4 
311 Immediately after purchasing our home, Nelson and his team came out to remediate the mold in our basement that was identified during our home inspection. His team was prompt, professional, and clean. I spent the afternoon chatting with him about various things we wanted to do to our home, and...
Three days before a big graduation party at our home, it began to “rain” in our basement. Although we have a BG&E service contract, they were booked until the following week and could not come out. We contacted Alpha Plumbing and they were able to rearrange their scheduling to come out the...
Alpha PlumbingAfter 8 years of various water issues in my basement (including water in basement after rain) I interviewed 5 different companies about waterproofing the basement. There were many solutions offered but I felt the solution/price offered by this company made the most sense (after my own...
Basement Innovations WaterproofingWe cannot say how pleased we were with this company. We had some significant basement flooding issues with the rains this summer, so had multiple companies come out to give an estimate to fix the problem. Jaime gave us our estimate; not only was his price as good as any other of the...
All Aspects WaterproofingI rescheduled an apt for this Monday vs next Monday 08/24/15. We confirmed, so I left my job 3 hours early. Got close to my house only to receive a phone call that they were cancelling on me because a bigger job came up (an emergency basement leak). Mark said he would give me a call so we...
Mud Brothers CitrusI had dampness developing on my basement floor and thought I had a foundation problem. Adrian came within 24 hours and found that I actually had a water main leak, seeping into the wall. He called several plumbers and recommended one that could do the repairs (not all can). He did not...
Stop Leak Foundation Restoration Specialists IncEverything went fine. Only time will tell if the leak is fixed, but the workman assured me that the matter is resolved now.
Noonan ConstructionThey were punctual and went over the items needing repair. Ranging from sealing cracks in the basement floor and garage. They repaired rotted wood by replacing the wood and preparing the surfaces for repainting. They did some interior painting and replaced a hanging lamp and checked for...
After Nick's inspection, he insisted on making a minor repair at no charge. In addition, I discussed ongoing leaks in my basement, and he made several suggestions as to what should be done to eliminate the problem. I had a contractor act on his suggestions, and an ongoing problem of many...
Dewar General Contracting is a veteran owned contracting firm based in Baltimore. Our people make our company great and we all look forward to working with you! For the remainder of the 2023 every customer that we give a price to will receive a $50 gift card for adopting a pet at www.pittiesandpurrs.org Terms and Conditions: 1. Must be used in 2023 2. Redeemable after adoption 3. Confirmation emails accepted 4. Can be used in addition to the pet of the month contribution
"John and his guys did a fantastic job on the project I had for them. I will definitely hire them again for my next project here at the house!"
Marc C on June 2024
Dewar General Contracting is a veteran owned contracting firm based in Baltimore. Our people make our company great and we all look forward to working with you! For the remainder of the 2023 every customer that we give a price to will receive a $50 gift card for adopting a pet at www.pittiesandpurrs.org Terms and Conditions: 1. Must be used in 2023 2. Redeemable after adoption 3. Confirmation emails accepted 4. Can be used in addition to the pet of the month contribution
"John and his guys did a fantastic job on the project I had for them. I will definitely hire them again for my next project here at the house!"
Marc C on June 2024
Quality 1st Basement Systems is your local, family-owned contractor for Basement Waterproofing, Sump Pumps, Basement Finishing, Foundation Repair, Crack Repair, Egress Windows and Egress Stairwell, and Crawlspace Encapsulation too. 100% FINANCING AVAILABLE and free estimates. We have been in business for 25 years and have five star ratings with Google, Yelp, and the BBB. Winner of the 2021 BBB Torch Award for Market Place Ethics and finalist for the 2022 International BBB Torch award for Market Place Ethics. CONTACT US NOW BY CALLING 1-800-768-6745 OR EMAIL US AT [email protected]
"Service was great from sales, to installation, to post installation support. Very responsive, very professional. It's hard to find in this 'space'--there are a lot of shady people in basement water damage/repair, and this place exceeded expectations. We've had our repair in place for 4+ years, with only 1 small issue on a wall seam crack, and that was fixed within 24 hours of reporting the issue. Stand up place! Thank you for such great service and support."
John M on January 2024
Quality 1st Basement Systems is your local, family-owned contractor for Basement Waterproofing, Sump Pumps, Basement Finishing, Foundation Repair, Crack Repair, Egress Windows and Egress Stairwell, and Crawlspace Encapsulation too. 100% FINANCING AVAILABLE and free estimates. We have been in business for 25 years and have five star ratings with Google, Yelp, and the BBB. Winner of the 2021 BBB Torch Award for Market Place Ethics and finalist for the 2022 International BBB Torch award for Market Place Ethics. CONTACT US NOW BY CALLING 1-800-768-6745 OR EMAIL US AT [email protected]
"Service was great from sales, to installation, to post installation support. Very responsive, very professional. It's hard to find in this 'space'--there are a lot of shady people in basement water damage/repair, and this place exceeded expectations. We've had our repair in place for 4+ years, with only 1 small issue on a wall seam crack, and that was fixed within 24 hours of reporting the issue. Stand up place! Thank you for such great service and support."
John M on January 2024
Established in 1993, JES stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of Virginia and Maryland, we bring our local expertise closer to you. JES proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At JES, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate! 410516000653 (DC) | 50637 (MD) | WV027473 (WV)
"They were recommended to me. Was honest with estimate. Told me everything that was going happen. Performed work in timely fashion. Would definitely recommend again"
Thomas S on August 2025
Established in 1993, JES stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of Virginia and Maryland, we bring our local expertise closer to you. JES proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At JES, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate! 410516000653 (DC) | 50637 (MD) | WV027473 (WV)
"They were recommended to me. Was honest with estimate. Told me everything that was going happen. Performed work in timely fashion. Would definitely recommend again"
Thomas S on August 2025
Founded in 1987, Steve Taylor was passionate about providing homeowners with an honest approach to basement waterproofing and delivering exceptional customer service for every job. BWN swiftly built a reputable, trusted brand spanning across Maryland and Delaware. Today, as we look back over 35 years of business, our employee dedication and steadfast customer loyalty continue to fuel BWN’s success. This is best demonstrated by BWN’s abundant referral business and 55,000+ customers.
"Quick, efficient, super communication, great cleanup. Highly recommend."
Ellen H on October 2022
Founded in 1987, Steve Taylor was passionate about providing homeowners with an honest approach to basement waterproofing and delivering exceptional customer service for every job. BWN swiftly built a reputable, trusted brand spanning across Maryland and Delaware. Today, as we look back over 35 years of business, our employee dedication and steadfast customer loyalty continue to fuel BWN’s success. This is best demonstrated by BWN’s abundant referral business and 55,000+ customers.
"Quick, efficient, super communication, great cleanup. Highly recommend."
Ellen H on October 2022
Guardian Basement Waterproofing understands your basement waterproofing needs. We know how to detect the source of water intrusion and stop leaks before they happen. We help our customers reclaim their basements from water, mold and mildew by doing what we do best: finding and repairing the source of their water-related problems. Guardian uses only skilled and experienced technicians to do the job right the first time! As a basement waterproofing company with more than 40 years of waterproofing experience, Guardian stands behind its work with a Lifetime Guarantee. Additional phone number - (410) 484-9812.
"Avoid Guardian Basement – False Promises and Poor Customer Service Two years ago, I hired Guardian Basement to fix a water issue on the front wall of my basement. Joel came out, sold me on their system, and guaranteed I would have a dry basement. We also replaced two sump pumps and had the sump well dug deeper. The main selling point was their lifetime guarantee. Fast forward two years, and I have the exact same problem. Every time there is significant rain, water rushes through the same wall. I reached out to Guardian Basement, and Joel scheduled a time to check it out. His tone was completely different this time—defensive and dismissive. Within five minutes, he claimed, “Your system is clogged.” He made this assessment without any real inspection—just by looking at the cement floor and wall. Now, here’s the catch: If you look closely at their so-called lifetime warranty, clogs are not covered. So despite spending thousands of dollars, I’m back to square one. To make matters worse, Joel was incredibly condescending and unpleasant to deal with. After this experience, I looked into their licensing with the state of Maryland and found multiple complaints against them. I am now in the process of submitting my own complaint as well. I would never recommend Guardian Basement to anyone. Save your money and go with a company that truly knows what they are doing and stands behind their work. If I could give them a negative number of stars I would."
Kelly M on March 2025
Guardian Basement Waterproofing understands your basement waterproofing needs. We know how to detect the source of water intrusion and stop leaks before they happen. We help our customers reclaim their basements from water, mold and mildew by doing what we do best: finding and repairing the source of their water-related problems. Guardian uses only skilled and experienced technicians to do the job right the first time! As a basement waterproofing company with more than 40 years of waterproofing experience, Guardian stands behind its work with a Lifetime Guarantee. Additional phone number - (410) 484-9812.
"Avoid Guardian Basement – False Promises and Poor Customer Service Two years ago, I hired Guardian Basement to fix a water issue on the front wall of my basement. Joel came out, sold me on their system, and guaranteed I would have a dry basement. We also replaced two sump pumps and had the sump well dug deeper. The main selling point was their lifetime guarantee. Fast forward two years, and I have the exact same problem. Every time there is significant rain, water rushes through the same wall. I reached out to Guardian Basement, and Joel scheduled a time to check it out. His tone was completely different this time—defensive and dismissive. Within five minutes, he claimed, “Your system is clogged.” He made this assessment without any real inspection—just by looking at the cement floor and wall. Now, here’s the catch: If you look closely at their so-called lifetime warranty, clogs are not covered. So despite spending thousands of dollars, I’m back to square one. To make matters worse, Joel was incredibly condescending and unpleasant to deal with. After this experience, I looked into their licensing with the state of Maryland and found multiple complaints against them. I am now in the process of submitting my own complaint as well. I would never recommend Guardian Basement to anyone. Save your money and go with a company that truly knows what they are doing and stands behind their work. If I could give them a negative number of stars I would."
Kelly M on March 2025
SWS Contracting and Management, LLC was established in 2010 and is a general contractor offering construction services in terms of Site Analysis, Feasibility Studies, Preliminary Design Studies, Permit/Zoning Applications, etc. We handle various industrial, distribution, manufacturing, office retail, recreational, healthcare, and commercial projects in DC, Maryland, West Virginia, and Virginia markets.
"Everything went well from the start of engagement all the way with closeout of the project. SWS was very patient with me and maintained a level of professionalism and ensured the project stayed on target. I’m forever grateful and will use them again."
Denise B on November 2024
SWS Contracting and Management, LLC was established in 2010 and is a general contractor offering construction services in terms of Site Analysis, Feasibility Studies, Preliminary Design Studies, Permit/Zoning Applications, etc. We handle various industrial, distribution, manufacturing, office retail, recreational, healthcare, and commercial projects in DC, Maryland, West Virginia, and Virginia markets.
"Everything went well from the start of engagement all the way with closeout of the project. SWS was very patient with me and maintained a level of professionalism and ensured the project stayed on target. I’m forever grateful and will use them again."
Denise B on November 2024
We are a licensed, fully insured and EPA certified company that is also accredited with the Better Business Bureau. Our goal is to meet or exceed our customers’ expectations in Quality, Service and Price.
"Five Star did a fantastic job with our basement remodel. Here are a few reasons that we’re happy that we chose Maurice and his team: 1. Outstanding worksmanship. Their attention-to-detail was excellent. 2. Clear, friendly communication. All questions were resolved quickly and kindly. 3. Professionalism. Maurice gave us a day-by-day schedule before construction started so that we knew what to expect every day. He estimated 16 days…. construction lasted exactly 16 days. You will be glad you chose Five Star for your project! Mike and Megan"
Michael E on November 2020
We are a licensed, fully insured and EPA certified company that is also accredited with the Better Business Bureau. Our goal is to meet or exceed our customers’ expectations in Quality, Service and Price.
"Five Star did a fantastic job with our basement remodel. Here are a few reasons that we’re happy that we chose Maurice and his team: 1. Outstanding worksmanship. Their attention-to-detail was excellent. 2. Clear, friendly communication. All questions were resolved quickly and kindly. 3. Professionalism. Maurice gave us a day-by-day schedule before construction started so that we knew what to expect every day. He estimated 16 days…. construction lasted exactly 16 days. You will be glad you chose Five Star for your project! Mike and Megan"
Michael E on November 2020
Residential and Light commercial, General Contractor. Dimitri’s Home Improvement is a family owned business serving Baltimore, Howard and Anne Arundel counties. We offer quality work and a professional attitude backed with over 40 years of home improvement experience. **If contacting us via the Angie's List Message Center, PLEASE include your name and phone number within the message to ensure the most efficient service** thank you! Additional Services-Remodeling - Modular & Mobile Home Remodeling - Sunrooms & Patio Enclosures Window Treatments
"Very well. Workers cleaned up area and worked neatly. Very satisfied with quality of work and would use again!"
Tod H on November 2023
Residential and Light commercial, General Contractor. Dimitri’s Home Improvement is a family owned business serving Baltimore, Howard and Anne Arundel counties. We offer quality work and a professional attitude backed with over 40 years of home improvement experience. **If contacting us via the Angie's List Message Center, PLEASE include your name and phone number within the message to ensure the most efficient service** thank you! Additional Services-Remodeling - Modular & Mobile Home Remodeling - Sunrooms & Patio Enclosures Window Treatments
"Very well. Workers cleaned up area and worked neatly. Very satisfied with quality of work and would use again!"
Tod H on November 2023
John James Properties focuses on four pillars: Real Estate Sales, Property Management, Construction and Inspections. John James Properties has specialized knowledge and a proven track record of providing commercial and residential consultation whether it's asset management, acquisition, assessment or construction development to help position our clients for success in a complex real estate environment.
"John did an outstanding job ordering and replacing our windows, making the whole process smooth and stress-free. He was highly attentive to details, ensuring the measurements were precise and the products chosen matched our needs perfectly. John communicated clearly throughout the project, keeping us informed at each stage. His professionalism and friendly approach made us feel confident we were in good hands. We highly recommend John for his exceptional service and dedication to delivering quality results."
Judine B on November 2024
John James Properties focuses on four pillars: Real Estate Sales, Property Management, Construction and Inspections. John James Properties has specialized knowledge and a proven track record of providing commercial and residential consultation whether it's asset management, acquisition, assessment or construction development to help position our clients for success in a complex real estate environment.
"John did an outstanding job ordering and replacing our windows, making the whole process smooth and stress-free. He was highly attentive to details, ensuring the measurements were precise and the products chosen matched our needs perfectly. John communicated clearly throughout the project, keeping us informed at each stage. His professionalism and friendly approach made us feel confident we were in good hands. We highly recommend John for his exceptional service and dedication to delivering quality results."
Judine B on November 2024
Over 12 years in business! All home improvement work, concrete, brick, decks, garage, bathrooms, kitchen, basements
"I’m very pleased with the repointing of the bricks on my front steps. CBJ did a very thorough job and the steps look great! Doug was really easy to work with and kept me well informed throughout the whole process. I definitely would recommend CBJ Home Improvement."
Kathleen O on September 2025
Over 12 years in business! All home improvement work, concrete, brick, decks, garage, bathrooms, kitchen, basements
"I’m very pleased with the repointing of the bricks on my front steps. CBJ did a very thorough job and the steps look great! Doug was really easy to work with and kept me well informed throughout the whole process. I definitely would recommend CBJ Home Improvement."
Kathleen O on September 2025
The cost to finish a basement is $18,400 for the average homeowner. However, this cost could be as little as $2,800 or as much as $34,500, depending on the basement size and the materials needed. If your basement is already outfitted with electrical and plumbing, expect the cost to fall on the lower end.
For example, the drywall cost for this project averages around $1,750, but other features, like hiring a plumber, cost between $45 and $200 per hour.
The cost to remodel a basement is between $12,100 and $33,400 for the average homeowner. The price you pay can be as little as $3,500 or as much as $50,200, depending on the size and condition of your basement and the type of remodel you're doing.
If you're doing a simple project like adding a home office to your basement, you can expect to pay anywhere from $500 to $3,000. However, if you're adding a bathroom, which is an extensive project, you can expect to pay between $6,600 to $16,500.
Damp proofing and waterproofing are both methods to help keep your basement dry. Damp proofing keeps soil moisture from entering your basement, which is helpful since your basement is underground. Waterproofing, however, keeps both soil moisture and liquid water out of the basement, which is essential, especially if you live in a wet environment. Because it’s more protective, waterproofing typically costs more than damp proofing.
Although homeowners often use the terms basement remodeling and basement finishing interchangeably, they are quite different terms.
Finishing a basement is the process of taking a basement space that is not habitable and adding elements to make it usable. This includes adding plumbing, flooring, and insulation.
Remodeling a basement means taking an already existing finished basement and changing it, often by adding or removing walls, adding plumbing, or changing the existing flooring.
The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in.
If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500 and $5,000 to waterproof, but that price rises significantly for a larger basement.
From average costs to expert advice, get all the answers you need to get your job done.
An unfinished basement has a lot of potential for a family room or guest suite. So how much does it cost to finish a basement? Read on for all cost factors.
A basement remodel can often cost as much as adding another room. However, homeowners should consider the usefulness and ROI of a remodel.
Sump pumps are a must for homeowners who live in flood zones. Find out how much sump pump installation costs based on type, location, and features.
Finishing your basement can be a time-intensive project. Our guide explores the best time to finish a basement and what time of year is best for this project.
Finishing a basement isn’t always ideal. Learn about the differences between a finished and unfinished basement and which is right for you.
A flooded basement can lead to lasting structural issues in your home. Discover what causes basement flooding and how to address the issue.