3.1 MB: BUSINESS PARK ZONE

The MB Zone is intended to protect sites which are suitable for “business park” developments: well-designed mixed industrial/commercial areas composed of nuisance-free light industrial, research and development, administrative and business and professional office facilities, developed in a park-like environment. For further description of use types, see “Glossary of Use Types” in Section D: Use Types, at the end of this Chapter. (Former Section INL#314-44; Ord. 1800, Sec. 1, 6/23/87)

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314-3.1 MB: BUSINESS PARK
Use Type Principal Permitted Use
Civic Use Types Administrative
Commercial Use Types Office and Professional Service
Warehousing, Storage and Distribution
Industrial Use Types Research/Light Industrial
Residential Use Types Supportive housing is permitted above the ground
floor as the primary use.
Commercial Residential.
Within Housing Opportunity Zones, residential uses
subordinate to the permitted use including
caretaker’s residences and multiple dwellings on
the upper floors of multistory structures where
below are commercial establishments engaged in
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The Humboldt County Code is current through Ordinance 2784, passed March 10, 2026.

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314-3.1 MB: BUSINESS PARK
uses designated “Principally Permitted” or
“Conditionally Permitted” in the MB Zone.
Use Type Uses Permitted With a Special Permit
Residential Use Types Outside Housing Opportunity Zones, residential
uses subordinate to the permitted use including
caretaker’s residences and apartments on the
upper floors of multistory structures where below
are establishments engaged in uses designated
“Principally Permitted” or “Conditionally Permitted”
in the MB Zone.
Transitional Housing
Emergency Shelters
Supportive housing may be located on the ground
floor with a special permit.
Use Type Uses Permitted With a Use Permit
Commercial Use Types Retail Sales
Retail Service
Transient Habitation
Mini-Storage
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 MB Zone.
Other Regulations
Minimum Lot Area 10,000 square feet.
Minimum Lot Width Sixty feet (60').
Minimum Yard Setbacks*
Front Thirty feet (30').
Rear Ten feet (10').
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The Humboldt County Code is current through Ordinance 2784, passed March 10, 2026.

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314-3.1 MB: BUSINESS PARK
Side Thirty feet (30') where side yard adjoins a public
street and ten feet (10') otherwise.
Maximum Ground Coverage Fifty percent (50%).
Maximum Building Height Fifty feet (50').
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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#314-44(a)(1-4); (Former Section INL#314-44(b)(1-3); INL#314-44(c)(1-5); Ord. 1800, Sec. 1, 6/ 23/87)