Marin County · Zoning · C-R2
Marin County C-R2 zoning: height, setbacks and lot size
In Marin County's C-R2 zone, generally buildings can be up to 25 ft tall, the front setback is 25 ft and the minimum lot size is 7,500 sq. ft., with the conditions listed below (Marin County code, read October 2026).
Key points
- Maximum building height: 25 ft
- Minimum front setback: 25 ft
- Minimum side setback: 6 ft
- Minimum rear setback: 20% of lot depth to 25 ft. max.
- Minimum lot size: 7,500 sq. ft. (May change when combined with a coastal -B district, or in areas of sloping terrain.)
- Maximum floor area ratio (FAR): 0.30
- Maximum density: 1 unit per 7,500 sq. ft. (Same as the minimum lot area; land divisions with sensitive habitat or no public water or sewer use the low end of the range.)
C-R2 is a zoning district in Marin County. Every value below was read from the Marin County 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 C-R2
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 | 25 ft § 20.64.030 · code textTable row “C-R2”, column “Primary”: 25 ft. |
|---|---|
| Minimum front setback | 25 ft § 20.64.030 · code textTable row “C-R2”, column “Front”: 25 ft. |
| Minimum side setback | 6 ft § 20.64.030 · code textTable row “C-R2”, column “Sides”: 6 ft., 10 ft. on street side |
| Minimum rear setback | 20% of lot depth to 25 ft. max. § 20.64.030 · code textTable row “C-R2”, column “Rear”: 20% of lot depth to 25 ft. max. |
| Minimum lot size | 7,500 sq. ft. Applies: May change when combined with a coastal -B district, or in areas of sloping terrain. § 20.64.030 · code textTable row “C-R2”, column “Minimum Lot Area (1)”: 7,500 sq. ft. |
| Maximum floor area ratio (FAR) | 0.30 The code attaches notes 5, 7 to this value. This page does not show them; read the code before relying on the number. § 20.64.030 · code textTable row “C-R2”, column “Maximum FAR (5,7)”: 0.30 |
| Maximum density | 1 unit per 7,500 sq. ft. Applies: Same as the minimum lot area; land divisions with sensitive habitat or no public water or sewer use the low end of the range. § 20.64.030 · code textTable row “C-R2”, column “Maximum Residential Density (6)”: 1 unit per minimum lot area required |
When a different number applies
The code sets other values for particular lots, buildings or locations in C-R2:
- Minimum side setback: 10 ft — street side § 20.64.030
Not on this page
We did not find a general stories, lot coverage limit for C-R2 in the zoning tables we read. The code may still set one elsewhere — check the Marin County Municipal Code.
Other Marin County zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Marin County's C-R2 zone?
25 ft — Marin County Municipal Code § 20.64.030.
What is the minimum front setback in Marin County's C-R2 zone?
25 ft — Marin County Municipal Code § 20.64.030.
What is the minimum side setback in Marin County's C-R2 zone?
6 ft — Marin County Municipal Code § 20.64.030.
What is the minimum rear setback in Marin County's C-R2 zone?
20% of lot depth to 25 ft. max. — Marin County Municipal Code § 20.64.030.
What is the minimum lot size in Marin County's C-R2 zone?
7,500 sq. ft. (may change when combined with a coastal -B district, or in areas of sloping terrain) — Marin County Municipal Code § 20.64.030.
General information, not legal advice.
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