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Crawl Space & Basement Technologies LLC

About us

Crawl Space & Basement Technologies, LLC is part of America’s largest Waterproofing and Sealed Crawl Space dealer networks. We hold the Council Certified Microbial Remediation Supervisor designation and we are a Progress Energy pre qualified contractor. We’re also the proud recipient of the Angies List Super Service Award, in recognition of our superior service for customers.

Business highlights

Emergency services offered
36 years of experience

Services we offer

Waterproofing. Spray foam insulation.

Amenities

Emergency Services

Yes

Free Estimates

Yes

Accepted Payment Methods

  • CreditCard
Reviews
4.726 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
88%
4
4%
3
4%
2
0%
1
4%
Showing 1-25 of 26 reviews
Thomas V.
Dec 2017
5.0
Yes, I recommend this pro
Excellent work, on time, very professional, and clean up after them selves.

Xiaobin Y.
Jul 2016
5.0
Yes, I recommend this pro
$4,900
Jason and his crew did a great job encapsulating our crawl space. I had noticed condensation in the crawl space a few times and after some reading online, I realized that having a closed crawl space is the most appropriate way to deal with moisture issues. I interviewed 6 contractors and Jason won my business because of his knowledge and a fair quote. The job was done in a couple days and everything was cleaned up well. After the encapsulation, I have not seen any condensation down there even during these hot and humid summer days.

William P.
Dec 2015
5.0
Yes, I recommend this pro
unknown

Alesia S.
Nov 2015
5.0
unknown

Catherine W.
Oct 2015
1.0
$12,000
I had a horrible experience with them.  He was just horrible.  I really just intended to sit down and write a novel about how horrible the experience was.  It's one of those things that's not readily awful until you realize something went wrong.  Then when you realize that something went wrong and you actually realize what he actually did it's like wow, your a scumbag. 

Jeffrey H.
Jul 2015
5.0
Yes, I recommend this pro
$6,500
.

Richard W.
May 2015
5.0
Yes, I recommend this pro
$5,000
unknown

Anthony R.
Oct 2014
5.0
Yes, I recommend this pro
$8,900
Great, did what they said they would do in a timely manner. Very professional and responsive.

Kristen H.
Jan 2014
3.0
$2,600
THESE DETAILS ARE A CONTINUATION OF MY LAST REVIEW:
PERMITTING ISSUES: On October 14th, I sent Jason a text
message asking when the job site would be cleaned up and when the job would be
permitted. He tried to suggest that
there was an issue with the permit – because I pulled it, not him. It took 5-6
text messages back and forth to get Jason to understand the Town of Cary issued
me the permit based on the project description. He continued to suggest it was
incorrect – then went so far as to say that he ‘took care of it’ by suggesting
he paid additional funds for an electrical permit – since I was out of town. I
immediately called the Town of Cary permit office that confirmed Jason Mullins
did not pay any additional funds for the permit and that I was in fact issued
the correct permit. On October 15th,
Jason sent me a text letting me know the inspection was scheduled for the
following day, Wednesday October 16th. Jason knew I was out of town
on business in California that week; but insisted on texting me around 8am EST,
which is 5am local time. On Thursday, October 17th he sent me a text
stating the inspector didn’t inspect the crawlspace because no one was home;
yet the Town of Cary told me I didn’t need to be there. Jason said he would
handle the coordination of the inspection on October 17th. The
morning of October 18th, I got a voicemail from the Town of Cary
Electrical inspector stating that the paperwork he was looking at was
incorrect. The application listed a 1000 SF crawlspace but he said there was no
way our crawlspace fit that description; he also suggested if we were paying
based on SF that the numbers could be off.
I sent Jason a text message and explained this; to which he blamed me
and suggested this was another issue from… you guessed it – me pulling my own
permit! Thankfully, we were able to get
that quickly resolved with the Town of Cary within 24 hours.
MORE ISSUES: On Monday, October 21st Jason sent me a text message
explaining that the permit for my crawlspace would not be issued. The reason
was that the ground on the one side of my house was too high; something that
would and should have been noticeable and evident during our August
walk-through and estimate. Jason offered to correct this issue by installing a
$200 foundation vent. I explained to
Jason that I felt like he was upselling me: first with the permits, then with
the sump pump, and now with this vent. He replied that he wanted to meet us in
person to explain our options and go over them; I offered to have him meet with
my husband as I was still out of town on business but we couldn’t match up
their two work schedules. When my
husband came home; we called Jason to speak with him but left him a message
instead. On October 25th I sent Jason a
text message asking if they would install the vent for $100. His $200 price
explanation included labor charges of unearthing dirt that had already been dug
up – he agreed and said it’s a deal. We planned to have the vent installed the
following Monday. I told him I would cut
him his check for the crawlspace and additional $100 once the job site was
cleaned up and the permit was approved, which caused an issue. Jason wanted to
hold the warranty until I paid in full; but I made it clear that the warranty
was included with the job so I’d pay for the job in full when I got everything
promised to me in full. Jason became argumentative and combative even via text
message; demanding and threatening me if I didn’t pay in full by October 30th,
his exact words ‘not a threat at all, more of a promise’. The situation became
so aggressive that I contacted the Wake County government and a lawyer who
instructed me to keep all the emails, text messages, and phone conversation
records for my protection and future needs and assured me I would be protected
both financially and physically from Jason. My husband decided to get involved
and called Jason on Monday, October 28th. During this conversation, Jason told
my husband that he was charging me for the vent cover because I was so
‘difficult’ that he would have normally done it for free but out of principle
wanted to stick me with as big of a bill as he could for his ‘trouble’ and
‘headaches’. Aside from that, the two
came to an understanding - Jason would email me to apologize for his words and
behavior and would refrain from threatening and being aggressive with me; and
in turn I would pay for the job in full upon clean up and inspection. Jason did email an apology later that day, as
he told my husband he would.
HOW IT ENDED: We scheduled the final inspection for Tuesday,
October 29th and met with Jason on Wednesday, October 30th. Crawlspace Basement and Technologies did
clean up our job site and we did eventually pass inspection. Jason did provide
us with our warranty at the same time I paid in full; and yes, he did charge
the extra $100 for the foundation vent. We parted ways and there has been zero
contact/communication since.
OVERALL: My initial experience couldn’t have been more
different from my actual interactions with Jason Mullins or Crawlspace Basement
and Technologies. I’ve never met a business owner who speaks to customers in such
a rude and aggressive way, especially women. Although we did get the work that
was promised, it was definitely not a simple 1-day project, which it was sold
as. Had Jason have been kind, reasonable, or professional we would have been
thrilled to recommend his work and company to others. However based on the
treatment I received and the experience I had, I can’t in good conscience
recommend that anyone work with this company.
Looking back, I wish we selected either Dennis C*** of Healthy Home
Restoration (Crawl Space Division) or Nathan Rider of Peak Energy.

Response from Crawl Space & Basement Technologies LLC
"We are surprised by this review and its content. This was a young couple that we tried to be flexible with and we tried to help them out. If you look at all of our other reviews on Angie's List, you will see that we have many satisfied customers who have given us very high ratings. In fact, our reviews are so good, that we are a past Angie's List Super Service Award Winner. We pride ourselves in doing quality work and providing good customer service. We send our surveys after the completion of each job to ensure that our customers are satisfied. If there is a problem, we strive to correct it. Many of our customers are referred to us by previous customers. This is the highest compliment we can receive. We value our customers and their referrals, and we take very seriously the trust that our customers have in us."

James M.
Nov 2013
5.0
Yes, I recommend this pro
$6,000
Jason provided a detailed estimate of the cost, with options for other work that might be done. Besides a moisture problem under the house and the resultant insect infestation, we had questions about the floors sagging. He said the sagging was not serious, and while CSBT could raise the floor if we wished it was not necessary at this time. That indicated to me that he was interested in doing a reasonable job rather than making a little extra money. Three different crews came out on different days to perform different steps in the process of removing the old insulation, cleaning insect waste from the wooden supports, providing a new moisture barrier and insulation, and cutting a drain through the crawl space wall. All of the crews were punctual and professional. The only hang-up was in the scheduling. The original plan was that the work would be done on three consecutive workdays, Thursday, Friday and Monday, but Jason postponed that the day's work by one day without telling us. This was a minor glitch. Overall, the work was well done, and the workers were courteous and professional.

David F.
Aug 2013
5.0
Yes, I recommend this pro
$5,000
Jason arrived on time and provided us with a cost effective solution for our crawl space.
All work was completed with professionalism and on time.
We interviewed 3 companies and picked the best one!
Thanks again Crawl Space and Basement Technologies!

Margaret G.
Aug 2013
5.0
Yes, I recommend this pro
We would highly recommend them. They were basically a God sent for us with our issues. They helped us get to the root of our problems that were caused by our renovation. We had water and wood under grade in our crawl space and we did not know that was going on. We had moles that had arisen because the contractor had caused it to flood and we did not know that. They were recommended to us and they were the number one company that rescued us and helped us to get a sealed crawl space.

Ron R.
Jun 2013
5.0
Yes, I recommend this pro
$7,500
Jason Mullins provided prompt and courteous service. He patiently answered all questions and re-arranged his work schedule based on our initial concerns of termites vs the the closed cell spray foam. He satisfied our concerns and the work was done as promised with minimal intrusion. Jason was the only contractor that initially quoted the Humid-Evac (a pipe and fan that evacuates crawlspace air outside the basement and to insure against humidity and ground odor).
We encountered a very minor issue when one of our water lines was broken when the removal of the existing insulation. I was extremely pleased that Jason's team took prompt and effective action to prevent any damage, arranged for an emergency plumber to fix the line, and did the clean-up (all within about a 3 hour period). I provide this as a compliment as there is often complications with work performed and having a competent crew to deal with issues as they arise is extremely important. The only delay we encountered was with the county permit process that was outside of Jason's control. Even though he incurred some unexpected expenses with the permit process he did not propose any type of increase to the quoted price. I'm extremely pleased with the work and believe this will add energy efficiency, improve the air quality in our home, and minimize pest and future maintenance issues.

Jose L.
May 2013
5.0
Yes, I recommend this pro
Everything turned out great. They were the best bid we received.

Christopher C.
Jan 2013
5.0
Yes, I recommend this pro
$5,000
They came in on time and did an excellent job. Jason was very responsive to the few concerns that I had. The first day they clean the crawlspace and installed the liner. On the second day they installed the spray foam on the walls. It looks great under there now and my hardwood floors are much warmer.

ANN P.
Jan 2013
5.0
Yes, I recommend this pro
$4,500
Jason Mullins of Crawl Space and Basement Technologies came to do my estimate. He was very prompt in all our dealings, and gave me probably the most prepared proposal I have ever rec'd. He knew down to the square foot the amount of materials needed--had even accessed the floor plan of the townhome--and was able to give me an exact estimate on the spot. He came with a list of [300] names and phone numbers to call for references. He also offered an Angie's list discount. All of this helped me decide on CSand BT for my project. The work was done on time, the work crew was very polite and unobstrusive. Payment was due only after all inspections were passed--which they were, no problem. I would recommend this company without hesitation.

JANIE B.
Nov 2012
5.0
Yes, I recommend this pro
$10,000
The workers were very courteous and prompt. They work continuously all day when they put in the drainage and sump pump. They were very helpful in answering all our questions. When they returned after we had another company put in a new heating system, they arrived on time and again answered our questions. Some unexpected areas were checked out and taken care of. This has not been completed yet, but when it is, there will be spray foam insulation put in. So far we are very pleased with their service.

Stephen M.
Jan 2012
5.0
Yes, I recommend this pro
$3,626
Having finished my background research on crawlspace sealing we began soliciting estimates from local contractors. We worked with Jason and Jeff Mullins over about a 9 month period. I initially requested an estimate which Jason provided, unfortunately I was not home at the time he came and he spoke with my wife. Once we'd had several estimates done my wife and I decide that on the basis of the impression Jason had made when he spoke with my wife about the project and the price he'd quoted that we wanted to proceed, but I asked for a return visit to discuss the details of the job. Jeff Mullins came when agreed and spent about 40 minutes gong over all my questions regarding the work.

Jeff and Jason both made some claims regarding the benefits of crawlspace sealing that some in the industry make, but which I could not find substantiated in independent research finding on the subject. It didn't matter because I understood that there is often a difference of opinion and I wasn't making my decision to proceed on the basis of any claims made. Sales folks are sales folks, so you need to be sure you understand what you are buying.

Once the work was scheduled it went smoothly. The installation/work crew arrived on time and proceeded as described. The work was done very well and all debris was completely removed. I could not ask for better quality of work. Jeff stopped by to inquire twice during the couple of days of work to see if we were pleased and to check on the job. The job was done and the inspections passed without any problem or issues.

About one month after the work was completed during a routine visit to service our HVAC system for the summer season our contractor commented that he was really impressed with the quality of the work done in sealing our crawlspace. He had previously recommended that we consider having it done due to the condensation he saw in the summer in the crawlspace. He did say that he thought the duct setting on the HVAC line that was done to send some conditioned air into the crawlspace was set a little too high a volume.

I called Jeff and he said he thought the setting was correct, but that he would come and check it for us. He came the same day and after inspecting it confirmed that it was set a little too high and that he adjusted it to the correct volume. He apologized for the mistake and checked the ventilation fan (from the crawlspace to the exterior through the foundation) and the rest of the job while he was here to just be sure nothing else was forgotten or not 100% as it should be.

Using a remote hygrometer I installed I can see that sealing our crawlspace has lowered the humidity in the crawlspace by about 15 to 20% with some seasonal variation of course.

Arthur Z.
Dec 2011
5.0
Yes, I recommend this pro
$9,400
My job was complicated because during the encapsulation, it was discovered that the house had a faulty drainage system that caused drainage water to back up into the crawl space underground causing it to remain damp. They brought this to my attention and fixed it at a very reasonable price. They did an excellent job. I encapsulated the crawl space because I was having hardwood floors installed but the OSB (plywood) subfloor in the house was too damp (10-14% humidity). I was affraid the hardwood floors would buckle and crack. The hardwood floors upon delivery were 6.5% humidity and had to be within 2% of the subfloor before installation. In about 3 weeks after encapsulation, the subfloor had dropped to 8.5-9.5% humidity and weeks later continued to drop! Before encapsulation, the crawl space was dark and damp and after encapsulation, it is well bright, white, and dry. The difference is fantastic both functionally and cosmetically!

Angela S.
Nov 2011
5.0
Yes, I recommend this pro
$5,500
We used them in the past to install drains and sump pump and both services were good. They came promptly for the estimate. They were willing to stay a long time and answer many questions. The work was performed quickly and when they told us it would be. The finished product is very good and it has cleared up our problem of congestion at home due to the mold.

Susan W.
Oct 2011
4.0
Yes, I recommend this pro
$7,700
Crew was very efficient. The first few days went smoothly. The sprayer for insulation broke and parts had to be ordered so there was a delay in getting final step done. I had to initiate most communication during installation. I would suggest company be more proactive in keeping client updated on problems and progress of work.

Scott F.
Sep 2011
5.0
Yes, I recommend this pro
$5,700
Besides the money that I had to spend it was a good experience. The employees were professional, punctual and did a good job. So far so good with the results. I would definitely recommend them to others. Only time will tell if this resolves the moisture and mold problem.

Brenda M.
Jul 2011
5.0
Yes, I recommend this pro
$10,000
They actually go in and seal off the crawl space entirely. They put in this heavy duty plastic and they spray foam in there. Their job is to spray the foam and for insulation. They do climate and humidity control. They were excellent. They came several times to the house explaining what they were going to do. They sent me to a house where they had done the work to show me what it was going to look like. They went into my house and look a lot of pictures and showed me where the issues were and how they were going to fix it. They showed me how it was going to look once it was done. It was a great experience. They were here when they said they were going to be and they did some extra things. I think $10000 is a lot of money and they threw in some extras but none the less it was more than I had expected. I have already recommended them to people who have called me. I had people come and see what was done.

Ellen K.
Jun 2011
5.0
Yes, I recommend this pro
$6,250
Jason spent four hours explaining how the installation would be done and what the anticipated result would be. He was never impatient or tried to rush my decision. His workers showed up on time, were professional and respectful and carefully cleaned up when finished. The crawlspace was pristine. The system has been in place for one year and it has brought the humidity in my crawlspace down from 80% to a consistent 50% throughout the warmest, most humid days. If I want to I can adjust that to 46% by turning up the dehumidifier. Jason answered all of my phone calls promptly, was always concerned that I was satisfied and personally inspected the job when it was complete. He owns the one company that I have used in this area that is professional, truly cares about customer satisfaction and has the integrity to stand behind its work and products. Jason goes above and beyond expectations. I highly recommend this company!

Robert H.
Apr 2011
5.0
Yes, I recommend this pro
$10,000
It went better than expected; Jason's crew started promptly in the morning each day; first starting with demolition work. They used plastic to protect and cover up items in the basement and moved quickly to demo and remove concrete. The drainage tile was installed and sloped well to ensure adequate water removal. Next the wall was covered and sealed with the moisture barrier and the tile and rock base was backfilled with concrete and finished off. Very clean and high quality install.
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Licensing

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FAQ

Crawl Space & Basement Technologies LLC is currently rated 4.7 overall out of 5.

Crawl Space & Basement Technologies LLC accepts the following forms of payment: CreditCard

Yes, Crawl Space & Basement Technologies LLC offers free project estimates.

No, Crawl Space & Basement Technologies LLC does not offer eco-friendly accreditations.

No, Crawl Space & Basement Technologies LLC does not offer a senior discount.

Yes, Crawl Space & Basement Technologies LLC offers emergency services.

No, Crawl Space & Basement Technologies LLC does not offer warranties.