• licensed earthquake retrofitting company
  • house bolting Los Angels


Southern California and the greater Los Angeles area are known for beautiful weather, sunny beaches, and healthy living. But, Southern California is also one of the foremost seismically active regions in the world, with considerable risk of experiencing a catastrophic earthquake, as well as more frequent, smaller tremors. It’s crucial for property owners in Southern California to prepare for seismic activity by retrofitting their residential and commercial properties. House bolting is a method of earthquake retrofitting that can protect your home before an earthquake hits and causes irreparable damage to life and property. These dangers cannot be understated!

House Bolting Foundation Plate


The foundation plate is installed on the top or the bottom part of the mud sill as part of the house bolting process.

House Bolting Foundation Stud Anchor


Foundation stud anchors are installed to the top floor joist and the bottom part of the foundation.

House Bolting Straps


T and L straps are installed to tie weak wood members together.

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Southern California, specifically the Los Angeles area, is one of the foremost seismically active regions in the world. We live with the considerable risk of a harmful earthquake striking in the next few years.

It’s important for you as a property owner to prepare for the next earthquake. When an earthquake strikes it will be too late, damages can be extensive. House bolting and other earthquake retrofitting services need to happen before an earthquake to protect your property from damage.

Home Slab bolting


Look, as a home owner the safety of your family and the value of your home are top-priority concerns, especially when you live in a seismically active region such as Southern California. Likewise, if you are the owner of a commercial property in this region, the value of your building, as well as the safety of your employees and customers is just as important! Therefore, retrofitting both homes and commercial structures isn’t simply a “good idea” but a necessity required by city codes. With good reason!

The inherent unpredictability of earthquakes makes it vital to retrofit or upgrade structures today, not tomorrow, when it may be too late. The danger is great to both life and property, especially when many insurance policies fail to cover damage resulting from an earthquake without considerable extra costs. Attempting to insure a structure that has not been properly retrofitted can be incredibly expensive.


Weinstein Construction’s professionals are the foremost experts in earthquake retrofitting in the greater Los Angeles area and can handle all of your retrofitting structure needs.  We concentrate on both residential and commercial earthquake retrofitting, as well as house and foundation bolting. If your home was built before 1945, we can virtually guarantee that it is not properly secured to its foundation, and cannot  withstand the force of a powerful earthquake. Moreover, if your home was built prior to or during the 1970s, it still likely doesn’t measure up to seismic retrofitting city codes.

Because each home can have different earthquake retrofitting needs, it is imperative that you invite the experts to have a look at your home and its foundation.  Weinstein Construction’s professionals are the experts you need! Call us today for a free, no-obligation consultation! Let us evaluate your property and help you engineer the best cost-effective solution to your retrofitting needs.

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earthquake retrofit,earthquake retrofit los angeles,diy earthquake retrofit


The first step of earthquake retrofitting is to get a thorough and accurate assessment of the condition of your structure and its foundation. To be effective, earthquake retrofitting must be done on a stable, well-maintained foundation. We consider other variables the planning stage, including:

  • Poor original construction
  • The structure’s physical location (e.g., is it on a hillside?  On a natural depression floor? Is it close to a lake, river, or drainage basin?)
  • The overall condition of the foundation and structure
  • The existence of un-repaired damage from past earthquakes, mudslides, landslides or other ground shifting events (e.g., uneven settling after a heavy rain which induces a ground shift).

After a comprehensive assessment, the next step is drafting a plan to address points of weakness. Your plan will detail needed repairs to update the structure’s existing foundation as well as any newly-discovered structural issues. If we need to obtain city permits for your project, we will go ahead and pull such permits for you.

Next, the work begins in earnest! Weinstein Construction’s skilled professionals work quickly and effectively to retrofit your home or commercial building. You typically don’t have to vacate the premises, and our professionals are very careful to work in an unobtrusive and “clean” manner, leaving no construction debris behind.


In a tilt-up construction project, the building’s walls are poured directly at the job site in large slabs of concrete called “tilt-up panels” or “tilt wall panels”.  These panels are then raised into position around the building’s perimeter forming the exterior walls.

Tilt-up construction is usually used on low-rise industrial buildings, because it lowers construction price. Such structures often struggle to address the lateral movement of earthquake activity and greatly benefit from seismic retrofitting in order to resist collapse during a powerful earthquake. A tilt-up building usually contains a roof composed of “sunshine laminate” connected to concrete walls.

Any concrete tilt-up property engineered before 1976 is at risk of severe damage from even a moderate earthquake. Mandatory Los Angeles City ordinances require tilt-up properties to receive a seismic retrofit.

fixing foundation cracks from the outside
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You may be surprised to learn, the costs for earthquake retrofits are reasonable and quite easily to afford for the vast majority of the home owners. Find out for yourself by inviting us for a free, no-obligation consultation.

Look, the question is: is seismic retrofitting an “option” if your home is in the greater Los Angeles region? We don’t believe so! Homes that can benefit from earthquake retrofitting should get it done. Why take a chance with your valuable property and the priceless lives of your loved ones?

Let the professionals at Weinstein Construction provide you with a free, no-obligation inspection. We promise to provide you with a competitive price estimate and we think you’ll be pleasantly surprised at the cost! You may even qualify for certain EBB grant programs which can assist with your costs.


If you own a home, particularly one that was built more than 50 years ago it’s important for you to have your property’s foundation inspected to make sure it measures up to current safety standards. The foundation of your home may require bolting, which means adding metal bolts and plates to the concrete footing and the framing in the substructure that make up your home’s foundation. Doing this firmly connects the structure to its concrete foundation.

The house bolting process begins with an inspector assessing your home’s foundation, determining the condition and connection needed for your home to remain secure on its foundation. Further work will depend on the foundation’s current bolts (if there are any in place), the circumstance of such bolts, as well as the distance between each bolt. From there, the inspector will decide the right kind of structural attachment required to secure your home to its foundation.

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Commercial Foundation Repair


There are quite a few instruments and techniques used in house bolting. For example, expansion foundation bolts, also referred to as expansion anchor bolts, are the most frequent type of bolts used for earthquake retrofitting.  These bolts are generally used on newer homes.


Epoxy bolts are a type of bolt that may be used. Such bolts are typically used on foundations of older homes, which have less than perfect concrete. These bolts are used to ensure that the foundation continues to be attached during an earthquake’s up-and-down shaking.


Plate washers are often installed to secure bolts, adding greater protection by permitting the sill plate to be securely clamped to the foundation.


If there isn’t sufficient clearance below a home, side plates are used with foundation bolts. Side plates are installed similarly to foundation bolts but need some vertical space below the home.


If your home has wood framed walls located on the perimeter of the structure, sitting attached to the top of the concrete base in a crawl space area, the inspector may suggest cripple wall bracing. Cripple wall bracing attaches structural grade plywood to the wall framing, running alongside the walls of the structure in the crawl space. This provides greater support to the structure’s timber framed base. Additional support prevents damage during the side-to-side shaking of an earthquake, and can prevent the collapse of the first floor.


Yes. Weinstein Construction professionals can build a brand-new basement in your home from scratch. We can custom design the basement so that that it fits your specific needs. Your new basement can literally be used for anything, from storage space to a home theater or gym. Don’t let the extra space in your home go to waste – call Weinstein Construction today!
Water can leak into your basement from a variety of places, for example, gutters, downspouts, leaking pipes, or improper grading around the foundation. If there is any sort of entry way for water to come into your basement, be sure that water will find it! While not all of the entrances into your basement can be closed off, Weinstein Construction professionals can always find a way to direct water away from your basement. If you want to understand how water is seeping into your basement, give the professionals at Weinstein Construction a call – we will come to your home for a free, no-obligation evaluation and consultation!
Basement repairs are actually more affordable than you may think. Moreover, fixing a faulty basement is much cheaper than the cost of repairing the damages that can happen by not having the basement fixed. It has been our experience that damages caused from basements can be very costly because they can wind up causing damage to the entire structure. The professionals at Weinstein Construction will work with you to understand your basement issues and figure out the best and most affordable methods available for repairing your basement.
Your basement repair may, or may not require a permit. Moreover, different basement jobs may require different permits. It really all depends on the service you need. Rest assured that Weinstein Construction will always make sure the correct permits are pulled and that everything is done up to code. We can take care of the whole permitting process for you, unless you wish to do so on your own. Our goal is always to provide you with the best possible service with the least amount of cost or hassle.
Most people in Southern California do not use their basement on a daily basis. This fact can make it difficult for a home owner to tell if a basement needs repair (unless of course there are obvious problems!). The difficulty is that by the time a home owner spots a basement problem, it may be too late for a quick, inexpensive fix. The right thing to do is to prevent basement issues from happening in the first place! Please be proactive and go down to your basement today and have a look around to see if you can spot any issues. For example, can you see any water or dampness where it should not be? Can you spot any leaky pipes, water seeping in from the walls or ceilings, a bad or musty smell? If you do, you must fix these issues immediately. If you do not notice any of these problems, this does not mean that there are no problems in your basement. Many problems, especially when they first appear, are not always observable to home owners. However, Weinstein Construction professionals are very experienced in spotting issues and will be happy to come to your home for a free, no-obligation inspection of your basement. If you have a problem basement, we will be able to find the issues and offer you the right mitigation strategies that can not only fix the problem today, but help ensure you don’t have costly repairs in the future.


Jack Dunbar Weinstein Construction Review 2

Weinstein Construction redid my foundation and retaining wall and I’m very happy with the work!

Mr. Allen
Donald Borg Weinstein Construction Review

We had our basement retrofitted. Very courteous to us, very attentive. I was very impressed with the people who came to do the job. They were polite, well dressed, and really seemed to know what they were doing. We feel a lot safer now than we would have otherwise.

Donald Borg

We had used Weinstein to earthquake retrofit our house. First, my intention was to do it myself, but we got a very nice sales rep over and he went through the whole procedure and by putting a thought into I concluded that it was not worth it for me to spend 14 days under the house. They came out, a top professional crew, they did it in a day, and we really loved what they did.

Yorkin Schwar

We are pleased with the results. The people were on time, they were neat, clean, and even the “big boss” was very nice and accommodating, so we’re happy with the services.

Tom and Judy Fogle

I was very happy. Very clean job. Very satisfied, and I recommend it to everybody.

Eddie Levin

We had our house retrofitted. Immediately we noticed the stability of it, even when we walked the house. Now it’s so much better and it’s stabilized, we’re very confident. It went very well and we’re very pleased.

The Reverend Jess Palmer
rabii lipsker

They did a great job, they were on time, clean, and the price was right. I recommend you do the same.

Rabbi Lipskier

House was built in 1933. They did the right job, they did a very good job and we’re very happy with the results. I recommend them.

Michael Ingbar