Duarte · Zoning · R-3
Duarte R-3 zoning: height, setbacks and lot size
In Duarte's R-3 zone, buildings can be up to 40 ft (3 stories) tall, the front setback is 30 ft and the minimum lot size is 9,000 sq ft (Duarte code, read October 2026).
Key points
- Maximum building height: 40 ft
- Maximum number of stories: 3 stories
- Minimum front setback: 30 ft
- Minimum side setback: 5 ft (Interior side yard)
- Minimum rear setback: 20 ft
- Minimum lot size: 9,000 sq ft
- Maximum lot coverage: 50%
- Maximum density: 1 unit per 2,074 sq ft of site area
R-3 is a zoning district in Duarte. Every value below was read from the Duarte 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 | 40 ft § 19.10.030 · code textTable row “Height (maximum)”, column “R-3”: 40 ft or 3 stories, whichever is less |
|---|---|
| Maximum number of stories | 3 stories § 19.10.030 · code textTable row “Height (maximum)”, column “R-3”: 40 ft or 3 stories, whichever is less |
| Minimum front setback | 30 ft § 19.10.030 · code textTable row “Front”, column “R-3”: 30 ft |
| Minimum side setback | 5 ft Applies: Interior side yard § 19.10.030 · code textTable row “Interior”, column “R-3”: 5 ft |
| Minimum rear setback | 20 ft § 19.10.030 · code textTable row “All other zones”, column “R-3”: 20 ft |
| Minimum lot size | 9,000 sq ft § 19.10.030 · code textTable row “Lot Area (sq ft)”, column “R-3”: 9,000 |
| Maximum lot coverage | 50% § 19.10.030 · code textTable row “Lot Coverage (maximum)”, column “R-3”: 50% |
| Maximum density | 1 unit per 2,074 sq ft of site area § 19.10.030 · code textTable row “Density (maximum)”, column “R-3”: 1 unit per 2,074 sf of site area |
Uses in R-3
Uses the code's use tables allow in R-3, or allow with a permit. Each links to its page with the code section.
- Duplex — Allowed
- Apartment building — Allowed
When a different number applies
The code sets other values for particular lots, buildings or locations in R-3:
- Minimum rear setback: 25 ft — Abutting R-1 zone § 19.10.030
- Minimum rear setback: Add 5 ft for each story above the first — buildings of more than one story; a part of a story counts as a story § 19.10.040
Not on this page
We did not find a general FAR limit for R-3 in the zoning tables we read. The code may still set one elsewhere — check the Duarte Municipal Code.
Other Duarte zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Duarte's R-3 zone?
40 ft — Duarte Municipal Code § 19.10.030.
What is the maximum number of stories in Duarte's R-3 zone?
3 stories — Duarte Municipal Code § 19.10.030.
What is the minimum front setback in Duarte's R-3 zone?
30 ft — Duarte Municipal Code § 19.10.030.
What is the minimum side setback in Duarte's R-3 zone?
5 ft (interior side yard) — Duarte Municipal Code § 19.10.030.
What is the minimum rear setback in Duarte's R-3 zone?
20 ft — Duarte Municipal Code § 19.10.030.
General information, not legal advice.
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