Earlier editions: 2026-09
Title 17 — ZONING›Article III — SITE PLANNING STANDARDS
Ione Municipal Code Ch. 17.38 Accessory Structures
Ione Municipal Code · 2026-10 edition · updated 2026-10-04 · Ione
Cite as: Ione Municipal Code Chapter 17.38 · Text as of 2026-10-04
17.38.010 - Purpose.¶
The purpose of this chapter is to identify and regulate detached accessory structures to ensure that such structures do not create a public safety issue or public nuisance and do not create an adverse aesthetic from street right-of-ways or adjacent/neighboring properties. The intent of these regulations is to complement the requirements and standards of the city's adopted building code and fire code.
(Ord. No. 528, 2-15-2022)
17.38.020 - Definitions.¶
Terms unique to this chapter are listed in Chapter 17.300 (Glossary of Terms).
(Ord. No. 528, 2-15-2022)
17.38.030 - Permit requirements and exceptions.¶
Generally, no special planning permit or entitlement shall be required for accessory structures that are consistent with the standards herein, except that zoning clearance/plan check shall be conducted in the event that a building permit is required. Even if a building permit is not required a planning permit or entitlement may be. Certain structures may require site plan review, variance, or other permits or entitlements as specified in Chapter 17.10 (Permit and Entitlements).
(Ord. No. 528, 2-15-2022)
17.38.040 - Development standards.¶
A. General development standards for all accessory structures. The development standards in this section shall only apply to accessory structures. Primary structures, and any other feature attached to the primary structure (e.g., patio cover), are subject to the setback, height, and other requirements for the zoning district in which they are located.
Setback measurement. Minimum setback distances for accessory structures from property lines and between all structures shall be measured to any portion of the structure(s), inclusive of overhangs, projections, railings, etc.
Construction phasing. Accessory structures may be constructed only in conjunction with or after construction of the primary building(s) on the site. However, in agricultural and residential zoning districts, accessory structures may be constructed prior to the primary residential dwelling.
Maximum coverage. The total size of all accessory structure(s) on a lot may not exceed 30 percent of the actual rear yard area.
B. Development standards by type of accessory structure. Table 17.38.040-1 (development standards for accessory structures) establishes development standards based on the type of accessory structure as defined in Chapter 17.300 (Glossary of Terms).
Table 17.38.040-1: Development Standards for Accessory Structures
| Accessory Structure | Minimum Setback Distance From Property Line | Minimum Setback Distance From Property Line | Minimum Setback Distance From Property Line | Minimum Distance Between Structures | Maximum Height |
|---|---|---|---|---|---|
| Accessory Structure | Front | Street Side | Interior (including rear) | Minimum Distance Between Structures | Maximum Height |
| Accessory Buildings | |||||
| ≤ 120 s.f. and < 8 ft. tall | 60% or 90 ft., whichever is less 2 | 10 ft. 3 | 3 ft. | No minimum 5 | 8 ft. |
| ≤ 120 s.f. and ≥ 8 ft. tall | 60% or 90 ft., whichever is less 2 | 10 ft. 3 | 5 ft. | No minimum 5 | 16 ft. |
| > 120 s.f. and fully enclosed | 60% or 90 ft., whichever is less 2 | 10 ft. 3 | 5 ft. | No minimum 5 | 35 ft./2 stories |
| > 120 s.f. and w/ |
60% or 90 ft., whichever is less 2 | 10 ft. 3 | 5 ft. | No minimum 5 | 35 ft./2 stories |
| Landscape Features | No minimum | 10 ft. | 3 ft. | No minimum 5 | 16 ft. |
| Pools/spas | Same as for Primary Structure | 5 ft. 4 | 5 ft. 4 | 5 ft. | 16 ft. |
| Deck/Patio | No minimum | No minimum | No minimum | No minimum 5 | No minimum |
| Play Equipment | Same as for Primary Structure | 10 ft. | 3 ft. | No minimum 5 | 16 ft. |
Notes:
- Detached garages may be attached to a primary structure and may encroach into the required rear yard for the primary structure by not more than 15 feet if:
• It is less than 600 square feet in area;
• It shares a common wall of not less than five feet in length with the primary structure or is not located not more than six feet from the primary structure; and
• It is connected to the primary structure by a roof of not less than five feet in width.
An accessory structure may be located within the front 60 percent of the lot if it is screened from view by a fence or landscaping and is located a minimum of ten feet behind said screening.
On reverse corner lots, the street side yard setback shall be the same as the front yard setback for the adjacent key lot.
Measurement form water's edge. Related equipment shall be setback a minimum of three feet from all side and rear property lines.
See the city-adopted building code for separation requirements.
(Ord. No. 528, 2-15-2022)
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