Concord · Zoning · CO
Concord CO zoning: height, setbacks and lot size
In Concord's CO zone, generally buildings can be up to 30 ft tall, the front setback is 10 ft and the minimum lot size is 10,000 sq ft, with the conditions listed below (Concord code, read October 2026).
Key points
- Maximum building height: 30 ft (Nonresidential)
- Minimum front setback: 10 ft
- Minimum side setback: 5 ft
- Minimum rear setback: 5 ft
- Minimum lot size: 10,000 sq ft
- Maximum floor area ratio (FAR): 1.0
CO 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 CO
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 Applies: Nonresidential See note 4 below the table in the code. § 18.40.030 · code textTable row “Nonresidential”, column “CO (4)”: 30 Note 4: Standard does not apply to small, independent parcels corresponding to individual dwellings within a larger multifamily residential, mixed-use, or townhome development. |
|---|---|
| Minimum front setback | 10 ft See note 4 below the table in the code. § 18.40.030 · code textTable row “Front”, column “CO (4)”: 10 Note 4: Standard does not apply to small, independent parcels corresponding to individual dwellings within a larger multifamily residential, mixed-use, or townhome development. |
| Minimum side setback | 5 ft See note 4 below the table in the code. § 18.40.030 · code textTable row “Interior Side, Rear”, column “CO (4)”: 5 Note 4: Standard does not apply to small, independent parcels corresponding to individual dwellings within a larger multifamily residential, mixed-use, or townhome development. |
| Minimum rear setback | 5 ft See note 4 below the table in the code. § 18.40.030 · code textTable row “Interior Side, Rear”, column “CO (4)”: 5 Note 4: Standard does not apply to small, independent parcels corresponding to individual dwellings within a larger multifamily residential, mixed-use, or townhome development. |
| Minimum lot size | 10,000 sq ft See note 4 below the table in the code. § 18.40.030 · code textTable row “Lot Area (square feet) minimum”, column “CO (4)”: 10,000 Note 4: Standard does not apply to small, independent parcels corresponding to individual dwellings within a larger multifamily residential, mixed-use, or townhome development. |
| Maximum floor area ratio (FAR) | 1.0 See note 4 below the table in the code. § 18.40.030 · code textTable row “Floor Area Ratio (FAR) (maximum)”, column “CO (4)”: 1.0 Note 4: Standard does not apply to small, independent parcels corresponding to individual dwellings within a larger multifamily residential, mixed-use, or townhome development. |
Uses in CO
Uses the code's use tables allow in CO, or allow with a permit. Each links to its page with the code section.
- Single-family home — Allowed
- Duplex — Allowed
- Apartment building — Needs an use permit (zoning clearance if the project meets the note) — see note
- Rooming or boarding house — Needs an use permit
- Child care center — Needs an use permit
- Church or place of worship — Needs an use permit
- Community garden — Needs an administrative permit
- Growing crops — Allowed
When a different number applies
The code sets other values for particular lots, buildings or locations in CO:
- Maximum building height: 37 ft — Residential and mixed-use housing development projects § 18.40.030
Not on this page
We did not find a general stories, lot coverage, density limit for CO 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 maximum building height in Concord's CO zone?
30 ft (nonresidential) — Concord Municipal Code § 18.40.030.
What is the minimum front setback in Concord's CO zone?
10 ft — Concord Municipal Code § 18.40.030.
What is the minimum side setback in Concord's CO zone?
5 ft — Concord Municipal Code § 18.40.030.
What is the minimum rear setback in Concord's CO zone?
5 ft — Concord Municipal Code § 18.40.030.
What is the minimum lot size in Concord's CO zone?
10,000 sq ft — Concord Municipal Code § 18.40.030.
General information, not legal advice.
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