Insights

Integrated Facility Solutions Guardian Service Industries operates across janitorial, security, and engineering & operations, providing a single vendor solution. This positions them to upsell bundled facilities services to existing clients and cross-sell maintenance and specialty services like pest control, lighting, and restoration.

Large Customer Base With over 1,000 clients and a footprint covering commercial, government, residential communities, schools, and transportation hubs, there are ample opportunities to expand in underpenetrated verticals or geographies within their service areas in the Northeast and Mid-Atlantic.

Scale and Stability Revenue range indicates substantial scale (one billion plus) and an established, family-owned operation since 1918. This can be leveraged in sales conversations to build trust, propose long-term contracted services, and win enterprise-level security and facilities management deals.

Tech Enablement Adoption of enterprise software and CMS tools (Tyler Munis, Entrata, WP Engine, Chart.js, etc.) suggests readiness for data-driven proposals, performance dashboards, and integrated service management, enabling value-based selling around reporting, SLAs, and cost efficiencies.

Strategic Growth Fit Service breadth aligns with common client needs for bundled solutions across janitorial, security, and operations, creating cross-selling opportunities into existing accounts and attracting prospects seeking a holistic facilities partner with a proven multi-service track record.

Guardian Service Industries, Inc. Tech Stack

Guardian Service Industries, Inc. uses 8 technology products and services including Tyler Technologies Munis, CookieYes, E-Verify, and more. Explore Guardian Service Industries, Inc.'s tech stack below.

  • Tyler Technologies Munis
    Accounting
  • CookieYes
    Cookie Compliance
  • E-Verify
    Identity Verification
  • JSON-LD
    Javascript Frameworks
  • Microsoft Windows
    Operating Systems
  • Themify Builder
    Page Builders
  • WP Engine
    Platform As A Service
  • Yoast SEO
    Search Engines

Guardian Service Industries, Inc.'s Email Address Formats

Guardian Service Industries, Inc. uses at least 1 format(s):
Guardian Service Industries, Inc. Email FormatsExamplePercentage
FLast@guardian-service.comJDoe@guardian-service.com
93%
First.Last@guardian-service.comJohn.Doe@guardian-service.com
4%
Last@guardian-service.comDoe@guardian-service.com
2%
F.Last@guardian-service.comJ.Doe@guardian-service.com
1%

Frequently Asked Questions

What is Guardian Service Industries, Inc.'s phone number?

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You can contact Guardian Service Industries, Inc.'s main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Guardian Service Industries, Inc.'s official website and social media links?

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Guardian Service Industries, Inc.'s official website is guardian-service.com and has social profiles on LinkedIn.

How much revenue does Guardian Service Industries, Inc. generate?

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As of July 2026, Guardian Service Industries, Inc.'s annual revenue is estimated to be $1B - $10B.

What is Guardian Service Industries, Inc.'s SIC code NAICS code?

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Guardian Service Industries, Inc.'s SIC code is 1799 - Special Trade Contractors, Not Elsewhere Classified NAICS code is 5612 - Facilities Support Services.

How many employees does Guardian Service Industries, Inc. have currently?

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As of July 2026, Guardian Service Industries, Inc. has approximately 456 employees across 3 continents, including North AmericaAsiaEurope. Key team members include Chief Operating Officer & Principal: H. B.Chief Engineer: C. L.President: C. D.. Explore Guardian Service Industries, Inc.'s employee directory with LeadIQ.

What industry does Guardian Service Industries, Inc. belong to?

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Guardian Service Industries, Inc. operates in the Facilities Services industry.

What technology does Guardian Service Industries, Inc. use?

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Guardian Service Industries, Inc.'s tech stack includes Tyler Technologies MunisCookieYesE-VerifyJSON-LDMicrosoft WindowsThemify BuilderWP EngineYoast SEO.

What is Guardian Service Industries, Inc.'s email format?

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Guardian Service Industries, Inc.'s email format typically follows the pattern of FLast@guardian-service.com. Find more Guardian Service Industries, Inc. email formats with LeadIQ.

When was Guardian Service Industries, Inc. founded?

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Guardian Service Industries, Inc. was founded in 1918.
Guardian Service Industries, Inc. logo

Guardian Service Industries, Inc.

Facilities ServicesNew York, United States201-500 Employees

Guardian Service Industries, Inc. is a family-owned facilities services provider founded in 1918. It supplies staffing and management expertise across core maintenance disciplines such as janitorial services, security, and engineering and operations, along with capabilities in pest control, lighting and electrical, window cleaning, front-desk concierge, and restoration of marble, metal, and wood surfaces. The company serves more than a thousand clients and maintains facilities totaling over 110 million square feet across the New England, Northeast, and Mid-Atlantic regions, including commercial buildings, government facilities, residential communities, schools, industrial sites, transportation hubs, and retail locations.

Headquartered in New York City, Guardian is based at 55 Water Street in New York, New York. It employs a mid-sized workforce and offers staffing and subject-matter expertise for facility maintenance across its service lines. The firm serves clients in commercial, government, residential, educational, industrial, and transportation facilities within the facilities services market.

Section iconCompany Overview

Phone number
SIC Code
1799 - Special Trade Contractors, Not Elsewhere Classified
NAICS Code
5612 - Facilities Support Services
Founded
1918
Employees
201-500

Section iconFunding & Financials

  • $1B - $10B

    Guardian Service Industries, Inc.'s revenue is estimated to be in the range of $1B - $10B

Section iconFunding & Financials

  • $1B - $10B

    Guardian Service Industries, Inc.'s revenue is estimated to be in the range of $1B - $10B

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