Area of City Impact Discussion Paper
Send comments and questions to rachel@idahosmartgrowth.org or 208-333-8066
Summary of current law
Idaho Code § 67-6526 mandates “the governing board of each county and each city therein” shall
adopt a map with area of city impact and ordinances. “The boundaries of the area of impact are
negotiated between the affected city and county.” (Idaho Land Use Handbook, Givens Pursley)
Under Idaho Code § 67-6526(a), the city and county are required to adopt ordinances specifying
which comprehensive plan and land use ordinances will apply within the area of impact
and they
are free to select either the city’s, the county’s, or some combination or variation. (Idaho Land Use
Handbook, Givens Pursley) In rare instances, an area of city impact may cross a county boundary.
Idaho Code § 67-6526(a).
The “Idaho Land Use Handbook” also provides this following information:
“Whatever plans and ordinances are made applicable within the area of city impact, they will be enforced
by the county. This is true even if the city’s ordinances are declared applicable.
This is necessary because
article XII, section 2 of the Idaho Constitution prevents a city from exercising jurisdiction outside its
boundaries. Reardon v. Magic Valley Sand and Gravel, Inc., 140 Idaho 115, 120, 90 P.3d 340, 345 (2004)
(awarding attorney fees against a city and county for adopting ordinances which purported to authorize the
city to exercise jurisdiction within its area of city impact: “This Court recognized as far back as 1949 that a
city’s exercise of jurisdiction in an impact area lying beyond a city’s limits is inconsistent with the
constitutional limitations placed on a city’s powers by Article XII, § 2 of the Idaho Constitution.”).
Summary of themes from survey
Agreement that urban development belongs in cities
AOIs should be based on the ability to provide services within a realistic timeframe
Important to include affected landowners in AOI decisions
Majority felt annexations should not occur outside AOIs
Majority feel state law is not adequate in its intent and direction to cities and counties
regarding AOIs
The current process is filled with conflict for many jurisdictions
Wide range of how AOI expansions are planned
Many issues/tension around AOI and annexation
A Few Idaho Examples
1. Annexations outside AOIs
Over the last few years, City A has annexed property in the established (County approved)
Area of Impact for City B. Under previous administrations, both cities had agreed on the
Idaho Attorney General’s Opinion, OAG 95-1 (opining that both the city and county must adopt an ordinance for an annexation to
be effective).
“Areas of city impact, together with plan and ordinance requirements, may cross county boundaries by agreement of the city and
county concerned if the city is within three (3) miles of the adjoining county.” Idaho Code § 67-6526(a).
Cf., Evans v. Teton County, 139 Idaho 71, 73 P.3d 84 (2003), in which the Court noted in passing (and without apparent concern)
that the Area of Impact Agreement between Teton County and the City of Driggs called for both governing bodies to review and approve
plats and zone changes.
The reference to 1949 presumably refers to Clyde Hess Distrib. Co. v. Bonneville County, 69 Idaho 505, 210 P.2d 798 (1949),
which is mentioned in Blaha v. Eagle City Council (“Blaha I”), 134 Idaho 768, 769, 9 P.3d 1234, 1235 (2000) and Blaha v. Bd. of Ada
County Comm’rs (“Blaha II”), 134 Idaho 770, 777, 9 P.3d 1236, 1243 (2000). Clyde Hess, was not a land use case. It dealt with the division
of authority among the city, county, and state to regulate the sale of beer. Blaha I was the first case to address the division of authority
between city and county with respect to areas of city impact.