Sign Regulations in Boise, Idaho
Boise, Idaho has specific sign regulations covering 21 sign types across 16 zoning districts. Regulated sign types include Freestanding Sign, Wall Sign, Projecting Sign. Height restrictions apply. Permits are required for most commercial signs. Use PermitPal to get instant access to the complete regulations.
Data last verified: April 19, 2025
Sign Regulation Overview for Boise, Idaho
Sample Sign Requirements in Boise
| Sign Type | Max Height | Max Area | Setback |
|---|---|---|---|
| Directional Sign | 4 ft | 4 sq.ft. | — |
| Temporary Real Estate Sign (Single Residential Lot) | — | 6 sq.ft. | — |
| Temporary Real Estate Sign (Nonresidential Parcel) | — | 32 sq.ft. (Residential & Open Land); 64 sq.ft. (Mixed-Use & Industrial) | — |
* Sample data shown. Actual requirements may vary by zone. Use PermitPal for complete, location-specific regulations.
PermitPal Coverage for BoiseFull Coverage
Sign Types Covered
21
- Freestanding Sign
- Wall Sign
- Projecting Sign
- Electronic Message Display (EMD)
- +2 more types
Zoning Districts
16
Different zoning districts with specific sign regulations
Data Includes
- Permit requirements
- Height restrictions
- Illumination rules
Other Cities in Idaho
Frequently Asked Questions
Sign height limits in Boise vary by zone and sign type. Wall signs typically range from 25-40 feet, while monument signs are usually limited to 6-10 feet. Use PermitPal to get exact requirements for your property.
To get a sign permit in Boise, submit an application to the local building or planning department with sign dimensions, location, and design specifications. Our data confirms permits are required for most commercial signs. Processing typically takes 1-4 weeks. PermitPal helps you identify specific requirements and prepare complete applications.
In Boise, regulated sign types include Freestanding Sign, Wall Sign, Projecting Sign, Electronic Message Display (EMD), and 2 more types. Most commercial signs require permits. Temporary signs and certain small signs may be exempt. Use PermitPal for specific exemptions.
Sign setback requirements in Boise vary by zone and sign type, typically ranging from 5-15 feet from property lines. Use PermitPal for specific setback requirements at your location.
Digital and LED signs in Boise are regulated with specific requirements for brightness, animation, and message duration. Boise has documented illumination rules in our database. Use PermitPal to see the exact requirements for electronic message centers.
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Boise, Idaho Sign Rules at a Glance
Boise, Idaho regulates 21 sign types across 16 zoning districts. Freestanding Signs in the Residential zoning districts (R-1A, R-1B, R-1C, R-2, R-3), A-1, A-2 zoning district are capped at 6 ft (Gateway: 6 ft) tall and 50 sq.ft., with a 5 ft from front and side property lines setback (Sec. 11-04-012.7.A(3), Table 11-04.19). Most commercial signs in Boise require a permit.
Detailed Sign Ordinance Requirements for Boise, Idaho
Sign Rules by Zoning District in Boise (16 zones)
| Zoning District | Sign Types Regulated | Max Height | Max Area | Permit Required |
|---|---|---|---|---|
| General Regulations For All Zones | 8 | 8 ft | 96 sq.ft. | — |
| Residential zoning districts (R-1A, R-1B, R-1C, R-2, R-3), A-1, A-2 | 8 | 30 in (letters) | 200 sq.ft. per side | — |
| Open Land zoning districts | 3 | 15 ft (Gateway: 12 ft) | 70 sq.ft. | — |
| Mixed-Use zoning districts (MX-3, MX-4, MX-5, MX-U, I-1, I-2) | 4 | 30 ft | 75 sq.ft. | — |
| Mixed-Use zoning districts (MX-1) | 3 | 30 ft | 75 sq.ft. | — |
| Mixed-Use zoning districts (MX-2) | 2 | 20 ft (Gateway: 12 ft) | 80 sq.ft. | — |
| Mixed-Use zoning districts (MX-5) | 3 | 27 in. above sidewalk (if on sidewalk), or 4 ft (if attached to building) | 70 sq.ft. | — |
| Mixed-Use zoning districts (MX-U) | 2 | 15 ft (Gateway: 12 ft) | 70 sq.ft. | — |
| Industrial zoning districts (I-1, I-2) | 2 | 15 ft (Gateway: 12 ft) | 70 sq.ft. | — |
| Capital Boulevard Special Design District | 4 | 20 ft or building height, whichever is less | 25 sq.ft. | — |
| MX-3 | 4 | 30 ft | 75 sq.ft. | — |
| MX-4 | 4 | 30 ft | 75 sq.ft. | — |
| MX-5 | 3 | 27 in. above sidewalk (if on sidewalk), 4 ft if attached to building | 70 sq.ft. | — |
| MX-U | 2 | 15 ft (Gateway: 12 ft) | 70 sq.ft. | — |
| I-1 | 2 | 15 ft (Gateway: 12 ft) | 70 sq.ft. | — |
| I-2 | 2 | 15 ft (Gateway: 12 ft) | 70 sq.ft. | — |
Zone-by-Zone Sign Requirements in Boise(sample of 3 of 16 zones)
General Regulations For All Zones
| Sign Type | Max Height | Max Area | Max Width | Setback | Signs Allowed | Location | Permit Required | Premium Details(Illumination, Size Formula, Permit Requirements, Additional Requirements — available with a free PermitPal account) | Ordinance Citation |
|---|---|---|---|---|---|---|---|---|---|
| Directional Sign | 4 ft | 4 sq.ft. | — | — | 2 | At street entrance to parcel; non-accessory directional or wayfinding signs may be erected by governments, subject to approval. | — | Unlock | 11-04-012.7.A(4) |
| Temporary Real Estate Sign (Single Residential Lot) | — | 6 sq.ft. | — | — | 1 | — | — | Unlock | 11-04-012.4.B(1) |
| Temporary Real Estate Sign (Nonresidential Parcel) | — | 32 sq.ft. (Residential & Open Land); 64 sq.ft. (Mixed-Use & Industrial) | — | — | 1 per frontage | — | — | Unlock | 11-04-012.4.B(1) |
| Temporary Construction Sign (Single Residential Lot) | — | 6 sq.ft. | — | — | 1 | — | — | Unlock | 11-04-012.4.B(2) |
| Temporary Construction Sign (Residential & Open Land) | 8 ft | 64 sq.ft. | — | — | 1 | — | — | Unlock | 11-04-012.4.B(2) |
| Temporary Construction Sign (Mixed-Use & Industrial) | 8 ft | 96 sq.ft. | — | — | 1 per frontage | — | — | Unlock | 11-04-012.4.B(2) |
| Special Community Event Sign | — | Size as approved by Planning Director | — | — | — | Any location subject to safety and visibility review | — | Unlock | 11-04-012.4.B(4) |
| Temporary Promotional Sandwich Board/Banner/Pennant/Flag/Balloon | Sandwich Board: 4 ft | Sandwich Board: 3 ft width max | 3 ft (Sandwich Board) | — | — | The Grove, as part of community event | — | Unlock | 11-04-012.4.B(5) |
Residential zoning districts (R-1A, R-1B, R-1C, R-2, R-3), A-1, A-2
| Sign Type | Max Height | Max Area | Max Width | Setback | Signs Allowed | Location | Permit Required | Premium Details(Illumination, Size Formula, Permit Requirements, Additional Requirements — available with a free PermitPal account) | Ordinance Citation |
|---|---|---|---|---|---|---|---|---|---|
| Freestanding Sign | 6 ft (Gateway: 6 ft) | 50 sq.ft. | — | 5 ft from front and side property lines | 1 per street frontage | Front of parcel, near main vehicle entrance, perpendicular to street, not facing interstates; in a landscaped area at least equal to background area. | — | Unlock | 11-04-012.7.A(3), Table 11-04.19 |
| Wall Sign (R-3 and nonresidential in R zones, A-1, A-2) | — | 50 sq.ft. | — | — | No stated max; total area limitation | On wall facing street | — | Unlock | 11-04-012.7.A(8), Table 11-04.20 |
| Awning Sign (R-3 only, A-1, A-2) | — | — | — | — | — | Affixed to awning | — | Unlock | 11-04-012.7.A(1) |
| Canopy/Marquee Sign - Under (R-3 only, A-1, A-2) | — | 16 sq.ft. | — | — | 1 per public entrance | Under canopy/marquee, minimum 8 ft above walk, mounted perpendicular | — | Unlock | 11-04-012.7.A(2) |
| Canopy/Marquee Sign - Above (R-3 only, A-1, A-2) | 30 in (letters) | — | 33% of canopy background width | — | — | Above marquee/canopy | — | Unlock | 11-04-012.7.A(2) |
| Marquee Sign (R-3 only, A-1, A-2) | 6 ft | 200 sq.ft. per side | — | — | 1 per side | On marquee, min clearance 12 ft above sidewalk/pedestrian way | — | Unlock | 11-04-012.7.A(2) |
| Projecting Sign (R-3 only, A-1, A-2) | 30 ft | 75 sq.ft. | — | — | 1 per street frontage (2 if >150ft frontage) | One per frontage; no more than 2 ft above bldg. No part over 10 ft from wall or closer than 2 ft to curb; 12 ft min clearance over public property. | — | Unlock | 11-04-012.7.A(7) |
| Electronic Message Display (EMD) | — | 50% of sign area (EMD portion); text-only scroll/travel: 8 sq.ft. | — | — | 1 (per center if multi-tenant) | — | — | Unlock | 11-04-012.7.A(5) |
Mixed-Use zoning districts (MX-3, MX-4, MX-5, MX-U, I-1, I-2)
| Sign Type | Max Height | Max Area | Max Width | Setback | Signs Allowed | Location | Permit Required | Premium Details(Illumination, Size Formula, Permit Requirements, Additional Requirements — available with a free PermitPal account) | Ordinance Citation |
|---|---|---|---|---|---|---|---|---|---|
| Freestanding Sign | 15 ft (Gateway: 12 ft) | 70 sq.ft. | — | 1 ft front, 5 ft side; 50 ft from Residential boundary | 1 per street frontage | Front of parcel, landscaped area, perpendicular to street; not facing interstate highways. | — | Unlock | 11-04-012.7.A(3), Table 11-04.19 |
| Wall Sign | — | 20% of building wall facing street | — | — | No stated max; area split among multiple. | Face building wall facing street; some exceptions allow on non-street wall using allowed area from street wall. | — | Unlock | 11-04-012.7.A(8), Table 11-04.20 |
| Projecting Sign | 30 ft | 75 sq.ft. | — | — | 1 per frontage (or 2 if >150 ft) | One per street-level establishment per frontage; max projection 10 ft from wall, or to within 2 ft of curb; min 12 ft over public property. | — | Unlock | 11-04-012.7.A(7) |
| EMD (Electronic Message Display) | — | 50% of sign area (EMD); text-only scroll/travel: 8 sq.ft. | — | — | 1 per establishment or per center | — | — | Unlock | 11-04-012.7.A(5) |
PermitPal covers all 16 zoning districts in Boise — full sign requirements for every zone, plus illumination rules, size formulas, and permit requirements for every sign type — with a free account.
See all 16 zones for Boise — start freeProhibited Signs in Boise
- Signs or posters visible from a public way affixed to walls, buildings, trees, poles, fences, bridges, or other structures.
- Signs placed on any public street right-of-way, sidewalk, pole, bridge, or tree (unless specifically allowed); such signs may be deemed nuisances and removed by the City without prior notice.
- Banners, pennants, strings of lights, ribbons, streamers, balloons, mechanically aided, or similar devices that call attention rather than contribute to the establishment decor.
- Portable signs except those allowed as temporary signs and those allowed in the MX-5 district.
- Signs whose lighting, location or appearance would cause them to appear as traffic safety signs, lights, or municipal vehicle warnings.
- Any sign attached to or placed on a vehicle or trailer that is parked or driven unless: (a) The primary purpose of the vehicle or trailer is not the display of signs; (b) The signs are magnetic, decals or painted as an integral part of the vehicle or equipment; and (c) The vehicle or trailer is in operating condition, currently registered and licensed, and actively used in the daily function of the related establishment.
- Roof signs.
- Animated signs.
- Strobe lights and flashing lights.
- Signs used to display any message on any seating bench or in direct connection with a bench unless authorized by the regional public transportation system authority and permitted by the Planning Director.
- Abandoned signs, including those relating to establishments that no longer occupy or operate on the property.
- Signs located within the clear vision triangle (as defined in code and ACHD).
- Signs erected at intersections or driveway entrances that obstruct view of traffic (as determined by authorities).
- Trees shall not be topped or removed to facilitate a better view of signs.
- Signs shall not be erected, constructed, or maintained so as to obstruct any fire escape, window, door, or egress opening, nor be attached to a fire escape, nor interfere with required ventilation openings.
- No sign may be illuminated by means other than electrical and must comply with applicable electrical codes; open spark or flame is prohibited unless specifically approved by building/fire code official.
- No back-bracing on billboard/off-premise signs.
- Signs in Mixed-Use, Industrial, or Open Land zoning districts shall not be located within 50 feet of a Residential zoning district boundary.
- Pole support structures shall be covered with an enclosure.
- Signs shall not be pasted, glued, tacked, attached, posted, or displayed in a city park unless otherwise provided or authorized by the department.
Exempt Signs in Boise
- Official notices authorized by a court, public body, or public safety official.
- Directional, warning or information signs authorized by a government.
- Memorial plaques, establishment identification signs, and building cornerstones when cut or carved into masonry or made an integral part of the building.
- Flags of government or noncommercial institutions, such as schools.
- Religious symbols and seasonal decorations.
- Works of art containing no form of advertising.
- Street address signs and combination nameplate/street address signs (without advertising copy and not exceeding six square feet).
- Signs oriented only to the property on which they are located and not visible from the public right-of-way (e.g., restaurant menu boards).
- Signs in the display windows of an establishment incorporated in a display of merchandise.
- "No Trespassing," "No Dumping," or similar signs not exceeding 1.5 square feet and not exceeding four per parcel.
- Window signs with an aggregate area of 25% or less of the window area.
- Political signs not placed in any public right-of-way and not obstructing traffic visibility.
- Neighborhood identification and wayfinding signage approved as a community program.
- Non-illuminated real estate signs (one per residential parcel, one per frontage for nonresidential; size and location as specified).
- Non-illuminated, temporary construction signs (as specified).
- Signs/posters advertising a special community event (including in/on public ROW) with Planning Director approval for safety and impacts.
- Pennants, flags, banners, balloons, and sandwich boards during/for community events in specified areas with restrictions on duration and size.
- Change of copy, repainting, or other normal maintenance/repair of an existing sign (provided no expansion of sign structure/face occurs).
- Signs painted on buildings, fences, or walls (no building permit required).
- Permanent signs supported by the building that are <=32 square feet and project <=3 feet from building face (no building permit required).
- Permanent pole or ground signs that are less than seven feet tall (no building permit required).
- Temporary signs (no building permit required, but must comply with other code provisions).
- Any sign less than four square feet (no building permit required).
- Signs erected by transportation authorities (no building permit required).
Sign Plan & Submission Notes for Boise
- Multi-tenant nonresidential developments planned and developed as an integrated center or a single, multi-tenant building must obtain approval of an Alternative Sign Plan before constructing or installing any sign on the property. This includes hospital complexes (≥2 acres), office centers with multiple buildings (≥2 acres), industrial parks with multiple buildings (≥5 acres), and single, multi-tenant buildings (≥2 acres).
- The Alternative Sign Plan establishes standards and criteria for all signs requiring permits and must address location, materials, design, and quantity.
- Design Review approval of an overall sign plan is required for all signs in the Capitol Boulevard Special Design District.
- Any sign requiring Conditional Use Permit, Design Review, or Special Exception must follow review procedures as outlined elsewhere in code.
- Freestanding sign landscaping must be reviewed as part of the sign application.
- Where engineering is required, submittal documents must include plans/calculations stamped by an Idaho licensed engineer.
- Construction documents are required for projects requiring a permit, as per the Boise City submittal checklist.
- Sign permits are required for all sign installations/erections except those specifically exempted.
- Variances and Conditional Use Permits for signs require a public meeting/review process as described in the code.