Grand Terrace · Zoning · R3-20
Grand Terrace R3-20 zoning: height, setbacks and lot size
In Grand Terrace's R3-20 zone, buildings can be up to 35 ft tall, the front setback is 25 ft and the minimum lot size is 12,000 sq ft (Grand Terrace code, read October 2026).
Key points
- Maximum building height: 35 ft
- Minimum front setback: 25 ft
- Minimum side setback: 10 ft (Interior lot, with or without a garage; also the non-street side of a corner lot.)
- Minimum rear setback: 20 ft
- Minimum lot size: 12,000 sq ft
- Maximum lot coverage: 60%
- Maximum density: 13 to 20 units per acre (The code sets a range: at least 13, at most 20. A density bonus may apply under the California Government Code.)
R3-20 is a zoning district in Grand Terrace. Every value below was read from the Grand Terrace 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 R3-20
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 § 18.10.040 · code textTable row “Height (Maximum linear feet)”, column “R3-20”: 35 e |
|---|---|
| Minimum front setback | 25 ft § 18.10.040 · code textTable row “•Front Yard”, column “R3-20”: 25 b |
| Minimum side setback | 10 ft Applies: Interior lot, with or without a garage; also the non-street side of a corner lot. § 18.10.040 · code textTable row “With Garage”, column “R3-20”: 10 b |
| Minimum rear setback | 20 ft § 18.10.040 · code textTable row “•Rear Yard”, column “R3-20”: 20 b |
| Minimum lot size | 12,000 sq ft § 18.10.040 · code textTable row “Area (Minimum square feet)”, column “R3-20”: 12,000 |
| Maximum lot coverage | 60% § 18.10.040 · code textTable row “Lot Coverage (Maximum percent)”, column “R3-20”: 60 |
| Maximum density | 13 to 20 units per acre Applies: The code sets a range: at least 13, at most 20. A density bonus may apply under the California Government Code. § 18.10.040 · code textTable row “Density (Allowable dwelling units per acre)”, column “R3-20”: 13-20 c |
When a different number applies
The code sets other values for particular lots, buildings or locations in R3-20:
- Minimum side setback: 15 ft — Corner lot, street side § 18.10.040
Not on this page
We did not find a general stories, FAR limit for R3-20 in the zoning tables we read. The code may still set one elsewhere — check the Grand Terrace Municipal Code.
Other Grand Terrace zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Grand Terrace's R3-20 zone?
35 ft — Grand Terrace Municipal Code § 18.10.040.
What is the minimum front setback in Grand Terrace's R3-20 zone?
25 ft — Grand Terrace Municipal Code § 18.10.040.
What is the minimum side setback in Grand Terrace's R3-20 zone?
10 ft (interior lot, with or without a garage; also the non-street side of a corner lot) — Grand Terrace Municipal Code § 18.10.040.
What is the minimum rear setback in Grand Terrace's R3-20 zone?
20 ft — Grand Terrace Municipal Code § 18.10.040.
What is the minimum lot size in Grand Terrace's R3-20 zone?
12,000 sq ft — Grand Terrace Municipal Code § 18.10.040.
General information, not legal advice.
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