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Gravel drainage along the inside of a crawl space foundation wall

Drainage & Moisture Control

Water around and beneath your home needs a planned way out. We find where it collects, then recommend the drainage, pumping, and humidity control your crawl space, basement, or foundation needs.

Google4.9/ 51,300+ reviews
15,000
Homes protected
Lifetime
Transferable warranty
BBB Accredited Business
A+ Rating
Risk Free
Money-Back Guarantee
Licensed & insured

Which Drainage Solution Do You Need?

Start with what you’re seeing. Each problem points to a different part of the water’s route.

Worker installing a drainage system

Standing water in the crawl space

An interior French drain collects groundwater along the foundation, and a sump pump moves it out from under your home.

Basement drain tile along the floor perimeter

Water on the basement floor

Interior drain tile carries seepage along the floor perimeter to a sump system that pumps it away.

A worker preparing a gutter downspout for an underground drainage connection

Puddles beside the foundation after rain

Underground downspout extensions carry roof runoff to a planned discharge point instead of emptying it next to your walls.

A home exterior with landscaping along the foundation

Water collecting at low vents, windows, or doors

Vent wells and egress drains protect low openings from soil and debris and give surface water a route to drain.

Why Choose Crawl Space Brothers

From French drains to dehumidifiers, Crawl Space Brothers plans drainage and moisture control around your home. Trusted by homeowners since 2019.

A free inspection. A plan built for your home.
Custom-engineered recommendations, a clear written estimate, and room to ask every question.

Get your free inspection
★★★★Google review
“Overall, a good experience! The crew for the service call took care of the excess water in my crawlspace, resecured a drain line, and added new floor lining to the affected section. Oliver, the manager, explained the work and pricing once the crew lead inspected the problem. There was a small mix-up with scheduling —…”
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I wasn’t totally sure if Oliver or the crew was coming out and the timing got a little confusing — but once they were here, everything went smoothly. The work looks great and I’m happy with the results. Would recommend them!”
Meryll C.Verified Google review · Washington, DC · Oct 2025
Lifetime transferable warranty

Lifetime transferable warranty.

Protection that stays with your home, even when you sell.

Money-back guarantee

Your money is never at risk.

We stand behind our work with a written money-back guarantee.

Five-star service guarantee

Five-star service guarantee.

Clear communication. Respect for your home. A service promise we put in writing.

Browse Drainage & Moisture Services

Each service handles one part of the job: collecting water, moving it out, keeping it away, or drying the air.

A sump pump installed in a drainage basin

How Drainage and Moisture Control Work Together

Water problems rarely have one cause. Roof runoff, groundwater, and humid air can all reach the same crawl space or basement, so the fix usually has more than one part.Collect it, move it, keep it awayDrains collect water where it enters. A sump pump carries it out. Exterior extensions keep roof water from coming back, and a dehumidifier handles the moisture left in the air. We inspect the whole route before recommending any piece of it.

Our Drainage Service Process

A free inspection. A written repair plan. The recommended work explained before you decide.

  1. Free Inspection

    We trace where water enters, where it collects, and where it can safely go.

  2. Custom Recommendations

    You’ll get a clear explanation of our findings and a written plan tailored to your home.

  3. Professional Installation

    Our team installs the recommended drainage and moisture controls using proven methods and quality materials.

  4. Final Walkthrough & Warranty

    Before the job is complete, we review the finished work with you and explain applicable warranty coverage.

A specialist reviewing recommendations at a homeowner’s table

What Does Drainage Work Cost?

Cost depends on where the water comes from, how far it has to travel, and which parts of the system your home needs. We provide a free inspection and written estimate before any work begins.

  • No gimmicks or pushy tactics.
  • Clear recommendations and an itemized scope.
  • Time to ask questions before work begins.

Fair & honest pricing.

No sales tactics. No pressure to decide on the spot. Your written estimate explains the work and the price before you make a commitment.

Your money is never at risk.Our written money-back guarantee stands behind the work.

What homeowners are saying.

4.9 ★ average across 1,300+ Google reviews · BBB A+ accredited.

Find Your Local Team

Crawl Space Brothers serves homeowners across the Carolinas, Tennessee, and the Mid-Atlantic. Choose your city for local service details and a free inspection.

District of Columbia, District of ColumbiaAnne Arundel, MarylandBaltimore, MarylandCalvert, MarylandCarroll, MarylandCharles, MarylandFrederick, MarylandHoward, MarylandMontgomery, MarylandPrince George's, MarylandQueen Anne's, MarylandSt. Mary's, MarylandTalbot, MarylandWashington, MarylandBaltimore, MarylandArlington, VirginiaCaroline, VirginiaClarke, VirginiaCulpeper, VirginiaFairfax, VirginiaFauquier, VirginiaFrederick, VirginiaKing George, VirginiaLoudoun, VirginiaMadison, VirginiaOrange, VirginiaPrince William, VirginiaRappahannock, VirginiaSpotsylvania, VirginiaStafford, VirginiaWarren, VirginiaWestmoreland, VirginiaAlexandria, VirginiaFairfax, VirginiaFalls Church, VirginiaManassas, VirginiaManassas Park, VirginiaJefferson, West VirginiaAlamance, North CarolinaAlexander, North CarolinaAnson, North CarolinaAvery, North CarolinaBeaufort, North CarolinaBertie, North CarolinaBladen, North CarolinaBrunswick, North CarolinaBuncombe, North CarolinaBurke, North CarolinaCabarrus, North CarolinaCaldwell, North CarolinaCaswell, North CarolinaCatawba, North CarolinaChatham, North CarolinaCherokee, North CarolinaClay, North CarolinaCleveland, North CarolinaColumbus, North CarolinaCraven, North CarolinaCumberland, North CarolinaDavidson, North CarolinaDavie, North CarolinaDuplin, North CarolinaDurham, North CarolinaEdgecombe, North CarolinaFranklin, North CarolinaGaston, North CarolinaGates, North CarolinaGraham, North CarolinaGranville, North CarolinaGreene, North CarolinaHalifax, North CarolinaHarnett, North CarolinaHaywood, North CarolinaHenderson, North CarolinaHertford, North CarolinaHoke, North CarolinaHyde, North CarolinaIredell, North CarolinaJackson, North CarolinaJohnston, North CarolinaJones, North CarolinaLee, North CarolinaLenoir, North CarolinaLincoln, North CarolinaMcDowell, North CarolinaMacon, North CarolinaMadison, North CarolinaMartin, North CarolinaMecklenburg, North CarolinaMitchell, North CarolinaMontgomery, North CarolinaMoore, North CarolinaNash, North CarolinaNew Hanover, North CarolinaNorthampton, North CarolinaOnslow, North CarolinaOrange, North CarolinaPamlico, North CarolinaPender, North CarolinaPerson, North CarolinaPitt, North CarolinaPolk, North CarolinaRandolph, North CarolinaRobeson, North CarolinaRowan, North CarolinaRutherford, North CarolinaSampson, North CarolinaStanly, North CarolinaSwain, North CarolinaTransylvania, North CarolinaTyrrell, North CarolinaUnion, North CarolinaVance, North CarolinaWake, North CarolinaWarren, North CarolinaWashington, North CarolinaWatauga, North CarolinaWayne, North CarolinaWilkes, North CarolinaWilson, North CarolinaYadkin, North CarolinaYancey, North CarolinaAbbeville, South CarolinaAnderson, South CarolinaCherokee, South CarolinaChester, South CarolinaChesterfield, South CarolinaEdgefield, South CarolinaFairfield, South CarolinaGreenville, South CarolinaGreenwood, South CarolinaKershaw, South CarolinaLancaster, South CarolinaLaurens, South CarolinaLee, South CarolinaLexington, South CarolinaMcCormick, South CarolinaNewberry, South CarolinaOconee, South CarolinaPickens, South CarolinaRichland, South CarolinaSaluda, South CarolinaSpartanburg, South CarolinaUnion, South CarolinaYork, South CarolinaBedford, TennesseeCannon, TennesseeCheatham, TennesseeClay, TennesseeCoffee, TennesseeCumberland, TennesseeDavidson, TennesseeDeKalb, TennesseeDickson, TennesseeFentress, TennesseeFranklin, TennesseeGiles, TennesseeGrundy, TennesseeHickman, TennesseeHouston, TennesseeHumphreys, TennesseeJackson, TennesseeLawrence, TennesseeLewis, TennesseeLincoln, TennesseeMacon, TennesseeMarion, TennesseeMarshall, TennesseeMaury, TennesseeMontgomery, TennesseeMoore, TennesseeOverton, TennesseePerry, TennesseePutnam, TennesseeRobertson, TennesseeRutherford, TennesseeSmith, TennesseeStewart, TennesseeSumner, TennesseeTrousdale, TennesseeVan Buren, TennesseeWarren, TennesseeWayne, TennesseeWhite, TennesseeWilliamson, TennesseeWilson, TennesseeAllen, KentuckyBarren, KentuckyButler, KentuckyChristian, KentuckyEdmonson, KentuckyLogan, KentuckySimpson, KentuckyTodd, KentuckyWarren, Kentucky
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Service availability varies within highlighted counties. Check your ZIP code to find your team.

Drainage & Moisture FAQs

Do I need a French drain or a sump pump?

Often both. A French drain collects water along the foundation, and a sump pump moves that water out. Your inspection shows which parts your home needs.

Can downspout extensions fix a wet crawl space?

They help when roof runoff is part of the problem. If groundwater is also coming in, you may need interior drainage as well. We check both during the inspection.

Do I still need a dehumidifier if I have drainage?

Drainage removes standing water. A dehumidifier controls humidity in the air. Many crawl spaces need both, especially once they are sealed.

How much does drainage work cost?

Drainage cost depends on where water is coming from and how far it needs to be moved. The main factors are the length of the drainage route, excavation and access, whether a sump pump or discharge line is needed, and the surfaces that must be restored afterward. We provide a free inspection and a written estimate before any work begins.

Do you serve my area?

We serve homeowners across North Carolina, South Carolina, Tennessee, Virginia, Maryland, and Washington, DC. Contact us to confirm service availability in your area.

Crawl Space Brothers provides free, no-obligation inspections across North Carolina, South Carolina, Tennessee, Virginia, Maryland, and Washington, D.C. We’ll find where the water is coming from and provide a written plan before any work begins.

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