Linn County, IA Swimming Pools & Spas: Fencing & Safety Requirements (2026)
Key Facts
- State Code
- Iowa Code Ch. 103A (IRC)
- Min Height
- 4 ft barrier
- Openings
- No 4-inch sphere passage
- Gates
- Self-closing, self-latching
- Permit
- Linn County Building Dept
Summary
Iowa adopts the IRC under Iowa Code Chapter 103A (State Building Code). Residential pool barriers must be at least 4 ft high with no openings allowing a 4-inch sphere. Linn County enforces these standards in unincorporated areas through its building permit process.
Fencing. (1) Except for a fill and drain wading pool, a circulated wading pool that is drained when not in use, or a spray pad, a swimming pool shall be enclosed by a fence, wall, building, or combination thereof not less than 4 ft high. The enclosure shall be constructed of durable materials. (2) A fence, wall, or other means of enclosure shall have no openings that would allow the passage of a 4-inch sphere, and shall not be easily climbable by toddlers. The distance between the ground and the top of the lowest horizontal support accessible from outside the facility, or between the two lowest horizontal supports accessible from outside the facility, shall be at least 45 inches. (3) At least one gate or door with an opening of at least 36 inches in width shall be provided for emergency purposes. ... Except where lifeguard or structured program supervision is provided whenever the swimming pool is open, gates and doors shall be self-closing and self-latching.
Official source re-checked September 8, 2026: the cited page had not changed since it was quoted.
Full Breakdown
Iowa Code Chapter 103A establishes the State Building Code with the State Building Code Commissioner adopting the International Residential Code (IRC) as the baseline residential standard. Iowa Administrative Code 641 Chapter 15 (Swimming Pools and Spas) requires barriers not less than 4 feet high with openings that do not pass a 4-inch sphere, and requires self-closing, self-latching gates at least 36 inches wide. Linn County Building Department issues building permits under UDC Chapter 105 (Building and Building Regulations) for pool installations in unincorporated areas. Cities within Linn County may adopt stricter standards.
Violations & Fines
Construction without a building permit or with a non-compliant barrier is enforced under Linn County UDC Chapter 105. Stop-work orders and re-inspection fees may apply.
Frequently Asked Questions
How tall must my pool fence be?
Do I need a permit?
Sources & Official References
Other rules in Linn County
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