Ione · Zoning · R-1b
Ione R-1b zoning: height, setbacks and lot size
In Ione's R-1b zone, buildings can be up to 35 ft (2.5 stories) tall, the front setback is 25 ft and the minimum lot size is 6,000 sf (Ione code, read October 2026).
Key points
- Maximum building height: 35 ft
- Maximum number of stories: 2.5 stories
- Minimum front setback: 25 ft
- Minimum side setback: 5 ft (Combined side yards at least 12 ft; one side needs 4 ft of clear passage to the rear yard)
- Minimum lot size: 6,000 sf
- Maximum density: 7.0 du/acre
R-1b is a zoning district in Ione. Every value below was read from the Ione 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-1b
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 § 17.22.040 · code textTable row “Height (maximum)”, column “R-1b”: 35 ft./2.5 stories |
|---|---|
| Maximum number of stories | 2.5 stories § 17.22.040 · code textTable row “Height (maximum)”, column “R-1b”: 35 ft./2.5 stories |
| Minimum front setback | 25 ft § 17.22.040 · code textTable row “Front”, column “R-1b”: 25 ft. |
| Minimum side setback | 5 ft Applies: Combined side yards at least 12 ft; one side needs 4 ft of clear passage to the rear yard § 17.22.040 · code textTable row “Side”, column “R-1b”: 5 ft. 1, 2 |
| Minimum lot size | 6,000 sf § 17.22.040 · code textTable row “Minimum Lot Size”, column “R-1b”: 6,000 sf 5 |
| Maximum density | 7.0 du/acre § 17.22.040 · code textTable row “Maximum Density”, column “R-1b”: 7.0 du/acre |
Uses in R-1b
Uses the code's use tables allow in R-1b, or allow with a permit. Each links to its page with the code section.
- Duplex — Needs a site plan review (administrative or discretionary, per section 17.10.030)
- Child care center — Needs a conditional use permit
- Community garden — Allowed
Not on this page
We did not find a general rear setback, lot coverage, FAR limit for R-1b in the zoning tables we read. The code may still set one elsewhere — check the Ione Municipal Code.
Other Ione zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Ione's R-1b zone?
35 ft — Ione Municipal Code § 17.22.040.
What is the maximum number of stories in Ione's R-1b zone?
2.5 stories — Ione Municipal Code § 17.22.040.
What is the minimum front setback in Ione's R-1b zone?
25 ft — Ione Municipal Code § 17.22.040.
What is the minimum side setback in Ione's R-1b zone?
5 ft (combined side yards at least 12 ft; one side needs 4 ft of clear passage to the rear yard) — Ione Municipal Code § 17.22.040.
What is the minimum lot size in Ione's R-1b zone?
6,000 sf — Ione Municipal Code § 17.22.040.
General information, not legal advice.
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