Monrovia — Signage

Last reviewed: July 2, 2026

Overview

This page summarizes what the Monrovia zoning ordinance (Title 17) requires for signs: who approves them, allowable sign types by zone, size/illumination limits for specialty signs (electronic message boards, service-station price signs, awnings, window and sidewalk signs), and rules for nonconforming/abandoned signs. The Development Review Committee (DRC) is the local design gatekeeper for almost all sign design/placement decisions. See the city’s zoning map for district names and boundaries in the Monrovia zoning code and how sign rules map to those districts. (§ 17.04.030; § 17.28.030)

Note: this page stays strictly to the zoning/sign rules in Monrovia’s code. For structural fixes, electrical work, accessibility or other building-permit issues consult the California Building Standards Code (Title 24). (Verify with the jurisdiction.) California Building Standards Code

How the sign rules are organized in Monrovia

• The sign chapter requires DRC approval for design/placement of all signs unless the code explicitly allows a sign without review (§ 17.28.030) .
• Allowed types and which zones may have them are shown in the Nonresidential Signs — Permitted Signs Chart (§ 17.28.090) and spelled out in the Nonresidential Sign Types and Sizes section (§ 17.28.100) .
• Residential sign rules (identification, real estate, construction) are treated separately (§ 17.28.080) .
• Specialty/technical standards (electronic message boards, gas-price signs, balloons, sidewalk signs, neon tube lighting) are in dedicated sub-sections (for example § 17.28.135 for electronic message boards; see § 17.28.100 et seq. for other types) .

Because final appearance and placement are discretionary, applicants should expect design review under the city’s design-review procedures. Monrovia Design Review

District-by-district breakdown

Below are the actual Monrovia zone names (from § 17.04.030) with a short, sign-specific summary for each district. Use these as a zoning-aware checklist — the detailed allowable sign types for nonresidential uses are in the sign chart (§ 17.28.090) and in the sign-types rules (§ 17.28.100). Always confirm with DRC for site-specific decisions. (§ 17.04.030; § 17.28.090; § 17.28.030)

Note: the ordinance groups many commercial “use contexts” (for the sign chart) that are used operationally in sign review — for example Old Town (HCD), Foothill Boulevard, Shopping Center, Service Station, Business Parks, Office Building (3+), Auto Center, and All Others. Those columns are used in the permitted-signs chart. (§ 17.28.090)

RF, RE, RL (Residential zones)

• Purpose / typical uses: single-family and estate residential neighborhoods (listed in § 17.04.030).
• Signage: residential identification signs (one per street frontage for multi-unit projects), small real-estate and construction signs, and limited temporary display signs are allowed. Illumination must be indirect/shadow-lit; no flashing or exposed neon; DRC may approve larger identification signs only by exception. (§ 17.28.080; § 17.28.140)
• Key dimensional notes: identification signs for properties with five or more dwelling units are limited to 6 sq ft per frontage; for-sale/for-rent signs for new construction are capped at 24 sq ft; real-estate signs are commonly limited to 6 sq ft (§ 17.28.070–.080).

RM3500, RM3000, RM2500, RM (Medium-density residential)

• Purpose / typical uses: duplexes, small multi-family projects (zones listed in § 17.04.030).
• Signage: similar to single-family residential rules with allowances for project identification signs, nameplates, and limited real-estate signage (§ 17.28.070–.080). DRC may allow larger signs for large multi-family projects if architecturally compatible. (§ 17.28.080)

RH (Residential High-Density)

• Purpose / typical uses: higher-density apartments and mixed residential. (§ 17.04.030)
• Signage: project identification allowed but certain sign types are explicitly disallowed (for example, marquee signs are not permitted in RH) — refer to the types table and the wall/marquee rules. (§ 17.28.100(4))

NC (Neighborhood Commercial)

• Purpose / typical uses: small retail and neighborhood services. (§ 17.04.030)
• Signage: typical business wall signs, awning signs, window signs, and a limited sidewalk sign program (subject to DRC and ADA clearance). See sidewalk sign dimensions and encroachment permit requirement. (§ 17.28.100; sidewalk rules)

HCD (Historic Commercial Downtown / Old Town)

• Purpose / typical uses: Old Town commercial core (Historic Commercial Downtown). (§ 17.04.030)
• Signage: Old Town has specific, tighter dimensional limits and design controls: building wall signs limited (Old Town building face and/or entrance signs limited to a 3 ft high background and 2 ft letter height; window signs limited to 10% of window area), strict awning and sidewalk sign rules tied to historic compatibility, and some sidewalk/display sign allowances with time limits. DRC reviews compatibility with historical character. (§ 17.28.100; sidewalk/awning/window rules)
• Historic-review overlay: Old Town sign work is often reviewed under historic preservation guidelines as part of design review — expect extra scrutiny. Monrovia Historic Preservation (Verify with the jurisdiction.)

CRS, RCC, RCM, O/RD/LM, BE, M (Commercial/Office/Industrial districts)

• Purpose / typical uses: these zones cover regional commercial corridors, research/office, retail corridors, business enterprise, and manufacturing uses. (§ 17.04.030)
• Signage: full range of nonresidential signs may be allowed depending on the specific sub-context in the sign chart (wall signs, monument signs, pole signs, tenant directories, electronic message boards subject to § 17.28.135). Service-station-specific sign standards (pole/monument emblem and price sign rules) are in the sign chapter. (§ 17.28.090; § 17.28.100; service-station rules)

Service Station (gas station) — specific rules

• One price + emblem pole sign is allowed under strict area/height limits; monument price signs have different area/height caps and landscaping requirements; electronic fuel price signs are allowed for the price portion only and must be static (no animated effects) and meet illumination rules. (§ 17.28.100; service station subsection)

Auto Center

• Purpose / typical uses: new-car dealerships — permitted to use larger freestanding and balloon signage under specific rules (balloon height/duration, frequent but limited short displays without DRC for brief promotions). (§ 17.28.100; balloon rules)

Shopping Center, Office Building (3+), Business Parks

• These context labels in the chart reflect different allowed combinations of wall, monument, directory and freestanding identification signs; detailed allowances appear in the permitted-signs chart (§ 17.28.090) and in the sign-type definitions/limits (§ 17.28.100). (§ 17.28.090; § 17.28.100)

PD / SP (Planned Development / Specific Plan)

• Purpose / typical uses: site-specific zoning regimes. Signage in PD/SP areas is controlled by the specific plan/PD approvals and the general sign chapter; the DRC/Planning Commission will determine compatibility within that plan’s standards. (Verify with the jurisdiction.) (§ 17.04.030; § 17.28.030)

Quick reference table — common, decision-relevant sign standards

(Refer to the Nonresidential Signs Chart for zone-by-zone permitted types and the sign-type text for precise dimensional rules.) (§ 17.28.090; § 17.28.100)

Practical guidance and interpretation (plain-English synthesis)

• Expect Design Review: Monrovia treats sign form as part of site design — the DRC reviews material, color, size and placement. Even where a sign type is "permitted" in a zone, the DRC will control appearance and exact placement (§ 17.28.030).
• Use the sign chart as the zone checklist: the permitted-signs chart (§ 17.28.090) shows which sign types are allowed in which commercial contexts (Old Town/HCD, Foothill, Shopping Center, Service Station, etc.). If a sign type is not listed as allowed, it is prohibited except as a "Special Advertising Device" under DRC interpretation. (§ 17.28.090; definition of Special Advertising Device)
• Electronic signs are tightly controlled: message hold times, static-only display (no video/motion), luminance caps and automatic dimming are required, plus a contact for shutdown in case of malfunction. Expect a minor CUP or DRC-imposed conditions. (§ 17.28.135)
• Old Town has extra constraints: smaller letter/background limits, restrictions on internally lit awnings and neon, and historic-compatibility review for sidewalk displays. Monrovia Historic Preservation (§ 17.28.100(2); awning/window/sidewalk rules)
• Sidewalk signs require ADA clearance, insurance naming the city, and a city encroachment permit before placement in the public right-of-way. A-frames are explicitly prohibited. (§ 17.28.100(2)(a),(j),(k))
• Balloons and promotional displays are allowed in limited situations and often require DRC approval; anchorage points commonly require a building permit (see Title 24 for structural/electrical permitting). (§ 17.28.100; balloon rules)

Also consider adjacent site factors such as visibility to parked cars or driveways — coordinate sign placement with the site’s curb/parking layout and sight lines. Monrovia Parking (Verify with the jurisdiction.)

Checklist

• Confirm the zoning district for the property and check the permitted-signs chart (§ 17.28.090) to identify allowed sign types.
• Prepare sign elevation(s) and area calculations (wall % of façade, monument face area, pole sign face and height). Use the sign-type limits in § 17.28.100.
• If in Old Town / HCD, prepare historic-compatibility materials and note the stricter Old Town size/awning/window rules. Monrovia Historic Preservation
• For electronic message boards, prepare manufacturer lighting/luminance specs and ambient-sensor/dimming plan; include operations plan and contact for shutdown. (§ 17.28.135)
• For sidewalk or any sign on public property, obtain city encroachment permit, provide required insurance naming the city, and verify ADA clearance. (§ 17.28.100(2)(j))
• For balloons / anchored promotional devices, confirm building permit requirements and DRC conditions; include anchorage details. (§ 17.28.100 (balloon rules))
• Check nonconforming status and maintenance obligations; remove/repair signs as required by § 17.28.140–.150.
• Submit to the Development Review Committee (or applicable reviewer) with a full sign program per site, and verify whether a minor CUP or Planning Commission review is required (e.g., freeway signs). (§ 17.28.030; freestanding freeway sign CUP rules)

Risks & Ambiguities

Plain-English Summary

Monrovia’s zoning code treats signs as part of site design: most signs need Development Review Committee approval, sizes and illumination are tightly regulated (especially for Old Town, service stations, and electronic displays), sidewalk signs need encroachment permits and insurance, and nonconforming or abandoned signs must be fixed or removed. Check the sign chart and the sign-type rules in Title 17 before you buy or fabricate a sign. (§ 17.28.030; § 17.28.090; § 17.28.100)

Source References

• Monrovia Comprehensive Zoning Law (Title 17) — Districts established (§ 17.04.030)
• Sign regulation overview — DRC approval requirement (§ 17.28.030)
• Nonresidential signs — permitted-signs chart (§ 17.28.090) and sign types/sizes (§ 17.28.100)
• Electronic message boards / electronic sign operational limits (§ 17.28.135)
• Sidewalk signs, balloons and special sign types (§ 17.28.100(2) and specialty subsections)
• Service station signs and electronic fuel price sign rules (service station subsection)
• Nonconforming signs, maintenance, abandoned signs (§ 17.28.140–.160)
• Source repository noted in the code file header: the Monrovia zoning ordinance in the city code (codelibrary/amlegal) — verify live text at the city code library. (Verify with the jurisdiction.)

Retrieved passages

• Monrovia Zoning Code High relevance show source text
• Monrovia Zoning Code (section or) High relevance show source text
• Monrovia Zoning Code (§ 17.44.010) High relevance show source text
• Monrovia Zoning Code (title required) Medium relevance show source text
• Monrovia Zoning Code (§ 17.28.135) Medium relevance show source text
• Monrovia Zoning Code (§ 9) Medium relevance show source text
• Monrovia Zoning Code (§ 17.28.135) Medium relevance show source text
• Monrovia Zoning Code Medium relevance show source text

Cited sections

• Monrovia Comprehensive Zoning Law (Title 17) — Districts established (§ 17.04.030) (Title 17)
• Sign regulation overview — DRC approval requirement (§ 17.28.030) (§ 17.28.030)
• Nonresidential signs — permitted-signs chart (§ 17.28.090) and sign types/sizes (§ 17.28.100) (§ 17.28.090)
• Electronic message boards / electronic sign operational limits (§ 17.28.135) (§ 17.28.135)
• Sidewalk signs, balloons and special sign types (§ 17.28.100(2) and specialty subsections) (§ 17.28.100)
• Service station signs and electronic fuel price sign rules (service station subsection)
• Nonconforming signs, maintenance, abandoned signs (§ 17.28.140–.160) (§ 17.28.140)
• Source repository noted in the code file header: the Monrovia zoning ordinance in the city code (codelibrary/amlegal) — verify live text at the city code library. (Verify with the jurisdiction.)
• Monrovia_ZoningCode.md

• Official Monrovia code library