*The Angi rating for Basement Waterproofing companies in Littlerock, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.
*The HomeAdvisor rating for Basement Waterproofing companies in Littlerock, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.
Last update on April 11, 2025
Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"Great; competitive price, installation went great, friendly and responsive staff in person and office"
Andrew M on February 2020
Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"Great; competitive price, installation went great, friendly and responsive staff in person and office"
Andrew M on February 2020
Wu Construction Inc, specializes in drainage and foundation systems construction and repair. Since our founding in 1983, we have successfully completed thousands of projects for homeowners and businesses throughout the Northwest. We are the best in our industry, and well regarded by our customers for our excellent service. We are lauded for our speedy responses to inquiries, our efficiency and the quality of our work.
"prompt, hard working team, thorough job including after job clean up. after the payment was made, reached out to Wu Construction for a favor - to take some pictures of the crawl space after the project. No problem, they sent a foreman to do just that. It has been a great pleasure working with them."
undefined on August 2024
Wu Construction Inc, specializes in drainage and foundation systems construction and repair. Since our founding in 1983, we have successfully completed thousands of projects for homeowners and businesses throughout the Northwest. We are the best in our industry, and well regarded by our customers for our excellent service. We are lauded for our speedy responses to inquiries, our efficiency and the quality of our work.
"prompt, hard working team, thorough job including after job clean up. after the payment was made, reached out to Wu Construction for a favor - to take some pictures of the crawl space after the project. No problem, they sent a foreman to do just that. It has been a great pleasure working with them."
undefined on August 2024
Groundworks, formerly, Matvey Foundation Repair is the leading structural and concrete repair firm in Western Washington. We specialize in repairing residential and commercial foundations, concrete slabs, bowing/cracked basement walls, sinking floors, concrete porches, settling/cracked foundations, and other structural issues. We raise and level concrete pavements, driveways, and sidewalks. We also offer basement waterproofing. Our expert design technicians provide professional services for commercial, residential, industrial, government, and municipal applications with award-winning products and superior customer service. CALL US TODAY FOR A FREE ESTIMATE!
"Groundworks were contracted to encapsulate the crawl space, with a dehumidifier, intellijacks & sump pump. The inspector showed us pictures & videos of what the work would look like on completion, & explained how each solution would be installed. They tried to charge me more for vent covers until I showed them the contract covering this part. The foreman told me there was a reset button for the sump pump to be installed on an exterior wall, but they did not install it, instead said they would put in a service order. I haven’t heard anything about this issue yet. When they installed the moister barrier, they excluded the cement pads I was told it cost extra to have them covered. When I signed the contract, I was never told there would be extra charges for vent covers or cement pads to be covered. The contract I signed covered a complete encapsulation, but this is not what I got. This is a bait & switch. I would not recommend Groundworks."
Fran F on March 2025
Groundworks, formerly, Matvey Foundation Repair is the leading structural and concrete repair firm in Western Washington. We specialize in repairing residential and commercial foundations, concrete slabs, bowing/cracked basement walls, sinking floors, concrete porches, settling/cracked foundations, and other structural issues. We raise and level concrete pavements, driveways, and sidewalks. We also offer basement waterproofing. Our expert design technicians provide professional services for commercial, residential, industrial, government, and municipal applications with award-winning products and superior customer service. CALL US TODAY FOR A FREE ESTIMATE!
"Groundworks were contracted to encapsulate the crawl space, with a dehumidifier, intellijacks & sump pump. The inspector showed us pictures & videos of what the work would look like on completion, & explained how each solution would be installed. They tried to charge me more for vent covers until I showed them the contract covering this part. The foreman told me there was a reset button for the sump pump to be installed on an exterior wall, but they did not install it, instead said they would put in a service order. I haven’t heard anything about this issue yet. When they installed the moister barrier, they excluded the cement pads I was told it cost extra to have them covered. When I signed the contract, I was never told there would be extra charges for vent covers or cement pads to be covered. The contract I signed covered a complete encapsulation, but this is not what I got. This is a bait & switch. I would not recommend Groundworks."
Fran F on March 2025
We are not a big company that you have to go through all the phone calls. Owner Andy Zhang will be the one to answer the phone, provide you the bid, and supervise and inspect the work before finish. We are so confident in our work, quality, and over all experience that we don't need any money down. Our customers don't pay us anything until the work is done and customer is happy! For a house on the market, in most cases, we allow owner pay the full bill through escrow at closing. We pride ourselves in treating every customer with honestly.We looking forward to hear and serve you soon!
"All done well. On time and budget. Hard working crew that was very professional."
patrick b on January 2025
We are not a big company that you have to go through all the phone calls. Owner Andy Zhang will be the one to answer the phone, provide you the bid, and supervise and inspect the work before finish. We are so confident in our work, quality, and over all experience that we don't need any money down. Our customers don't pay us anything until the work is done and customer is happy! For a house on the market, in most cases, we allow owner pay the full bill through escrow at closing. We pride ourselves in treating every customer with honestly.We looking forward to hear and serve you soon!
"All done well. On time and budget. Hard working crew that was very professional."
patrick b on January 2025
Protect the investment you’ve made with the knowledgeable team at MTU Services LLC. We are your local basement and foundation experts serving all of Washington state and North Idaho. We offer customized basement waterproofing, foundation repair, concrete crack repair, and basement sump pump solutions and egress windows for your home. Contact MTU Services LLC today to learn more about how we can help you protect your home. Give us a call to request a quote or to schedule service. Services include: leaking basement or crawl space repairs, foundation cracks repaired, lifting piers and levelling for your home or building, sup um systems and more.
"We have used MTU Services LLC twice in the last 3 years. Two projects involving extreme foundation repair for our home in Spokane, WA. Mark and his crew are OUTSTANDING in every way! MTU has old fashion values, no price gouging, detailed bids and the crew is excellent in communication with the home owner while on site each day. Our major repairs took months because the original builder in the 1950's did not put in appropriate footers and a portion of our house began to sink. MTU also completely gutted a basement room that was compromised, jack hammered the concrete out, installed new metal ceiling beams, posts, dug new footers, metal mesh on the floor, poured and leveled the brand new floor. The hardest working real men I have seen in decades and no complaining what soever. Mark is great in keeping in touch with home owner on any questions, concerns, and is excellent on educating the homeowner along the way. One of the best companies I have ever had the pleasure to work with!"
Theresa M on January 2025
Protect the investment you’ve made with the knowledgeable team at MTU Services LLC. We are your local basement and foundation experts serving all of Washington state and North Idaho. We offer customized basement waterproofing, foundation repair, concrete crack repair, and basement sump pump solutions and egress windows for your home. Contact MTU Services LLC today to learn more about how we can help you protect your home. Give us a call to request a quote or to schedule service. Services include: leaking basement or crawl space repairs, foundation cracks repaired, lifting piers and levelling for your home or building, sup um systems and more.
"We have used MTU Services LLC twice in the last 3 years. Two projects involving extreme foundation repair for our home in Spokane, WA. Mark and his crew are OUTSTANDING in every way! MTU has old fashion values, no price gouging, detailed bids and the crew is excellent in communication with the home owner while on site each day. Our major repairs took months because the original builder in the 1950's did not put in appropriate footers and a portion of our house began to sink. MTU also completely gutted a basement room that was compromised, jack hammered the concrete out, installed new metal ceiling beams, posts, dug new footers, metal mesh on the floor, poured and leveled the brand new floor. The hardest working real men I have seen in decades and no complaining what soever. Mark is great in keeping in touch with home owner on any questions, concerns, and is excellent on educating the homeowner along the way. One of the best companies I have ever had the pleasure to work with!"
Theresa M on January 2025
Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"I hired TerraFirma Foundation Systems to level my home, expecting a professional job with clear communication, but the entire experience has been incredibly disappointing and costly. From the start, I hired the company to level the floors in my home, specifically to address a nearly 3-inch dip in my kitchen area, a 13x10 room. Yet after they â completed the job, I still have a 1.5-inch dip in the center of the kitchen, and a corner of my home/kitchen that sits half an inch higher than it should be (above 0%), creating a full inch rise from the living room to the kitchen. Now they are saying that leveling the kitchen was not included in the original scope, blaming the remaining dip on my kitchen island and fridge being â too heavy and lacking proper support an issue they failed to identify in the initial assessment. To properly address this problem, they are now asking for an additional $7,500, claiming this work was never part of the original job. This feels like a classic bait-and-switch tactic, and I cant help but feel taken advantage of. To make matters worse, I discovered that they used an uncalibrated machine during the initial leveling when installing, which raised my house over an inch more than necessary, causing significant damage that was not there before. Partway through the lift, they even asked me to sign a waiver to get my house closer to 0% level, effectively absolving them of any damage caused. The technician stopped mid-lift to show me the damage that was already occurring and warned that more would likely follow if we continued. I agreed to proceed, trusting their assurances and assuming their equipment was properly calibrated. I even pointed out to the technician at the time that it did not look level, and he assured me the machine was correct. Now, they refuse to take any responsibility for the resulting damage, dismissing it as standard and providing terms within the contract absolving them despite them overcorrecting the home. There were also repeated measurement discrepancies, with reports showing one reading and verbal statements/emails suggesting different levels. When I sought clarification, I received vague responses and empty apologies. After all this, and nearly $30,000 invested, my floor remains unleveled. The only resolution TerraFirma Foundation Systems has offered is for me to pay additional money to level the kitchen and to wait for the overcorrected area to â settle naturally a process that, according to their technician, could take anywhere from two months to ten years. I hired TerraFirma Foundation Systems to fully level my home, not to leave me with an incomplete job, inconsistent results, and vague promises. If you are considering foundation work, I strongly recommend looking elsewhere this company has left me with extensive damage, unexpected costs, and a significant amount of frustration."
Charles G on November 2024
Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"I hired TerraFirma Foundation Systems to level my home, expecting a professional job with clear communication, but the entire experience has been incredibly disappointing and costly. From the start, I hired the company to level the floors in my home, specifically to address a nearly 3-inch dip in my kitchen area, a 13x10 room. Yet after they â completed the job, I still have a 1.5-inch dip in the center of the kitchen, and a corner of my home/kitchen that sits half an inch higher than it should be (above 0%), creating a full inch rise from the living room to the kitchen. Now they are saying that leveling the kitchen was not included in the original scope, blaming the remaining dip on my kitchen island and fridge being â too heavy and lacking proper support an issue they failed to identify in the initial assessment. To properly address this problem, they are now asking for an additional $7,500, claiming this work was never part of the original job. This feels like a classic bait-and-switch tactic, and I cant help but feel taken advantage of. To make matters worse, I discovered that they used an uncalibrated machine during the initial leveling when installing, which raised my house over an inch more than necessary, causing significant damage that was not there before. Partway through the lift, they even asked me to sign a waiver to get my house closer to 0% level, effectively absolving them of any damage caused. The technician stopped mid-lift to show me the damage that was already occurring and warned that more would likely follow if we continued. I agreed to proceed, trusting their assurances and assuming their equipment was properly calibrated. I even pointed out to the technician at the time that it did not look level, and he assured me the machine was correct. Now, they refuse to take any responsibility for the resulting damage, dismissing it as standard and providing terms within the contract absolving them despite them overcorrecting the home. There were also repeated measurement discrepancies, with reports showing one reading and verbal statements/emails suggesting different levels. When I sought clarification, I received vague responses and empty apologies. After all this, and nearly $30,000 invested, my floor remains unleveled. The only resolution TerraFirma Foundation Systems has offered is for me to pay additional money to level the kitchen and to wait for the overcorrected area to â settle naturally a process that, according to their technician, could take anywhere from two months to ten years. I hired TerraFirma Foundation Systems to fully level my home, not to leave me with an incomplete job, inconsistent results, and vague promises. If you are considering foundation work, I strongly recommend looking elsewhere this company has left me with extensive damage, unexpected costs, and a significant amount of frustration."
Charles G on November 2024
Thank you for visiting OLYMPIA WA SERVICES LLC. We are your locally owned and operated general contracting specialists based in Olympia, WA. We service residential and commercial clients throughout Thurston County and the surrounding areas. Contact us now for your free estimate--we look forward to working with you soon!
Thank you for visiting OLYMPIA WA SERVICES LLC. We are your locally owned and operated general contracting specialists based in Olympia, WA. We service residential and commercial clients throughout Thurston County and the surrounding areas. Contact us now for your free estimate--we look forward to working with you soon!
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"Very professional and efficient. We had a great experience!"
Samantha S on March 2024
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"Very professional and efficient. We had a great experience!"
Samantha S on March 2024
We are a local family-owned business that opened its doors in 2004 with our main goal of providing the best customer experience that we can to every single customer from the smallest to the biggest projects and maintain a long term relationship. We are ONE-STOP-SHOP for ALL Energy Efficiency needs. We are located in Renton, WA and gladly serving over 25 cities in the Washington Puget sound area. Our affordable, licensed, insured, and trained workers are here to help make your home safe, energy-efficient and comfortable. We can do: Energy efficiency upgrades and planning, Attic & Crawl space clean up and decontamination, Attic & Crawl space insulation installation. Vapor & Radiant barriers installation. Air Ducts & Dryer vent cleaning & replacement. HVAC, Ventilation installation and repair. Solar fans. HVAC Lighting installation, Generators, Surge protectors.
We are a local family-owned business that opened its doors in 2004 with our main goal of providing the best customer experience that we can to every single customer from the smallest to the biggest projects and maintain a long term relationship. We are ONE-STOP-SHOP for ALL Energy Efficiency needs. We are located in Renton, WA and gladly serving over 25 cities in the Washington Puget sound area. Our affordable, licensed, insured, and trained workers are here to help make your home safe, energy-efficient and comfortable. We can do: Energy efficiency upgrades and planning, Attic & Crawl space clean up and decontamination, Attic & Crawl space insulation installation. Vapor & Radiant barriers installation. Air Ducts & Dryer vent cleaning & replacement. HVAC, Ventilation installation and repair. Solar fans. HVAC Lighting installation, Generators, Surge protectors.
We specialize in Land clearing excavation logging dirt work septic repairs construction and more!
We specialize in Land clearing excavation logging dirt work septic repairs construction and more!
Due to the nature of basements, some level of waterproofing is necessary to prevent water from seeping in and causing damage. Some definitive signs that your basement needs waterproofing measures or needs existing waterproofing measures need to be updated include:
Water in your basement, including damp walls or puddles on the floor
Mold spots in your basement
Musty smells or odors
Warped doors or walls
Cracks in walls
Insect issues, such as cockroaches and termites
You can DIY basement waterproofing in some ways to help save on the overall costs. If your basement isn’t experiencing a lot of water but is noticeably humid, you can try running a dehumidifier that will pull the excess water out of the air. If you notice water leaking due to outdoor drainage issues, you can add downspout extensions to keep rainwater away from your home.
However, if the problem is more severe and requires a more extensive solution, it’s best to call a basement waterproofing professional to assess the treatment you need and install waterproofing safeguards properly. Since keeping water out of your basement is important, ensuring this job is done correctly the first time is best.
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.
Several factors dictate if you should waterproof the interior or exterior of your basement. Waterproofing the exterior of your home is a great option if you use your basement for storage, as it provides the most protection from water and water damage. If you prefer work done outside of your home versus inside, exterior waterproofing is best for you. However, interior waterproofing is often less expensive since the area is easier to reach and requires less labor.
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.