Top-rated basement waterproofing pros.

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Avatar for Alpha Structural, Inc.

Alpha Structural, Inc.

8334 Foothill Blvd
4.67(
231
)
Approved Pro

Alpha Structural, Inc.

8334 Foothill Blvd
4.67(
231
)
Approved Pro
Customers say: Super punctual
219 local quotes requested
33 years of experience

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


Avatar for Groundworks

Groundworks

1850 S. Parco Avenue
3.55(
20
)
Approved Pro

Groundworks

1850 S. Parco Avenue
3.55(
20
)
Approved Pro
Customers say: Super punctual
56 local quotes requested
30 years of experience

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. 1116054

"The job was done professionally and correctly"

Stephen B on October 2025

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. 1116054

"The job was done professionally and correctly"

Stephen B on October 2025


Avatar for Jrd construction

Jrd construction

6159 Melvin Avenue
5.00(
2
)

Jrd construction

6159 Melvin Avenue
5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

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!

"This company is an amazing company From the first meeting the guy was so nice and knowledgeable He helped me understand what was my problem and what are the possible solutions. would highly recommand!"

Orel L on December 2023

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!

"This company is an amazing company From the first meeting the guy was so nice and knowledgeable He helped me understand what was my problem and what are the possible solutions. would highly recommand!"

Orel L on December 2023




RocFlooring

15017 Joycedale St
No reviews yet

RocFlooring

15017 Joycedale St
No reviews yet

Decorative and Industrial flooring. Repairs, polishing and coatings for garage, patio, deck, warehouse. Anaheim, Orange County. Factory trained, professional application at a very low price. I also do commercial waterproofing, and heavy duty floors for auto shops, warehouses, food grade and craft brewers. I only use USA made products that are environmentally safe. Licensed and insured general contractor for OC, Los Angeles, and Inland Empire.

Decorative and Industrial flooring. Repairs, polishing and coatings for garage, patio, deck, warehouse. Anaheim, Orange County. Factory trained, professional application at a very low price. I also do commercial waterproofing, and heavy duty floors for auto shops, warehouses, food grade and craft brewers. I only use USA made products that are environmentally safe. Licensed and insured general contractor for OC, Los Angeles, and Inland Empire.


Cleanforce Concrete Corporation

1895 W Commonwealth Ave
No reviews yet

Cleanforce Concrete Corporation

1895 W Commonwealth Ave
No reviews yet

Cleanforce Concrete provides high tec epoxy and concrete polishing services to clients ranging from a two car garage to industrial and commercial projects over 100,000 + Sq. Ft. and pretty much everything in between. Cleanforce has completed projects and provided for major work for Procter and Gamble, The Boring Company, (Spacex) Bebe International, Ace Hardware Stores, Rusty's Pizza chain, SSP AeroSpace, Pacific Design Center, Fire and Police stations for Culver City as well as projects on the U.C.L.A. and U.C.S.B. campuses. We have completed over thirteen million square foot of concrete polish and epoxy flooring systems in Southern California and will provide you with addresses to any of our projects for your review. We have a four million dollar comprehensive liability umbrella policy and will provide you with quality references upon request.

Cleanforce Concrete provides high tec epoxy and concrete polishing services to clients ranging from a two car garage to industrial and commercial projects over 100,000 + Sq. Ft. and pretty much everything in between. Cleanforce has completed projects and provided for major work for Procter and Gamble, The Boring Company, (Spacex) Bebe International, Ace Hardware Stores, Rusty's Pizza chain, SSP AeroSpace, Pacific Design Center, Fire and Police stations for Culver City as well as projects on the U.C.L.A. and U.C.S.B. campuses. We have completed over thirteen million square foot of concrete polish and epoxy flooring systems in Southern California and will provide you with addresses to any of our projects for your review. We have a four million dollar comprehensive liability umbrella policy and will provide you with quality references upon request.


Avatar for Home Remodeling By Treeium Inc - Orange Co

Home Remodeling By Treeium Inc - Orange Co

17901 Von Karman Ave
4.63(
24
)

Home Remodeling By Treeium Inc - Orange Co

17901 Von Karman Ave
4.63(
24
)
Customers say: Quality work
34 years of experience

Treeium is the leading household name in the home improvement and design industry. We are leading by our high level of integrity, innovation, customer’s satisfaction and technology while providing unmatched service, selection, convenience and consideration. We are a team of experienced experts who are happy to come to work, who feel respected and are committed to making sure that every customer feels special. We guarantee customer satisfaction by our financial strength, transparency and full project visibility through our unique and innovative technology. We are committed to serving our communities by providing sustainable, ecofriendly remodels and energy solutions that benefit both the consumer and the planet. In addition, we help beautify the planet and offset our carbon footprint by planting a tree with every completed project. With Treeium, your home improvement project is more than a simple remodeling… it's a #Change4Better!

"Treeium recently completed the remodel of a portion of my home and a detached garage to create two apartments (ADUs). Unfortunately, my experience was very negative and fraught with tension, disagreement, and arguments. Most importantly, the project was scheduled to be completed in 3.5 months but took over 7 months to complete, without a reasonable cause for the delay. Additionally, they repeatedly touted their years of experience and expertise, which caused me great concern when I discovered that their contract’s payment schedule forced me to pay large sums of money for work that had not been completed. On a positive note, their sales pitch and marketing are exceptional."

Neal W on February 2022

Treeium is the leading household name in the home improvement and design industry. We are leading by our high level of integrity, innovation, customer’s satisfaction and technology while providing unmatched service, selection, convenience and consideration. We are a team of experienced experts who are happy to come to work, who feel respected and are committed to making sure that every customer feels special. We guarantee customer satisfaction by our financial strength, transparency and full project visibility through our unique and innovative technology. We are committed to serving our communities by providing sustainable, ecofriendly remodels and energy solutions that benefit both the consumer and the planet. In addition, we help beautify the planet and offset our carbon footprint by planting a tree with every completed project. With Treeium, your home improvement project is more than a simple remodeling… it's a #Change4Better!

"Treeium recently completed the remodel of a portion of my home and a detached garage to create two apartments (ADUs). Unfortunately, my experience was very negative and fraught with tension, disagreement, and arguments. Most importantly, the project was scheduled to be completed in 3.5 months but took over 7 months to complete, without a reasonable cause for the delay. Additionally, they repeatedly touted their years of experience and expertise, which caused me great concern when I discovered that their contract’s payment schedule forced me to pay large sums of money for work that had not been completed. On a positive note, their sales pitch and marketing are exceptional."

Neal W on February 2022


Avatar for Omega Structural, Inc.

Omega Structural, Inc.

4269 S. Harvard. Blvd
5.00(
3
)

Omega Structural, Inc.

4269 S. Harvard. Blvd
5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Have foundation issues with your home? Los Angeles, California has had approximately, 4,000 earthquakes since 1932. It has a very high earthquake risk, and as a home owner, the structure of your homes should be in great hands. That’s why we are here! Omega Structural, Inc. is a bonded, insured and licensed company that is qualified to fix your soft story building, home foundation issues, earthquake bolting, retrofit, hillside repair, caissons, underpinning pads, waterproofing, French drains and swales, to keep the water away from your home. Please call us if you are noticing; windows & doors not closing like they used to, cracks on your floor/ floor tiles/or foundation, flaws or cracks in exterior walls of your home and/or uneven floors as these all can be indicators of a foundation problem.

"They do fantastic work,and follow their schedule."

Darrent G on September 2018

Have foundation issues with your home? Los Angeles, California has had approximately, 4,000 earthquakes since 1932. It has a very high earthquake risk, and as a home owner, the structure of your homes should be in great hands. That’s why we are here! Omega Structural, Inc. is a bonded, insured and licensed company that is qualified to fix your soft story building, home foundation issues, earthquake bolting, retrofit, hillside repair, caissons, underpinning pads, waterproofing, French drains and swales, to keep the water away from your home. Please call us if you are noticing; windows & doors not closing like they used to, cracks on your floor/ floor tiles/or foundation, flaws or cracks in exterior walls of your home and/or uneven floors as these all can be indicators of a foundation problem.

"They do fantastic work,and follow their schedule."

Darrent G on September 2018


Avatar for Los Angeles Retrofit & Construction Inc

Los Angeles Retrofit & Construction Inc

18075 Ventura Blvd
5.00(
6
)

Los Angeles Retrofit & Construction Inc

18075 Ventura Blvd
5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We believe our retrofit, remodeling and construction services will give you the best outcome and give you the most value from your property investment. When you work with LARC, you work with the principles of the company from start to finish. Whether you are a concerned home owner, potential home buyer or just want to ask us few questions about your foundation, LARC can help.

We believe our retrofit, remodeling and construction services will give you the best outcome and give you the most value from your property investment. When you work with LARC, you work with the principles of the company from start to finish. Whether you are a concerned home owner, potential home buyer or just want to ask us few questions about your foundation, LARC can help.

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Basement Waterproofing questions, answered by experts

The difficulty of adding a basement to an existing house can vary depending on the house’s location, the size of the basement, and the type and condition of the existing foundation. Adding a basement is a job best handled by the pros, so you’ll need to enlist professional help for this project.

Yes, professional installers use weather-resistant materials to protect the dish and cabling from environmental damage.

Unfortunately, mold can grow pretty much anywhere, on any kind of surface. However, you’re most likely to see it in damp areas like basements or bathrooms, as well as anywhere there has been a water leak. Consult a local mold specialist to determine if certain areas of your home are prone to mold based on climate and other factors.

Yes, basement insulation needs a vapor barrier due to its susceptibility to moisture seeping in from the outside of the house. You should install a moisture barrier before you install insulation or purchase insulation that comes prebuilt with a moisture barrier to avoid water damage in your insulation and costly mold and water remediation expenses. 

In most cases, a crawl space will not dry out on its own unless the moisture comes from an uncommon flood and isn’t expected to be a recurring issue. For most homeowners, moisture problems in the crawl space will only continue to get worse over time, so addressing the underlying problem with gutter systems or a foundation drainage system and setting up a preventative solution like a dehumidifier is necessary.

The Tustin, CA homeowners’ guide to basement waterproofing services

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

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