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

Sec. 49.13 - Standards for proposed accessory structures attached to an existing or…

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

(a)

A proposed accessory structure with a floor area less than fifty percent of the accessory dwelling unit floor area:

a.

Shall be processed ministerially in conjunction with the accessory dwelling unit.

b.

Shall comply with the lot coverage and setback requirements of this section.

(b)

A proposed accessory structure with a floor area that exceeds fifty percent of the total floor area of the accessory dwelling unit:

a.

Is subject to any discretionary review required by this zoning code.

b.

Shall comply with lot coverage, height, and setback requirements for an accessory structure in the applicable standard zoning district or the most similar standard zoning district.

Junior accessory dwelling unit.

The following provisions are intended to set standards, in compliance with California Government Code Section 65852.22, for the development of junior accessory dwelling units so as to increase the supply of smaller and affordable housing while ensuring that such housing remains compatible with the existing neighborhood. This section does not intend to override lawful use restrictions as set forth in conditions, covenants and restrictions.

(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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