National City · Zoning · MXT
National City MXT zoning: height, setbacks and lot size
In National City's MXT zone, buildings can be up to 45 ft (4 stories) tall and the front setback is 0 ft (National City code, read October 2026).
Key points
- Maximum building height: 45 ft
- Maximum number of stories: 4 stories
- Minimum front setback: 0 ft
- Maximum floor area ratio (FAR): 2.0 (mixed-use)
- Maximum density: 24 units per acre (density is measured net of rights-of-way)
MXT (Mixed-Use Transition) is a zoning district in National City. Every value below was read from the National City Municipal Code and links to its section (read October 2026). State laws such as the ADU and SB 9 rules can allow more on a residential lot. General information, not legal advice — read the code text and check with the city before you build.
Development standards in MXT
The general rule for a typical lot in this zone. Zoning tables often attach notes, such as rules for corner lots, lots next to a residential zone, or new subdivisions only. Open “code text” under a value to see the table cell or sentence it was read from.
| Maximum building height | 45 ft § 18.24.040 · code textTable row “Height”, column “Maximum”: 45' and 4 stories |
|---|---|
| Maximum number of stories | 4 stories § 18.24.040 · code textTable row “Height”, column “Maximum”: 45' and 4 stories |
| Minimum front setback | 0 ft § 18.24.040 · code textTable row “Street”, column “Minimum”: 0' |
| Maximum floor area ratio (FAR) | 2.0 Applies: mixed-use See note a below the table in the code. § 18.24.040 · code textTable row “Floor area ratio, mixed-use (a)”, column “Maximum”: 2.0 Note a: Mixed use shall be defined as both vertical mixed use (e.g., residential or office above ground floor commercial) and horizontal mixed use (e.g., residential and commercial uses in separate buildings located on a single parcel or site). A mixed use development that is primarily residential shall contain a minimum often percent commercial floor area. A mixed use development that is primarily commer |
| Maximum density | 24 units per acre Applies: density is measured net of rights-of-way § 18.24.040 · code textTable row “Residential density (net rights-of-way)”, column “Maximum”: 24 du/acre |
Uses in MXT
Uses the code's use tables allow in MXT, or allow with a permit. Each links to its page with the code section.
- Single-family home — Allowed — see note
- Bed and breakfast — Needs a conditional use permit
- Child care center — Needs a minor use permit (ministerial)
When a different number applies
The code sets other values for particular lots, buildings or locations in MXT:
- Minimum lot size: 5,000 sq ft — lots on the bulb of a cul-de-sac § 18.24.040
- Maximum floor area ratio (FAR): 1.0 — single-use § 18.24.040
Not on this page
We did not find a general side setback, rear setback, lot size, lot coverage limit for MXT in the zoning tables we read. The code may still set one elsewhere — check the National City Municipal Code.
Other National City zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in National City's MXT zone?
45 ft — National City Municipal Code § 18.24.040.
What is the maximum number of stories in National City's MXT zone?
4 stories — National City Municipal Code § 18.24.040.
What is the minimum front setback in National City's MXT zone?
0 ft — National City Municipal Code § 18.24.040.
What is the maximum floor area ratio (far) in National City's MXT zone?
2.0 (mixed-use) — National City Municipal Code § 18.24.040.
What is the maximum density in National City's MXT zone?
24 units per acre (density is measured net of rights-of-way) — National City Municipal Code § 18.24.040.
General information, not legal advice.
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