# Sign Regulations in Twin Falls, Idaho

Sign permit rules, size and height limits, setbacks, and ordinance citations for Twin Falls, Idaho, compiled by PermitPal from the jurisdiction's published municipal code.

- **Jurisdiction:** Twin Falls, Idaho (ID)
- **Canonical page:** https://permitpal.io/sign-regulations/idaho/twin-falls
- **Data last verified:** 2025-04-20
- **Source:** [amlegal municipal code](https://www.tfid.org/DocumentCenter/View/7431/Title-10-Final-Draft---Oct-2025)

## At a glance

Twin Falls, Idaho regulates 27 sign types across 17 zoning districts. Permanent Freestanding Sign (Commercial)s in the OS zoning district are capped at 8 ft tall and 45 sq ft per sign; 60 sq ft total per property, with a Minimum 10 ft front setback from property line. Must also be a minimum of 7 ft from back of sidewalk or 2 ft from back of sidewalk (whichever is greater) for public way directional variants; may not project into right-of-way. setback (Sec. 10-10-7(C) Table (Natural Zones: AG, OS); 10-10-2(A)(1); 10-10-2(C); 10-10-2(C)(3); 10-10-10(C)(1)-(3)). Most commercial signs in Twin Falls require a permit.

## Sign rules by zoning district (17 zones)

| Zoning District | Sign Types Regulated | Max Height | Max Area | Permit Required |
| --- | --- | --- | --- | --- |
| OS | 10 | May project above roofline/cornice/parapet up to 10% of the height of the building facade where installed | Counts toward the property’s 60 sq ft total allowance; individual sign area subject to the same 45 sq ft per-sign maximum for freestanding signs in OS | — |
| AG | 10 | May project above roofline/cornice/parapet up to 10% of the height of the building facade where installed | Counts toward 60 sq ft total; up to 45 sq ft per freestanding sign | — |
| RR | 7 | May project above roofline/cornice/parapet up to 10% of the building facade height where installed | Up to 50 sq ft (or 80 sq ft with ≥ 400 ft frontage) within the host sign’s area | — |
| TN-1 | 7 | May project above roofline/cornice/parapet up to 10% of facade height where installed | Up to 50 sq ft (or 80 sq ft with ≥ 400 ft frontage) within the host sign’s area | — |
| TN-2 | 7 | May project above roofline/cornice/parapet up to 10% of facade height where installed | Up to 50 sq ft (or 80 sq ft with ≥ 400 ft frontage) within the host sign’s area | — |
| TN-3 | 7 | May project above roofline/cornice/parapet up to 10% of facade height where installed | Up to 50 sq ft (or 80 sq ft with ≥ 400 ft frontage) within the host sign’s area | — |
| CMT | 10 | May project above roofline/cornice/parapet up to 10% of facade height where installed | Up to 60 sq ft per freestanding sign; 60 sq ft total per property | — |
| MU | 10 | May project above roofline/cornice/parapet up to 10% of facade height where installed | Up to 60 sq ft per freestanding sign; 60 sq ft total per property | — |
| CC | 10 | 35 ft | Per property total: up to 350 sq ft (1 sq ft per linear ft of street frontage up to 350). A single freestanding sign’s area may be up to the property’s remaining total allowance; no separate per-sign cap beyond the total. | — |
| COM | 10 | 35 ft | Per property total: up to 350 sq ft (1 sq ft per linear ft of street frontage up to 350). A single freestanding sign’s area may be up to the property’s remaining total allowance; no separate per-sign cap beyond the total. | — |
| IND 1 | 10 | 35 ft | Per property total: up to 500 sq ft (1 sq ft per linear ft of street frontage up to 500). A single freestanding sign’s area may be up to the property’s remaining total allowance; no separate per-sign cap beyond the total. | — |
| IND 2 | 10 | 35 ft | Per property total: up to 500 sq ft (1 sq ft per linear ft of street frontage up to 500). A single freestanding sign’s area may be up to the property’s remaining total allowance; no separate per-sign cap beyond the total. | — |
| AP | 10 | 35 ft | Per property total: up to 500 sq ft (1 sq ft per linear ft of street frontage up to 500). A single freestanding sign’s area may be up to the property’s remaining total allowance; no separate per-sign cap beyond the total. | — |
| CSI | 7 | May project above roofline/cornice/parapet up to 10% of facade height where installed (general attached sign rule) | Up to 50 sq ft (or 80 sq ft with ≥ 400 ft frontage) within the host sign’s area | — |
| CRO | 6 | Public way-oriented: 3 ft; Internal: not specified | Up to 50 sq ft (or 80 sq ft if frontage threshold met) within the host sign’s area | — |
| PRO | 10 | May project above roofline/cornice/parapet up to 10% of facade height where installed | Up to 60 sq ft per freestanding sign; 60 sq ft total per property | — |
| General Regulations For All Zones | 8 | Subject to host sign | 50 sq ft (or 80 sq ft with frontage ≥ 400 ft), included within host sign’s area | — |

## Zone-by-zone sign requirements (sample of 3 of 17 zones)

### OS

| Sign Type | Max Height | Max Area | Max Width | Setback | Signs Allowed | Location | Permit Required | Ordinance Citation |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Permanent Freestanding Sign (Commercial) | 8 ft | 45 sq ft per sign; 60 sq ft total per property | — | Minimum 10 ft front setback from property line. Must also be a minimum of 7 ft from back of sidewalk or 2 ft from back of sidewalk (whichever is greater) for public way directional variants; may not project into right-of-way. | At least one freestanding sign per property is allowed; additional signs subject to total area and spacing of 100 ft between freestanding signs on the same property. | On private property; minimum 10 ft front setback. | — | 10-10-7(C) Table (Natural Zones: AG, OS); 10-10-2(A)(1); 10-10-2(C); 10-10-2(C)(3); 10-10-10(C)(1)-(3) |
| Permanent Attached Sign (Commercial) | May project above roofline/cornice/parapet up to 10% of the height of the building facade where installed | Up to 45 sq ft per attached sign; 60 sq ft total per property | — | N/A for attached signs; may not project into right-of-way; must maintain minimum 2 ft horizontal clearance from curb line if projecting element exists. | Number limited by total allowed area (60 sq ft). | Attached to building facades, windows, doors, or marquees on private property; no projection into public right-of-way. | — | 10-10-7(C) Table (Natural Zones: AG, OS) and Footnote 1; 10-10-2(C) |
| Permanent Freestanding Sign (Non-Commercial) | 8 ft | 45 sq ft per sign; 60 sq ft total per property | — | Minimum 10 ft front setback. | At least one per property; additional subject to spacing and total area. | On private property; minimum 10 ft front setback. | — | 10-10-7(C) Table (Natural Zones: AG, OS); 10-3-5(D)(4)(i)(B) |
| Permanent Attached Sign (Non-Commercial) | May project above roofline/cornice/parapet up to 10% of the facade height where installed | Up to 45 sq ft per sign; 60 sq ft total per property | — | N/A | Limited by total area. | Attached to building facades on private property. | — | 10-10-7(C) Table (Natural Zones: AG, OS) and Footnote 1; 10-10-2(C) |
| Temporary Sign — Freestanding | 10 ft | 32 sq ft per sign; 48 sq ft total per property | — | No specific front setback; must stay out of right-of-way and sight triangles. | Limited by total area; multiple signs allowed so long as total does not exceed 48 sq ft (or 80 sq ft on platted undeveloped lots). | On private property; may not be within or over the public right-of-way; may be on closed right-of-way only when part of an approved Special Event; may be on a designated festival street sidewalk subject to specific requirements. | — | 10-10-8(B)-(5); Temporary Sign Dimension Allowance Table (Natural Zones: AG, OS) |
| Temporary Sign — Attached | May not protrude above rooftop, cornice, parapet, or highest point of building wall/facade upon which installed | 32 sq ft per attached temporary sign | — | N/A | Limited by practical placement and general nuisance/safety rules. | Attached to building walls, windows, or doors; not into/over the public right-of-way. | — | 10-10-8; Temporary Sign Dimension Allowance Table (Natural Zones: AG, OS) Footnote 1 |
| Digital Sign (Component of an Allowed Sign) | Subject to the host sign’s height limits | Up to 50 sq ft of digital display (or up to 80 sq ft if frontage ≥ 400 ft) included within the area of one allowed sign | — | Same as host sign; no projection into right-of-way. | Digital is a display component, not a separate sign count. | Only as part of an allowed attached or freestanding sign; may not project into the right-of-way. | — | 10-10-9(B)(1)-(3), (a)-(f) |
| Directional Sign — Public Way-Oriented (Freestanding) | 3 ft (measured from nearest top of curb in the right-of-way) | 3 sq ft per sign | — | Minimum 7 ft from face of curb or 2 ft from back of sidewalk, whichever is greater; not in right-of-way. | As needed; each counts toward total area but not toward freestanding sign count. | On private property but oriented to direct traffic from the public right-of-way; must not be in the right-of-way. | — | 10-10-10(D)(3)(a)-(e); 10-10-10(C)(2)(b) |

### AG

| Sign Type | Max Height | Max Area | Max Width | Setback | Signs Allowed | Location | Permit Required | Ordinance Citation |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Permanent Freestanding Sign (Commercial) | 8 ft | 45 sq ft per sign; 60 sq ft total per property | — | Minimum 10 ft front setback; no encroachment into right-of-way. | At least one; additional based on spacing and total area. | On private property; minimum 10 ft front setback. | — | 10-10-7(C) Table (Natural Zones: AG, OS); 10-10-2; 10-10-10(C)(1)-(3) |
| Permanent Attached Sign (Commercial) | May project above roofline/cornice/parapet up to 10% of the height of the building facade where installed | Up to 45 sq ft per sign; 60 sq ft total per property | — | N/A | Limited by total area. | Attached to buildings on private property; no projection into right-of-way. | — | 10-10-7(C) Table (Natural Zones: AG, OS) and Footnote 1; 10-10-2(C) |
| Permanent Freestanding Sign (Non-Commercial) | 8 ft | 45 sq ft per sign; 60 sq ft total per property | — | Minimum 10 ft front setback. | At least one; additional based on spacing and total area. | On private property; minimum 10 ft front setback. | — | 10-10-7(C) Table (Natural Zones: AG, OS) |
| Permanent Attached Sign (Non-Commercial) | May project above roofline/cornice/parapet up to 10% of the height of the building facade where installed | Up to 45 sq ft per sign; 60 sq ft total per property | — | N/A | Limited by total area. | Attached to buildings. | — | 10-10-7(C) Table (Natural Zones: AG, OS) and Footnote 1 |
| Temporary Sign — Freestanding | 10 ft | 32 sq ft per sign; 48 sq ft total per property | — | No specific setback; must remain off right-of-way and outside sight triangles. | Multiple allowed within total area cap. | On private property; not within right-of-way except during approved Special Events or on designated festival streets per rules. | — | 10-10-8; Temporary Sign Dimension Allowance Table (Natural Zones: AG, OS) |
| Temporary Sign — Attached | May not protrude above rooftop/cornice/parapet/highest point of the wall/facade | 32 sq ft per attached temporary sign | — | N/A | As needed within safety/maintenance constraints. | Attached to building; not over/into right-of-way. | — | 10-10-8; Temporary Sign Dimension Allowance Table (Natural Zones: AG, OS) Footnote 1 |
| Digital Sign (Component of an Allowed Sign) | Subject to host sign | Up to 50 sq ft (or 80 sq ft with frontage ≥ 400 ft) included within the host sign’s area | — | Same as host sign. | Digital is a display component. | Only with allowed attached or freestanding signs; only with a nonresidential use; may not project into right-of-way. | — | 10-10-9 |
| Directional Sign — Public Way-Oriented (Freestanding) | 3 ft | 3 sq ft | — | 7 ft from curb or 2 ft from back of sidewalk, whichever greater. | As needed. | On private property but visible from public right-of-way; must not be in right-of-way. | — | 10-10-10(D)(3); 10-10-10(C)(2)(b) |

### CMT

| Sign Type | Max Height | Max Area | Max Width | Setback | Signs Allowed | Location | Permit Required | Ordinance Citation |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Permanent Freestanding Sign (Commercial) | 8 ft | Up to 60 sq ft per freestanding sign; 60 sq ft total per property | — | Minimum 10 ft front setback; may not project into right-of-way. | At least one; additional subject to spacing and total area. | On private property; minimum 10 ft front setback. | — | 10-10-7(C) Table (Mixed Use Districts: MU, CMT, PRO); 10-10-2(C); 10-10-10(C)(1)-(2) |
| Permanent Attached Sign (Commercial) | May project above roofline/cornice/parapet up to 10% of facade height where installed | Up to 60 sq ft per attached sign; 60 sq ft total per property | — | N/A | Limited by total area. | Attached to buildings; not into right-of-way. | — | 10-10-7(C) Table (Mixed Use Districts: MU, CMT, PRO) and Footnote 1; 10-10-2(C)(2) |
| Permanent Freestanding Sign (Non-Commercial) | 8 ft | Up to 60 sq ft per sign; 60 sq ft total per property | — | Minimum 10 ft front setback. | At least one; additional subject to spacing and total area. | On private property; minimum 10 ft front setback. | — | 10-10-7(C) Table (Mixed Use Districts: MU, CMT, PRO) |
| Permanent Attached Sign (Non-Commercial) | May project above roofline/cornice/parapet up to 10% of facade height where installed | Up to 60 sq ft per attached sign; 60 sq ft total per property | — | N/A | Limited by total area. | Attached to buildings. | — | 10-10-7(C) Table (Mixed Use Districts: MU, CMT, PRO) and Footnote 1 |
| Temporary Sign — Freestanding | 10 ft | 32 sq ft per sign; 32 sq ft total per property | — | Remain off right-of-way and out of sight triangles. | Multiple allowed within 32 sq ft total (or 80 sq ft for platted undeveloped lots). | On private property; not in right-of-way except under approved Special Event or designated festival street provisions. | — | 10-10-8; Temporary Sign Dimension Allowance Table (Mixed Use Districts: MU, CMT) |
| Temporary Sign — Attached | May not protrude above rooftop/cornice/parapet/highest point of wall/facade | 32 sq ft per attached temporary sign | — | N/A | As needed within safety/maintenance constraints. | Attached to building; not over/into right-of-way. | — | 10-10-8; Temporary Sign Dimension Allowance Table (Mixed Use Districts: MU, CMT) Footnote 1 |
| Directional Sign — Public Way-Oriented (Freestanding) | 3 ft | 3 sq ft | — | 7 ft from curb or 2 ft from back of sidewalk, whichever greater. | As needed. | On private property; oriented to direct traffic from public right-of-way; not in right-of-way. | — | 10-10-10(D)(3); 10-10-10(C)(2)(b) |
| Digital Sign (Component of an Allowed Sign) | Subject to host sign | Up to 50 sq ft (or 80 sq ft with ≥ 400 ft frontage) within the host sign’s area | — | Same as host sign. | Digital is a display component. | Only as part of an allowed attached or freestanding sign and only with a nonresidential use; may not project into right-of-way. | — | 10-10-9 |

## Prohibited signs in Twin Falls

- Off-premises signs are prohibited unless specifically permitted by this chapter.
- Obscene signs are prohibited, including signs with offensive language, hate-based or discriminatory content, prurient sexual content that is patently offensive and without social value.
- Merchandise displays used as advertising objects (hung or placed on buildings, poles, sidewalks, driveways, parking areas, or pump islands) are prohibited, except as otherwise allowed for outdoor display/storage in the code.
- Mobile signs on vehicles or trailers used solely for advertising are prohibited; vehicles must have a legitimate business purpose other than acting as a sign.
- Any sign constructed without a permit is prohibited unless it qualifies for a permit exemption.
- Any sign erected in or over the public right-of-way or other public property is prohibited unless otherwise allowed in this chapter or approved by the public agency with jurisdiction.
- Any lighted sign within 150 feet of residentially zoned property is prohibited unless the lighting is shielded from view of the residential property and indirect light does not exceed 0.5 lumen at the residential property line or is otherwise allowed by this chapter.
- Signs that move and/or are animated by flashing, traveling, or blinking lights, or other non-constant illumination are prohibited unless specifically allowed by this chapter.
- Appendages to primary signs that have flashing, blinking, or traveling lights are prohibited.
- Any sign that emits audible sound, odor, smoke, or other visible matter/substance is prohibited.
- Any sign whose content does not pertain to a person, activity, idea, business, or product on the premises is prohibited unless specifically allowed by this chapter.
- Any sign advertising illegal activity, or advertising an establishment that sells a controlled substance or drug paraphernalia as defined in Idaho Code § 37-2701, is prohibited.
- Any sign not referenced within or governed by this chapter is prohibited unless allowed through the Administrative Determination process.
- No sign shall project beyond the property line unless otherwise allowed; no sign foundations may encroach into the public right-of-way; and no sign shall project closer than 2 feet to a vertical line projected from the face of the curb (or future curb).
- No sign may be posted, attached, or maintained on City-owned property without written permission of the City Manager or designee.
- No sign may be located within a utility easement unless approvals are obtained from easement beneficiaries and a City liability release is provided.
- No sign may be attached to any tree, light pole, utility pole, or utility structure.
- No sign may be attached to any fence, railing, or wall unless otherwise specified in the code.
- No sign may be placed on any sidewalk within the right-of-way or a sidewalk easement, curb, gutter, or street, except for house numbers or fire lane designation.
- No sign may be placed within 2 feet of any utility line or any streetlight.
- No sign may block, partially block, or interfere with required entrances/exits from any building or with any window.
- No sign may block, interfere, or hinder pedestrian or vehicular traffic on a public sidewalk, public thoroughfare, fire lane easement, or a driveway required to access parking.

## Signs exempt from permit in Twin Falls

- Address numbering for properties or buildings that meet Fire and Building Codes.
- Signs required by local, state, or federal law or regulation when less than 3 square feet.
- Holiday lights and decorations.
- Signs authorized by statute or ordinance when erected on public property by governmental agencies with jurisdiction.
- Legal notices or official instruments required by law.
- Signs carried by a person not exceeding six square feet.
- Any form that displays the standards or colors (flags) for a country, state, county, city, other political subdivision, military, or religious entity.
- Temporary signs as permitted by this chapter.
- Signs inside buildings that are not visible from the public right-of-way.
- Traffic control signs conforming to the Manual on Uniform Traffic Control Devices installed or approved by the City or other governmental entities with jurisdiction.
- Changing or replacing a sign face/copy (including panels, graphics, or lettering) in an existing sign cabinet or frame is exempt provided: no change to the cabinet/frame/supports or other structural elements; no change to sign area, dimensions, height, or location; and no change to the type of sign or method of illumination (separate electrical permits may be required if electrical work is performed).

## Sign permit fees & timelines in Twin Falls

| Item | Details | Citation |
| --- | --- | --- |
| All sign permits | Tiered fee — full schedule with a free account | — |

_The full published fee and review-timeline schedule for Twin Falls is available in PermitPal (free account)._

## Full detail

This page publishes an overview of every zoning district plus a sample of 3 districts in full. Complete zone-by-zone requirements for all 17 zoning districts in Twin Falls — every sign type, every field — are available with a free PermitPal account: https://app.permitpal.io/?address=Twin+Falls+ID&override=true&utm_source=landing&utm_medium=city-page&utm_campaign=city-twin-falls

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