · updated 2026-10-22 · Humboldt County
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Cite as: Humboldt County Municipal Code Part 1 · Text as of 2026-10-22
2.5 Acres¶
Minimum Lot Size 2.5 Acres or Greater Front Twenty feet (20') Twenty feet (20'); Thirty feet (30') for flag lots Rear Ten feet (10') Thirty feet (30') Interior Side Five feet (5') Thirty feet (30') Exterior Side Twenty feet (20') Twenty feet (20') Flag Lots For Flag Lots, the Director, in consultation with the Public Works Department, shall establish the minimum yard that is required for a vehicular turnaround on the lot. For Flag Lots, the Director, in consultation with the Public Works Department, shall establish the minimum yard that is required for a vehicular turnaround on the lot. Double Frontage Lots Front and rear yards shall be twenty feet (20'), except that the rear yard setback may be reduced to ten feet (10') where such yard abuts an alley. Front and rear yards shall be twenty feet (20'), except that the rear yard setback may be reduced to ten feet (10') where such yard abuts an alley. Maximum Ground Coverage Thirty-five percent (35%) Maximum Structure Height Thirty-five feet (35'). Permitted Main Building Types Residential Single Detached Ancillary Residential Limited Mixed Residential - Nonresidential Nonresidential Detached or Multiple/Group
*** Note: Setbacks may be modified by other provisions of this Code or State law. For example, see Section 313-30: “Alquist-Priolo Fault Hazard” and the “Fire Safe Regulations” at Title III, Division 11. (Former Section CZ#A313-17(A-C); amended by Ord. 1853, 12/20/88) (Ord. 2717, § 11, 6/27/2023; Ord. 2733, § 7, 3/ 5/2024) 313-7 Resource Use Regulations 313-7.1 AE: Agriculture Exclusive Principal Permitted Use Agriculture Exclusive Principal Permitted Use (See Section 313-163.1.9 for description) Use Type Conditionally Permitted Use Residential Use Types Guest House Farm Employee Housing Labor Camp Second Agriculture or Commercial Timber Production Residence (on a lot less than sixty acres (60a) in size) Single Family Residential (a Use Permit is required on a lot less than sixty acres (60a) in size for a second single detached dwelling other than an Accessory Dwelling Unit) Civic Use Types Essential Services Solid Waste Disposal; subject to the Solid Waste Disposal Regulations Oil and Gas Pipelines; subject to the Oil and Gas Pipelines Regulations Major Electrical Distribution Lines; subject to the Electrical Distribution Lines Regulations Minor Generation and Distribution Facilities Industrial Use Types* Aquaculture, allowed within non-prime agricultural lands only Cottage Industry; subject to the Cottage Industry Regulations
313-7.1 AE: Agriculture Exclusive Agricultural Use Types Hog Farming Feed Lots/Slaughter House Kennels Agriculture-Related Recreation Intensive Agriculture Extractive Use Types Oil and Gas Drilling and Processing; subject to the Oil and Gas Drilling and Processing Regulations Surface Mining - 2; subject to the Surface Mining Regulations Surface Mining - 3; subject to the Surface Mining Regulations Metallic Mineral Extraction; subject to the Surface Mining Regulations Natural Resource Use Types Fish and Wildlife Management Watershed Management Wetland Restoration Resource-Related Recreation Coastal Access Facilities Use Types Not Listed in This Table** Any use not specifically enumerated in this division, if it is similar to and compatible with the uses permitted in the AE Zone.
- See, Industrial Performance Standards, Section 313-103.1. ** See, “Classifying Uses Not Specifically Mentioned in Use Type Descriptions,” Section 313-165. (Former Section CZ#A313-29(A-C); amended by Ord. 2167, Sec. 22, 4/7/98; amended by Ag Zone ordinance amendments approved by the Humboldt County Board of Supervisors 2/9/99, amended by Ord. 2167, Sec. 13, 4/7/ 98, amended by Ord. 2367A, 7/25/06) 313-7.1 AE: AGRICULTURE EXCLUSIVE Development Standards Minimum Lot Size and Minimum Lot Width Zone Designation Minimum Lot Size Minimum Lot Width
313-7.1 AE: AGRICULTURE EXCLUSIVE Development Standards AE-20 20 acres (As determined during subdivision review and approval.) AE-40 40 acres AE-60 60 acres AE-160 160 acres AE-600 600 acres Maximum Lot Depth (None specified.) Maximum Density (None specified.) Minimum Yard Setbacks*** Front Twenty feet (20'); Thirty feet (30') for flag lots. Rear Thirty feet (30'). Interior Side Thirty feet (30'). Exterior Side Twenty feet (20'). Flag Lots For Flag Lots, the Director, in consultation with the Public Works Department, shall establish the minimum yard that is required for a vehicular turnaround on the lot. Double Frontage Lots Front and rear yards shall be twenty feet (20'), except that the rear yard setback may be reduced to ten feet (10') where such yard abuts an alley. Maximum Ground Coverage (None specified.) Maximum Structure Height (None specified.) Permitted Main Building Types Residential Single Detached; Ancillary Residential, Manufactured Home; Unlimited Mixed Residential - Nonresidential Detached Nonresidential
*** Note: Setbacks may be modified by other provisions of this Code or State law. For example, see Section 313-30: “Alquist-Priolo Fault Hazard” and the “Fire Safe Regulations” at Title III, Division 11. (Former Section CZ#A313-29(A-C); amended by Ord. 2167, Sec. 21, 4/7/98; amended by Ag Zone ordinance amendments approved by the Humboldt County Board of Supervisors 2/9/99) 313-7.2 TC: Commercial Timber Principal Permitted Use Commercial Timber Principal Permitted Use (See Section 313-163.1.9 for description) Use Type Conditionally Permitted Use Residential Use Types A Use Permit is required for a second single-family residence other than an Accessory Dwelling Unit. Civic Use Types Essential Services Solid Waste Disposal; subject to the Solid Waste Disposal Regulations Oil and Gas Pipelines; subject to the Oil and Gas Pipelines Regulations Major Electrical Distribution Lines; subject to the Electrical Distribution Lines Regulations Minor Generation and Distribution Facilities Industrial Use Types* Timber Products Processing Aquaculture Cottage Industry; subject to the Cottage Industry Regulations Agricultural Use Types Agricultural Related Recreation Extractive Use Type Surface Mining - 2; subject to the Surface Mining Regulations Oil and Gas Drilling and Processing; subject to the Oil and Gas Drilling and Processing Regulations Metallic Mineral Extraction; subject to the Surface Mining Regulations Natural Resource Use Type Coastal Access Facilities
313-7.2 TC: Commercial Timber Use Types Not Listed in This Table** Any use not specifically enumerated in this division, if it is similar to and compatible with the uses permitted in the TC Zone. Use Type Compatible Uses Permitted With a Special Permit Residential Use Types Labor Camp Commercial Timber Use Type Timber Related Recreation Natural Resource Use Types Fish and Wildlife Management Watershed Management Wetland Restoration
- See, Industrial Performance Standards, Section 313-103.1. ** See, “Classifying Uses Not Specifically Mentioned in Use Type Descriptions,” Section 313-165. (From Section CZ#A314-11(B); CZ#A313-30(A-C); amended by Ord. 1853, 12/20/88, amended by Ord. 2167, Sec. 22, 4/7/98; amended by Ord. 2367A, 7/25/06) 313-7.2 TC: COMMERCIAL TIMBER Development Standards Minimum Lot Size Forty acres (40a). Minimum Lot Width (As determined during subdivision review and approval). Maximum Lot Depth (None specified.) Maximum Density (None specified.) Maximum Total Conversion of Timberland for Non-Timber Production Uses Two acres (2a) of contiguous or non-contiguous land. Minimum Yard Setbacks*** Front Twenty feet (20'); Thirty feet (30') for flag lot. Rear Thirty feet (30').
313-7.2 TC: COMMERCIAL TIMBER Development Standards Interior Side Thirty feet (30'). Exterior Side Twenty feet (20'). Flag Lots For Flag Lots, the Director, in consultation with the Public Works Department, shall establish the minimum yard that is required for a vehicular turnaround on the lot. Double Frontage Lots Front and rear yards shall be twenty feet (20'), except that the rear yard setback may be reduced to ten feet (10') where such yard abuts an alley. Maximum Ground Coverage (None specified.) Maximum Structure Height Thirty-five feet (35'). Permitted Main Building Types Residential Single Detached; Ancillary Residential; Manufactured Home. Detached Nonresidential *** Note> Setbacks may be modified by other provisions of this Code or State law. For example, see Section 313-30: “Alquist-Priolo Fault Hazard” and the “Fire Safe Regulations” at Title III, Division 11. (From Section CZ#A314-11(B); CZ#A313-30(A-C); amended by Ord. 1853, 12/20/88) 313-7.3 TPZ: Timberland Production Zone Principal Permitted Use Timber Production Principal Permitted Use (See Section 313-163.1.9 for description) Use Type Conditionally Permitted Use Residential Use Types A Use Permit is required for a second single-family residence other than an Accessory Dwelling Unit. Civic Use Types Essential Services Solid Waste Disposal; subject to the Solid Waste Disposal Regulations
313-7.3 TPZ: Timberland Production Zone Oil and Gas Pipelines; subject to the Oil and Gas Pipelines Regulations Major Electrical Distribution Lines; subject to the Electrical Distribution Lines Regulations Minor Generation and Distribution Facilities Industrial Use Types* Timber Products Processing Aquaculture Cottage Industry; subject to the Cottage Industry Regulations Agricultural Use Types Agriculture-Related Recreation Extractive Use Type Surface Mining - 2; subject to the Surface Mining Regulations Oil and Gas Drilling and Processing; subject to the Oil and Gas Drilling and Processing Regulations Natural Resource Use Type Coastal Access Facilities Use Types Not Listed in This Table** Any use not specifically enumerated in this division, if it is similar to and compatible with the uses permitted in the TPZ Zone. Use Type Compatible Uses Permitted With a Special Permit Residential Use Types Labor Camp Commercial Timber Use Type Timber Related Recreation Natural Resource Use Types Fish and Wildlife Management Watershed Management Wetland Restoration
- See, Industrial Performance Standards, Section 313-103.1. ** See, “Classifying Uses Not Specifically Mentioned in Use Type Descriptions,” Section 313-165. (Former Section CZ#A313-31(A-C); Section CZ#A314-11(B); amended by Ord. 1853, 12/20/88; amended by Ord. 2167, Sec. 23, 4/7/98; amended by Ord. 2367A, 7/25/06)
313-7.3 TPZ: TIMBERLAND PRODUCTION ZONE Development Standards Minimum Lot Size Forty acres (40a). Minimum Lot Width (As determined during subdivision review and approval). Maximum Lot Depth (None specified.) Maximum Density (None specified.) Maximum Total Conversion of Timberland for Non-Timber Production Uses Two acres (2a) of contiguous or non-contiguous land. Minimum Yard Setbacks*** Front Twenty feet (20'); Thirty feet (30') for flag lots. Rear Thirty feet (30'). Interior Side Thirty feet (30') Exterior Side Twenty feet (20') Flag Lots For Flag Lots, the Director, in consultation with the Public Works Department, shall establish the minimum yard that is required for a vehicular turnaround on the lot. Double Frontage Lots Front and rear yards shall be twenty feet (20'), except that the rear yard setback may be reduced to ten feet (10') where such yard abuts an alley. Maximum Ground Coverage (None specified.) Maximum Structure Height Thirty-five feet (35'). Permitted Main BuildingTypes Residential Single Detached; Ancillary Residential; Manufactured Home. Detached Nonresidential. *** Note: Setbacks may be modified by other provisions of this Code or State law. For example, see Section 313-30: “Alquist-Priolo Fault Hazard” and the “Fire Safe Regulations” at Title III, Division 11.
(Former Section CZ#A313-31(A-C); Section CZ#A314-11(B); amended by Ord. 1853, 12/20/88) (Ord. 2717, § 12, 6/27/ 2023) 313-8 through 313-14 (Sections Reserved for Future Use) SECTION A: REGULATIONS FOR THE ZONING DISTRICTS
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