Crawl Space Brothers

What They Do

Water DamageMoldMold Testing

• Mold inspection
• Water damage-related mold removal
• Antimicrobial Treatment
• Basement Drying Services
• Basement Flood Cleanup
• Basement Water Damage Repair
• Crawl Space Water Damage
• Crawl Space Water Removal
• Dehumidification Services
• Emergency Water Removal
• Flood Damage Restoration
• Foundation Water Damage
• Moisture Damage Repair
• Mold Prevention
• Mold Remediation
• Structural Drying
• Water Damage Assessment
• Water Intrusion Repair
• Water Removal Services
• Basement Bulkhead Waterproofing
• Basement Dehumidifier
• Basement Drainage System
• Basement Flood Protection
• Basement Floor Crack Repair
• Basement Floor Waterproofing
• Basement Leak Repair
• Basement Moisture Control
• Basement Repair

In Their Own Words

Need expert crawl space encapsulation or basement waterproofing in Arlington, Ballston, and the surrounding areas? Crawl Space Brothers is a trusted, family-owned company delivering hyper-local structural services across Arlington, Ballston, Virginia Square, Clarendon, Rosslyn, and Bluemont. Backed by hundreds of 5-star trusted reviews, our specialized team excels in crawl space repair, foundation repair, vapor barrier installation, mold removal, sump pump installation, and drainage systems. We permanently resolve standing water, crawl space humidity, foundation cracks, and structural concerns to protect Northern Virginia homes. Enjoy reliable, long-lasting results backed by lifetime warranties. Schedule your free inspection today!

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

Before You Call Crawl Space Brothers

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 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.

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.
• DIY friendlyWasher, Dishwasher, Fridge and Toilet Supply Line LeaksHow washer hoses, dishwasher lines, ice maker tubing and toilet supply lines fail, how to clean up each kind of leak, and how to replace a line yourself.