Idaho Land Use & Zoning
Practice Questions & Answers (2026)

Explanation

A nonconforming use was a legal use that existed before a zoning change was enacted. The use is 'grandfathered in' and may continue, but the property owner generally cannot expand, rebuild, or resume the use after abandonment.

Explanation

A variance grants permission to deviate from specific development standards (such as setbacks, height limits, or lot coverage) when strict application of the standards would cause undue hardship. It does not change the zoning classification.

Explanation

Spot zoning is the arbitrary rezoning of a single parcel differently from surrounding properties without a legitimate public purpose. Courts typically find spot zoning illegal because it benefits a private landowner rather than advancing the general welfare.

Explanation

A conditional use permit (also called a special use permit) allows a use that is not automatically permitted in a zone but may be allowed with specific conditions attached. A bed and breakfast in a residential zone would typically require this permit.

Explanation

Highest and best use is the reasonably probable and legal use of vacant land or improved property that is physically possible, legally permissible, financially feasible, and maximally productive — resulting in the highest value.

Explanation

Idaho's Local Land Use Planning Act requires cities and counties to adopt a comprehensive plan (master plan) that serves as a guide for future land use, growth, and development decisions within their jurisdiction.

Explanation

Mixed-use zoning allows a combination of uses — such as ground-floor retail with upper-floor residential — within the same district or building. It promotes walkability and reduces the need for car travel.

Explanation

A buffer zone is a transitional area between incompatible land uses, such as between an industrial district and a residential neighborhood. It may consist of open space, landscaping, or transitional uses.

Explanation

A setback is a zoning requirement specifying the minimum distance that a structure must be set back from the front, side, or rear property lines. Setbacks create uniform spacing between buildings and property lines.

Explanation

Floor area ratio (FAR) is a zoning regulation that limits the total floor area of a building as a multiple of the lot area. For example, an FAR of 2.0 on a 10,000 sq ft lot allows a maximum of 20,000 sq ft of floor area.