How much does a 120 sq ft backyard office cost?

Our 120 sq ft backyard office frame kits start at $7,200. Fully turnkey finished studios start at $26,999.

Do I need a permit for a backyard studio in California?

In many California cities, accessory structures under 120 sq ft do not require a building permit. We recommend checking with your local planning department for specific requirements.

What is included in a turnkey ADU project?

Turnkey projects include everything from architectural design and permits to full construction, electrical, plumbing, and interior finishing.

Do you only build with Light Gauge Steel?

While LGS is our specialty, we also work with other materials depending on project requirements and client preferences.

How long does it take to complete a project?

It depends on the size and complexity, but thanks to pre-engineered steel components, most builds are completed 30–40% faster than traditional construction.

Do you handle permits and inspections?

Yes. We take care of all necessary city permits and coordinate inspections, so you don't have to worry about the paperwork.

Is Light Gauge Steel more expensive than wood?

The initial cost can be slightly higher, but LGS offers lower maintenance, longer lifespan, and reduced insurance costs — making it more cost-effective long-term.

Can you help with design?

Absolutely. Our in-house designers and architects create custom plans to match your vision and comply with local building codes.

Do you offer free consultations?

Yes, we provide free initial consultations to discuss your project, budget, and options.

Steel Frame Kits | Backyard Offices, Garages, ADUs

Our Kits

Choose Your Frame Kit

120 sq ft prefabricated backyard office frame kit

SALE

Backyard Offices

Office — 120 sq ft LGS Frame Kit

$7,500 $7,200

Frame kit only. No permit required.

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Turnkey 120 sq ft modular backyard office build

POPULAR

Backyard Offices

120 sq ft Backyard Office — Turnkey

$26,999

Fully finished. No permit required.

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Modular LGS gym studio interior with fitness equipment

Studios

Gym Studio — 120 sq ft LGS Frame

$26,999

Perfect for home gym or yoga studio.

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Saunas / Bath Houses

Modern Sauna with Lounge Room — 160 sq ft

$34,000

LGS frame kit. Assembly included upon request.

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Garages

Modern 2-Car Garage — 308 sq ft

$68,000

Industrial-grade cold-formed steel construction. Heavy-duty.

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450 sq ft turnkey ADU or backyard office

PREMIUM

ADU / Turnkey

Turnkey ADU or Backyard Office — 450 sq ft

$199,050

Full-size living space. Everything included.

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Customization

Want to Customize Your Kit?

Whether you're building a home office, gym, or garage — we can tailor a Light Gauge Steel frame kit to your exact needs.

Can I order a custom size frame kit?

Yes! Just contact us with your desired dimensions and usage — we'll prepare a personalized quote and 3D concept.

Do you offer assembly services?

Absolutely. If you prefer a hassle-free experience, our licensed team can deliver and assemble your structure on-site.

What's included in each kit?

Each kit includes galvanized LGS framing, fasteners, drawings, and assembly instructions.

Do I need a foundation?

Yes. All our LGSF buildings require a solid, level foundation — typically a concrete slab. We can help design and build it upon request.

Can you handle finishing (insulation, drywall, siding)?

Yes. Our team can handle insulation, drywall, siding, windows, doors, flooring, and more. Just ask us for a full-service quote.

Do I need a permit?

If your structure is under 120 sq ft and not intended for habitation (like a storage shed or small workshop), you usually do not need a permit in most California cities. For anything larger, a permit is required. We can assist with the permitting process.

Prefabricated Steel Frame Kits
& Backyard Studios