*The Angi rating for Basement Waterproofing companies in Thermal, 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 Thermal, 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 27, 2026
Serving Thermal, CA and surrounding areas
In business since 2016
Free estimates
Credit card accepted
"Very professional. Completed the job in two weeks. The deliverables were as promised. They were very independent, requiring only minimal involvement from the client. However, communication with the owner could be enhanced a bit."
Serving Thermal, CA and surrounding areas
In business since 1985
Free estimates
Credit card accepted
"It went fine. They showed up on time. They did exactly what they said they were going to do. They left properly."
+19
Serving Thermal, CA and surrounding areas
In business since 1949
Free estimates
Emergency services offered
"it went fine. they sent out extra crew to help finish on time when they found additional work that had to be done in order to put the skylight in.
"
Serving Thermal, CA and surrounding areas
In business since 1995
Free estimates
Emergency services offered
"They reinforced my building as required by City of Los Angeles for Retrofitting; The service was professionally and smoothly done, He is a very honest and a very knowledgeable contractor, and very ethical. He is very trustworthy."
Serving Thermal, CA and surrounding areas
In business since 1979
Free estimates
Emergency services offered
"He was very prompt in coming and was very knowledgeable and helpful. They kept me informed that he was running behind and when he would be here which I appreciated and they did not keep us in the dark. I am considering contacting them in the future."
Serving Thermal, CA and surrounding areas
In business since 1984
Free estimates
Credit card accepted
"The project manager was a good salesman with the promise of a discounted price because another job had been canceled and they could start in two days, and I could take advantage of the insurance and bond already having been paid. He inferred he didn't want to lose it. Although I knew that probably wasn't true, as all big companies have insurance and workman's comp in place, I wanted my deck done quickly and my next estimator could not come out for two weeks. Although the salesman claimed I was getting a good deal, the contract seemed a bit high, and sales tax added. I have never had sales tax added separately on this type of work. They did not demolish all the brick work as in the contract. They tried to use untreated wood under the deck which I was specific that was why the old deck needed to be replaced. Luckily, we caught that. The job was done quickly and clean up was nominal; however, I have found the concrete base of the demolished brick work was just covered with dirt and it still remains."
+12
Serving Thermal, CA and surrounding areas
In business since 1978
Free estimates
Emergency services offered
"the price was negotiable, was a little over my budget but for the quality of the work. I can see why it was the price it was. I have to keep in mind my house isn't not small, so they square footage that is already existing PLUS the addition, made it a lot bigger. I like that the workers were here constantly. Even through out inspections, once it was passed they continued to work. The foreman was also great and would constantly inform me about the stages that were going to come next. As far as the office, i cannot complain. Any concerns i had were resolved right away, and I had constant communication from the coordinator and the accounting side, along with a young lady that would come every week to check up and make sure the job was being ran properly.
"
Serving Thermal, CA and surrounding areas
In business since 2009
Free estimates
Credit card accepted
"I have had a great experience with Premiere Home Builders Inc. They tore down my old porch which was in bad condition and wobbly. They took care of all the drawings and permits. The work they did was high quality. Any difficulty that was encountered Yosef did his best to accommodate the need. Yosef was always willing to go the extra mile.I would recommend Premiere Home Builders Inc. without a hesitation. They combine the most important attributes very well: value, quality and honesty.
"
+7
Serving Thermal, CA and surrounding areas
In business since 1998
Free estimates
Emergency services offered
"Everything went great highly recommend !!!"
+14
Serving Thermal, CA and surrounding areas
In business since 1986
Free estimates
Warranties offered
"Clean, fast and were able to come earlier than planned."
+7
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.
From average costs to expert advice, get all the answers you need to get your job done.
Need to fix basement water problems or safeguard your home from damage in the future? Use this basement waterproofing cost guide to budget appropriately.
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.
Can’t seem to get rid of the moisture and mold in your basement? Learn why basements tend to hold moisture and how to get rid of moisture in the basement.
Wondering how to get rid of musty smells in your basement? Get rid of them permanently using this DIY guide and learn when to call a pro.
Crawl space maintenance is a necessary part of keeping your home protected and energy-efficient. Follow these tips to properly maintain your crawl space.
Taking protective measures and reacting calmly and quickly are the best ways to reduce water damage and avoid electrical hazards in flooded basements.
