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Guide to the M-1: Light Industrial District in Grass Valley

Jurisdiction: Grass ValleyCode Version: September 23, 2025

The M-1: Light Industrial district in Grass Valley is established to accommodate a diverse range of light industrial, manufacturing, and distribution activities that implement the municipality's General Plan. This district requires a minimum parcel size of one acre and permits structures up to 50 feet or four stories in height [Table 2-13]. Most light industrial and warehousing operations are permitted by right, provided they are conducted within entirely enclosed buildings [Section 17.24.050].

Purpose and Character

The City of Grass Valley applies the M-1: Light Industrial zone to areas specifically suited for a variety of light industrial uses. The primary intent is to provide space for manufacturing, processing, and assembly activities that are compatible with the community's infrastructure and neighboring land uses. The M-1: Light Industrial district implements and is consistent with the "manufacturing-industrial" designation of the Grass Valley General Plan [Section 17.24.020].

A defining characteristic of the M-1: Light Industrial zone is the requirement for operational containment. With specific exceptions for activities like fuel dealerships or building material sales, all manufacturing activities must be located within an entirely enclosed building to mitigate potential impacts on the surrounding environment [Section 17.24.050].

Permitted Land Uses

The Grass Valley Development Code classifies many industrial, retail, and service-oriented uses as "Permitted" (P) in the M-1: Light Industrial zone, while others require a "Minor Use Permit" (MUP) or a "Use Permit" (UP).

Industrial and Resource Uses

  • Permitted (P): Light and medium-intensity manufacturing/processing, research and development, media production, printing and publishing, contractor storage yards, personal storage facilities (mini-storage), indoor warehousing, and wholesaling/distribution [Table 2-10].
  • Use Permit Required (UP): Scrap or junk yards, outdoor storage (as a primary use), and mining operations [Table 2-10].
  • Minor Use Permit Required (MUP): Animal keeping and small recycling collection facilities [Table 2-10].

Commercial and Retail Uses

  • Permitted (P): General retail, automotive/vehicle sales and rental, artisan shops, building and landscape material sales (indoor), farm supply and feed stores, fuel dealers, and gas stations [Table 2-10].
  • Use Permit Required (UP): Building and landscape material sales (outdoor) and commercial parking facilities [Table 2-10].

Residential and Service Uses

  • Permitted (P): Caretaker quarters, accessory dwelling units (ADUs), medical clinics, professional offices, and repair services for equipment and appliances [Table 2-10].
  • Minor Use Permit Required (MUP): Day care homes (large family) and bed and breakfast inns [Table 2-10].
  • Use Permit Required (UP): Day care centers, hospitals, and utility facilities [Table 2-10].

Development Standards

Development within the M-1: Light Industrial district must adhere to specific site planning and building standards regarding lot dimensions, setbacks, and height limits.

Development Feature Requirement for M-1: Light Industrial Zone
Minimum Area 1 acre [Table 2-13]
Minimum Width Determined through subdivision review [Table 2-13]
Front Setback (Major Street) 20 feet from back of curb [Table 2-13]
Front Setback (Local Street) 30 feet from back of curb [Table 2-13]
Side Setback (Interior) 10 feet [Table 2-13]
Side Setback (Street Side) 15 feet from back of curb [Table 2-13]
Rear Setback 10 feet [Table 2-13]
Maximum Height 50 feet and 4 stories [Table 2-13]
Max Residential Density None allowed, except for caretaker units [Table 2-13]

Parking and Loading Requirements

Grass Valley requires M-1: Light Industrial developments to provide adequate off-street parking based on the specific type of space being utilized within the facility.

Land Use Component Vehicle Spaces Required
Office Area 1 space for each 200 square feet [Table 3-3]
Manufacturing/Industrial Floor Area 1 space for each 500 square feet [Table 3-3]
Open Storage Area 1 space for each 5,000 square feet [Table 3-3]
Warehousing 1 space for each 500 square feet [Table 3-3]
General Retail (within M-1) 1 space for each 250 square feet [Table 3-3]

Additionally, nonresidential uses in Grass Valley must provide off-street loading spaces. Facilities with a total gross floor area between 15,000 and 50,000 square feet must provide at least one loading space, while those over 50,000 square feet require two spaces [Table 3-8].

Sections Cited

  • Section 17.24.020 - Purposes of commercial and industrial zones.
  • Section 17.24.030 - Commercial and industrial zone land uses and permit requirements.
  • Section 17.24.040 - Commercial and industrial zone site planning and building standards.
  • Section 17.24.050 - Additional commercial and industrial zone standards.
  • Section 17.36.040 - Number of parking spaces required.
  • Section 17.36.110 - Loading space requirements.
  • Table 2-10 - Allowed Land Uses and Permit Requirements for Commercial and Industrial Zone.
  • Table 2-13 - M-1 and M-2 Zone Development Standards.
  • Table 3-3 - Parking Requirements by Land Use.
  • Table 3-8 - Required Off-Street Loading Spaces.

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