Understanding the full cost of your garage upfront helps prevent surprises. Knowing what’s included in the kit, potential add-ons, and warranty coverage helps you plan your investment confidently.
This building is priced open-ended (no front wall, no back wall, no doors, no accessories).
Looking for a different size? Click the button to get a custom quote or call for more information.
Design and build a one-car garage that fits your space, budget, and local building requirements. With prefabricated DIY construction, you’ll reduce build time and labor costs while getting a durable structure backed by a 50-year warranty.
Sales and use tax are not included in price. Buildings are designed using standard keyway foundation and SteelMaster does not provide installation services. All projects are sold as DIY.
*Exclusions apply; see warranty for details.
*Arches are priced in standard 22-gauge and may not meet your snow and/or wind load requirements. Buildings can be designed in thicker steel to meet higher wind and heavier snow loads. Consult with your building specialist for further details.
Every aspect of your Quonset can be designed to fit your needs. SteelMaster offers add-ons, or you can locally source these building options.
Choose between four models, depending on the look or engineering standards you want. When you work with SteelMaster, you get access to experienced building engineers who are certified in all 50 states to help you select the right Quonset model for you.
Not sure if a Quonset one-car garage is for you? Learn more about arch building kits.
Planning a one-car garage project? SteelMaster’s DIY one-car garage kits make it simple to create a durable, space-efficient structure designed for everyday use. From vehicle storage to added workspace, these garages can be customized to match your property and local requirements. Learn more about:
Before building, it’s important to ensure your one-car garage meets all local codes and engineering standards. Understanding permits, load requirements, and zoning rules helps your project start smoothly and stay compliant.
Yes. Each one-car garage is engineered to comply with IBC and ASCE-7 building standards and is designed to account for your local wind, snow, and seismic loads. However, final compliance depends on your specific location, so make sure to do your due diligence with your city or county to verify local zoning rules, required permits, and HOA rules if applicable.
Yes. Every building comes with complimentary state-stamped engineer-stamped drawings prepared by a licensed professional engineer. These drawings are typically required by local building departments and are suitable for permit submission, unlike generic CAD drawings that are not reviewed or approved by an engineer.
We have supplied one-car garages in all 50 states. Each state is supported by a designated, state-certified building specialist who understands local climate conditions and geographic factors to help ensure your garage project goes smoothly.
Our standard one-car garages use a steel thickness of 22 gauge, which is substantially thicker than the industry standard of 26 gauge. The steel is a premium, high-strength material with an 80,000 PSI yield strength and grade 80. Heavier gauges may be specified when required to meet local building codes or snow/wind load requirements.
Understanding the full cost of your garage upfront helps prevent surprises. Knowing what’s included in the kit, potential add-ons, and warranty coverage helps you plan your investment confidently.
The base kit includes the components for the complete structural shell of the garage:
Additional costs may include:
Optional accessories can be added to your order or sourced locally, depending on your needs:
The garage is backed by a 50-year warranty (the longest in the industry) that covers rust perforation of the steel, providing protection and peace of mind for decades after purchase.
How much does it cost to build a steel garage? When calculating the cost of your ideal garage, it’s important to consider several important factors.
How you plan to use your one-car garage impacts design requirements, door sizing, and optional upgrades such as insulation or ventilation.
Garage width, length, and height directly affect material quantities and overall cost.
Your build location determines engineering needs based on local snow, wind, and seismic loads, as well as shipping considerations.
Options like doors, windows, insulation, ventilation, and interior upgrades can be added to customize your garage and adjust pricing.
Whether you plan to assemble the garage yourself or hire professional installation will influence total project cost.
Choosing the right dimensions and configuration ensures your garage fits your vehicle and storage needs. Planning for current and future use helps you select the ideal size, layout, and features.
Standard one-car garages are available in multiple sizes.
With proper sizing, a one-car garage can easily accommodate a vehicle along with extra storage or a small work area. Interior layouts are flexible since there are no interior support columns.
Yes. Doors, vents, and framed window openings can be included in your garage design. Garage doors are the most common add-on for one-car garages.
The type and number of doors depend on your garage width: for smaller widths like 16 feet, a single garage door is typical, while a 20-foot-wide garage can accommodate both a garage door and a walk-in entry door.
Our building specialists can help you determine the best door configuration and door sizes for your building’s width.
Yes. The structure can be lengthened later by adding additional arches in increments of two feet, allowing the garage to grow if you end up needing more room.
What foundation type works best for this garage style?
A concrete slab is the most common foundation. In some situations, alternative foundations may be acceptable depending on local code and site conditions.
Knowing what’s involved in assembly helps you plan labor, time, and tools. Familiarity with the construction process, available guidance, and required equipment makes installation smoother and faster.
The amount of help needed depends on the garage size and your comfort level with construction. Many customers choose to assemble their garage themselves to save on labor costs, while others who are less experienced with construction hire a contractor.
Installation time varies, but a small one-car garage can often be assembled in a matter of days. A team of at least three people can raise six to eight arches per day. Since each section is 2 feet in length, a 22-foot-long garage (11 arches) can typically be assembled in one to two days, depending on the garage’s width and height.
Yes. Each garage includes a construction manual, and our customer service team is available to answer technical questions and walk you through the assembly process if needed. We also have step-by-step videos on our YouTube channel that provide an overview of the construction process.
Assembly requires basic tools that can be found at your local hardware store.
At SteelMaster, you have a dedicated team supporting your project from start to finish. From your initial inquiry through finished product, our building specialists, after-market experts, and customer service team are here to help you along the way.
In many cases, your building can ship in as little as one month after your order is placed.*
*Timeline applies to clients in the continental United States. Orders must be placed with a small deposit upfront with the remaining balance due upon delivery. Blueprint/Foundation Delivery plans typically take 2-4 weeks, Delivery typically takes 1-3 months. Ask your building specialist for details.
A durable garage is a long-term investment. Learning how to protect the steel, maintain the structure, and prepare for weather ensures your garage lasts for decades.
When properly installed, the garage is designed to last 50 years or longer, significantly outlasting many traditional wood-framed structures.
The steel is protected by a thick, corrosion-resistant Galvalume Plus coating that shields it from UV exposure and harsh weather without additional treatment.
No regular painting or sealing is required. Routine visual inspections after severe weather are typically all that’s needed.
The garage is engineered to withstand heavy snow loads and high wind speeds, making it suitable for use in demanding climates when designed for local conditions.
If you plan to use your garage year-round or as a workspace, comfort matters. Considering insulation, ventilation, and options for heating or cooling keeps the interior functional in any season.
Insulation is optional and usually only necessary if the garage will be heated, cooled, or used as a workspace. For basic vehicle storage, insulation is often unnecessary.
Condensation can be managed through proper ventilation, vapor barriers, or insulation if needed. Planning for airflow during the design phase helps minimize moisture buildup.
Yes. The garage can be insulated and finished later to support heating or cooling systems if your use changes over time.
Choosing a trusted supplier protects your investment and your peace of mind. Working with a company that provides expert guidance, responsive customer service, and proven results ensures your garage project goes smoothly.
We have over 40 years of experience supplying steel building solutions to customers nationwide and internationally.
Yes. We have hundreds of verified customer reviews covering a wide range of building applications, including garages.
Customer support is handled in-house by knowledgeable specialists who can assist with questions before, during, and after installation.
When your garage is delivered, the driver will provide a bill of lading that lists every item included in your order. It’s recommended to check this list both while unloading and afterward to ensure everything has been received.
In the rare event that something is missing, contact SteelMaster right away. Our in-house team is committed to resolving any issues quickly and ensuring your project stays on track.
We want you to be satisfied with your purchase. You can view our full return and refund policy here.