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Idaho SB 1352 — Starter-Home Subdivisions (Cities ≥10,000) (ID)

Tracked preemption from the Idaho overlay bundle.

Overview

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Effective
2026-07-01
Sunset
—
Authority
state
Scope
state:ID
Other Idaho preemptions
Idaho SB 1354 — ADU By-Right (Cities ≥10,000)Idaho HB 707 — Administrative Lot Splits (Cities ≥10,000)Idaho HB 706 — Single-Stair Building Option (City Opt-In)Idaho HB 585 — Permit Inspection Shot-Clock (Statewide)Idaho Dillon's Rule — Inclusionary Zoning Mandates Ultra Vires (Mountain Central v. McCall, 2021)Idaho §67-6539 — Short-Term Rental Preemption (HB 216, 2017; HB 583, 2026)Idaho §67-6509A — Manufactured Housing Parity (extended by HB 800, 2026)Idaho Development Impact Fee Act (I.C. §67-8201 et seq.)
Primary-source summary
SB 1352 — Starter-home subdivisions (effective 2026-07-01)

Trigger predicate

When this evaluates true for a parcel, the law's preempted fields take precedence over base zoning.

city.population ≥ 10000

Preempted fields

4 fields on the base district schema are rewritten when the trigger fires.

FieldOpValueNote
base_districts[category=res_sf].min_lot_size_sf_starter_homecap_at1500Minimum lot size capped at 1,500 sf for qualifying starter-home subdivisions
base_districts[category=res_sf].max_density_du_per_acre_starter_homefloor_at12Up to 12 du/ac required on starter-home developments ≥4 acres
starter_home_subdivision_path_requiredoverrideTrue
infrastructure_capacity_denial_basisoverridedocumented_water_sewer_road_los_onlyCities retain denial authority only on documented infrastructure capacity (water, sewer, road LOS)

Citation

Authority source
Idaho SB 1352 (2026)
§ 2026 Idaho Session Laws — SB 1352
https://legislature.idaho.gov/sessioninfo/2026/legislation/S1352/

Research notes

Part of the March 2026 housing-reform package. Applies to cities ≥10,000 population. First Idaho statewide upzoning preemption — contradicts the prior characterization of Idaho as lacking a Montana-style preemption package.