Boise, ID Home Business: Signage Rules (2026)
Key Facts
- Sign limit
- One wall sign, max 2 sq ft
- Sign type
- Non-illuminated, flat against building
- If over limit
- Needs Zoning Compliance Review
- Floor space cap
- 500 sq ft for home occupation
- Code section
- Boise City Code § 11-03-03.2.O
Summary
Boise allows only one small, non-illuminated wall sign for a home-based business, capped at two square feet and mounted flat against the house.
One non-illuminated wall sign not exceeding two square feet in area and mounted flat against the building is allowed.
(3) Standards for Approval Requiring Issuance of Zoning Compliance Review: Home Occupations that do not comply with all the standards in Subsection (2) above require the filing of an application and issuance of a Zoning Compliance Review based on a review by the Planning Director to ensure they will not be a detriment to the livability of the neighborhood. The Planning Director may approve the proposed Home Occupation if the Planning Director determines that all of the standards in Subsection (2) above have been met, except as modified by the standards below.
(a) The owner and operator of the Home Occupation shall reside on the premises and may not employ more than one other individual to work in the home.
(b) One vehicle, in addition to that used by an employee, may be used with a Home Occupation subject to the following:
i. Commercial vehicles and trailers are prohibited.
ii. One off-street parking space is required and may be provided on a driveway apron.
(c) Outdoor storage of materials and supplies is prohibited.
(d) Instructional classes shall be limited to a maximum of five students per class, and limits on the hours within which instruction may occur may be added.
(e) Internal or external changes that would make the dwelling
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-31: Code current through: Ord. 20-26, passed 6-9-2026).
Full Breakdown
Boise's zoning code lets a home-based business post exactly one sign to identify itself: a wall-mounted sign, non-illuminated, capped at two square feet, flush against the building. Anything bigger, lit, freestanding, or posted in the yard falls outside the by-right standards and pushes the whole home occupation into a discretionary Zoning Compliance Review before the Planning Director, who can approve, condition, or deny it. The city also caps floor space devoted to a home occupation at 500 square feet and bars outdoor display of goods made or repaired on site, so this sign limit is one piece of a broader package of rules meant to keep home businesses looking residential.
Violations & Fines
Posting a sign larger than two square feet, an illuminated sign, or a freestanding/yard sign for a home occupation without Zoning Compliance Review approval is a zoning code violation subject to enforcement and potential permit denial or revocation.
Frequently Asked Questions
Can I put a lit sign in my yard advertising my home business?
Does every home business in Boise need city approval?
Sources & Official References
Other rules in Boise
Compare Boise to another location·View the Idaho home business overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.