20×40 Boat & Trailer Garage
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20×40 Boat & Trailer Garage, wide-door enclosed marine storage.
Wide 10×10 roll-up door fits most pontoons, wakeboats, and bowriders on their tandem trailers, vertical roof certified to 180 mph wind and 65 psf snow.
🔧 Customize your build 9 options affect your price▼
- 800 sq ft fully-enclosed
- 10×10 roll-up door trailer clear
- 12-ft side walls
- 180 mph wind certified
- 65 psf snow load
- 20-year rust warranty
- 14 ga. steel frame
- Concrete-anchor standard
See how 800 sq ft fits your boat + trailer indoor storage.
20 feet wide × 40 feet long. 10×10 roll-up door fits most pontoons, wakeboats, and bowriders on their tandem trailers.
Marine-grade enclosed storage.
Boat + trailer indoor protection. Most 28-foot boats fit on tandem trailers with 4 feet of clearance front/rear.
Build your 20×40 Boat & Trailer Garage 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 Boat & Trailer Garage.
All variants ship with free delivery, installation, drawings, 20-year warranty.
Boat & Trailer Garage spec sheet.
How real buyers use Boat & Trailer Garage.
20×40 Boat & Trailer Garage, what makes it different.
Engineered for your county
Every 20×40 boat & trailer garage 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: $252/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 Boat & Trailer Garage 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 Boat & Trailer Garage 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 Boat & Trailer Garage · Save 10% bundled
These add-ons ship and install with the same crew.
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Boat & Trailer Garage questions, answered.
Will my boat actually fit with the trailer?
20×40 with a 10×10 door handles most boats up to 28 feet long on a tandem trailer (boats with retractable wakeboard towers, most pontoons, all bowriders, jet skis, and small cruisers).
What’s the $12,085 base include?
The boat-spec uplift over the base 20×40 adds the 10×10 roll-up door upgrade (vs the standard 9×8) plus a marine-grade primer on interior trim to resist salt-air corrosion.
Indoor storage = lower insurance premium?
Most boat insurance providers offer 10-25% off for buildings with permanent enclosed structure. Ask your provider for the indoor-storage discount form. Saves $80-$350/year on most policies.
Can I store my fishing gear and outboard inside?
Yes, the 20×40 footprint leaves wall space for a rod rack (12-foot wall typically), outboard storage stand, and a small workbench for tackle work. Add a 30A outlet for an outboard hose rinse pump (+$185).
Concrete pad required?
Yes for boat storage with a 10×10 door. The wider door + higher walls need engineered concrete anchoring (no ground anchors). 4-inch reinforced slab is standard; plan $4800 for the pour on a 20×40 footprint.
Your Boat & Trailer Garage quote takes one minute.
Tell us your zip and the options you want. We’ll send back a same-day, all-in price.
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