Tustin · Zoning · E4
Tustin E4 zoning: height, setbacks and lot size
In Tustin's E4 zone, buildings can be up to 30 ft tall, the front setback is 20 ft and the minimum lot size is 10,000 sq. ft. (Tustin code, read October 2026).
Key points
- Maximum building height: 30 ft
- Minimum front setback: 20 ft
- Minimum side setback: 10% of lot width
- Minimum rear setback: 20% of lot depth (The code also requires at least 1,000 sq ft of clear usable open space on the rear third of the lot)
- Minimum lot size: 10,000 sq. ft.
- Maximum lot coverage: 40%
E4 (Residential Estate District) is a zoning district in Tustin. Every value below was read from the Tustin 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 E4
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 | 30 ft § 9220 · code textTable row “E4 Residential Estate District (Sec. 9222)”, column “Building Height”: 30 feet |
|---|---|
| Minimum front setback | 20 ft See note 1 below the table in the code. § 9220 · code textTable row “E4 Residential Estate District (Sec. 9222)”, column “Front Yard (1)”: 20 feet Note 1: If front on to secondary or primary highway refer to section 9271u. |
| Minimum side setback | 10% of lot width See note 1 below the table in the code. § 9220 · code textTable row “E4 Residential Estate District (Sec. 9222)”, column “Interior Side Yard (1)”: 10 percent of lot width Note 1: If front on to secondary or primary highway refer to section 9271u. |
| Minimum rear setback | 20% of lot depth Applies: The code also requires at least 1,000 sq ft of clear usable open space on the rear third of the lot See note 1 below the table in the code. § 9220 · code textTable row “E4 Residential Estate District (Sec. 9222)”, column “Rear Yard (1)”: 20 percent lot depth, but no less than 1,000 sq. ft. clear and unobstructed usable open space on rear ⅓ of lot Note 1: If front on to secondary or primary highway refer to section 9271u. |
| Minimum lot size | 10,000 sq. ft. § 9220 · code textTable row “E4 Residential Estate District (Sec. 9222)”, column “Minimum Lot Area/Per Family Unit”: 10,000 sq. ft./7,500 sq. ft. |
| Maximum lot coverage | 40% § 9220 · code textTable row “E4 Residential Estate District (Sec. 9222)”, column “Lot Coverage”: 40 percent |
Not on this page
We did not find a general stories, FAR, density limit for E4 in the zoning tables we read. The code may still set one elsewhere — check the Tustin Municipal Code.
Other Tustin zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Tustin's E4 zone?
30 ft — Tustin Municipal Code § 9220.
What is the minimum front setback in Tustin's E4 zone?
20 ft — Tustin Municipal Code § 9220.
What is the minimum side setback in Tustin's E4 zone?
10% of lot width — Tustin Municipal Code § 9220.
What is the minimum rear setback in Tustin's E4 zone?
20% of lot depth (the code also requires at least 1,000 sq ft of clear usable open space on the rear third of the lot) — Tustin Municipal Code § 9220.
What is the minimum lot size in Tustin's E4 zone?
10,000 sq. ft. — Tustin Municipal Code § 9220.
General information, not legal advice.
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