Nampa, ID Building Setbacks & Zoning: Structure Height Limits (2026)
Key Facts
- Height limit
- 30 feet (RS district)
- Measured from
- grade to top-floor ceiling
- Accessory structure cap
- 22 feet or principal height
- Same cap also applies
- RA and agricultural districts
Summary
In Nampa's RS single-family residential district, principal structures cannot exceed 30 feet in height, measured from grade to the ceiling of the top floor of the structure.
No principal structure shall exceed 30 feet in height (measured from grade to the ceiling of the top floor of the structure).
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 16 Update 1).
Full Breakdown
Nampa's RS single-family residential zoning district caps principal structures at 30 feet, measured from grade to the ceiling of the top floor of the structure (City Code § 10-8-3). Detached accessory structures are capped lower: no taller than the principal building or 22 feet, whichever is greater, measured from grade to the structure height (§ 10-8-4). The same 30-foot principal-building cap appears in the RA suburban residential district (§ 10-7-2) and the agricultural district (§ 10-6-2), so height limits are consistent across Nampa's residential zones. Taller buildings require rezoning or a variance through the planning and zoning commission.
Violations & Fines
Building without a permit or exceeding the 30-foot height cap can trigger a stop-work order, permit denial, or code enforcement action requiring modification to comply.
Frequently Asked Questions
Does the 30-foot limit apply to accessory buildings too?
Is the height limit the same in other Nampa residential zones?
Sources & Official References
Other rules in Nampa
Compare Nampa to another location·View the Idaho building setbacks & zoning overview
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