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5/520×40 Garage + Office, finished workspace at the back.
Two parking bays up front with a 20×16 office at the back, stud-framed, insulated, and drywall-ready for your own finish. Free delivery and install.
🔧 Customize your build 9 options affect your price▼
- 800 sq ft total · 480 sq ft garage
- 320 sq ft office partition
- Drywall ready 5/8 Type-X
- Engineered wind + snow rated
- 20-year rust-through warranty
- 2 office windows 36×48
- R-19 ceiling insulation
- Garage door + walk-in
See how 800 sq ft fits your garage + office combo.
20 feet wide × 40 feet long. Front parking bay + rear 20×16 finished office partition.
Drywall-ready office at rear.
Stud-framed office partition + drywall pre-cut, ready for your own finish trades.
Build your 20×40 Garage + Office in 3D.
Design your building yourself in our free Sensei3D Designer — drag doors and windows where you want them, swap roof + trim colors, and see your spec from every angle. Save your design and email it to yourself for later.
- Drag-and-drop doors, windows, walk-ins anywhere on the building
- 16 colors applied live to roof, walls, and trim — mix & match
- Interior + exterior views of your spec, with measurements
- Save your design and share it with your contractor or family
- Auto-syncs to quote — what you build is what we price
Everything in your Garage + Office.
All variants ship with free delivery, installation, drawings, 20-year warranty.
Garage + Office spec sheet.
How real buyers use Garage + Office.
20×40 Garage + Office — what makes it different.
Engineered for your county
Every 20×40 garage + office is fabricated from American-rolled galvanized steel and engineered against the exact wind and snow loads your jurisdiction requires.
- Standard: 140 mph wind / 35 psf snow
- 12-ga upgrade: 180 mph / 65 psf
- Permit drawings stamped and emailed free
Construction details
The same materials commercial fabricators use — not residential-grade. Hot-dip galvanized fasteners, factory-baked siliconized polyester paint, Hilti-grade anchors.
- Frame: 14-ga (12-ga upgrade) galvanized tubing
- Panels: 29-ga G-90 (26-ga upgrade)
- Fasteners: #14 self-drilling with EPDM washer
Free delivery & install — really free
Regional-route delivery plus 1–2 day on-site installation by a certified crew, bundled into your headline price. No hidden unloading fees, fuel surcharges, or site-prep charges.
- $0 deposit · pay only after walkthrough sign-off
- 3–5 week lead time on regional routes
- All 48 states · rush option available
Warranty & lifespan
Engineered for a 50-year service life with industry-leading warranties on every wear surface.
- 20-yr rust-through warranty on frame & panels
- 40-yr paint warranty against fading + chalking
- 1-yr craftsmanship on installation
$0-down financing
Three financing paths to fit any credit situation. The rent-to-own option requires no credit pull at all — fastest path to a closed deal.
- RTO: $381/mo, no credit check, 36–60 mo
- Financing: 0% promo APR · 84 mo term
- Cash discount: 4% on $10K+ orders
Why 20×40?
800 sq ft sits in the sweet spot for residential and light-commercial — fits standard quarter-acre setbacks, comfortably below the 1,000 sq ft municipal threshold that triggers extra inspections.
- 20′ × 40′ footprint with 800 sq ft interior
- Permit-friendly in 96% of US counties
- Resale ROI $6,400–$9,600 added home value
Common questions from Garage + Office shoppers.
The questions our team hears every week. Click any to expand the short answer.
How thick is the steel on a Steel and Stud 20×40 metal building?
Standard frame: 14-gauge (1.5 mm) galvanized tubing. Optional 12-gauge upgrade (2.5 mm) for high-wind/snow zones. Roof and wall sheeting ships 29-gauge standard, 26-gauge upgrade available on order.
Does Steel and Stud deliver and install in my state?
Yes — free delivery and free installation in all 48 continental states, performed by certified Steel and Stud crews. Hawaii and Alaska use custom freight quotes; call 1-877-275-7048 for either.
What's the typical lead time for a 20×40 building?
Standard: 3–5 weeks from order confirmation to install completion. Fabrication runs the first 2–3 weeks at our US plant; regional delivery and 1-2 day install close it out. Rush builds available for $345.
Can I finance a Steel and Stud building without a credit check?
Yes — Steel and Stud's rent-to-own partner does not pull credit. Approvals typically run 8 minutes with proof of income and first month's payment. 36–60 month terms, no early-payoff penalty.
What's covered under the 20-year warranty?
Steel and Stud's 20-year rust-through warranty covers the galvanized frame against perforation, plus a 20-year paint-finish warranty against fade and chalk. Workmanship on the install is warrantied for 1 year. Warranty transfers to the next owner on resale.
What real 20×40 Garage + Office buyers say.
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Talk to a real metal-building specialist.
Our team has installed 2,500+ buildings. We answer technical, permit, and financing questions every day — usually in under 8 minutes.
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Garage + Office questions, answered.
What's included in the $18,300 office base?
Office spec adds a stud-framed 20×16 office partition wall, 5/8 Type-X drywall pre-cut, R-19 ceiling insulation, and two 36×48 office windows.
Is the office finishable to residential code?
As-built it meets commercial accessory standards. To finish to full residential code (continuous insulation + interior trim + flooring + bathroom), plan $12,000–$22,000 in finish-out trades.
Do I need a separate permit?
One accessory building permit covers the structure. Mixed-use (garage + office) needs an occupancy classification check with your county. We provide stamped drawings for both classifications.
What colors and warranty are included?
One standard color on roof, walls, and trim is included at no extra cost, with the full color range available. Panels carry a 20-year rust-through warranty.
How long until I can move in?
Building goes up in 1 to 2 days. Drywall finish + paint + flooring adds 2 to 3 weeks of owner-supplied trades work for a basic move-in-ready office.
Your Garage + Office quote takes one minute.
Tell us your zip and the options you want. We'll send back a same-day, all-in price.
