The only partner you’ll ever need.

First Onsite builds, protects, and restores critical infrastructure and commercial property for clients who cannot afford delays or downtime. We deliver construction, emergency response and restoration, operations & maintenance, program management, and environmental services — across 110+ locations in North America.

Critical infrastructure support and property damage services available 24/7/365

First Onsite is a large-scale construction, property restoration, and emergency response company serving commercial, industrial, and government clients globally. With 110+ locations and 2,600+ team members, we build and sustain mission-critical infrastructure and execute complex programs in environments where delays and downtime are not options. Our capabilities include large complex construction, power generation and distribution, environmental services, emergency response and stabilization, and property restoration. First Onsite is a subsidiary of FirstService Corporation (NASDAQ: FSV).

Preparedness

Our tailored emergency response plans are designed to ensure swift action, minimizing downtime and damage. With comprehensive strategies and clear protocols, we equip you to handle any emergency efficiently and effectively.

Water Damage Restoration

Our water damage restoration services cover everything from leaks and pipe bursts to major flooding. We use advanced drying techniques and moisture detection tools to prevent mold growth and structural damage.

Fire & Smoke Damage Restoration

Fires can cause extensive damage, not just from flames but also from smoke and soot. Our comprehensive fire damage restoration includes cleaning, deodorization, and structural repairs to ensure your property is safe and habitable.

Storm Damage Restoration

Our 24/7 emergency response team is always on standby, ready to spring into action at a moment’s notice. We prioritize rapid response to mitigate damage and start the restoration process immediately following severe weather.

Mold Remediation

Mold can pose serious health risks and damage your property’s structure. Our mold remediation services include thorough inspection, containment, removal, and prevention measures to protect your property and health.

Reconstruction

Beyond cleanup and initial repairs, we offer full-scale reconstruction services to rebuild your property to its pre-loss state. Our skilled construction teams manage everything from minor repairs to major rebuilds, ensuring quality and integrity in every project.

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FIRST ONSITE’S PREMIER PROPERTY RESTORATION LOCATIONS

GET 24/7 LOCAL ASSISTANCE

With over 110 locations across North America, our regional teams are able to respond quickly to your property damage. Whether you’re dealing with water damage, fire damage, mold, or storm damage, our scalable solutions ensure that your restoration needs are met with precision and care, minimizing downtime and maximizing recovery. As your dedicated property restoration partner, our teams are committed to providing the best possible customer service, making a positive difference, and doing the right thing, no matter what.

FIND YOUR NEAREST LOCATION

PROPERTY RESTORATION SPECIFIC TO YOUR INDUSTRY

We specialize in understanding disaster recovery and property restoration as it applies to your industry.

Commercial Properties

Healthcare

Multifamily Residential

Industry & Manufacturing

Education

Insurance Providers

Government

Hospitality

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Latest News

We believe sharing insights and actively supporting the communities we serve strengthens trust, advances the restoration industry, and helps us better protect what matters most.

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News

Six-in-10 Americans Concerned About Infectious Disease Risk in Public Settings

Restoration & Remediation Magazine | May 28, 2026

The First Onsite Survey on Environmental and Public Risk Perception reveals that indoor environmental risk has become a baseline concern across generations and regions.

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News

Most Americans Not Prepared for Property Emergencies

Cleanfax | April 30, 2026

New data survey from First Onsite and Angus Reid Group puts a number on the gap between knowing weather is coming and being prepared for it.

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News

Hidden Hazards of Fentanyl Cleanup

Cleanfax | April 20, 2026

First Onsite’s Thomas Licker shares why fentanyl contamination requires specialized training, certified teams, and strict protocols to protect workers and building occupants.

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REDUCE YOUR DOWNTIME WITH A PRE-LOSS PLAN

Creating a disaster response plan allows us to respond even more quickly and effectively. By meeting with you before any damage occurs, our teams can familiarize themselves with your property, identify important points of concern, and develop a customized plan tailored to your facility’s unique requirements. This preplanning helps us to equip you with the necessary resources to react rapidly when the need arises.

Pre-loss Partnership Program

Create a response plan for any disaster
Establish a point of contact dedicated to you
Speed up response time and the restoration process as well as reduce the amount of downtime
Access to resources like storm preparation tips and lunch and learns

Let us help you prepare for the unexpected

When disaster strikes, knowing what to expect can make a world of difference. Discover what our specialists have to say about preparing for disaster, expediting recovery, and everything in between. We’re here to help, always.

Hurricane House Case Study

CLIENT STORIES

Hurricane Ian: Multifamily Restoration Case Study

See how First Onsite restored Hurricane House, a 15-unit multifamily property on Sanibel Island, after Hurricane Ian. Learn how pre-storm planning made rapid recovery possible.