3.3 MH: HEAVY INDUSTRIAL ZONE

The Heavy Industrial or MH Zone is intended to apply to areas devoted to normal operations of industries subject only to regulations as are needed to control congestion and protect surrounding areas. The following regulations shall apply to all Heavy Industrial or MH Zones. (Former Section INL#314-46; Ord. 1086, Sec. 12, 7/13/76; Amended by Ord. 2214, 6/6/00; Amended by Ord. 2472, Sec. 1, 2/14/12)

314-3.3 MH: HEAVY INDUSTRIAL Principal Permitted Uses

Small animal hospitals completely enclosed within a building. (From Section INL#314-37(b)(2); Ord. 1086, Sec. 8, 7/13/76)

Stores, agencies and services such as carpentry and cabinet-making shops, clothing manufacture, contractors’ yards, dry cleaning and laundry plants, handicraft manufacture, lumber yards, metalworking shops, wholesale outlet stores, painters’ and decorators’ yards, plumbing shops, printing, lithographing and major auto repair. (From Section INL#314-37(b)(3); Ord. 1086, Sec. 8, 7/13/76)

Administrative, business and professional offices. (From Section INL#314-43(a)(2))

Manufacturing of electrical and electronic equipment, of household effects such as lamps, rugs and fabrics, and research and development laboratories. (From Section INL#314-43(a)(3))

Animal hospitals and kennels. (From Section INL#314-43(b)(2))

Animal feed and sales yards. (From Section INL#314-43(b)(3))

Manufacture of furniture, finished paper and paper products. (From Section INL#314-43(b)(4))

Industrial manufacturing uses, except as provided in the following subsection, Uses Permitted With a Use Permit.

Uses Permitted With a Special Permit

The Humboldt County Code is current through Ordinance 2784, passed March 10, 2026.

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314-3.3 MH: HEAVY INDUSTRIAL
Single-room occupancy facilities which are conversions of existing buildings.
Uses Permitted With a Use Permit
Dwellings, accessory dwelling units, manufactured homes, hotels, motels, emergency shelters,
manufactured home parks, and special occupancy parks. (Amended by Ord. 2335, 12/14/04)
Emergency dependent unit villages and alternative lodge parks.
All uses except: One (1) family dwellings; general agriculture; rooming and boarding of not more than two
(2) persons; and manufactured homes. (Former Sections 314-2(c); 314-2(b)(1-4) and 314-46(b)(2))
Any use not specifically enumerated in this division, if it is similar to and compatible with the uses
permitted in the MH Zone.
Other Regulations
Minimum Lot Area One acre (1a). (From Section INL#314-43(c))
Minimum Lot Width (None specified.) (From Section INL#314-43(c))
Minimum Yard Setbacks*
Front Fifty feet (50'); (From Section INL#314-43(c))
Rear Fifty feet (50'); (From Section INL#314-43(c))
Side Ten percent (10%) of average-lot width but not less than twenty-five feet
(25'). (From Section INL#314-43(c))
Maximum Ground Coverage (None specified.)
Maximum Building Height Seventy-five feet (75'). (From Section INL#314-43(c))
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*** Note:** Setbacks may be modified by other provisions of this Code or State law. For example, see Section 314-22.1, “Alquist-Priolo Fault Hazard” and the “Fire Safe” Regulations at Title III, Division 11.

(Former Section INL#314-46(a)(1-3); Ord. 1086, Sec. 12, 7/13/76) (Former Section INL#314-46(b)(1-2); Ord. 894, Sec. 1, 12/19/72; Amended by Ord. 1086, Sec. 12, 7/13/76; Amended by Ord. 2166, Sec. 16, 4/7/98) (Ord. 2678, § 3, 7/13/ 2021; Ord. 2693, § 7, 6/7/2022; Ord. 2721, § 6, 7/11/2023; Ord. 2742, § 4, 8/20/2024; Ord. 2747, § 5, 10/1/2024; Ord. 2748, § 4, 10/1/2024)

The Humboldt County Code is current through Ordinance 2784, passed March 10, 2026.

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314-4 Public Zones