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Article 49 — Accessory Dwelling Units and Junior Accessory Dwelling Units.

Sec. 49.19. - Development standards.

Colusa Zoning Code · 2026-06 edition · updated 2026-09-09 · Colusa

A junior accessory dwelling unit permit shall be issued only if the unit complies with the following development standards:

(a)

Maximum floor area. The junior accessory dwelling unit shall not exceed five hundred square feet in total floor area.

(b)

Existing development. The junior accessory dwelling unit shall be contained entirely within the existing walls of an existing or proposed single-family dwelling, which includes the walls of an attached garage. However, an additional one hundred fifty square feet is permitted to allow for a separate entrance into the unit.

(c)

Kitchen. The junior accessory dwelling unit must contain an efficiency kitchen as defined by the Government Code Section 66333(f)(1) and (f)(2)

(d)

Sanitation. Bathroom facilities may be separate from or shared with the single-family dwelling. A separate bathroom facility shall be provided if the junior accessory dwelling unit does not include an interior entry into the primary residence.

(e)

Entrance. The junior accessory dwelling unit shall include an exterior entrance separate from the main entrance to the single-family dwelling. The junior accessory dwelling unit may include a second interior doorway for sound attenuation.

(f)

Parking. Off-street parking shall not be required for junior accessory dwelling units. No replacement offstreet parking spaces are required when a junior accessory dwelling unit is created through the conversion or demolition of an attached garage, carport or covered parking structure.

(Ord. No. 568, 5-20-2025)

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▸Contents — Colusa Zoning Code
Colusa Zoning Code
  1. Article 1 — Findings and Adoption of Zoning (District) Plan.
  2. Article 2 — Designation of Districts.
  3. Article 3 — Establishment of Districts.
  4. Article 4 — Definitions.
  5. Article 5 — R-1 Single Family Residence District—Regulations.
  6. Article 8 — R-4 General Apartment District—Regulations.
  7. Article 9 — C-N Neighborhood Business District—Regulations.
  8. Article 10 — C-G General Commercial District—Regulations.
  9. Article 11 — C-H Highway Service Commercial District— Regulati…
  10. Article 12 — M-1 Light Industrial District—Regulations.
  11. Article 13 — M-2 General Industrial District—Regulations.
  12. Article 14 — M-L Limited Manufacturing District—Regulations.
  13. Article 15 — P-D Planned Development District—Regulations.
  14. Article 16 — P-F Public Facilities District—Regulations.
  15. Article 17 — O-S Open Space District—Regulations.
  16. Article 18 — F-W Floodway District—Regulations.
  17. Article 19 — "A" Agricultural Combining Districts—Regulations.
  18. Article 20 — "B" Special Building Site Combining District— Reg…
  19. Article 21 — "CD" Special Civic District Combining District— R…
  20. Article 21.5 — Cannabis Regulations.
  21. Article 22 — "F" Special Highway Frontage Combining District— …
  22. Article 23 — "FP" Special Floodplain Combining District—
  23. Article 24 — "H" Special Height Combining District—Regulations.
  24. Article 25 — "P" Special Parking Combining District—Regulations.
  25. Article 26 — "O" Special Divided Ownership—Regulations.
  26. Article 27 — "A-O" Special Adult-Oriented Combining District— …
  27. Article 28 — Fire Zones.
  28. Article 29 — Off-Street Parking Requirements.
  29. Article 30 — Landmark and Historic Preservation.
  30. Article 31 — Outdoor Advertising and Sign Regulations.
  31. Article 33 — Use Permits.
  32. Article 34 — Variances.
  33. Article 35 — Nonconforming Uses.
  34. Article 36 — Amendments, Alterations, Changes in Districts.
  35. Article 37 — Enforcement, Legal Procedure, Penalties.
  36. Article 38 — Repealing.
  37. Article 39 — Floodplain Management.
  38. Article 40 — Dedication of Lands for Park and Recreational Pur…
  39. Article 41 — Density Bonus.
  40. Article 41.5 — By Right Housing Projects.
  41. Article 42 — High Density Housing Combining District.
  42. Article 43 — Reasonable Accommodations.
  43. Article 44 — "M-U-B" Bridge Street Mixed-Use District— Regulat…
  44. Article 45 — "M-U-D" Downtown Mixed Use District—Regulations.
  45. Article 46 — "M-U-M" Main Street Mixed Use District—Regulations.
  46. Article 47 — "M-U-R" Residential Mixed-Use District—Regulations.
  47. Article 48 — Mixed Use Districts Table.
  48. ▸Article 49 — Accessory Dwelling Units and Junior Accessory Dwe…
    Overview
    1. Sec. 49.01. - General requirements.
    2. Sec. 49.02. - Reserved.
    3. Sec. 49.03. - Permit requirements.
    4. Sec. 49.04. - Accessory dwelling units—Application and process…
    5. Sec. 49.05. - Utility connections and fees.
    6. Sec. 49.06. - Accessory development standards.
    7. Sec. 49.07. - Maximum floor area.
    8. Sec. 49.08. - Height limit.
    9. Sec. 49.09. - Lot coverage.
    10. Sec. 49.10. - Architectural objective.
    11. Sec. 49.12. - Parking.
    12. Sec. 49.13 - Standards for proposed accessory structures attac…
    13. Sec. 49.14. - General requirements.
    14. Sec. 49.15. - Reserved
    15. Sec. 49.16. - Permit requirements.
    16. Sec. 49.17. - Application and processing requirements.
    17. Sec. 49.18. - Utility connection fees.
    18. Sec. 49.19. - Development standards.
    19. Sec. 49.20. - Deed restrictions.

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