Installers arrived promptly (from out of town) on the date and time scheduled. Working as a well-propared team and using heavy equipment brought with them, the installers cut out a section of cement in the garage, dug out a pre-arranged section of the dirt carefully measured, placed a pre-built steel storm shelter in the hole made, and poured 5'' of cement around the shelter that was then carefully manicured on all sides. After installing the benches, stairs, and shelter opening, the surrounding ground debris was carefully washed away and the dirt and cement removed hauled off to an authorized disposal site. All in less than four hours!

The two men crew arrived on time and immediately when to work. They had me signed a letter stating that if the job exceed four hours then I would pay an additional amount. Once they started working it went pretty smoothly, they had the whole installation done in about 3 1/2 hours and they clean everything up and were finished and gone . I wished they have taken time to do some demonstration using the hand chank in the shelter.

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The entire process went very well. Great communication from the beginning. All staff were professional and friendly. Installation began on time and was completed on time. They cleaned up after themselves. Very happy with my decision to choose Ground Zero for my storm shelter.

Everything went great, but for one thing which was not even their fault. The cement truck was late, causing the job to take longer. I was amazed how quick it to install the shelter.

They did a really good job. It looks nice. They were quick. They're too punctual. They came out at six o'clock in the morning.

After a lot of searching, I decided that Ground Zero seemed to have the best prices and service for the type of shelter I wanted. They were very easy to work with, set up an installation date that was convenient for me, and showed up on time. I thought the price was very reasonable.
The installing crew was professional and answered all my questions. The installation itself went very smoothly. It took only a couple of hours, and they cleaned up the entire area when they were finished. They also demonstrated everything I needed to know on use of the shelter.
I am very plased with this shelter, although I have not had to use it for a tornado yet. No water has leaked into it, it is easy to open and close, and I would recommend Ground Zero to anyone who would like more peace of mind during tornado season.

Personal friend very satisfied.

They were prompt in showing up at specified time. They were able to install a shelter in a garage with a carport attached in a professional manner and cleaned everything after installation. Would highly recommend company.

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They are good. They left a little bit of a mess but they were fine.

I used Angie's List to find them. Their price was phenomenal because I thought that it was going to be considerably more. The price even included the tax which surprised me. The safe room is guaranteed to last an F25 tornado since I am in Oklahoma and we are a tornado alley so it is imperative that people have protection here. They do below-ground and above-ground safe rooms and I just decided to put an above-ground safe room in my garage just because it is easier to access especially since I am 62 so I do not plan to move anywhere. It is easier to get into especially with dogs. Last May when we were devastated by tornadoes out here, there was one storm in particular making a bing on my neighborhood and it was two miles away and I did not have a safe room so I put three dogs in a tiny car and drove 100 miles to escape the thing. I drove and drove before I realized that I was safe because the tornado kept going on the direction that I was going and it was the stupidest thing that I could have done. You do not run from a tornado. It would have been devastating if the tornado had not left and it left before it hit my neighborhood. That is why we have a safe room in my garage now. They were wonderful. They were on time and quick because it did not require an excavation. They did not have to dig a hole in my garage and it is all secured by a whole bunch of huge bolts. It is anchored into my garage and they just did exactly what I wanted them to do. If I am going to need another safe room, I would absolutely use them again.

They were here promptly at 7AM. They were very efficient and did a great job. They were finished in 4 hours!

Punctual and very competent - did a FANTASTIC job. We are very happy!

Punctual, cleaned up afterwards, informative of features and how to use them.

The service providers were on time and very professional, and the unit itself appears to be of good quality. However, the following issues were identified after the job was complete, which led to my luke-warm opinion.

a) The top of the shelter unit has several instances of dents and noticeable scratches which were painted over at an attempt to conceal the damage. After the paint dried, the damage was still noticeable.

b) Damage to concrete edges in the garage was made as a part of digging the hole. No repair was attempted.

c) Damage to concrete areas on the driveway was made as a part of driving the tractor to perform the digging.

d) Concrete/water solution spills remained on the driveway area and many liters spilled on the yard (about 3ft by 3 ft).

Am I pleased that we have a storm shelter in case of a tornado, but the issues above are not appropriate. At a minimum, I would encourage anyone using Ground Zero to inspect the shelter thoroughly, inquire of the service providers how to prevent damage, and not complete payment until any damages are repaired.

The installation crew was outstanding. We have a main water line that crossed diagonally under the floor and the crew was able to do the install without us having to move the water line.
They arrived as scheduled and finished on time. Throughly cleaned the area.

Went to the Okahoma City Home and Garden Show, specifically looking for a storm shelter. Talked to a few companies and decided to go with GZS. Intially, the process started out fine. However, as it got closer to installation day, we grew concerned about the mapping of the utilities, especially our sewer drain and where it connected to the city sewer main. It was understood that GZS would notify the appropriate utility companies and we would obtain the shelter permit; however, there was no mention of locating our sewer line. We were contacted by a GZS customer service representative the Friday before the installation and were asked about the status of the shelter permit. We informed GZS that we could not obtain the permit unless we knew where we were going to install the shelter; we could not provide this information without knowing where the utilities were buried. We asked GZS for help with the sewer issue and were told that they did not possess that information - we should turn to the internet. We could not understand why a company that boasts about how much business they do in our city, could not help us in this matter; we did not believe we were being unreasonable and felt a customer-oriented company would not have a problem with this matter. We pressed the issue and the conversation became heated at times - we were frustrated as customers and the GZS representative was frustrated due the busy time of the year. However, that is no excuse in not providing appropriate problem resolution. It was obvious to us that we needed to speak to a manager or someone in authority to discuss our concerns. We asked to be called back by a manager, but did not receive a call until we called back insisting that a manager return our call. To our surprise, the owner of GZS called to discuss our concerns. However, the owner insisted that everything that could be done by his company was done and implied that we were being unreasonable - we disagree. After a few minutes of back-and-forth with the owner, he finally asked what he and his company could do to make things right. We asked for help with the sewer issue and placement of the shelter. The owner mentioned that he would be happy to help us, but it would cost us an additional $250.00 if had to come to our home to help with deciding where to place the shelter; we could not afford the additional money. To make a long story short, we obtained the permit (based on where we think the shelter should go), the mapping of the utilities was finally accomplished the afternoon before the install and we were on track to have our shelter installed. According to the installation agreement, we were told that our installation window was between 7:00 am and 4:00 pm the day of the install. We did not have a problem with this, but it would have been nice to have received a and quot;courtesyand quot; call first thing in the moring with a tentative arrival time instead of receiving a call twenty minutes before their actual arrival - we are busy people as well and could have used our time more wisely versus sitting around wondering when the installers were going to show up and the reason why this is such an issue is because if for some reason, we were not available when the installers arrived, it would have cost us an additional $250.00 for not being available. Lastly, the installers did not do a very good job cleaning up the mess. We understood that there would be some landscaping damage due to the method of installation (use of a flatbed truck, back hoe, etc.); however, the installers could have done a better job with the excess dirt as a result of digging the hole. The installer mentioned that we would have plenty of dirt left over. We said that we could use it to shore-up the foundation on the front porch, but we assumed that they would at least clean up the dirt in the street and smooth the residual dirt left on the lawn - perhaps, if we were the first installation appointment of the day, they probably would have done a better job. The botton line, we feel that GZS could have been more sympathetic with our concerns and perhaps incorporating useful information in their installation process, unique to the various and quot;majorand quot; cities in Oklahoma, would have saved us much anguish with this process. Thank you.

They were on time fast and did a great job! We are very pleased

Excellent! We hope never to use it, but rest much more secure knowing we have a safe place to go after loosing our home to the May 20th Tornado in Moore last year. Ground Zero was quick, efficient, professional and left a clean workspace. Their product is well designed and affordable. I would recommend them in a heartbeat.

They showed up when they said they would. They built what they said they would build without any extra charges.

Absolutely wonderful experience with the Ground Zero crew who installed my shelter. They were punctual and efficient. The process was quick and they cleaned up after themselves. During the digging, a very small amount of damage was done on my garage. I didn't even know about it until the foreman explained to me how he was going to fix it - he repaired and repainted the area himself that afternoon. In addition to being very professional, the whole crew was kind to my 4 year old son who was very excited about the shelter. They gave him earplugs and showed him everything they were doing. It was a great experience and I recommend Ground Zero to anyone interested in a storm shelter.