Norco · Zoning · R-3
Norco R-3 zoning: height, setbacks and lot size
In Norco's R-3 zone, buildings can be up to 35 ft tall, the front setback is 25 ft and the minimum lot size is 30,000 sq ft (Norco code, read October 2026).
Key points
- Maximum building height: 35 ft
- Minimum front setback: 25 ft
- Minimum side setback: One-half of building height (Measured from the highest point of finished grade to the top of the building. On the street side, at least 10 ft from the street side property line.)
- Minimum rear setback: one-half of building height (Measured from the highest point of finished grade along the building perimeter to the uppermost portion of the building)
- Minimum lot size: 30,000 sq ft
- Maximum lot coverage: 60%
- Maximum density: 1 unit per 5,445 sq ft (The density suffix on the property sets the lot area per unit; never less than 5,445 sq ft.)
R-3 (Low-Density Multiple-Family Residential) is a zoning district in Norco. Every value below was read from the Norco 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 R-3
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 | 35 ft § 18.17.18 · code textBuildings and other structures erected in this district shall have a maximum height of two and one-half stories or 35 feet, whichever is less. |
|---|---|
| Minimum front setback | 25 ft § 18.17.16 · code textA. Front Yard. Minimum of 25 feet from the right-of-way line as determined by the Master Plan of streets and highways. |
| Minimum side setback | One-half of building height Applies: Measured from the highest point of finished grade to the top of the building. On the street side, at least 10 ft from the street side property line. § 18.17.16 · code textB. Side and Rear Yards. No portion of any roofed building or structure, regardless of the type occupancy, shall be located closer to any side or rear property line than a distance equal to one-half of a dimension that shall be measured from the highest point of a finished grade along the perimeter of the building or structure, to the uppermost portion of the building; provided, however, on the street side of any building or structure, the structure or building shall be located not less than 10 feet from the street side property line. |
| Minimum rear setback | one-half of building height Applies: Measured from the highest point of finished grade along the building perimeter to the uppermost portion of the building § 18.17.16 · code textB. Side and Rear Yards. No portion of any roofed building or structure, regardless of the type occupancy, shall be located closer to any side or rear property line than a distance equal to one-half of a dimension that shall be measured from the highest point of a finished grade along the perimeter of the building or structure, to the uppermost portion of the building; provided, however, on the street side of any building or structure, the structure or building shall be located not less than 10 feet from the street side property line. |
| Minimum lot size | 30,000 sq ft § 18.17.10 · code textAll lots hereafter created in this zone shall contain a minimum of 30,000 square feet and no lot in this district shall be reduced below this standard. |
| Maximum lot coverage | 60% § 18.17.20 · code textThe maximum lot coverage of all structures shall not be more than 60 percent of the total lot area. |
| Maximum density | 1 unit per 5,445 sq ft Applies: The density suffix on the property sets the lot area per unit; never less than 5,445 sq ft. § 18.17.14 · code textThe required lot area per dwelling unit shall be governed by the density suffix applicable to the subject property, and shall be computed by multiplying the net acreage (or portion thereof) of the property by the density suffix. In no event shall less than 5,445 square feet of lot area per dwelling unit be provided. |
Not on this page
We did not find a general stories, FAR limit for R-3 in the zoning tables we read. The code may still set one elsewhere — check the Norco Municipal Code.
Other Norco zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Norco's R-3 zone?
35 ft — Norco Municipal Code § 18.17.18.
What is the minimum front setback in Norco's R-3 zone?
25 ft — Norco Municipal Code § 18.17.16.
What is the minimum side setback in Norco's R-3 zone?
One-half of building height (measured from the highest point of finished grade to the top of the building. On the street side, at least 10 ft from the street side property line) — Norco Municipal Code § 18.17.16.
What is the minimum rear setback in Norco's R-3 zone?
one-half of building height (measured from the highest point of finished grade along the building perimeter to the uppermost portion of the building) — Norco Municipal Code § 18.17.16.
What is the minimum lot size in Norco's R-3 zone?
30,000 sq ft — Norco Municipal Code § 18.17.10.
General information, not legal advice.
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