Basement Waterproofing FAQ for Baltimore, MD Homeowners
Homeowners in Baltimore, Maryland keep raising the same few questions: why old basements take on water, what a rising floor drain means, how to check a contractor and how this free referral service works. Short answers follow; your own house still needs a contractor's eyes.
Common Questions
Each answer names the public office or source behind it.
Is this site a basement waterproofing company?
No. Basement Waterproofing Baltimore MD is a referral and advertising service with no Maryland Home Improvement Commission (MHIC) license. It never does, prices or inspects basement work. Your form request goes to one independent local contractor, which reaches out to you. Asking costs nothing, and no one gets a gift, discount or cash for it.
Why do so many Baltimore basements take on water?
Mostly age. Census survey data dates about 4 in 10 City homes to 1939 or earlier, and Baltimore Magazine counts about half of its occupied homes as attached single-family houses, mostly brick rows. Older stone and brick foundation walls let water through more readily, slow-draining clay soils can hold water against them, and narrow rowhouse lots often leave no room to dig outside.
Water rose through my floor drain. Is that seepage?
Probably not; it usually means a sewer backup. The City separated its combined sewers under a consent decree, yet sanitary lines can still surcharge in wet weather. In the City, report it to 311, or (443) 263-2220 from outside the City; the lateral and its cleanout up to the property line are yours to look after. In Baltimore County, contact DPWT's Emergency Sewer Service at 410-887-7415.
Does Baltimore City help with cleanup after a backup?
Sometimes. After a capacity-related backup in wet weather (rain of a quarter inch or more within 24 hours), DPW's Expedited Reimbursement Program can repay documented cleanup, disinfection and disposal costs, up to $5,000 per dwelling unit per event, if you apply within 90 days. Its SOS Cleanup pilot sends City-contracted cleaners instead (one or the other; ask 311 whether SOS is running). Both serve City addresses only, with no tie to this site.
What does basement waterproofing usually cost?
Fixr's 2026 national figures place a typical project at about $3,000 to $10,000 and averaging near $5,000. Its row for an interior perimeter drain is $40 to $120 per linear foot; a sump pump installed runs $600 to $2,500; epoxy injection is $250 to $1,000 for each crack. Those are national ranges; your own number comes from a contractor's written estimate.
How can I check out a contractor?
Ask for its MHIC number, then look it up yourself at labor.maryland.gov/license/mhic or by dialing 410-230-6231 or 1-888-218-5925. Using a contractor MHIC has licensed may let you claim actual losses, up to $30,000, from the state's Home Improvement Guaranty Fund; eligibility limits apply, and unlicensed work is not covered. For complaint history, try the Attorney General's Consumer Protection Division at (410) 576-6557.
What should the contract and payments look like?
Maryland law calls for a legible written contract that you and the contractor both sign, listing the contractor's name, address, contact number and MHIC number along with a notice about Commission licensing. Nobody may take money before signing, and the deposit can't top one-third of the price. Get drain length, pump details, discharge point and warranty terms in writing.
Can I change my mind after agreeing to a job at home?
Generally, yes. If you agree to a sale of $25 or more away from the seller's place of business, your house included, Maryland's Door-to-Door Sales Act gives you until midnight of the third business day to cancel, even if you asked for the visit. The seller owes you a written notice and a cancellation form; if they are missing, you may cancel by any means.
Who handles permits and plumbing?
Foundation, excavation and structural work in the City and the County generally needs a building permit carrying the contractor's MHIC number, from DHCD (443-984-1809) or PAI (410-887-3900). Hooking a sump to a drain or sewer, backwater valves, ejectors and laterals all count as plumbing, done by a Maryland-licensed plumber under a plumbing permit. In Baltimore City, groundwater and subsurface drainage may not go into the sanitary sewer.
Will my homeowners policy pay for basement water?
That turns on the wording. Protection against sewage backing up is often an add-on endorsement bought separately, and water that seeps in over time is a frequent exclusion. Check the policy text, and take questions to your insurer or agent. This site has no part in insurance.
Get an Answer for Your Basement
Some questions need someone at your basement wall. Send the short form, and one independent local contractor will be in touch; what happens next is your decision.