Carlsbad · Zoning · R-3
Carlsbad R-3 zoning: height, setbacks and lot size
In Carlsbad's R-3 zone, generally buildings can be up to 35 ft tall, the front setback is 20 ft and the minimum lot size is 7,500 sq ft, with the conditions listed below (Carlsbad code, read October 2026).
Key points
- Maximum building height: 35 ft
- Minimum front setback: 20 ft (15 ft on key lots and lots that side upon commercially or industrially zoned property)
- Minimum side setback: 10% of lot width, minimum 5 ft, maximum 10 ft (Interior lots; the side yard is required on each side)
- Minimum lot size: 7,500 sq ft
- Maximum lot coverage: 60%
R-3 (Multiple-Family Residential Zone) is a zoning district in Carlsbad. Every value below was read from the Carlsbad 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 § 21.16.030 · code textIn the R-3 zone no building shall exceed a height of thirty-five feet. |
|---|---|
| Minimum front setback | 20 ft Applies: 15 ft on key lots and lots that side upon commercially or industrially zoned property § 21.16.040 · code textEvery lot in the R-3 zone shall have a front yard of not less than twenty feet, except that on key lots and lots which side upon commercially or industrially zoned property the depth of the required front yard need not exceed fifteen feet. |
| Minimum side setback | 10% of lot width, minimum 5 ft, maximum 10 ft Applies: Interior lots; the side yard is required on each side § 21.16.050 · code textInterior lots shall have a side yard on each side of the lot which side yard has a width not less than ten percent of the width of the lot; provided, that such side yard shall be not less than five feet in width and need not exceed ten feet; and |
| Minimum lot size | 7,500 sq ft § 21.16.070 · code textThe minimum required area of a lot in the R-3 zone shall be not less than seven thousand five hundred square feet. |
| Maximum lot coverage | 60% § 21.16.090 · code textAll buildings, including accessory buildings and structures, shall not cover more than sixty percent of the area of a lot. |
When a different number applies
The code sets other values for particular lots, buildings or locations in R-3:
- Minimum front setback: 15 ft — Key lots and lots which side upon commercially or industrially zoned property § 21.16.040
- Minimum side setback: 10 ft — Corner lots and reversed corner lots, on the side street side; side yard extends the full length of the lot § 21.16.050
Not on this page
We did not find a general stories, rear setback, FAR, density limit for R-3 in the zoning tables we read. The code may still set one elsewhere — check the Carlsbad Municipal Code.
Other Carlsbad zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Carlsbad's R-3 zone?
35 ft — Carlsbad Municipal Code § 21.16.030.
What is the minimum front setback in Carlsbad's R-3 zone?
20 ft (15 ft on key lots and lots that side upon commercially or industrially zoned property) — Carlsbad Municipal Code § 21.16.040.
What is the minimum side setback in Carlsbad's R-3 zone?
10% of lot width, minimum 5 ft, maximum 10 ft (interior lots; the side yard is required on each side) — Carlsbad Municipal Code § 21.16.050.
What is the minimum lot size in Carlsbad's R-3 zone?
7,500 sq ft — Carlsbad Municipal Code § 21.16.070.
What is the maximum lot coverage in Carlsbad's R-3 zone?
60% — Carlsbad Municipal Code § 21.16.090.
General information, not legal advice.
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