BUILT THEBARNS & BARNDOS WAY
Modern steel ADUs designed for luxury, durability, and long-term value. Whether you're creating a guest house, rental unit, backyard retreat, or multigenerational living space, Barns & Barndos delivers turnkey steel ADUs that are faster to build, stronger than wood, and finished to the highest standard.
WHAT IS AN ADU?
An Accessory Dwelling Unit (ADU) is a secondary residential structure built on the same property as an existing home. ADUs are one of the most efficient ways to add:
Barns & Barndos specializes in steel-framed ADUs that combine architectural style with structural performance.
WHY BARNS & BARNDOS ADUS?
Most ADUs are built with traditional wood framing — but steel offers a better solution.
Strength That Outperforms
Steel framing resists warping, rot, termites, and moisture damage.
Faster Build Timelines
Pre-engineered structural systems allow for streamlined fabrication and installation.
Clean, Open Interiors
Clear-span steel design allows for modern layouts without unnecessary load-bearing walls.
Long-Term Value
Steel buildings maintain integrity for decades with minimal maintenance.
Premium Exterior Finishes
All PBR sheeting is coated with a premium PVDF finish and includes a 50-year warranty against cracking and peeling.
Multigenerational Living
Covers the aging-in-place and in-law suite angle, giving families private yet connected living spaces on the same property.
On-Site Storage or Workshop Space
Practical appeal for rural and suburban property owners who need functional outbuildings beyond just living space.
Airbnb or Short-Term Rental Potential
Purpose-built for tourism and hospitality income, with layouts and finishes designed to attract premium guests.
Property Flexibility & Resale Appeal
Future-proof your investment with an adaptable asset that increases property value and expands your options.
DESIGNED FOR REAL LIFE
Our clients build ADUs for a wide range of needs. Whatever the purpose, we design your ADU to match your lifestyle and property.
A PROVEN 5-PHASE BUILD SYSTEM
Barns & Barndos ADU projects follow a clear, structured process from start to finish. This ensures transparency, quality control, and a smooth client experience.
Design & Planning
Custom drafting, exterior design, and layout development.
Engineering
Stamped structural plans for permitting and lender approval.
Fabrication
Your steel package is manufactured with precision and prepared for delivery.
Delivery & Erection
On-site installation of the steel structure and building shell.
Turnkey Finish-Out
Full interior buildout including insulation, plumbing, electrical, HVAC, and finishes.
CUSTOM ADUS ONLY — NO FREE PLANS
We do not distribute floor plans or ADU designs without onboarding. Every Barns & Barndos ADU is a custom-built structure, and our designs are protected intellectual property.
Clients receive full plans and layouts once they enter our design process.
LET'S DESIGN YOUR ADU
ADU pricing depends on size, finish level, site conditions, and local permitting requirements. Most clients choose Barns & Barndos because they want:
If you're ready to explore an ADU on your property, we'll walk you through the options and next steps.
Schedule Your ADU Consultation
RELATED RESOURCES
ADUs share many design principles with small barndominiums. Explore these guides for planning and budgeting ideas.
COMMON QUESTIONS ABOUT ADUS
Size limits vary by county and zoning, but most ADUs range from 400–1,200 sq ft. We’ll help you determine the maximum allowable size for your specific property during the design phase.
We provide fully engineered, stamped plans required for permitting. Local permit submission depends on jurisdiction and project scope, and we’ll guide you through the process.
Yes — we offer full turnkey construction in qualifying markets. That includes insulation, plumbing, electrical, HVAC, and interior finishes.
Absolutely. We design the exterior style, rooflines, colors, and finishes to integrate beautifully with your property and neighborhood.
BUILD AN ADU THAT ADDSVALUE FOR LIFE
Steel ADUs are the future of smart property expansion. Let Barns & Barndos design and build yours with the strength, beauty, and professionalism your investment deserves.