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Find Foundation, basement or crawlspace waterproofing / encapsulation pros in Renton

Avatar for Lakeside Construction & Paving LLC

Lakeside Construction & Paving LLC

5.00(
5
)
Approved Pro

Lakeside Construction & Paving LLC

5.00(
5
)
Approved Pro
1 years of experience
Free onsite estimate

AFFORDABLE PRICING We offer a variety of home improvement services at a competitive price, assured best value for your money. CUSTOMER SATISFACTION We believe in customer satisfaction as the utmost priority on the services we offer to our clients. QUALITY EQUIPMENTS Our high quality equipment will be able to provide our customers with a superior quality services. Proudly serviced 20Years in local area ABOUT US A step ahead in Paving & Masonry Services Lakeside Construction & Paving LLC is one of the top rated and highly efficient paving and masonry contractor based in Seattle. We specialize in all aspects of paving, foundations, basement waterproofing, roofing and masonry repair and rebuild jobs. Our Team provides exceptional service with quality work. With over 20 years of experience, we at Lakeside Construction & Paving LLC are experts you can trust for your next project. Our team consists of highly qualified and skilled craftsmen with loads of experience in the field. We offer free home visit consultations and quotations. Always encouraging customer feedback, as we continually strive to satisfy your needs. You can count on Lakeside Construction & Paving LLC to restore, construct, or maintain the beauty of your driveway, patio, steps, chimney, home exterior, retaining walls, basements, foundations and stone paving. We can do that and much more, our highly qualified staff is always ready to take on those projects that make your home beautiful. We have the equipment, knowledge, and desire to assist you on your home improvement or any kind of paving or masonry work.

"They did an excellent job on the foundation repair which is solid and dry they also done the paving work which was necessary it came out really smooth and a really nice finish I would highly recommend this company!"

Michael I on January 2026

AFFORDABLE PRICING We offer a variety of home improvement services at a competitive price, assured best value for your money. CUSTOMER SATISFACTION We believe in customer satisfaction as the utmost priority on the services we offer to our clients. QUALITY EQUIPMENTS Our high quality equipment will be able to provide our customers with a superior quality services. Proudly serviced 20Years in local area ABOUT US A step ahead in Paving & Masonry Services Lakeside Construction & Paving LLC is one of the top rated and highly efficient paving and masonry contractor based in Seattle. We specialize in all aspects of paving, foundations, basement waterproofing, roofing and masonry repair and rebuild jobs. Our Team provides exceptional service with quality work. With over 20 years of experience, we at Lakeside Construction & Paving LLC are experts you can trust for your next project. Our team consists of highly qualified and skilled craftsmen with loads of experience in the field. We offer free home visit consultations and quotations. Always encouraging customer feedback, as we continually strive to satisfy your needs. You can count on Lakeside Construction & Paving LLC to restore, construct, or maintain the beauty of your driveway, patio, steps, chimney, home exterior, retaining walls, basements, foundations and stone paving. We can do that and much more, our highly qualified staff is always ready to take on those projects that make your home beautiful. We have the equipment, knowledge, and desire to assist you on your home improvement or any kind of paving or masonry work.

"They did an excellent job on the foundation repair which is solid and dry they also done the paving work which was necessary it came out really smooth and a really nice finish I would highly recommend this company!"

Michael I on January 2026


Avatar for Insulation Co., LLC - Removal & Clean Outs

Insulation Co., LLC - Removal & Clean Outs

4.96(
184
)
Approved Pro

Insulation Co., LLC - Removal & Clean Outs

4.96(
184
)
Approved Pro
Customers say: True professional
17 years of experience
Free onsite estimate

Insulation Co. LLC has been Western Washington’s trusted attic and crawl space specialist since 2008. Based in Seattle, we provide far more than insulation—we offer complete attic and crawl space restoration. Our services include insulation removal and replacement, full cleanouts, mold remediation, duct insulation and sealing, rodent exclusion and proofing, vapor barrier installation, crawl space door upgrades, and comprehensive air sealing. For moisture issues, we also install sump pumps and French drains. We even offer specialized crawl space services for manufactured homes. Whatever your home needs beneath or above, our team ensures a clean, healthy, energy-efficient space built to last.

"I had a a very good experience with this company they were professional from the start , price was wright they did what they said and they finished in no time, very happy customer "

Jose D on February 2026

Insulation Co. LLC has been Western Washington’s trusted attic and crawl space specialist since 2008. Based in Seattle, we provide far more than insulation—we offer complete attic and crawl space restoration. Our services include insulation removal and replacement, full cleanouts, mold remediation, duct insulation and sealing, rodent exclusion and proofing, vapor barrier installation, crawl space door upgrades, and comprehensive air sealing. For moisture issues, we also install sump pumps and French drains. We even offer specialized crawl space services for manufactured homes. Whatever your home needs beneath or above, our team ensures a clean, healthy, energy-efficient space built to last.

"I had a a very good experience with this company they were professional from the start , price was wright they did what they said and they finished in no time, very happy customer "

Jose D on February 2026


Avatar for P4 Construction, LLC

P4 Construction, LLC

5.00(
2
)
Approved Pro

P4 Construction, LLC

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 years of experience

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer drainage services our job is to control and direct water away from your home or building.We have 13 years in the drainage field and specialize in,waterproofing foundation walls,basement drainage,yard drains,french drains,crawlspace interior drain systems,sump pump installations and replacement,new pvc downspout drain pipe installations,clean and or repair downspout pipes.You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with,we work with the best materials out there.We take pride on what we do.Our hard work speaks for itself.We look forward on helping you with your drainage projects.

"We hired them to install a 40 foot french drain. Eric was very knowledgeable and professional, not to mention a very nice person and good listener. He was punctual and he and his crew were extemely hard workers. The job functions as promised, looks great and they were very conscientious about how they left the work area neat and clean. I wish I could hire them for other projects."

Bill G on June 2024

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer drainage services our job is to control and direct water away from your home or building.We have 13 years in the drainage field and specialize in,waterproofing foundation walls,basement drainage,yard drains,french drains,crawlspace interior drain systems,sump pump installations and replacement,new pvc downspout drain pipe installations,clean and or repair downspout pipes.You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with,we work with the best materials out there.We take pride on what we do.Our hard work speaks for itself.We look forward on helping you with your drainage projects.

"We hired them to install a 40 foot french drain. Eric was very knowledgeable and professional, not to mention a very nice person and good listener. He was punctual and he and his crew were extemely hard workers. The job functions as promised, looks great and they were very conscientious about how they left the work area neat and clean. I wish I could hire them for other projects."

Bill G on June 2024


Avatar for Groundworks

Groundworks

4.63(
87
)
Approved Pro

Groundworks

4.63(
87
)
Approved Pro
Customers say: True professional
66 local quotes requested
31 years of experience

Groundworks is the North America’s leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we’re there with one mission – to repair, protect and improve their home.

"Let me start off by saying Im super impressed with the install crew Malik, Andy, and Brian. This crew is very professional, personable, and works REALLY hard! Please be sure to convey this to whoever is in their up-line as they each deserve kudos for being great employees and representatives of Groundworks. I was also VERY pleased with our estimator Zaire, he spent a lot of time planning and adjusting to our needs/wants for this project. Very communicative. I highly recommend Groundwork?s! "

Brian G on February 2026

Groundworks is the North America’s leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we’re there with one mission – to repair, protect and improve their home.

"Let me start off by saying Im super impressed with the install crew Malik, Andy, and Brian. This crew is very professional, personable, and works REALLY hard! Please be sure to convey this to whoever is in their up-line as they each deserve kudos for being great employees and representatives of Groundworks. I was also VERY pleased with our estimator Zaire, he spent a lot of time planning and adjusting to our needs/wants for this project. Very communicative. I highly recommend Groundwork?s! "

Brian G on February 2026


Avatar for Groundworks

Groundworks

5.00(
1
)
Approved Pro

Groundworks

5.00(
1
)
Approved Pro
92 local quotes requested
26 years of experience

Groundworks is the North America’s leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we’re there with one mission – to repair, protect and improve their home.

"Gauge is a Representative who puts his Clients first. He reminds me, of a younger me. (This says a lot, because I was always a top notch Sales Rep and I retired early, as a result of my personal efforts and how I always did, as I said, and placed my Clients as top priority). I have yet to begin my project, but he won over my business and I?m excited to see the results. I?m confident they will exceed my expectations."

Martin "Rocky" B on January 2026

Groundworks is the North America’s leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we’re there with one mission – to repair, protect and improve their home.

"Gauge is a Representative who puts his Clients first. He reminds me, of a younger me. (This says a lot, because I was always a top notch Sales Rep and I retired early, as a result of my personal efforts and how I always did, as I said, and placed my Clients as top priority). I have yet to begin my project, but he won over my business and I?m excited to see the results. I?m confident they will exceed my expectations."

Martin "Rocky" B on January 2026


Avatar for John's Waterproofing Co.

John's Waterproofing Co.

4.86(
51
)
Approved Pro

John's Waterproofing Co.

4.86(
51
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
63 local quotes requested

John's Waterproofing Co. is the premier waterproofing company serving in Oregon and Washington for over 50 years. We Specialize in Basement and Crawlspace Waterproofing and Repairs, we offer free inspections and estimates along with caring customer service. Contact our office today for your waterproofing needs!

"John’s was quick to respond and were able to get us on the schedule quickly. They communicated effectively and did quality work. I will work with John’s again."

Matt H on October 2022

John's Waterproofing Co. is the premier waterproofing company serving in Oregon and Washington for over 50 years. We Specialize in Basement and Crawlspace Waterproofing and Repairs, we offer free inspections and estimates along with caring customer service. Contact our office today for your waterproofing needs!

"John’s was quick to respond and were able to get us on the schedule quickly. They communicated effectively and did quality work. I will work with John’s again."

Matt H on October 2022


Avatar for BUILDING PERFORMANCE PROS LLC

BUILDING PERFORMANCE PROS LLC

3.00(
2
)
Approved Pro

BUILDING PERFORMANCE PROS LLC

3.00(
2
)
Approved Pro
10 local quotes requested
1 years of experience

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!

"No terrible "

Clark G on February 2026

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!

"No terrible "

Clark G on February 2026


Avatar for TerraFirma Foundation Systems

TerraFirma Foundation Systems

4.51(
67
)
Approved Pro

TerraFirma Foundation Systems

4.51(
67
)
Approved Pro
Customers say: Quick response
61 local quotes requested
21 years of experience

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.

"Had a sump pump installed. Haven’t had a repeat of the problem."

Edward H on December 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.

"Had a sump pump installed. Haven’t had a repeat of the problem."

Edward H on December 2025


Avatar for Diversified Crawlspace Servs

Diversified Crawlspace Servs

4.67(
15
)
Approved Pro

Diversified Crawlspace Servs

4.67(
15
)
Approved Pro
Customers say: Quality work
34 years of experience
Free onsite estimate

We are a full-service crawlspace, basement, and foundation repair company specializing in moisture control, structural stabilization, and long-term solutions for problem homes. Our services include crawlspace cleanouts, drainage systems, sump pumps, vapor barriers, encapsulation, and basement waterproofing. We also perform foundation repairs such as push piers, pin piles, helical piers, footing repairs, beam replacements, and house lifting to correct settling and structural movement. One of our signature services is Rat Slab®, a concrete crawlspace encapsulation system designed to permanently seal the ground, control moisture, prevent rodent intrusion, and create a clean, durable crawlspace where traditional liners fail. We focus on honest evaluations, practical solutions, and quality workmanship to protect your home and provide long-lasting results you can trust.

"?? SCAM ALERT ? BEWARE OF THIS COMPANY ?? All these 5.0 reviews are fake Do not hire this company. They took my money and then disappeared. They have no integrity and will lie and scam to get paid upfront. Before you even consider contacting them, review the complaints filed against them in Washington courts ? there are multiple cases. My experience was horrible. They were paid 50% of the contract upfront, yet never started the work. Do your due diligence ? this company cannot be trusted."

Allen J on December 2025

We are a full-service crawlspace, basement, and foundation repair company specializing in moisture control, structural stabilization, and long-term solutions for problem homes. Our services include crawlspace cleanouts, drainage systems, sump pumps, vapor barriers, encapsulation, and basement waterproofing. We also perform foundation repairs such as push piers, pin piles, helical piers, footing repairs, beam replacements, and house lifting to correct settling and structural movement. One of our signature services is Rat Slab®, a concrete crawlspace encapsulation system designed to permanently seal the ground, control moisture, prevent rodent intrusion, and create a clean, durable crawlspace where traditional liners fail. We focus on honest evaluations, practical solutions, and quality workmanship to protect your home and provide long-lasting results you can trust.

"?? SCAM ALERT ? BEWARE OF THIS COMPANY ?? All these 5.0 reviews are fake Do not hire this company. They took my money and then disappeared. They have no integrity and will lie and scam to get paid upfront. Before you even consider contacting them, review the complaints filed against them in Washington courts ? there are multiple cases. My experience was horrible. They were paid 50% of the contract upfront, yet never started the work. Do your due diligence ? this company cannot be trusted."

Allen J on December 2025


Avatar for Rain Pros Inc

Rain Pros Inc

4.76(
413
)
Approved Pro

Rain Pros Inc

4.76(
413
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
20 years of experience

Rain Pros is Puget Sounds premier full-service drainage company, with a reputation of unmatched customer service and exceptional quality. Our professionals have years of experience in drainage installation, repair and maintenance. We are very proud to be growing company and leader in each of our fields. For bid requests regarding the installation of a new drainage system please email our general manager (Joel@RainPros.com). For drainage repair and inspection requests please contact our service coordinator at (253) 678-7111, additionally you can email- customerservice@rainpros.com to immediately cue for with our service department.

"The work was done quickly and efficiently. Communication was very easy, clear, pleasant. The work was very good and I highly recommend them. The clean up wasn't thorough so they sent someone out immediately to finish the job."

Joan G on September 2025

Rain Pros is Puget Sounds premier full-service drainage company, with a reputation of unmatched customer service and exceptional quality. Our professionals have years of experience in drainage installation, repair and maintenance. We are very proud to be growing company and leader in each of our fields. For bid requests regarding the installation of a new drainage system please email our general manager (Joel@RainPros.com). For drainage repair and inspection requests please contact our service coordinator at (253) 678-7111, additionally you can email- customerservice@rainpros.com to immediately cue for with our service department.

"The work was done quickly and efficiently. Communication was very easy, clear, pleasant. The work was very good and I highly recommend them. The clean up wasn't thorough so they sent someone out immediately to finish the job."

Joan G on September 2025

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FAQs for foundation, basement or crawlspace waterproofing / encapsulation projects in Renton, WA

The most affordable way to waterproof your basement is with interior methods like waterproof paint, costing between $1 and $8 per square foot, or silicate concrete sealers priced at $4 to $6 per square foot. However, these solutions are only suitable for certain issues. If your basement moisture is due to more serious problems like a cracked foundation, you'll need more extensive (and costly) repairs.

Absolutely! Waterproofing your basement is a smart investment that can increase your home's value. By keeping your basement dry and free of moisture problems, you protect your home's structural integrity and make it more appealing to potential buyers. Plus, taking proactive measures now can prevent costly water damage repairs down the line.

The time required to waterproof a basement depends on the selected method. Some approaches to interior waterproofing, like paint or sealant, can be completed within a day. Installing new drains or weeping tiles will need at least two to three days of labor. Any forms of exterior waterproofing that require you to excavate land will require an additional three days of work to prepare the ground.

Yes, basement waterproofing can significantly increase your home's value. A dry, leak-free basement is a strong selling point for potential buyers, enhancing your property's desirability and market price. Investing in professional waterproofing not only protects your home's structural integrity but also ensures a healthier living environment by preventing mold and mildew growth.

Waterproofing both the interior and exterior of your basement offers the best protection against moisture. Exterior waterproofing stops water from penetrating your foundation, while interior methods manage any moisture that does enter. If you must choose one, exterior waterproofing is generally more effective, as it prevents water from reaching your home's interior in the first place.

The Renton, WA homeowners’ guide to foundation, basement or crawlspace waterproofing / encapsulations

From average costs to expert advice, get all the answers you need to get your job done.