Concord · Zoning · RM
Concord RM zoning: height, setbacks and lot size
In Concord's RM zone, generally buildings can be up to 40 ft tall, the front setback is 5 ft and the minimum lot size is 1,440 sq ft, with the conditions listed below (Concord code, read October 2026).
Key points
- Maximum building height: 40 ft (Residential)
- Minimum front setback: 5 ft (Residential)
- Minimum side setback: 5 ft (Residential)
- Minimum rear setback: 6 ft (Residential)
- Minimum lot size: 1,440 sq ft (Residential)
- Maximum lot coverage: 80% (Residential; attached)
RM 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 RM
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 | 40 ft Applies: Residential See notes 4, 5 below the table in the code. § 18.30.040 · code textTable row “Residential”, column “RM (4)(5)”: 40 Note 4: Standard does not apply to small, independent parcels corresponding to individual dwellings within a larger multifamily residential, mixed-use, or townhome development. Note 5: Additional requirements may apply pursuant to Chapter 18.120 CDC (Affirmatively Furthering Fair Housing Overlay District). |
|---|---|
| Minimum front setback | 5 ft Applies: Residential See notes 4, 5 below the table in the code. § 18.30.040 · code textTable row “Front, minimum”, column “RM (4)(5)”: 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. Note 5: Additional requirements may apply pursuant to Chapter 18.120 CDC (Affirmatively Furthering Fair Housing Overlay District). |
| Minimum side setback | 5 ft Applies: Residential See notes 4, 5 below the table in the code. § 18.30.040 · code textTable row “Interior Side, minimum”, column “RM (4)(5)”: 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. Note 5: Additional requirements may apply pursuant to Chapter 18.120 CDC (Affirmatively Furthering Fair Housing Overlay District). |
| Minimum rear setback | 6 ft Applies: Residential See notes 4, 5 below the table in the code. § 18.30.040 · code textTable row “Rear , minimum”, column “RM (4)(5)”: 6 Note 4: Standard does not apply to small, independent parcels corresponding to individual dwellings within a larger multifamily residential, mixed-use, or townhome development. Note 5: Additional requirements may apply pursuant to Chapter 18.120 CDC (Affirmatively Furthering Fair Housing Overlay District). |
| Minimum lot size | 1,440 sq ft Applies: Residential See notes 4, 5 below the table in the code. § 18.30.040 · code textTable row “Residential”, column “RM (4)(5)”: 1,440 Note 4: Standard does not apply to small, independent parcels corresponding to individual dwellings within a larger multifamily residential, mixed-use, or townhome development. Note 5: Additional requirements may apply pursuant to Chapter 18.120 CDC (Affirmatively Furthering Fair Housing Overlay District). |
| Maximum lot coverage | 80% Applies: Residential; attached See notes 4, 5 below the table in the code. § 18.30.040 · code textTable row “Residential”, column “RM (4)(5)”: 80 attached 60 detached Note 4: Standard does not apply to small, independent parcels corresponding to individual dwellings within a larger multifamily residential, mixed-use, or townhome development. Note 5: Additional requirements may apply pursuant to Chapter 18.120 CDC (Affirmatively Furthering Fair Housing Overlay District). |
Uses in RM
Uses the code's use tables allow in RM, or allow with a permit. Each links to its page with the code section.
- Duplex — Allowed — see note
- Apartment building — Allowed
- Rooming or boarding house — Needs an use permit
- Residential care home (7 or more) — Needs a minor 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 RM:
- Maximum lot coverage: 60% — Residential; detached § 18.30.040
Not on this page
We did not find a general stories, FAR, density limit for RM 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 RM zone?
40 ft (residential) — Concord Municipal Code § 18.30.040.
What is the minimum front setback in Concord's RM zone?
5 ft (residential) — Concord Municipal Code § 18.30.040.
What is the minimum side setback in Concord's RM zone?
5 ft (residential) — Concord Municipal Code § 18.30.040.
What is the minimum rear setback in Concord's RM zone?
6 ft (residential) — Concord Municipal Code § 18.30.040.
What is the minimum lot size in Concord's RM zone?
1,440 sq ft (residential) — Concord Municipal Code § 18.30.040.
General information, not legal advice.
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