Code amendment · Planning application
Nampa approves code changes allowing ADUs and 1,500-square-foot starter home lots
The zoning changes follow a new Idaho law taking effect July 1, 2026. They allow accessory dwelling units on single-family lots and create a starter home subdivision option on sites of at least four acres. The City Council decision came Sept. 8.
From the filing
The application's description as it appears in City of Nampa's record. See the official record
The City of Nampa proposes changes to its zoning code to comply with new Idaho state law taking effect July 1, 2026. The changes allow accessory dwelling units (ADUs) on single-family lots, replace the city's manufactured home rules with ADU standards, and create a new Starter Home Subdivision option with 1,500-square-foot lots on sites of at least four acres. This is a citywide rule change, not a specific building project.
Project name on file: State Code compliance for ADU's & Starter Home Subs
Timeline
Sept. 9, 2026
11 documents added
Sept. 9, 2026
Staff Report Preparation
Sept. 9, 2026
City Council Decision/Action Letter
Sept. 8, 2026
Decision: Approved
Nampa City Council: Approved.
Sept. 8, 2026
Public hearing: Nampa City Council
Aug. 12, 2026
Set Date for Public Hearing
Aug. 12, 2026
P&Z Commision Decision/Action Letter
Aug. 12, 2026
Staff Report Preparation
Aug. 11, 2026
Public hearing: Nampa Planning and Zoning Commission
April 14, 2026
Application filed
Documents
Staff reports
- Download Staff report on ADU and starter home subdivision text amendments
Staff report for the Sept. 8, 2026 Council hearing on zoning text amendments adding accessory dwelling unit and starter home subdivision standards, with conclusions of law and motions.
Sept. 9, 2026 · 14 pages · 611 KB · Available Online
- Download Staff report on ADU and starter home subdivision code amendments
Planning staff report recommending approval of Nampa zoning text amendments adding Accessory Dwelling Unit and Starter Home Subdivision standards per Idaho State Code, with proposed findings.
Aug. 12, 2026 · 10 pages · 424 KB · Available Online
Decisions
- Download City Council action memo on ADU and starter home text amendments
Memo reporting City Council approval of code text amendments adding accessory dwelling unit, tiny house, and starter home subdivision standards, following Planning and Zoning Commission recommendation.
Sept. 9, 2026 · 1 page · 198 KB · Available Online
- Download Planning and Zoning action memo on ADU and starter home amendments
Memo reporting the Aug. 11, 2026 Commission vote recommending City Council approval of code text amendments for accessory dwelling units, tiny houses, RVs and starter home subdivisions.
Aug. 12, 2026 · 1 page · 197 KB · Available Online
Other documents
- Download Title 4, Chapter 2 building code redlines
Redlined draft of Nampa's Title 4, Chapter 2 building code, adopting the 2018 IBC, IRC, IEBC and IECC with Idaho amendments.
Sept. 9, 2026 · 4 pages · 192 KB · Available Online
- Download Chapter 1, General provisions
Chapter 1 of the proposed zoning code text amendment, covering general provisions.
Aug. 12, 2026 · 2.1 MB · Available Online
- Download Chapter 27 subdivisions
Aug. 12, 2026 · 155 KB · Available Online
- Download Chapter 29 accessory dwelling units final draft
Aug. 12, 2026 · 31 KB · Available Online
- Download Chapter 3, land use
Aug. 12, 2026 · 180 KB · Available Online
- Download Senate Bill 1352 on starter home subdivisions, as amended
Text of Idaho Senate Bill 1352 adding a state code section that requires cities to allow starter home subdivisions with small lots and reduced setbacks.
Aug. 12, 2026 · 2 pages · 50 KB · Available Online
- Download Senate Bill 1354 on accessory dwelling units (as amended)
Amends Idaho Code on accessory dwelling units, limiting HOA restrictions on internal ADUs and adding a new section defining ADUs.
Aug. 12, 2026 · 3 pages · 57 KB · Available Online

