Boise, ID Building Safety: Childcare Center Rules (2026)
Key Facts
- Residential threshold
- 12 or fewer children
- Adult care threshold
- 5 or fewer persons
- Code section
- IBC Amendment § 305.2.3
- Above threshold
- Must meet Group E/I-4 code
- Effective
- Ord. 44-17, eff. 1-1-2018
Summary
Boise's building code treats a home daycare of 12 or fewer children as an ordinary residential occupancy; larger operations must meet commercial building standards.
305.2.3 Twelve or fewer children in a dwelling unit. A facility such as the above within a dwelling unit and having twelve (12) or fewer children receiving such day care shall be classified as a Group R-3 occupancy or shall comply with the International Residential Code. (Ord. 44-17, 12-19-2017, eff. 1-1-2018; amd. Ord. 39-20, 12-1-2020, eff. 1-1- 2021) 9-1A-46: IBC BUILDING CODE AMENDMENT, SECTION 308.2.4, FIVE OR FEWER PERSONS RECEIVING CUSTODIAL CARE:
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-31: Code current through: Ord. 20-26, passed 6-9-2026).
Full Breakdown
Under Boise's amended building code, a childcare facility inside a one- or two-family dwelling that serves 12 or fewer children is classified as Group R-3 (residential) occupancy and can simply comply with the International Residential Code rather than commercial building requirements. The same threshold applies to adult custodial care (5 or fewer persons). Once a childcare use inside a dwelling exceeds 12 children, or operates as a standalone center, it no longer qualifies for the residential carve-out and must instead meet the commercial IBC standards for Group E (education) or I-4 (day care) occupancies, which bring stricter fire-rating, egress, and life-safety requirements.
Violations & Fines
Operating above the 12-child (or 5-person custodial care) residential threshold without meeting Group E/I-4 commercial building standards is a code violation; the City can deny occupancy approval or building permits until the space is brought up to the applicable commercial standard.
Frequently Asked Questions
Can I run a daycare out of my house in Boise?
What building rules apply to a larger daycare center in Boise?
Sources & Official References
Other rules in Boise
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