Concrete Foundations for Garages and Sheds
We specialize in building concrete foundations for garages and sheds, customized to the specs of your building. Whether it’s a small concrete pad for a single car garage or large concrete foundation for a multiple car garage, we can do it! Our expert crews of garage foundation builders install concrete foundations throughout PA, NJ, NY, MD, DE, VA, WV, CT, and beyond. Start the process of planning for your own garage foundation by requesting a free quote!
*Note: If you apply for a building permit, we will schedule your inspections.
Concrete Foundation Uses
Garage Foundation
The most common use for gravel foundations is to support your garage structurally, while also keeping your shed level.
Pole Barn Foundation
It’s important your pole barn is level and secure. We install gravel and concrete foundations for pole barns.
Shed Foundation
Shed foundations have a host of benefits that include drainage under your shed and a level base, which further strengthens your shed.
How We Install Concrete Foundations
Types of Concrete Foundations We Install
Floating Concrete Pad
Foundation Includes:
- A. Ground Leveled With Skid Loader
- B. 4″ to 5” Clean Stone under Concrete Pad
- C. 4” Thick Concrete (3500 PSI)
Floating Concrete Foundation
Foundation Includes:
- A. Excavation for Foundation
- B. 4’’ Thick Concrete Floor (3500 PSI)
- C. Saw Cut Control Joints to Minimize Cracking
- D. Fiber Mesh OR Wire Mesh in Floor
- E. 6-Mil Moisture Barrier
- F. 4’’ to 5” of Clean Stone Prepped for Concrete
- G. 12” Deep by 10″ Wide Footer
Monolithic Concrete Foundation: (one pour)
Foundation Includes:
- A. Excavation for Foundation
- B. 4’’ Thick Concrete Floor (3500 PSI)
- C . Saw Cut Control Joints to Minimize Cracking
- D . Fiber Mesh OR Wire Mesh in Floor
- E . 6-Mil Moisture Barrier
- F . 4’’ to 5” of Clean Stone Prepped for Concrete
- G . 36” Deep by 12″ Wide Concrete Frost Wall
Block Foundation
Foundation Includes:
- A .Excavation for Foundation
- B .4’’ Thick Concrete Floor (3500 PSI)
- C. Saw Cut Control Joints to Minimize Cracking
- D. Fiber Mesh OR Wire Mesh in Floor
- E. 6-Mil Moisture Barrier
- F. 4’’ to 5” of Clean Stone Prepped for Concrete
- G .8’’ Masonry Block Used to Build up to Required Height
- H. Concrete Footer, 8” Deep x 20” Wide to Required Frost Depth with #4 Rebar
Concrete Pier
- A .Excavation for Piers (Diameter Sizes available, 12” 16” 18” 24”)
- B 30” or 36″ Deep Concrete Piers (3000 PSI)
Note: Concrete Piers are a common foundation for horse barns at each bearing wall.
Some townships may require piers at each corner of your shed.
Reviews From Past Foundation Projects
1000s of homeowners across the Mid-Atlantic United States have trusted us to install their foundations. Here’s feedback we received from several of them:
I originally reached out to them through their website (www.siteprep.com) for a quote on a crushed stone pad for a storage shed in our backyard. To my surprise, within 16 hours, Ed had sent me a detailed PDF quote along with clear instructions on the next steps—how to schedule an appointment, secure a deposit, and even some links to videos showing their installation process.
When I called with a few additional questions, Ed was patient, knowledgeable, and more than willing to walk me through everything. Feeling confident in their professionalism, I submitted my deposit.
Soon after, Sam reached out to schedule the installation. He even had an opening the following week! (I was lucky to call toward the end of the off-season, but it still speaks volumes about their efficiency.) Since I was tied up with work, I opted for an appointment the following month. The next step was to receive a confirmation call from the foreman.
Then, disaster struck.
A series of intense rainstorms hit New York, causing flash floods in my area. The space we had marked off for the shed—and even parts of the shed itself—slid down an embankment at the back of our property. It was a complete mess. I was devastated and, unfortunately, had no choice but to cancel my appointment with Site Prep.
Feeling awful about the sudden cancellation, I left Sam a voicemail apologizing profusely for taking up their time. I let him know that if we were ever able to rebuild the area with a retaining wall, I would love to use their services in the future. Sam called me back almost immediately—not just to say he understood, but to work on processing a refund of my deposit.
Now, I can’t personally speak to their on-site work since we never made it to that stage (though if you check other reviews, you’ll see why I hired them in the first place!). But what I *can* speak to is the quality of the people behind the company. Despite being a business with a large service area, every single person I interacted with was professional, considerate, hardworking, and above all, honest.
It’s rare to find a company that embodies the phrase ‘salt of the earth’, but Site Prep absolutely does. Their communication, integrity, and commitment to customer service make trusting them an easy decision. If you’re considering working with them, I can say with full confidence that you’ll be in excellent hands.
Very happy with the work done
Would recommend
When To Choose a Concrete Foundation
There is one main scenario when you should choose a concrete foundation for your shed: When your shed or garage doesn’t have a pre-built floor.
If you shed or garage comes with a floor built in, then a gravel shed pad is your best choice. A gravel shed pad helps to keep the bottom of your shed dry and it reduces the amount of water that splashes up against the sides of the shed. It is the preferred foundation for sheds with wood floors. We have an entire article detailing the differences between gravel vs. concrete shed bases!
If you purchase a shed without a floor, we’d be happy to install a concrete slab for you. Many larger prefab garages will also need concrete footers and concrete floors installed.
Take a few moments to browse photos of concrete foundation projects that we’ve completed in the past or start planning for your own project by receiving a free quote!
