Title 8 — ZONING›Division 84 — LAND USE DISTRICTS
Chapter 84-10 — R-12 SINGLE-FAMILY RESIDENTIAL DISTRICT
Contra Costa County Municipal Code · 2026-09 edition · updated 2026-10-02 · Contra Costa County
84-10.202 - General provisions.¶
All land within an R-12 single-family residential district may be used for any of the following uses, under the following regulations set forth in this chapter.
(Ord. 1569: Ord. 1482: prior code § 8144.5 (part)).
Article 84-10.4. Uses
84-10.402 - Uses—Permitted.¶
Uses permitted in the R-12 district shall be: All the uses designated for the R-6 district in Section 84-4.402.
(Ord. 68-25 § 2, 1968: Ord. 1569: Ord. 1482: prior code § 8144.5(a)).
84-10.404 - Uses—Requiring land use permit.¶
In the R-12 district the following uses are permitted on the issuance of a land use permit: All the uses designated for the R-6 district in Section 84-4.404.
(Ord. 1569: Ord. 1482: prior code § 8144.5(b)).
Article 84-10.6. Lots
84-10.602 - Lot — Area.¶
No single-family dwelling or other structure permitted in the R-12 district shall be erected or placed on a lot smaller than twelve thousand square feet in area.
(Ord. 1569: Ord. 1482: prior code § 8144.5(c)).
84-10.604 - Lot—Width.¶
No single-family dwelling or other structure permitted in the R-12 district shall be erected or placed on a lot less than one hundred feet in average width.
(Ord. 1569: Ord. 1482: prior code § 8144.5(d)).
84-10.606 - Lot—Depth.¶
No single-family dwelling or other structure permitted in the R-12 district shall be erected on a lot less than one hundred feet deep.
(Ord. 1569: Ord. 1482: prior code § 8144.5(e)).
Article 84-10.8. Building Height
84-10.802 - Building height—Maximum.¶
Building height provisions for the R-12 district shall be the same as those for the R-6 district in Section 84- 4.802.
(Ord. 1569: Ord. 1482: prior code § 8144.5(f)).
Article 84-10.10. Yards
84-10.1002 - Yard—Side.
There shall be an aggregate side yard width of at least twenty-five feet. No side yard shall be less than ten feet wide. These minima may be reduced to three feet for an accessory building or structure if it is set back at least sixty-five feet from the front property line.
(Ord. 1569: Ord. 1482: prior code § 8144.5(g)).
84-10.1004 - Yard—Setback.
Setback (front yard) provisions for the R-12 district shall be the same as those for the R-6 district (Section 84-4.1004).
(Ord. 1569: Ord. 1482: prior code § 8144.5(h)).
84-10.1006 - Yard—Rear.
Rear yard provisions for the R-12 district shall be the same as those for the R-6 district (84-4.1006).
(Ord. 1569: Ord. 1482: prior code § 8144.5(i)).
Article 84-10.12. Off-Street Parking
84-10.1202 - Off-street parking—Space requirements.
Off-street parking provisions for the R-12 district shall be the same as those for the R-6 district (84-4.1202).
(Ord. 71-59 §§ 4, 5, 1971: Ord. 1569: Ord. 1482: prior code § 8144.5(j)).
Article 84-10.14. Land Use and Variance Permits
84-10.1402 - Land use and variance permit—Granting.
Land use permits for the special uses enumerated in Section 84-10.404, and variance permits to modify the provisions in Sections 84-4.402(5) and 84-10.602 — 84-10.1202, may be granted in accordance with
Chapters 26-2 and 82-6.
(Ords. 77-51 § 6, 1482: prior code § 8144.5(k)).
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