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5/520×40 Garage + Office, finished workspace at the back.
Two parking bays up front with a 20×16 finished office at the back, drywalled, climate-pre-wired, ready for a desk and a window AC. Free delivery and install.
🔧 Customize your build 9 options affect your price▼
- 800 sq ft total · 480 sq ft garage
- 320 sq ft finished office
- Drywall ready 5/8 Type-X
- HVAC rough-in mini-split
- 200A entrance panel
- 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 + HVAC mini-split rough-in + 200A entrance. Move-in-ready with finish trades in 2-3 weeks.
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: $284/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 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 + wall sheeting: 29-gauge standard, 26-gauge upgrade.
Do you deliver and install in my state?
Free delivery and installation in all 48 continental states. Hawaii and Alaska require custom freight quotes.
What's the typical lead time?
Standard: 3 to 5 weeks from order to install. Rush delivery available for an additional $345.
Can I finance without a credit check?
Yes — rent-to-own through TimePayment requires zero credit pull. Just first month's payment to activate.
What's covered under the 20-year warranty?
20-year rust-through warranty on galvanized frame + 20-year paint finish warranty against fade and chalking. 90-day workmanship warranty on installation.
What real 20×40 Garage + Office buyers say.
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Talk to a real metal-building specialist.
Our team has installed 42,000+ buildings. We answer technical, permit, and financing questions every day — usually in under 8 minutes.
Complete your Garage + Office · Save 10% bundled
These add-ons ship and install with the same crew.
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Garage + Office questions, answered.
What's included in the $13,650 office base?
Office spec adds a stud-framed 20×16 office partition wall, 5/8 Type-X drywall pre-cut, R-19 ceiling insulation, an HVAC rough-in for a mini-split, a 200A electrical entrance, 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.
Can I add a bathroom?
Yes, the 20×16 office is plumbing-stub-ready (drain + supply roughed in to one wall). A 3-piece bath finish-out runs $6,000–$11,000 separately.
How long until I can move in?
Building goes up in 1 to 2 days. Drywall finish + paint + flooring + HVAC install adds 2 to 3 weeks of 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.
