Local zoning · Rialto

Rialto — Signage

Q: What sign types am I allowed on a standard commercial lot in Rialto?

Most commercial lots in C-1/C-2/C-3 can use wall , window , awning , projecting , and one freestanding/monument sign subject to area, height and setback limits in the sign chapter; freestanding limits for commercial lots are typically 40 sq ft and 20 ft height with a 5 ft ROW setback (§ 18.102.060(H)) .

Q: Are digital or flashing signs allowed downtown?

The Downtown Revitalization Overlay expressly prohibits flashing signs and other sign types not compatible with the downtown character; electronic/dynamic displays will face close scrutiny under the overlay’s design‑review rules (§ 18.49.060(I) and § 18.49.040) .

Q: Do I need design review for a new sign in downtown Rialto?

Yes. The overlay makes sign design and location a reviewable item; the community development director or planning commission reviews signs as part of precise plan/design review per § 18.49.040 and § 18.49.060. See Rialto Design Review . .

Q: How big can a freestanding sign be on an industrial lot (M-1/M-2)?

In M-1 and M-2 zones, freestanding signs may be larger than in commercial zones — up to 80 sq ft and 25 ft height under the industrial subsection (§ 18.102.060(I)(2)) .

Q: Are there special rules for signs facing the I‑10 (freeway)?

Yes. The Rialto Gateway Specific Plan allows special multi‑tenant freeway‑oriented signs to be taller and larger (upper sign up to 100 ft , overall 120 ft , combined area up to 1,000 sq ft , single business sign up to 500 sq ft ) but such structures require planning‑commission review (§ 18.102.060(K)) .

Signage under the Rialto local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

Signage in Rialto is governed by the city's zoning ordinance and focused sign chapter (the municipal sign provisions are located in the Title 18 code), which ties sign types and size/placement rules to specific zoning districts. For a project you must check the property's zoning map and the applicable development standards — start with Rialto Zoning and the city's Rialto Development Standards. Sign rules intersect with rules about parking, design review and overlay districts, so plan submittals usually need to address those topics as well (see Rialto Parking, Rialto Design Review, and Rialto Overlay Districts). Structural and electrical design of larger or illuminated signs must comply with the state code (see California Building Standards Code).

How Rialto's sign rules are organized (short)

The local sign rules appear as a dedicated sign chapter (the code uses subsection letters for different sign types and zones), with special provisions in other chapters and overlays (for example, the Downtown Revitalization Overlay, Foothill Boulevard restrictions, and the Rialto Gateway Specific Plan). Key cross-references appear at § 18.102.060 (permitted sign types and quantitative limits), § 18.102.070 (nonconforming signs), and § 18.102.080 (relocation/relocation agreements for off-site advertising).

District-by-district breakdown

Note: where I cite a subsection letter it comes from the city's sign chapter organization (the municipal sign chapter uses lettered subsections A–K). Verify parcel-level details with the city planner.

C-1 and C-1A—neighborhood commercial (typical intent)

Purpose: small-scale retail and services serving nearby residential areas.
Typical permitted sign types: wall signs, window signs, awning signs, projecting signs, and limited monument or freestanding signs per the sign chapter. See the general sign type rules in § 18.102.060 (subsections covering awnings, window, monument, etc.).
Key dimensional limits: window signs limited to 25% of a single window area (§ 18.102.060(E)) and awning signs limited to 20% of the aggregate allowed sign area with letter height capped at 6 in (§ 18.102.060(F)).
Where it applies: uses zoned C-1 / C-1A shown on the zoning map. See Rialto Zoning.

C-2, C-3 and C-M—general and freeway-oriented commercial

Purpose: larger commercial uses, auto-oriented services and regional retail.
Typical permitted sign types: all types allowed in C-1 plus freestanding (pole or monument) signs; off-site advertising (billboards) are explicitly permitted in some commercial zones per the sign chapter (with restrictions). See § 18.102.060(H) and § 18.102.060(J).
Key dimensional standards (commercial freestanding): a single lot may have one freestanding sign up to 40 sq ft and 20 ft height; freestanding signs must be set back 5 ft from the right-of-way and not closer than 40 ft to another freestanding sign (§ 18.102.060(H)).
Off-site (billboard) standards in commercial zones: 300 sq ft per display face, maximum 25 ft overall height, minimum 5 ft setback; separation and distance-from-residential/parks/freeways rules apply (§ 18.102.060(J)).

M-1, M-2 and PID—industrial zones

Purpose: manufacturing, warehousing, and industrial parks.
Permitted signs: illuminated wall signs (subject to not projecting above eave/parapet), window signs, limited freestanding signs for M-1 and M-2; PID generally prohibits freestanding signs but allows monument signs per the monument standards (§ 18.102.060(I)).
Key dimensional standards: M-1/M-2 freestanding may be increased to 80 sq ft and 25 ft height (§ 18.102.060(I)(2)). Window sign area allowances can be higher in manufacturing zones (see the industrial subsection).

I-P (Industrial Park)

Purpose: planned industrial park developments with precise design controls.
Signs are allowed in accordance with the precise plan/design review; see the I-P chapter for specific allowances and the city's design review process (§ 18.35.010–.020 and design-review chapters).

Downtown Revitalization Overlay (Rialto Central Area Specific Plan)

Purpose: tighter design and pedestrian focus downtown.
Rules: the overlay imposes sign design and placement review and prohibits a list of sign types not compatible with the downtown character. Sign design and sign location are explicitly reviewable items under the overlay's design-review rules (§ 18.49.040 and § 18.49.060). Prohibited signs include flashing signs, roof signs, portable signs, freestanding pole signs, vehicle signs, and tethered balloons, among others (§ 18.49.060(I)).

Rialto Gateway Specific Plan / Freeway-oriented areas

Special provision: multi-tenant freeway-oriented business signs are allowed along parts of I‑10 in the Rialto Gateway Specific Plan with much larger height and area allowances to achieve visibility above freeway trees. Limits include an upper-most business sign up to 100 ft above grade and an overall structure up to 120 ft, with combined business sign area up to 1,000 sq ft, and single-business signs up to 500 sq ft; the planning commission must review the design (§ 18.102.060(K)).

Foothill Boulevard planned right-of-way

Special prohibition: it is unlawful to erect a sign within the Foothill Boulevard planned right-of-way (defined as within 55 ft of the centerline), and nonconforming signs in that ROW were ordered removed by a past deadline; see § 18.62.010 and § 18.62.040. If your parcel abuts Foothill, verify ROW lines early.

Quick standards table (decision-relevant)

Sign type	Most important numeric limits / rule	Code reference
Monument sign	One per lot; max 20 sq ft area; max 5 ft height; no portion in ROW	§ 18.102.060(D)
Freestanding (commercial)	One per lot; max 40 sq ft area; max 20 ft height; 5 ft ROW setback; 40 ft separation min	§ 18.102.060(H)
Freestanding (M-1/M-2)	May increase to 80 sq ft and 25 ft height	§ 18.102.060(I)(2)
Projecting sign	Max 4.5 sq ft (single display face); max height 15 ft above sidewalk; 8 ft vertical clearance; max extension 3 ft or 33% of sidewalk width	§ 18.102.060(C)
Awning signs	Up to 20% of total aggregate sign area; letter height ≤ 6 in	§ 18.102.060(F)
Window signs	Max 25% of that window area (some zones allow up to 50% for front elevations in industrial zones)	§ 18.102.060(E) and § 18.102.060(I)(4)
Temporary advertising / banners	Max 30 sq ft (general); display period varies (zones/uses may limit to 21 days with a $50 deposit for some permits) — check zone-specific rules	§ 18.102.060(G); convenience-market subsection § 18.106.060(J)
Off‑site advertising (billboards)	Max 300 sq ft per face; max 25 ft height; min setback 5 ft; spacing and distance-from-residential/parks/schools/freeways apply	§ 18.102.060(J)
Freeway‑oriented multi‑tenant sign (Gateway)	Upper-most sign ≤ 100 ft; overall ≤ 120 ft; total signs combined ≤ 1,000 sq ft; single sign ≤ 500 sq ft; planning commission review required	§ 18.102.060(K)

Permit & review processes — practical guidance

Sign permit submittal: the city's sign chapter requires a plotted site plan showing sign location and street frontages, an elevation showing size/height/illumination, structural calculations prepared by a licensed engineer or architect (where required), material/color samples, photographs, and payment of applicable fees. The checklist is shown in the municipal sign material (see the municipal code excerpts for the submittal list). For the full listed checklist see the city's sign chapter excerpts.
Design review: signs in the Downtown Revitalization Overlay and projects subject to a precise plan must be reviewed for compatibility — sign design/location is a review criterion for precise plans and overlay projects (§ 18.49.040 and § 18.49.060). See Rialto Design Review.
Encroachment permits: banners or street-light banners in the ROW need public-works review and an encroachment permit from the city engineer (§ 18.102.060(G) and downtown overlay provisions).
Structural/electrical: illuminated or large signs need to meet the state building code and the sign chapter's structural/permitting rules — coordinate with building division and reference California Building Standards Code.

Checklist

Confirm zoning designation for the parcel and applicable overlay(s) (e.g., Downtown Revitalization Overlay, Rialto Gateway Specific Plan) and read zone-specific sign allowances.
Determine sign type and match to the sign chapter subsection (monument, freestanding, wall, awning, window, projecting, temporary, off-site).
Verify quantitative limits (area, height, setbacks, separations) for that district (§ 18.102.060—subsections D–K).
Prepare plot plan, elevations, structural calculations (engineer/architect when required), color/material samples, photos — follow the sign submittal checklist.
Check for nonconforming signs on the site and whether removal or modification is required before new sign approval (§ 18.102.070).
If in downtown overlay, obtain design approval per overlay review process (§ 18.49.040/§ 18.49.060). See Rialto Overlay Districts and Rialto Design Review.
If sign encroaches into a public ROW element (street‑light banners, etc.), apply for an encroachment permit from Public Works.
For billboard relocation or new off‑site advertising proposals, confirm eligibility and follow the relocation-agreement and city‑council/planning‑commission review steps (§ 18.102.080).

Risks & Ambiguities

Issue	Why it matters	What to verify
Electronic / flashing displays	Downtown overlay expressly prohibits flashing signs; digital signs are subject to extra scrutiny elsewhere. Installing electronic copy without confirmation risks violation.	Confirm whether the specific overlay or zone allows electronic or dynamic displays; consult § 18.49.060(I) and § 18.102.060(J)/(K) as applicable.
Conflicting temporary sign rules	Some excerpts allow 30 days; other zone-specific language limits display to 21 days with a deposit.	Check the zone/use-specific subsection for temporary-sign duration (general sign chapter § 18.102.060(G) vs. convenience-market subsection § 18.106.060(J)).
Nonconforming signs and compensation	State law protects some nonconforming signs from compelled removal without compensation; local code lists grounds for removal.	If there is an existing nonconforming sign, confirm whether it is legal nonconforming and whether removal is required before permitting a new sign (§ 18.102.070).
Foothill Blvd ROW limits	Planned ROW prohibits signs within 55 ft of centerline—this can make a lot of frontage effectively off-limits.	Verify whether your parcel lies within the Foothill planned ROW and whether a pre-2016 nonconforming sign rule applies (§ 18.62.010–.040).
Parcel-level precise plan / I-P exceptions	I-P or Gateway-specific plan parcels can have custom sign standards via precise plan of design.	If your site is in an I-P, Gateway, or Specific Plan area, check the project's precise plan and any conditions of approval — design review findings may control sign allowances.
Exact permit checklist code citation	The sign-permit checklist items are present in the municipal excerpts but the exact municipal-code section number for the checklist was not labeled in the retrieved excerpts.	Review the city's full sign chapter online or contact the Planning Division to confirm the required sign-permit attachments (see the sign chapter excerpts).

Plain-English summary

Rialto ties sign size, height, setbacks and permitted types to the property's zoning and any overlays: small pedestrian zones (downtown) get tight design controls and a list of prohibited sign types, commercial zones allow freestanding signs with moderate size limits, industrial zones allow larger freestanding signs, and billboards/off‑site displays have their own strict spacing and location rules—always check the sign chapter subsections and overlay rules before you design. Key controlling sections include § 18.102.060 (permitted sign types and limits), § 18.102.070 (nonconforming signs), § 18.102.080 (relocation agreements), and the Downtown/overlay sign provisions (§ 18.49.040/§ 18.49.060).

Source References

City of Rialto municipal code — sign chapter and permitted sign subsections (see § 18.102.060 subsections D–K for monument, window, awning, temporary, freestanding, off‑site and freeway‑oriented signs)
§ 18.102.070 — Nonconforming signs (criteria and removal/compensation language)
§ 18.102.080 — Off‑site advertising structure relocation agreements and council/commission review criteria
Chapter 18.49 — Downtown Revitalization Overlay: design-review and prohibited signs (see § 18.49.040, § 18.49.060, § 18.49.070)
Chapter 18.62 — Foothill Boulevard planned ROW and nonconforming signs removal (§ 18.62.010–.040)
Convenience market / fuel station signage specifics — Chapter 18.106.060(J) (temporary sign rules, fuel pricing signage allowances)
Sign-permit submittal checklist and sign-review notes (municipal-code excerpts) — sign chapter submittal list (plot plan, elevations, structural calculations, fees)
California Building Standards Code (for structural/electrical requirements that apply to sign construction)

Sources

Retrieved passages

Rialto Zoning Code (Section 18.102.080) High relevance
Rialto Zoning Code (Section 18.102.060) High relevance
Rialto Zoning Code (chapter is) High relevance
Rialto Zoning Code (Section 18.102.080) Medium relevance
Rialto Zoning Code (§ 1) Medium relevance
Rialto Zoning Code (chapter is) Medium relevance
Rialto Zoning Code (Section 5412) Medium relevance
Rialto Zoning Code (§ 3) Medium relevance

Cited sections

Official Rialto code library

Frequently asked questions

What sign types am I allowed on a standard commercial lot in Rialto?

Most commercial lots in C-1/C-2/C-3 can use wall, window, awning, projecting, and one freestanding/monument sign subject to area, height and setback limits in the sign chapter; freestanding limits for commercial lots are typically 40 sq ft and 20 ft height with a 5 ft ROW setback (§ 18.102.060(H)) .

Can I install a billboard anywhere in Rialto?

No. Off‑site advertising structures (billboards) are permitted only in particular commercial and manufacturing zones (C-3, C-M, M-1, M-2) and must meet strict limits: 300 sq ft per face, max 25 ft height, minimum set‑backs and separation from residential, schools/parks/churches, and freeways (§ 18.102.060(J)) .

Are digital or flashing signs allowed downtown?

The Downtown Revitalization Overlay expressly prohibits flashing signs and other sign types not compatible with the downtown character; electronic/dynamic displays will face close scrutiny under the overlay’s design‑review rules (§ 18.49.060(I) and § 18.49.040) .

Do I need design review for a new sign in downtown Rialto?

Yes. The overlay makes sign design and location a reviewable item; the community development director or planning commission reviews signs as part of precise plan/design review per § 18.49.040 and § 18.49.060. See Rialto Design Review. .

What happens if my property already has a nonconforming sign?

Nonconforming signs are addressed in the sign chapter; the code recognizes the status of lawful nonconforming signs and limits compelled removal without compensation, but it also lists specific circumstances that allow removal (e.g., abandonment, unsafe condition). Confirm eligibility and removal conditions under § 18.102.070. .

How big can a freestanding sign be on an industrial lot (M-1/M-2)?

In M-1 and M-2 zones, freestanding signs may be larger than in commercial zones — up to 80 sq ft and 25 ft height under the industrial subsection (§ 18.102.060(I)(2)) .

Do temporary banners require a permit and are there time limits?

Yes. Temporary advertising signs are size-limited (commonly 30 sq ft) and are limited in display duration; some zone/use rules further restrict display to 21 days and may require a deposit for removal — check the sign chapter and the specific zone provisions (see § 18.102.060(G) and zone-specific text such as the convenience-market subsection § 18.106.060(J)). .

Are there special rules for signs facing the I‑10 (freeway)?

Yes. The Rialto Gateway Specific Plan allows special multi‑tenant freeway‑oriented signs to be taller and larger (upper sign up to 100 ft, overall 120 ft, combined area up to 1,000 sq ft, single business sign up to 500 sq ft) but such structures require planning‑commission review (§ 18.102.060(K)) .

Can I hang banners on city street lights?

Street‑light banners can be permitted but require review by Public Works and an encroachment permit from the city engineer; see the banner/encroachment notes in the sign chapter and the overlay language where applicable (§ 18.102.060(G) and overlay provisions). .

Where do I find the exact list of materials to submit with a sign permit?

The municipal sign chapter lists the sign‑permit submittal requirements (plot plan, elevations, structural calculations, photos, samples, fees) in the code excerpts; confirm the precise list and the section number with the Planning Division (the submittal checklist appears in the sign chapter excerpts).

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