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Nampa, ID Building Setbacks & Zoning: Setback Rules (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Front setback (RS district)
20 ft to garage, 15 ft to living area
Side setback
5 feet
Rear setback, standard lot
15 feet
Rear setback, RS-4/split corner lot
5 feet
Alley-side setback
15 ft from alley centerline

Summary

Nampa's RS single-family district sets front, side, rear, and alley setbacks by feet, with tighter rear setbacks on RS-4 lots and split corner lots.

Required front setbacks 20 feet to garage wall 15 feet to living area. Required setback abutting public right-of-way (Street Side) 10 feet. Required side setbacks 5 feet. Required setback abutting public right-of-way (Alley Side) 15 feet from alley centerline. Required rear setbacks for standard buildable lot 15 feet. Required rear setbacks for a RS 4 zoned property or corner lot that has been split 5 feet.

View official code

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

In the RS single-family residential district, Nampa City Code requires a 20-foot front setback to a garage wall (15 feet to living area), 5-foot side setbacks, a 15-foot rear setback on a standard buildable lot (reduced to 5 feet on an RS-4 zoned property or a split corner lot), 10 feet along a street-side right-of-way, and 15 feet from an alley centerline. Detached accessory structures over 200 square feet must meet the same front, side, and rear setbacks as the principal structure. Setbacks are measured from the property line or a future right-of-way where the city engineer has determined one.

Violations & Fines

Building without meeting the platted setback triggers a stop-work order and permit denial from the Nampa planning and zoning division; encroachments can be required to be removed or relocated before final inspection.

Frequently Asked Questions

Do these setbacks apply citywide in Nampa?
They apply specifically to property zoned RS (single-family residential); other Nampa zoning districts set their own setback tables in their respective Title 10 chapters.
Can an accessory structure sit closer to the property line than the house?
No portion of an accessory structure may be closer to the front property line than any covered part of the principal house, per Nampa City Code section 10-8-4.

Sources & Official References

Other rules in Nampa

Lot Coverage LimitsFew RestrictionsStructure Height LimitsSome RestrictionsFence Regulations: Fence Permit RequirementsSome RestrictionsPublic Conduct: Skateboarding RulesSignificant RestrictionsPublic Conduct: Public UrinationSome RestrictionsPublic Conduct: Loitering RulesSome RestrictionsPublic Conduct: Aggressive PanhandlingSignificant RestrictionsBusiness Licensing & Operations: Tattoo & Body ModificationSome Restrictions

All Nampa rules

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