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Sinai Construction

Foundation Repair, Earthquake Retrofitting, Basement Waterproofing,

About us

Sinai Construction is Southern California's oldest and most reputable foundation contractor with over 32 years' experience in foundation repair, seismic retrofitting, basement waterproofing, yard drainage, hillside foundation construction, slope repair, and other structural and concrete work. We have a General Engineering Contractor license and a General Contractor license. We are a member of the ICRI, and we are an A+ rated member of the Better Business Bureau. We are also the recipient of the Talk of the Town Award and the 2011 Angie's List Super Service Awards. Financing: No payments and no interest for 6 months on approved credit • 100% unsecured financing from $4,000 to $45,000 on approved credit • A quick, easy, and safe toll-free loan-by-phone application process • A fast credit decision in about 10 minutes • No paperwork

Business highlights

41 years of trusted experience

Services we offer

Foundation Repair and Replacement, Hillside Foundation Repair and Construction, Seismic / Earthquake Retrofit, Soft Story Retrofit, Foundation Bolting, Cripple Wall Bracing, Shear Transfer Tie Installation, Floor Leveling, Retaining Walls Construction, Slope Failure Repair and Stabilization, Foundation, Basement and Yard Drainage, Foundation and Basement Waterproofing / Damp Proofing, Concrete Crack Repair and General Concrete Work

Amenities

Free Estimates
Yes
Warranties
Yes


Accepted payment methods

Check
Financing Available
MasterCard
Visa

Photos of past projects

Reviews

4.969 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
86%
4
7%
3
3%
2
3%
1
1%


Rating CategoryRating out of 5
quality
5.0
value
4.6
professionalism
4.9
responsiveness
4.9
punctuality
4.9
Showing 51-69 of 69 reviews

Albert R.
01/2017
4.0
fountains, foundation repair
  + 0 more
.
Description of Work: .

Rating CategoryRating out of 5
quality
4.0
value
4.0
professionalism
4.0
responsiveness
4.0
punctuality
4.0

Yes, I recommend this pro

Mark C.
03/2016
5.0
foundation repair
  + -1 more
unknown
Description of Work: .
Rating CategoryRating out of 5
Yes, I recommend this pro

Dianne F.
12/2015
5.0
foundation repair
  + -1 more
unknown

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Jon D.
07/2015
5.0
earthquake retrofitting
  + -1 more
.
Description of Work: .
Rating CategoryRating out of 5
Yes, I recommend this pro
$125

Steven C.
05/2015
5.0
foundation repair
  + -1 more
unknown

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$3,000

Kristine H.
05/2014
1.0
foundation repair
  + -1 more
unknown
Description of Work: I contacted Sinai Cinstruction, left a message but they never responded.

Rating CategoryRating out of 5
responsiveness
1.0


Response from Sinai Construction
Hello [member name removed], Thank you for making us aware of this issue. We do our best to reach out to every person who contacts us within one business day and we apologize for not contacting you. If you would be so kind and let us know how you attempted to contacted us and on what day? This will help determine if there was an error and allow us to correct it. We will gladly schedule an inspection and answer any questions you have. Thank you again for taking the time to bring this to our attention. Paddy, Office Manager 323-655-0960

Gordon S.
05/2013
5.0
basement waterproofing, foundation repair
  + 0 more
Very good experience
Description of Work: Evaluation of foundation condition with a written estimate .

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Jessica L.
04/2013
5.0
earthquake retrofitting, foundation repair
  + 0 more
see above
Description of Work: standard retrofit process for a 1930 home. it was great dealing directly with Gary the company president and i found his style to be congruent with my own. Gary's detail oriented process and patience with helping me understand the complex process of retrofitting was an asset. from a scheduling and payment perspective, sinai was highly flexible with my schedule, prompt and reliable. the only reason i dinged them was because the crew that was on my property made a minor mess with my bathroom. in hindsight i would have no issue with using them again but would perhaps allow the $85 charge to have a porta-potty onsite - i was trying to save money and every bit helps.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
4.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$5,000

yukiko K.
01/2013
5.0
earthquake retrofitting, foundation repair
  + 0 more
perfect
Description of Work: probably the best contractors i've ever worked with. their attention to detail and professionalism is second to none.
Rating CategoryRating out of 5
Yes, I recommend this pro
$11,500

yukiko K.
01/2012
5.0
foundation repair
  + -1 more
Very well and clean up was amazing.
Description of Work: Foundation re-enforcing.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$8,000

Tena A.
01/2012
5.0
foundation repair
  + -1 more
I can't say enough about Sinai Construction and have already referred them to others. This was a very big job hillside as well. My Postman, UPS delivery people, and Neighbors have all told me how great and professional all the workers have been in their work here and helping with traffic on my street. This rarely happens in the Hills. I would hope that other people could have an experience of this caliber when work is needed on their home. I have never experienced a company like this, except for Modaa Inc. who found Sinai Construction for me. I have had some very bad experiences with other contractors until now. This is the way real contractors should run a business. Sinai Construction has taken The CON out of Construction.
Description of Work: Demo and removal of V ditch along side of house. Water proofing instillation, instillation of French drain, with new gravel and soil with all proper required tests needed for City approval to pass requirements. Protection from bad weather done as needed. All steps have been done in an excellent fashion and explained to me with photos as well as verbally. Work still in progress.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$31,000

Howard R.
11/2011
5.0
earthquake retrofitting, foundation repair
  + 0 more
Gary Sinai, the owner, oversaw the work from start to finish. He provided a fixed price quotation which he adhered to. The work was all done on time, on budget and his people were very competent and professional throughout. I would highly receommend his services.
Description of Work: Sinai Construction provided earthquake retrofitting work.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$4,000

Response from Sinai Construction
Hi Member, Thank you for your review and may you only know joy in your new home. Gary

Tena A.
11/2011
5.0
foundation repair
  + -1 more
Stated above.
Description of Work: I have only made a deposit and we are in begining stages of work and permits. So far very helpful from the first meeting. I have been very satisfied with the help that has been provided to me in trying to solve my problem. Their communication has always been in a timely fashion and helpful to my situation.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,000

kim S.
10/2011
5.0
earthquake retrofitting, foundation repair
  + 0 more
Sinai Construction was an absolute dream from start to finish. While I was in escrow I had two other foundation specialists look at the house and had very different reports and varying degrees of professionalism. Sinai blew me away at the estimate. The estimator showed up on time and went straight to work without pulling me in to do show and tell on every little crack he found. While he was under the house the owner of the company showed up to see how everything was going. Once the estimator finished, he answered all of my questions and said he would have the report the next morning. The report was delivered as promised and the price was higher than the other two estimates I had. However with regards to price, Sinai didn't give an estimated price, they provided a firm price. While the other reports came in slightly lower (roughly 10%), neither of them gave an actual total. The other firms provided approximate ranges so I didn't know what the total cost would be or what I would be getting into. Sinai's report was very detailed, every item was spelled out with its individual cost. I sat down with Gary, the owner with my other estimates and questioned why he found more things wrong with my foundation than the others. He was very patient and pulled out the 158 pictures the estimator took during his visit. Yes, 158 pictures! He showed me every single crack, pier, post, broken girder, etc. Everything that was wrong and needed repair, he proved it with pictures. And to all you skepics out there, I was looking to see if it was the same crack/pier taken at a different angle. It wasn't. I signed the contract immediately and had a start date in 10 days. The crew started two days early. They showed up every day on time, cleaned up after themselves every day and never left a mess. There were very quiet and didn't blast radios/music. They were super friendly. When it came time to leveling the floors, they were perfectionists and were honest on that they could try to do more in one spot, but it would cause even more residual damage and with the old houses like mine, they could only do so much. They also re-stuccoed the outside of the house. Another thing the other firms told me would be my responsibility. The day after they finished, the owner Gary called to tell me there is a serious drainage issue and told me to have my contractors give him a call and he would tell them what the problem is and how to fix. This is coming from a firm who specializes in drainage. Instead of trying to take the business away from the contractors, he is offering to tell them where the problems are. Talk about integrity. I went under the house to check out what $20,000 gets me, and the work was impecable. You could see the quality of the materials they used and the care given to every crack. I am so very pleased. Lastly, when I went in to give my final payment, I asked Gary for an estimate on the drainage since he already know my property inside and out and because I have plenty of other fun work for my contractors. Gary said no, he doesn't want to take work away from my contractors but if my contractors decide they dont want the work, he will be happy to estimate. It is very rare to find integrity in business these days, especially construction business. Gary and his firm deserve an A+, gold star, and my highest regard. If you have any construction needs, or escrow inspections, Sinai should be the first firm to call. You will not regret it.
Description of Work: Repair foundation, floor leveling, replace post & piers, replace girders, and earthquake retrofit.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$20,000

Response from Sinai Construction
Hi Member, Thank you so much for your review. I wish you that very soon you will only spend money on more enjoyable home improvements projects. :) Best Regards, Gary

Donald F.
08/2011
5.0
foundation repair
  + -1 more
It went very well. They were very responsible.
Description of Work: They repaired my foundation.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$4,000

Response from Sinai Construction
This was a real pleasure to see your kind words in here. Thank you! Gary

FRANCESCO G.
08/2011
5.0
foundation repair
  + -1 more
The estimate was accurate and good priced. Gary, the owner, is a wonderful person and he is always ready to help and answer any question you might have. The job was done in time and the workers where great. I would recommend this company any time. It a matter a fact I will hire them again for a different job.
Description of Work: Foundation repairs.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$15,000

Response from Sinai Construction
Hello Member, Thank you for your kind work and i wish you a lot of happy days in your new beautiful home. Best Regards, Gary

01/2011
5.0
drain pipe, foundation repair
  + 0 more
They were very professional and they answered a lot of questions pretty well. They showed up on time. They told us what to expect as far as what the problems were and how much we had to pay was pretty accurate. There weren?t any big surprises. The owner was very helpful and he explained a lot to us about what was going on. We are planning to call them for a couple of other things that need to be updated. They were probably some of the more expensive people but we trusted them and they did good work on the house.
Description of Work: We used Sinai Construction for some foundation updates on our house. They also did a French drain.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$4,000

Martha R.
07/2010
5.0
foundation repair
  + -1 more
Sinai construction is an amazing company.I needed foundation repair work done at my house. Out of the three companies that I called, Sinai Construction was the only company that spent over an hour crawling and inspecting under the house and the perimeter, taking measurements and photos. Daniel?s thorough inspection covered not only the existing damage to my foundation but also the cause of it, which was bad drainage. They showed me the photos from under the house and took the time to explain how they are going to do the repairs. Their crew was very competent and polite. I could not be more pleased.
Description of Work: Foundation Repair.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$5,000

Jacob S.
08/2008
5.0
home remodeling
  + -1 more
They did an efficient job. They were friendly and trusted them in my home while I was gone. They had some issues but took care of them in a timely fashion.
Description of Work: They completely remodeled my kitchen and bathroom. They did cabinetry work, floor work, electric and plumbing.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
4.0

Yes, I recommend this pro
$18,000
    • 1
    • 2
    • 3(current)

Contact information

5142 Venice Blvd, Los Angeles, CA 90019

http://www.sinaiconstruction.net

Service hours

Monday:
8:00 AM - 5:00 PM
Tuesday:
8:00 AM - 5:00 PM
Wednesday:
8:00 AM - 5:00 PM
Thursday:
8:00 AM - 5:00 PM
Friday:
8:00 AM - 5:00 PM

Licensing

Bonded

Insured
State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our State Contractor License Requirements page.

*Contact business to see additional licenses.


Service Categories

Foundation Repair,
Earthquake Retrofitting,
Basement Waterproofing,
Drain Pipe Installation,
Concrete Pouring and Repair,
Kitchen and Bath Remodeling,
Excavating,
Concrete Driveways,
Fountains,
Concrete Leveling

FAQ

Sinai Construction is currently rated 4.9 overall out of 5.

Monday: 8:00 AM - 5:00 PM

Tuesday: 8:00 AM - 5:00 PM

Wednesday: 8:00 AM - 5:00 PM

Thursday: 8:00 AM - 5:00 PM

Friday: 8:00 AM - 5:00 PM

Sinai Construction accepts the following forms of payment: Check,Financing Available,MasterCard,Visa
Yes, Sinai Construction offers free project estimates.
No, Sinai Construction does not offer eco-friendly accreditations.
No, Sinai Construction does not offer a senior discount.
No, Sinai Construction does not offer emergency services.
Yes, Sinai Construction offers warranties.
Sinai Construction offers the following services: Foundation Repair and Replacement, Hillside Foundation Repair and Construction, Seismic / Earthquake Retrofit, Soft Story Retrofit, Foundation Bolting, Cripple Wall Bracing, Shear Transfer Tie Installation, Floor Leveling, Retaining Walls Construction, Slope Failure Repair and Stabilization, Foundation, Basement and Yard Drainage, Foundation and Basement Waterproofing / Damp Proofing, Concrete Crack Repair and General Concrete Work

Contact information

5142 Venice Blvd, Los Angeles, CA 90019

http://www.sinaiconstruction.net

Service hours

Monday:
8:00 AM - 5:00 PM
Tuesday:
8:00 AM - 5:00 PM
Wednesday:
8:00 AM - 5:00 PM
Thursday:
8:00 AM - 5:00 PM
Friday:
8:00 AM - 5:00 PM