Earlier editions: 2026-09
Title 18 — ZONING›Division 2 — ZONING DISTRICTS AND ALLOWABLE LAND USES
National City Municipal Code § 18.25.040 General development standards
National City Municipal Code · 2026-10 edition · updated 2026-10-04 · National City
Cite as: National City Municipal Code § 18.25.040 · Text as of 2026-10-04
18.25.010 - Purpose.¶
This section lists the land uses allowed within the industrial zones and provides basic standards for site layout and building use. The purposes of the individual industrial zoning districts and the manner in which they are applied are as follows:
A. Light Industrial (IL). The IL light industrial zone is intended to accommodate warehousing operations, storage, office, and research and development facilities and establishments engaged in the manufacturing, assembling, packaging, treatment and processing of products other than those that which may be obnoxious or offensive to adjacent residential and business districts due to reason of odor, dust, smoke, gas, noise, vibration or other nuisances.
B. Medium Industrial (IM). The IM medium industrial zone is designed to provide for the development of medium manufacturing and industrial uses that operate without excessive noise, dust, odor or other nuisances and yet may be objectionable to other non-industrial uses.
C. Heavy Industrial (IH). The IH heavy industrial zone is intended to provide for manufacturing facilities and industries that may be obnoxious by reason of emission of odor, dust, smoke, gas, noise, vibration or similar causes and therefore require isolation from many other kinds of land uses.
(Ord. No. 2024-2529, 4-2-2024)
18.25.020 - Allowed land uses and permit requirements.¶
Table 18.25.020 identifies the uses of land allowed in each industrial zone.
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TABLE 18.25.020 Allowed Land Uses Industrial Zones
| Land Use | Zone | Zone | Zone | Specific Use Regulations |
|---|---|---|---|---|
| Land Use | IL | IM | IH | Specific Use Regulations |
| Animal boarding/ |
C | C | C | |
| Assembly and light manufacturing/ |
P | P | P | |
| Automotive impound and storage yards | C | C | C | Section 18.30.040 |
| Auto Body and Paint | C | C | C | |
| Auto towing dispatch (accessory to service station) | P | P | — | |
| Breweries, small | P | P | P | |
| Breweries, large | C | C | C | |
| Brewery tasting room | P | P | P | Section 18.30.050 /City Council Policy 707 |
| Building supplies and equipment, sales and rental | P | P | P | |
| Cemetery/ |
— | C | C | |
| Commercial recreation, indoor | C | — | — | |
| Eating places, dine-in (accessory) | P | P | P | |
| Emergency shelter | P | — | — | Section 18.30.110 |
| Gasoline service station | C | C | — | Section 18.30.190 |
| Goods and services, retail sales (accessory) | P | P | P | |
| Heavy manufacturing/ |
— | — | C | |
| Industrial equipment/ |
P | P | P | |
| Medium manufacturing/ |
— | P | P | |
| Offices (accessory) | P | P | P | |
| Offices | P | M | M | |
| Open space reserves | P | P | P | |
| Outdoor storage | C | C | C | Section 18.30.160 |
| Pawn shops | C | — | — | Section 18.30.330 |
| Payday lenders | C | — | — | Section 18.30.320 |
| Plant nursery | P | P | C | |
| Parking, structure/ |
P | P | P | |
| Personal storage facilities (mini-warehouses) | P | P | — | |
| Public assembly | C | — | — | |
| Public safety facilities | P | P | P | |
| Recycling facilities, small (accessory) | P | P | — | Section 18.30.170 |
| Recycling facilities, mobile | C | C | — | Section 18.30.170 |
| Renewable energy infrastructure (accessory) | P | P | P | Section 18.30.210/18.30.300; California Building Code |
| Renewable energy infrastructure | P | P | P | Section 18.30.210/18.30.300; California Building Code |
| Research and development | P | P | P | |
| Scrap metal processing | — | — | C | Section 18.30.180 |
| Sixty-day storage of wrecked vehicles | P | P | P | |
| Storage facility, self (mini-warehouses) | P | P | P | |
| Tattoo parlors and body piercing establishments | C | — | — | Section 18.30.310 |
| Telecommunication facilities, commercial | C | C | C | Section 18.30.220 |
| Trade schools | P | C | C | |
| Trucking and transportation terminal | — | C | P | |
| Urban agriculture | C | — | — | Section 18.30.240 |
| Utility facilities, minor | P | P | P | |
| Utility facilities, major | P | P | P | |
| Vehicle repair or service (minimum 7,500 square-foot lot) | P | P | P | |
| Veterinary hospitals and clinics | M | M | — | Section 18.30.250 |
| Waterfront related industries | P | P | P | |
| Wholesaling, warehousing, and distribution | P | P | P | |
| Winery | C | C | C | |
| Winery tasting room | P | P | P | Section 18.30.050 /City Council Policy 707 |
| P Permitted | P Permitted | P Permitted | P Permitted | P Permitted |
| C Conditional use permit | C Conditional use permit | C Conditional use permit | C Conditional use permit | C Conditional use permit |
| M Minor use permit (ministerial) | M Minor use permit (ministerial) | M Minor use permit (ministerial) | M Minor use permit (ministerial) | M Minor use permit (ministerial) |
| — Not permitted | — Not permitted | — Not permitted | — Not permitted | — Not permitted |
(Ord. No. 2024-2529, 4-2-2024)
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18.25.030 - Accessory uses.¶
Accessory uses and the conditions of their use are set out in Subsections (A) through (C) below.
A. Storage Buildings and Garages. Storage buildings and garages incidental to principal uses on the same premises are permitted.
B. Sale of Gasoline. The sale of gasoline may be permitted as an accessory use in any zone where gasoline service stations are permitted, subject to the issuance of a conditional use permit.
C. Auctions. Auctions, in conjunction with used furniture or antique sales, may be permitted subject to the issuance of a conditional use permit.
(Ord. No. 2024-2529, 4-2-2024)
18.25.040 - General development standards.¶
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TABLE 18.25.040 Development Standards Industrial Zones
| Development Standard | Zone | Zone | Zone |
|---|---|---|---|
| Development Standard | IL | IM | IH |
| Minimum lot area | 5,000 sq. ft. (a) | 5,000 sq. ft. (a) | 5,000 sq. ft. |
| Minimum street frontage | 50' (b) | 50' (b) | 50' |
| Minimum setbacks | When adjacent to a residential zone, 20' from the adjacent zone boundary | When adjacent to a residential zone, 20' from the adjacent zone boundary | |
| Street | 10' | 10' | 10' |
| Other | 0' | 0' | 0' |
| Maximum height | 35' and 3 stories | 60' and 4 stories | 60' and 4 stories |
| When adjacent to a residential zone, the maximum height shall not exceed the maximum height in the adjacent zone within one hundred feet of the adjacent zone boundary. | |||
| Architectural features and mechanical equipment may exceed the maximum height by an additional ten feet. | |||
| Maximum floor area ratio | 2 | 2 | 2 |
| Maximum lot coverage | 60% | 80% | 80% |
Notes:
(a) Automobile service stations shall have a minimum lot area of fifteen thousand square feet.
(b) Automobile service stations shall have a minimum street frontage of one hundred feet.
(Ord. No. 2024-2529, 4-2-2024)
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18.25.050 - Uses to be adequately housed in completely enclosed buildings.¶
All uses in the industrial zones shall be housed in completely enclosed buildings; provided, however, that businesses such as lumber yards, building material yards, gas stations, recycling facilities, metal processing yards, vehicle storage, storage lots, and similar uses that customarily include outdoor use, may be permitted outside of a completely enclosed building when screened from public view.
(Ord. No. 2024-2529, 4-2-2024)
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