Concord · Zoning · RR-20
Concord RR-20 zoning: height, setbacks and lot size
In Concord's RR-20 zone, generally the front setback is 25 ft and the minimum lot size is 20,000 sq ft, with the conditions listed below (Concord code, read October 2026).
Key points
- Minimum front setback: 25 ft (Single-family; also no closer than 45 ft to the street centerline (a lower block average may apply))
- Minimum side setback: 10 ft (Single-family interior side; both sides together must total at least 25 ft)
- Minimum rear setback: 30 ft (Single-Family)
- Minimum lot size: 20,000 sq ft (Single-Family)
- Maximum lot coverage: 25% (Single-Family)
RR-20 is a zoning district in Concord. Every value below was read from the Concord 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 RR-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.
| Minimum front setback | 25 ft Applies: Single-family; also no closer than 45 ft to the street centerline (a lower block average may apply) § 18.30.030 · code textTable row “Front”, column “Setbacks (feet) minimum (1, 3, 4)”: 25 |
|---|---|
| Minimum side setback | 10 ft Applies: Single-family interior side; both sides together must total at least 25 ft See note 5 below the table in the code. § 18.30.030 · code textTable row “Interior Side (5)”, column “Setbacks (feet) minimum (1, 3, 4)”: 10 Note 5: Minimum for each side. |
| Minimum rear setback | 30 ft Applies: Single-Family § 18.30.030 · code textTable row “Rear”, column “Setbacks (feet) minimum (1, 3, 4)”: 30 |
| Minimum lot size | 20,000 sq ft Applies: Single-Family § 18.30.030 · code textTable row “Single-Family”, column “Lot Area (square feet) minimum”: 20,000 |
| Maximum lot coverage | 25% Applies: Single-Family § 18.30.030 · code textTable row “Single-Family”, column “Lot Coverage (percent) maximum”: 25 |
Not on this page
We did not find a general height, stories, FAR, density limit for RR-20 in the zoning tables we read. The code may still set one elsewhere — check the Concord Municipal Code.
Other Concord zoning districts
Who this affects
Frequently asked questions
What is the minimum front setback in Concord's RR-20 zone?
25 ft (single-family; also no closer than 45 ft to the street centerline (a lower block average may apply)) — Concord Municipal Code § 18.30.030.
What is the minimum side setback in Concord's RR-20 zone?
10 ft (single-family interior side; both sides together must total at least 25 ft) — Concord Municipal Code § 18.30.030.
What is the minimum rear setback in Concord's RR-20 zone?
30 ft (single-Family) — Concord Municipal Code § 18.30.030.
What is the minimum lot size in Concord's RR-20 zone?
20,000 sq ft (single-Family) — Concord Municipal Code § 18.30.030.
What is the maximum lot coverage in Concord's RR-20 zone?
25% (single-Family) — Concord Municipal Code § 18.30.030.
General information, not legal advice.
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