FIRST ONSITE Property

What They Do

Water DamageMoldFire and SmokeBiohazardStormOdorContents

• Fire damage cleanup & repair
• Remodeling
• Water damage-related cleanup & repair
• Water damage-related mold removal
• 24 Hr Emergency Response
• Catastrophic Event Restoration
• Climate Control
• Commercial Contracting
• Commercial Properties
• Comprehensive Reconstruction Services
• Content Recovery
• Content Restoration
• Customer Support
• Damage Control
• Demolition Services
• Disaster Planning
• Disaster Recovery
• Disaster Strikes
• Document Recovery
• Document Restoration
• Drying & Dehumidification
• Emergency Mitigation
• Emergency Response Planning
• Emergency Restoration Services
• Emergency Water Cleanup
• Emergency Water Damage
• Environmental Remediation
• Finish Work

Compare Them With Others in Rockville

• All 23 water damage restoration companies in Rockville
• All 21 mold remediation companies in Rockville
• All 14 fire and smoke damage restoration companies in Rockville
• All 6 biohazard and trauma cleanup companies in Rockville

In Their Own Words

We are FIRST ONSITE, a leading disaster restoration and property reconstruction company serving North America and beyond. We offer comprehensive, coast-to-coast coverage and service across all 50 United States and Canada, with the equipment, technology and expertise to respond to disasters of all kinds. We’re proud to provide expert planning, remediation, restoration and reconstruction services for essential industries of every kind: including healthcare, education, retail, residential and more. 24/7 Emergency Response, No Matter What In an emergency, every second counts, so our team of professionals is always ready to rapidly respond. With 24/7 emergency service, 365 days a year, your call for help is our call to action. Our speed and e...

Written by the business on its public profile. We have not verified these claims.

Before You Call FIRST ONSITE Property

1. Do you take moisture readings every day and will you give me the drying log?
2. Are your technicians certified in water damage restoration?
3. Where do you think the moisture is coming from, and who fixes it?
4. Will you set up containment and negative air, and how will you protect the rest of the home?
5. How will you deal with smoke odor inside wall cavities and the HVAC ducts?

Ask for the license that fits where you live, a DC home improvement license, a Maryland Home Improvement Commission license or a Virginia Board for Contractors license, and look it up with that agency. Also ask for proof of insurance and industry certification for the technicians.

Reviews on Other Sites

• Yelp

  2.1 from 7 reviews

  Read on Yelp

Found on each site on September 24, 2026 and matched to this location. Ratings on different sites use different rules, so read a few reviews rather than comparing the numbers.

How Their Reviews Break Down

Counts from public listings as of September 23, 2026. A handful of reviews says less than a few hundred.

Read This While You Wait

• DIY with careWhat to Do in the First 24 Hours After Water DamageAn hour by hour plan for the first day after water damage. Make it safe, stop the source, document, remove water and start drying before mold can start.
• DIY with careSafe DIY Mold Cleanup for Areas Under 10 Square FeetA step by step method to clean up mold under 10 square feet safely, with the gear to buy, what to throw away, why bleach is not the default, and when to stop.
• Call a proThe First 48 Hours After a House FireWhat to do in the first two days after a house fire. Safe re-entry, utilities, insurance calls, securing the home, food, medicine and what never to clean.
• Call a proTrauma and Unattended Death Cleanup, What Families Should KnowA gentle guide for families after a death or injury at home. What you do not have to do yourself, how cleanup works, who pays, and how to choose a crew.