Skip to main content Skip to footer 
Butler Building
Accessory Dwelling unit
Butler accessory dwelling projects featuring durable, efficient, and versatile steel building solutions for guest houses, secondary residences, and multi use living spaces. See how Butler buildings combine lasting performance, design flexibility, and low maintenance for modern residential applications.
The Most Trusted Name in Accessory Dwelling Unit
Butler Building Advantages
10 Things to Know before you buyFind the right size for your Building
Not sure what size you need? Explore our recommended building dimensions based on your intended use and customize your design with the Butler Building Designer.
Building Sizes We Recommend
Common sizes for popular uses. Need Something Different? We can design it around your requirements. Explore our most popular Butler Building Dimensions
Butler Building Designer
Explore building dimensions, layouts, roof and wall options, and more with our interactive 3D Building Designer.
Ready to get a Price
Tell us about your project and our team will provide a custom quote based on your needs, location, and building specifications.
Built for Everyday Versatility
Accessory buildings provide flexible space for storage, workshops, equipment, inventory, or operational support. Butler systems are engineered to adapt to your needs while delivering the strength and durability expected from a permanent steel building.
Maximize Your Property
Add valuable, functional space without the limitations of traditional construction. Whether expanding an existing facility or creating a standalone structure, accessory buildings help you make better use of your property while supporting future growth.
Custom Configurations Available
Every operation has unique space requirements. Butler accessory buildings can be customized with overhead doors, walk doors, insulation, windows, partitions, and a variety of exterior finishes to create a building that works exactly the way you need.
Low Maintenance Performance
Built with premium steel components and durable factory-applied finishes, Butler accessory buildings are designed to resist weather, corrosion, and everyday wear. That means less maintenance, lower ownership costs, and dependable performance for years to come.
Engineered for Lasting Strength
Every Butler accessory building is factory engineered to meet local building codes, wind loads, and snow loads. The result is a dependable structure designed to protect your equipment, materials, and investments in every season.
Factory Direct Butler Quality
As an authorized Butler Builder®, we provide genuine Butler building systems backed by decades of proven engineering and manufacturing excellence. You receive factory-quality materials, expert design support, and a building that’s built to perform for the long haul.
Butler-Cote Metal Panel Colors
Butler Cote colors are engineered for long term performance, with exceptional fade and chalk resistance that outlasts conventional paint systems. Cool Colors meet Title 24 energy standards and support LEED certification, giving your building proven longevity and a finish that protects your investment for decades.
Gable trim, eave trim, gutter and downspouts included.
Cool Solar White
Cool Igloo White
Cool Ivory White
Cool Birch White
Cool Shell Gray
Cool Country Wheat
Cool Desert Beige
Cool Gray Stone
Cool Emerald Green
Cool Ocean Blue
Cool Majestic Blue
Cool Brick Red
Cool Harvest
Cool Onyx Black
Cool Marsh Green
Cool Palm Green
Cool Solar White
Cool Birch White
Cool Shell Gray
Cool Country Wheat
Cool Emerald Green
Cool Gray Stone
Cool Majestic Blue
Cool Marsh Green
Cool Ocean Blue
Not formulated for exterior use.
Light Gray
Igloo White
Interior White
Cool Marsh Green
Selected color
Schedule a Butler Meeting
Sometimes the fastest way to get an answer is to ask someone who knows Butler Buildings inside and out. If you still have questions after reviewing our recommended sizes, 3D Design Guide, or color charts, the Butler Metal Buildings team is here to walk through the details with you directly — no scripts, no pressure to buy.
Warranties and Service
Building System:
Butler Pre-Engineered Metal Building (PEMB)
Structural Framing:
Precision-engineered steel framing designed around project-specific loads, dimensions, and code requirements
Roof Systems:
Butler MR-24®, Butlerib® II, and VSR II™ roof system options, depending on project design and performance requirements
Wall Systems
Butlerib® II, StylWall® II, Shadowall™, ThermaWall™, and TextureWall™ options
Insulation Systems:
Butler TBS™ and ThermaLiner™ insulation systems, with insulated wall-panel options also available
Architectural Finishes:
Multiple roof and wall profiles, colors, and exterior finish options
Building Configuration:
Customizable spans, heights, roof configurations, openings, and interior layouts
Builder Support:
Constructed through Butler’s authorized Butler Builder® Network
An Accessory Dwelling Unit needs to feel like a comfortable home while delivering the durability and performance expected from a permanent structure. Butler’s integrated building systems provide a flexible foundation for creating residential spaces with customized dimensions, architectural finishes, insulation, roofing, and wall systems.
Unlike a basic metal outbuilding, a Butler system can be adapted to architectural requirements beyond the traditional “metal box.” Butler’s product portfolio includes concealed-fastener wall systems, insulated wall panels, architectural roof systems, and exterior finish options that can help an ADU complement the primary residence and surrounding property.
The Butler approach also integrates the structural frame, roof, and wall systems into one engineered solution. This coordination helps create a more predictable construction process while giving designers greater flexibility to develop a space around the intended residential use.
Comfortable, Flexible Living Space
An ADU can serve as a guest residence, space for extended family, a private living area, or another independent residential space. Butler’s customizable building systems allow the structure to be planned around the desired room arrangement, dimensions, openings, and architectural requirements.
Designed for Long-Term Performance
Steel construction provides a durable structural solution for an ADU. Butler systems are precision-engineered and designed for lasting performance, while its integrated roof and wall systems are developed to provide dependable weather protection.
Improved Thermal Performance
Comfort is an important consideration for a residential building. Butler offers multiple insulation solutions, including TBS™ and ThermaLiner™, as well as insulated wall systems such as ThermaWall™ and TextureWall™. These systems are designed to improve thermal performance and reduce heat transfer through the building envelope.
Residential-Ready Appearance
An ADU does not have to look like a conventional industrial metal building. Butler offers architectural wall systems and roof options designed to provide different visual profiles, finishes, and levels of architectural refinement.
Efficient Construction
Butler’s pre-engineered components are fabricated off-site and designed for efficient field assembly. Factory-precise, pre-punched components help streamline installation and improve consistency during construction. Butler states that applicable PEMB projects can achieve installation timelines up to 50% faster than conventional construction.
Potential for Future Expansion
If additional space may be needed later, the building can be engineered with future expansion in mind. Planning for expansion during the original design can make future additions more straightforward while maintaining the integrity of the original structure.
Can a Butler metal building be used for an Accessory Dwelling Unit?
A Butler building system can be designed for a wide range of applications, but whether a specific ADU project is permitted depends on local zoning, residential building codes, site conditions, and applicable regulations. Butler and its authorized Builder Network can work with the project team to develop a building around the applicable structural and performance requirements.
Create an ADU Around the Way You Live
An ADU should function like a home, which means its design needs to accommodate both everyday living and the character of the property. Butler systems provide flexibility in building dimensions, roof configurations, exterior wall systems, insulation, finishes, and openings.
For the exterior, owners can select from multiple Butler roof and wall systems, colors, and architectural finishes. Options such as StylWall® II, TextureWall™, ThermaWall™, and VSR II™ can provide a more residential or architectural appearance while maintaining the performance advantages of a metal building system.
Interior comfort can also be addressed through Butler’s insulation systems, while windows, doors, skylights, gutters, downspouts, and other accessories can be coordinated with the overall building design. The result is a customized structure designed around the ADU’s intended use, site, appearance, and performance requirements.
Trusted By Companies Across the Country
From contractors to national brands, these companies build with Butler.
Frequently Asked Questions
Still deciding if a Butler building is right for your project? Here’s what most builders ask us before they get started.
Still have questions?
Talk to a real person. Call our Pro Desk Expert Line or request a callback.
What makes a Butler building different from other metal buildings?
Butler has been engineering steel buildings for over 125 years, and AM Star is an authorized Butler distributor, not a reseller of generic components. Every building you get through us uses genuine Butler engineered parts, backed by Butler’s manufacturing standards.
Can I customize the size and layout of my building?
Yes. Butler buildings are engineered to your exact specifications, size, use, and site requirements, whether that’s a small workshop or a large industrial facility. Our team works with you from initial design through structural engineering to make sure it fits your project.
How much does a Butler building cost?
Pricing depends on size, building type, durability grade, and site conditions, so there’s no single number that fits every project. Request a quote and we’ll get you accurate pricing fast, tailored to your specific building.
How long does the process take, from quote to finished building?
Timelines vary by project scope and current fabrication schedules. Once you request a quote, we’ll give you a realistic timeframe based on your specific building and location.
Do you handle engineering and permitting?
Yes. Every Butler building is engineered to meet local codes and structural requirements, with stamped drawings provided for permitting, backed by Butler’s manufacturing standards.
What's the difference between a Butler building and a barndominium?
A barndominium is one type of building you can build using Butler’s steel building system, combining residential living space with a metal building structure. It uses the same engineered components and durability standards as our other building types.
What if I'm not building new, I just need parts or repairs?
We also supply genuine Butler parts and components for repairs, replacements, or expansions, no need to order a full building. Browse our parts catalog or contact us directly.
How do I get started?
Request a quote and tell us about your project, building type, size, and timeline. We’ll follow up with accurate pricing and next steps, no pressure, no runaround.
Price my Butler Building
Email:
Availability:
Available 7 Days a Week from 8am to 5pm and Evenings by Appointment.
Request a New Butler Building Quote
Tell us about your project and we'll put together accurate pricing on a genuine factory-spec Butler building. Every quote is engineer-reviewed and tailored to your building type, size, and timeline.
Download the Spec Sheet
Fill in the fields below to instantly download your spec sheet. A backup copy will also be sent to your email.
