Variance · Planning application
Treehouse 1.5 feet over height limit approved for 2.47-acre lot
Ada County commissioners approved a variance on Apr. 28 to keep an existing 517-square-foot treehouse at 25.5 feet, above the 24-foot limit for accessory structures. Staff had recommended denial.
From the filing
The application's description as it appears in Ada County's record. See the official record
The property owner is asking for a variance so an existing treehouse-style accessory structure at 3967 S. Coldstream Avenue near Boise can stay at 25.5 feet tall, 1.5 feet over the 24-foot limit. The structure is 517 square feet and sits on a 2.47-acre lot in the Southwest Community Residential District. Staff recommends denial because the request does not meet the county's variance standards.
Application for approval of an existing treehouse structure that exceeds the maximum height for an accessory structure by 1'6" (25.5') a 2.47 acre parcel in an RSW zone.
Timeline
April 28, 2026
Approved
Ada County Board of County Commissioners: Approved.
April 28, 2026
Public hearing: Ada County Board of County Commissioners
April 8, 2026
Ada County staff recommended denial
April 8, 2026
Public hearing: Ada County Board of County Commissioners
April 1, 2026
Document added: Staff report (Board of County Commissioners, Apr 8, 2026)
April 1, 2026
Document added: Findings (Board of County Commissioners, Apr 8, 2026)
Jan. 23, 2026
Application filed
Documents
Staff reports
- Download Staff report for Board of County Commissioners hearing
Staff recommends the Board consider a height variance for an existing 517 sq ft accessory structure at 25.5 feet, 1.5 feet over the 24-foot limit, and finds the three variance findings unmet.
April 1, 2026 · 55 pages · 23.2 MB · Staff Report
Decisions
- Download Findings of fact, conclusions of law and order
Board of County Commissioners decision on a variance to exceed the 24-foot height limit for an existing 517 square foot accessory structure, following the April 8, 2026 hearing.
April 1, 2026 · 6 pages · 276 KB · Findings