Setback Requirements in Boise, ID (2026)
Front, side, and rear setback requirements by zoning district for Boise, ID. Source-cited from official municipal code.
Setbacks by Zoning District
| Zone | Front | Side | Rear | Notes |
|---|---|---|---|---|
| R-1A | 30 feet | 15 feet | 30 feet | Boise City Code Title 11. R-1A — estate residential, very large lots. |
| R-1B | 25 feet | 10 feet | 25 feet | Boise City Code Title 11. R-1B — low density single-family. |
| R-1C | 20 feet | 5 feet | 20 feet | Boise City Code Title 11. R-1C — standard single-family residential. |
| R-1D | 15 feet | 5 feet | 15 feet | Boise City Code Title 11. R-1D — moderate density single-family, allows duplexes in some areas. |
| R-2 | 15 feet | 5 feet | 15 feet | Boise City Code Title 11. R-2 — multi-family residential, low-medium density. |
| R-3 | 10 feet | 5 feet | 10 feet | Boise City Code Title 11. R-3 — multi-family residential, higher density. |
All setbacks measured from property line. Verify with Boise Planning and Development Services — Building Division before submitting permit applications.
Frequently Asked Questions
Can I build an ADU in Boise?
Yes. Boise allows ADUs (accessory dwelling units) through its local zoning code (City Code Title 11). You can build a detached or attached ADU on most residential lots. Idaho does not have statewide ADU preemption, but Boise has adopted permissive local ADU allowances. Detached ADUs are limited to 1,000 sqft. No owner-occupancy requirement applies. Permits are processed by Boise Planning and Development Services.
Does Boise require a permit for short-term rentals?
Yes. Boise requires a Short-Term Rental License ($125/year) for all Airbnb-style rentals. An annual fire safety inspection is also required. The license number must be displayed on all listing platforms. Airbnb and VRBO collect and remit applicable Idaho state sales tax and local lodging taxes on behalf of hosts.
What are the setbacks in an R-1C zone in Boise?
In an R-1C zone in Boise (standard single-family residential), the setbacks are: 20 ft front, 5 ft each side, and 20 ft rear. ADUs must maintain 5 ft side and 10 ft rear setbacks. Always verify specific parcel setbacks with Boise Planning and Development Services.
Are solar panels required on new homes in Boise?
No. Idaho does not have a solar mandate for residential construction. Solar is voluntary in Boise. Idaho Power serves the Boise area and offers net metering through their Solar PV Program. HOAs have limited ability to prohibit solar installations under Idaho Code Section 55-115.
What makes Boise zoning unique?
Boise is one of the fastest-growing cities in the US and has updated its zoning code to address rapid growth and housing demand. The city has hillside development constraints through the Hillside and Foothill Development Ordinance for properties in the foothills areas. Boise is also notable for its Greenbelt trail system along the Boise River, which creates open space requirements near the river.
Source: Boise Zoning Code — Setback Requirements. Last verified April 5, 2026. View source