Get matched with top basement waterproofing pros in Ontario, CA
There are 4 highly-rated local basement waterproofing pros.
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Verified Reviews for Basement Waterproofing pros in Ontario, CA
*The Angi rating for Basement Waterproofing companies in Ontario, CA 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 Ontario, CA 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 10, 2025
Basement waterproofing pros in Ontario
Alpha Structural, Inc. has over 850 years of combined technical experience in Foundation and Hillside Repair. All of our experience is hard-core and down-in-the-trenches – not managed from behind a computer. Our in-house engineers and technicians are among the most experienced in all of Southern California. Alpha Structural, Inc. is the ONLY company in the SOCAL area licensed to ENGINEER and BUILD any type of repair project. That means that you'll work with us through the whole project, not unknown sub-contractors that you didn't hire and cannot control or predict. Alpha Structural, Inc. a licensed, bonded, and insured contractor (license # 663409). We are licensed with the following classifications: A (General Engineering Contractor). B (General Building Contractor). C-8 (Concrete). HIC (Home Improvement Contractor). CALL US NOW FOR AN INSPECTION OR ESTIMATE! (323)258-5482.
"I worked with Alpha once before, and they assisted with a second project 2 years ago which, now finally completed, I'm able to write a review about. Alpha helped with structural plans for windows in a garden level unit in order to prepare the proposal for city approval. Alpha is a big company and it took them a little while to complete everything; however I can certainly say that the engineer and contact people were knowledgeable and thorough. The plans were approved with their help and now that the unit is permitted for occupancy, the windows are a lovely attribute to the space."
Robert N on September 2024
Alpha Structural, Inc. has over 850 years of combined technical experience in Foundation and Hillside Repair. All of our experience is hard-core and down-in-the-trenches – not managed from behind a computer. Our in-house engineers and technicians are among the most experienced in all of Southern California. Alpha Structural, Inc. is the ONLY company in the SOCAL area licensed to ENGINEER and BUILD any type of repair project. That means that you'll work with us through the whole project, not unknown sub-contractors that you didn't hire and cannot control or predict. Alpha Structural, Inc. a licensed, bonded, and insured contractor (license # 663409). We are licensed with the following classifications: A (General Engineering Contractor). B (General Building Contractor). C-8 (Concrete). HIC (Home Improvement Contractor). CALL US NOW FOR AN INSPECTION OR ESTIMATE! (323)258-5482.
"I worked with Alpha once before, and they assisted with a second project 2 years ago which, now finally completed, I'm able to write a review about. Alpha helped with structural plans for windows in a garden level unit in order to prepare the proposal for city approval. Alpha is a big company and it took them a little while to complete everything; however I can certainly say that the engineer and contact people were knowledgeable and thorough. The plans were approved with their help and now that the unit is permitted for occupancy, the windows are a lovely attribute to the space."
Robert N on September 2024
In 1995, EagleLift was founded in Rancho Cucamonga, bringing innovative foundation repair and soil stabilization solutions to Southern California. In 2024, EagleLift joined forces with Groundworks, the nation’s leading and fastest-growing foundation repair and water management solutions provider, and rebranded under the Groundworks name. They will continue to offer industry-leading technology and resources to more customers across California. Groundworks provides elite customer service and quality home solutions for all foundation repair and concrete repair needs.
In 1995, EagleLift was founded in Rancho Cucamonga, bringing innovative foundation repair and soil stabilization solutions to Southern California. In 2024, EagleLift joined forces with Groundworks, the nation’s leading and fastest-growing foundation repair and water management solutions provider, and rebranded under the Groundworks name. They will continue to offer industry-leading technology and resources to more customers across California. Groundworks provides elite customer service and quality home solutions for all foundation repair and concrete repair needs.
RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!
RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!
Our experience includes new construction and remodels in both residential and commercial industry. We plan, manage, and build multi-phase projects from start to finish. We offer an end-to-end client experience that includes seamless communication, on-site organization, and solid, quality handiwork every time. We work with homeowners and designers to produce work we know you’ll love. Call us today and bring our project management skills and extensive construction experience to your next project.
"Everything went well. Norman and his team are extremely knowledgeable with the work as well as local city codes. Results exceeded expectations."
Daniel L on April 2024
Our experience includes new construction and remodels in both residential and commercial industry. We plan, manage, and build multi-phase projects from start to finish. We offer an end-to-end client experience that includes seamless communication, on-site organization, and solid, quality handiwork every time. We work with homeowners and designers to produce work we know you’ll love. Call us today and bring our project management skills and extensive construction experience to your next project.
"Everything went well. Norman and his team are extremely knowledgeable with the work as well as local city codes. Results exceeded expectations."
Daniel L on April 2024
JRD Construction is located in Los Angeles, California and is proud to be Los Angeles leader among home remodeling contractors. We offer high quality materials and craftsmanship for all your home remodeling needs. With over 22 years of residential and commercial remodeling experience, JRD Construction has the expertise for your home improvement project!
"They were the real deal Gave me an amazing price for my patio cover project The work was done in a great manner and right on time I will definitely recommend JRD Construction"
nofar b on April 2024
JRD Construction is located in Los Angeles, California and is proud to be Los Angeles leader among home remodeling contractors. We offer high quality materials and craftsmanship for all your home remodeling needs. With over 22 years of residential and commercial remodeling experience, JRD Construction has the expertise for your home improvement project!
"They were the real deal Gave me an amazing price for my patio cover project The work was done in a great manner and right on time I will definitely recommend JRD Construction"
nofar b on April 2024
Specialize in detail work, Tile, flooring, paint, backsplash, any home remodel my team can do, what difference us the attention to detail.
Specialize in detail work, Tile, flooring, paint, backsplash, any home remodel my team can do, what difference us the attention to detail.
HIC ( Home Ideas and Construction ) is a Family owned Business we are construction company. We look forward to coming out to your home and exploring the best, most efficient and budget conscious way we can upgrade you home. Specialize in Remodeling kitchens, bathrooms, pavers, outdoor landscape, patio enclosures, painting and ADU's to garage conversion from blueprinting to city permits we can walk you thru . We know that you are putting your faith and trust in your contractor, we work hard to earn your trust and satisfaction. Our team of experts offers you the latest modern and eco-friendly, materials and aesthetic work that you can imagine.
"ADU construction Plumbing, electrical, drywall, Painting"
Elbia M on February 2025
HIC ( Home Ideas and Construction ) is a Family owned Business we are construction company. We look forward to coming out to your home and exploring the best, most efficient and budget conscious way we can upgrade you home. Specialize in Remodeling kitchens, bathrooms, pavers, outdoor landscape, patio enclosures, painting and ADU's to garage conversion from blueprinting to city permits we can walk you thru . We know that you are putting your faith and trust in your contractor, we work hard to earn your trust and satisfaction. Our team of experts offers you the latest modern and eco-friendly, materials and aesthetic work that you can imagine.
"ADU construction Plumbing, electrical, drywall, Painting"
Elbia M on February 2025
Foundation and Structural Repair Contractors. Family owned and operated, based in Los Angeles, and serving the Greater Los Angeles area, Foundation Repair LA Inc. represents over 55 years of combined experience in structural repair, providing an unparalleled level of workmanship and customer service.
"I highly recommend them to everyone that needs help with their foundation. Very helpful and knowledgeable"
Rebecca H on October 2022
Foundation and Structural Repair Contractors. Family owned and operated, based in Los Angeles, and serving the Greater Los Angeles area, Foundation Repair LA Inc. represents over 55 years of combined experience in structural repair, providing an unparalleled level of workmanship and customer service.
"I highly recommend them to everyone that needs help with their foundation. Very helpful and knowledgeable"
Rebecca H on October 2022
HOT MOP - WATERPROOFING *SHOWER PANS *DECKS *BALCONIES *PLANTERS *STAIRS *WALLS *FLAT ROOFS ECT.....
HOT MOP - WATERPROOFING *SHOWER PANS *DECKS *BALCONIES *PLANTERS *STAIRS *WALLS *FLAT ROOFS ECT.....
Locally owned and operated, Get Her Done has the experience and knowledge to complete any project around your home. With a vast customer base and skills that extend well beyond a singular service, give us a call today for any fencing, general remodeling, or handyman needs!
"Very well. Roy was wiling to consider various ways to fix the gate. We chose one of his suggestions and he went right to work. He has all the right tools on his truck. I’m very happy with The results. I would definitely use Roy again (and it’s not because we have the same name !!!)"
Roy H on March 2025
Locally owned and operated, Get Her Done has the experience and knowledge to complete any project around your home. With a vast customer base and skills that extend well beyond a singular service, give us a call today for any fencing, general remodeling, or handyman needs!
"Very well. Roy was wiling to consider various ways to fix the gate. We chose one of his suggestions and he went right to work. He has all the right tools on his truck. I’m very happy with The results. I would definitely use Roy again (and it’s not because we have the same name !!!)"
Roy H on March 2025
Basement waterproofing services FAQs
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.
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