McMahon Services & Construction Corp

What They Do

Water DamageMoldMold TestingFire and SmokeSewageStormOdorContents

• Fire damage cleanup & repair
• Mold inspection
• Plumbing
• Remodeling
• Roofing
• Sewage cleanup
• Water damage-related cleanup & repair
• Water damage-related mold removal
• Air Duct Cleaning
• Air Scrubbers
• Black Mold Remediation
• Board Up
• Broken Pipe
• Burst Pipes
• Carpet Cleaning
• Cleaned Out
• Cleaning And Disinfecting Services
• Cleaning Your
• Commercial Properties
• Covid Cleaning
• Covid Disinfecting Services
• Deep Clean
• Disaster Restoration
• Flooded Basement
• Frozen Pipes
• General Contracting
• Hour Emergency Restoration Services
• Hvac System Cleaning

In Their Own Words

McMahon Services & Construction Corp provides water and fire damage restoration services for residential and commercial properties in Northern Illinois and Southern Wisconsin. The company handles water mitigation, fire and smoke damage cleanup, mold remediation, storm damage repair, and contents cleaning and storage. Services are performed by technicians trained in restoration industry standards.

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

Before You Call McMahon Services & Construction Corp

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. Do you also do remediation? If so, who checks your work?

Ask for the contractor license your city or village requires, since Illinois has no statewide general contractor license, and ask a roofer for a state roofing license. Also ask for proof of insurance and industry certification for the technicians.

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 proMold Testing, When It Is Worth It and How to Read a Lab ReportWhen a mold test is worth paying for, which kind to ask for, why store kits mislead, and how to read spore counts, outdoor controls and a lab report yourself.
• 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.