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

Sec. 49.17. - Application and processing requirements.

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

(a)

Step One—Submittal. The application for a junior accessory dwelling unit permit shall be submitted to the department concurrent with an application for a building permit. In addition to the standard submittal requirements for a building permit, an application for a junior accessory dwelling unit permit shall include all the following:

a.

Plot plan. If any expansion of the foundation is required for a junior accessory dwelling unit, a plot plan, drawn to scale, showing the dimensions of the perimeter of the parcel proposed for the junior accessory dwelling unit; the location and dimensioned setbacks of all existing and proposed structures on the site and structures located within fifty feet of the site; all easements, building envelopes, and special requirements of the subdivision as shown on the final map and improvement plans, if any; and average slope calculations for the site.

b.

Floor plan. A floor plan, drawn to scale, showing the dimensions of each room, the area devoted to the junior accessory dwelling unit, and the resulting floor areas of the junior accessory dwelling unit and of the primary residence. The use of each room shall be identified, and the size and location of all windows and doors shall be clearly shown. The plan shall identify whether separate or shared sanitation facilities are proposed.

c.

Deed restrictions. Deed restrictions completed, signed and ready for recordation in compliance with subsection G.

(b)

Step Two—Decision. The department shall approve or deny an application for a junior accessory dwelling unit permit within sixty days of submittal of a complete application. A junior accessory dwelling unit permit shall be issued only if the proposed junior accessory dwelling unit complies with all applicable standards in this section. A permit for a junior accessory dwelling unit shall not be denied due to the correction of nonconforming zoning conditions, building code violations, or unpermitted structures that do not present a threat to public health and safety and are not affected by the construction of the junior accessory dwelling unit.

(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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