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Accessory use · Planning application

Approved: 480 square feet of outbuilding converted to living space

Ada County Development Services approved a staff-level zoning permit on Dec. 18 to convert 480 square feet of an existing detached accessory structure into living space, alongside an attached garage and covered porch or patio totaling 1,536 square feet.

ApprovedDecided Dec. 18, 2025202502363Ten Mile Creek · 11139 W Gila Dr

Variance · Planning application

County approves variance to keep barn 12 feet from rear property line

The Ada County Board of County Commissioners approved a variance for an agricultural barn that sits about 12 feet from the rear line, where 25 feet is normally required. Building permits are required for any new structures and for unpermitted buildings over 200 square feet.

ApprovedDecided Jan. 14, 2026202502359Dry Creek Valley · 6263 W Long Branch Ln

Development review · Planning application

Warehouse for wood product storage and distribution approved

Ada County Development Services approved a master site plan on Jan. 9 to develop the property for warehousing that stores and distributes wood products locally. The decision was made by staff.

ApprovedDecided Jan. 9, 2026202502344Ada County · 4502 S Henry St

Variance · Planning application

Board denies bid to shift property line between two residential lots

On Feb. 24, the county board denied moving the line between two platted lots, which would have grown one lot to 10.28 acres and shrunk the other to 7.89 acres, plus a variance. Findings cite a special privilege and no shown undue hardship; no new buildings were proposed.

ApprovedDecided Feb. 24, 2026202502329Ada County · 404 S Silver Moon Ln

Subdivision · Planning application

Gravel pit on 171 acres approved by Ada County commission

Ada County's Planning and Zoning Commission approved on Feb. 12 a gravel pit with rock crushing, asphalt mixing and concrete batching, a 1,360-square-foot office, and a split into two roughly 50-acre parcels. Conditions include a paved private road entrance and daily dust control.

ApprovedDecided Feb. 12, 2026202502315Southeast Ada County · E Blacks Creek Rd

Subdivision · Planning application

Final plat sought for 3-lot subdivision on 29.6 acres

The application asks Ada County to approve the final plat dividing a 29.6-acre rural residential property into three lots. It is under review, and the county has not yet issued a decision.

In reviewFiled Nov. 25, 2025202400187-BWest Foothills · 5278 N Gooder John Ln

Conditional use · Planning application

Idaho Power substation approved by county planning commission

The substation would occupy about 5 acres, start with one transformer with room for up to three, and reach 120 megawatts at full build-out. Construction is expected to begin in 2029, subject to conditions on dust, noise, drainage and screening.

ApprovedDecided March 12, 2026202502304Blacks Creek

Preliminary plat (time extension) · Planning application

Extension approved for 12-lot commercial subdivision plan

Ada County commissioners approved a final two-year extension of a 2006 preliminary plat covering about 11.4 acres, running to Jan. 14, 2028. The extension gives new property owners time to file their own plans for the commercial lots.

ApprovedDecided Jan. 14, 2026200600071-CSouthwest Community · W Lake Hazel Rd

Conditional use · Planning application

Outdoor-only storage for campers, boats and UTVs approved

Plantation Construction & Management's 11.59-acre facility will be built in three phases on compacted gravel, screened by a berm and fence. The Ada County Planning and Zoning Commission approved it Jan. 15 with conditions, including a lighting plan and vehicles spaced at least 10 feet apart.

ApprovedDecided Jan. 15, 2026202502283Ada County

Accessory use · Planning application

Approved: 2,880-square-foot personal shop and storage building

Ada County Development Services approved a zoning permit on Jan. 2 for a 48-by-60-foot accessory building with a 48-by-12-foot lean-to roof, for personal shop and storage use only. The building may not have plumbing, be used commercially or as a dwelling.

ApprovedDecided Jan. 2, 2026202502273West Foothills · 4831 N Skyline Dr

Development review · Planning application

Contractor's yard proposed on rural lot, with variance for lot size and setbacks

The application asks for a conditional use and master site plan for a contractor's yard on a legally platted lot in a rural zone. It also seeks a variance because the lot size and setbacks don't meet the zone's rules. It was filed Nov. 14 and is not yet complete.

SubmittedFiled Nov. 14, 2025202502246Ada County · 3650 S Eagle Rd

Comprehensive plan amendment · Planning application

County approves 10-year historic preservation plan for Ada County

The Ada County Board of County Commissioners approved a countywide plan with goals for identifying, protecting and reusing historic buildings and sites, added to the county comprehensive plan on Apr. 8. The plan is a policy document, not a building project.

ApprovedDecided April 8, 2026202502226Ada County · 200 W Front St

Variance · Planning application

Variance lets two-story home and ADU on 0.21-acre lot in Ada County

The county approved reduced setbacks and extra lot coverage for a two-story house with an attached garage and a future detached garage with an accessory dwelling unit, totaling 3,321 square feet. The decision was made Jan. 14 by the Board of County Commissioners, with conditions barring private access to adjoining…

ApprovedDecided Jan. 14, 2026202502196Dry Creek Valley · 10552 W Prairie Rd