20×30 Metal Building
900 sq ft — triple wide carport for vehicles or equipment
14 Gauge
Local Certification Available
No card charged online · Specialist calls within 1 business day · 10–20% deposit by phone
20×30 Metal Building Specs, Dimensions & Custom Options
The 600 sq ft 20×30 steel building footprint is a versatile mid-size prefab metal building option for 2-car garages, workshops, equipment storage, RV covers, farm use, and light-commercial layouts. Configure every spec below in our free 3D builder to match your exact use case, budget, and local building codes.
| Building Footprint | 20′ Wide × 30′ Longwith leg heights from 8′ to 20′ |
|---|---|
| Total Square Footage | 600 square feetof usable interior space |
| Building Configurations | Metal carport, fully enclosed garage, metal barn, RV cover, workshop, commercial buildingAll Available |
| Enclosure Options | Open carport, partially enclosed, fully enclosed (4 walls), or custom side configurations |
| Roof Styles | Regular Roof (rounded corners), A-Frame Horizontal / Boxed Eave, or Vertical Roof (recommended for snow and rain runoff) |
| Roof Pitch Options | Standard 3:12 pitch, with 4:12 and 5:12 pitch upgrades available for heavy snow regions |
| Frame Gauge | 14-gauge galvanized steel tubing standard, 12-gauge upgrade available (33% thicker, longer warranty) |
| Roof & Wall Panels | 29-gauge sheet metal standard, 26-gauge upgrade available |
| Door Options | Roll-up garage doors from 6’x6′ up to 14’x14′, 36″ walk-in doors, framed openings, hydraulic and rapid-entry doors for commercial |
| Window Options | 30″x30″ standard, 36″x36″ or custom sizes, with insulated glazing options |
| Color Options | 17 colors for roof, walls, and trim independently: Barn Red, Beige, Black, Brown, Burgundy, Burnished Slate, Clay, Galvalume, Green, Patriot Red, Pewter Gray, Quaker Gray, Rawhide Tan, Royal Blue, Sandstone, Slate Blue, White |
| Wind Rating | 115 MPH standard, certified up to 170+ MPH for hurricane and coastal zones |
| Snow Load | 35 PSF standard, certified up to 65+ PSF for heavy snow regions |
| Certification | Available for any 20×30 configuration with engineered, stamped drawings that meet IBC, IRC, NEC, IFGC, IECC, and IMC codes |
| Anchoring | Concrete anchors, asphalt anchors, mobile home anchors, or auger anchors for ground installation, all included |
| Free Delivery | Included on every orderin the 48 continental US states |
| Free Installation | Included on all tubular-frame 20×30 buildings (most carports, garages, barns, RV covers). Custom red-iron commercial builds may carry an install fee. |
| Lead Time | 4 to 6 weeks from order confirmation, schedule fills fast in peak season |
| Installation Time | 1 to 2 days for most 20×30 configurations |
| Warranty | 20-year rust-through warranty plus 90-day workmanship guarantee |
Limited + Product Pledge
Paint Finish
Workmanship Guarantee
Workmanship Guarantee
12 Popular 20×30 Metal Building Uses (600 Sq Ft Layouts)
A 600 square foot prefab metal building gives you practical space for vehicles, storage, equipment, and small-business layouts. Filter by use case below, pick the right product configuration, and customize colors, doors, leg height, and roof style in our free 3D builder. Free delivery on every order, free installation on tubular-frame buildings.
20×30 Metal Garage (2 Cars)
Fully enclosed 600 sq ft steel garage. Park 2 vehicles with room for a workbench, tools, and seasonal storage. Roll-up door, walk-in door, 17 colors.
20×30 Workshop / Hobby Space
600 sq ft clear-span steel workshop for woodworking, auto repair, welding, and crafts. The 20×30 layout gives enough room for tool walls, a workbench, equipment storage, and hobby projects without taking over your property.
20×30 Metal Carport (Open)
Cheapest 20×30 steel building configuration. Cover 2 to 3 vehicles, ATVs, lawn equipment, or boats. Add side panels later if you decide to enclose it.
20×30 Commercial Steel Building
Small retail spaces, offices, auto detailing bays, service businesses, and light warehouse use. Code-certified clear-span design with 12-gauge framing maximizes every square foot of usable space.
20×30 RV Cover / Boat Storage
Year-round protection for travel trailers, smaller RVs, boats, jet skis, and towable campers. The 30-foot depth gives practical covered storage while the 20-foot width leaves room for access along the sides.
20×30 Home Gym / Studio
Private 600 sq ft fitness space with high ceilings, durable floors, and full insulation for year-round training. Room for a power rack, cardio equipment, free weights, and a small studio area.
20×30 Metal Barn (Farm & Ranch)
Tractor barn, hay storage, livestock shelter, or feed barn. Heavy-duty galvanized steel handles harsh agricultural use, and the 20-foot width improves equipment movement inside the building.
20×30 Backyard Studio / Retreat
Personal retreat away from the house. Game room, music studio, art workshop, lounge, or backyard studio with space for a desk, seating, and storage. Fully insulated and pre-wired for HVAC, lighting, and entertainment.
20×30 Factory / Warehouse
Inventory staging, service bays, small equipment storage, and light production. Heavy-duty 12-gauge framing with up to 20′ clear-span height gives room for forklifts, pallet storage, and small-scale commercial work.
20×30 Government / Institutional
Evacuation shelters, municipal equipment storage, field offices, and emergency response staging. Engineered up to 170+ MPH wind ratings with stamped permit-ready drawings.
20×30 Equestrian Arena / Tack Room
High roof clearance for mounted riders, reinforced flooring for hooves, oversized roll-up doors. Store tack, hay, feed, and groom horses under one all-steel roof.
20×30 Houses of Worship
Churches, mosques, temples, and gurdwaras. Column-free 600 sq ft interior fits small-group seating, fellowship use, classrooms, and multi-purpose community layouts.
Not sure which 20×30 metal building configuration fits your project? Our building advisors design it free.
What’s Included in a 20×30 Metal Building Kit?
Every 20×30 prefab steel building kit ships with everything you need to stand up your structure. Free curbside delivery on every order, free professional installation on tubular-frame buildings, no hidden fees. Add upgrades to match your exact use case.
Free With Every 20×30 Metal Building Order
Everything you need ships free with no hidden fees
- 14-gauge galvanized steel frame20′ x 30′ footprint with leg height of your choice from 8′ to 20′
- Choice of 3 roof stylesRegular Roof (rounded), A-Frame Horizontal / Boxed Eave, or Vertical Roof for snow runoff
- 29-gauge sheet metal panelsRoof and sides in your color choice (1 color or mix-and-match)
- 17 color optionsPick roof, walls, and trim independently from 17 popular metal building colors
- Galvanized purlins, girts, and bracingCold-formed steel secondary framing for structural integrity
- All hardware includedFasteners, color-matched screws, sealing strips, brackets, bolts
- Painted flashings, trim, ridge capsColor-matched to your panel choices, 20-year paint warranty
- Foundation-matched anchorsConcrete, asphalt, mobile home, or auger anchors based on your install surface
- FREE delivery to all 48 statesCurbside delivery to your install address, no hidden freight charges
- FREE installation on tubular buildingsMost carports, garages, barns, and RV covers. Custom red-iron commercial may have install fees.
- 20-year rust-through warrantyPlus 90-day workmanship guarantee on labor and assembly
+ Popular 20×30 Building Upgrades & Add-Ons
Optional add-ons to configure your 20×30 prefab building exactly the way you want it
- Side panel enclosure (open to enclosed)Convert a 20×30 carport into a fully enclosed garage or workshop
- 12-gauge steel frame upgrade33% thicker tubing, recommended for commercial, equestrian, and heavy-load workshops
- 26-gauge sheet metal upgradeThicker panels for hail-prone regions and longer paint life
- Certified / engineered drawingsStamped plans, foundation drawings, wet-stamped permit packages
- Higher wind and snow ratingsUp to 170+ MPH wind for hurricane zones, up to 65+ PSF snow load
- Roll-up garage doorsSizes from 6’x6′ up to 14’x14′, plus hydraulic and rapid-entry options
- Walk-in doors and framed openings36″ personnel doors, double doors, framed openings for windows or HVAC
- Windows (30″x30″ or custom)Natural light with insulated glazing options
- Insulation packagesSingle-bubble, double-bubble, fiberglass batt, spray foam, or insulated metal panels
- Wainscoting (two-tone walls)Premium look with contrasting lower panels in any of the 17 colors
- Lean-to additionsCovered side spaces for extra storage on 1, 2, or 3 sides
- Taller leg heights (up to 20′)For RVs, car lifts, equestrian arenas, or commercial overhead clearance
Customize & Build Your 20×30 Metal Building Online
Every option below is selectable in our free 3D builder or your custom quote. The 20′ x 30′ footprint stays the same. Roof style, leg height, gauge, doors, windows, color, and insulation are all yours to choose.
Leg Height (8′ to 20′)
The 20×30 footprint stays fixed. Leg height is yours to choose. Carports start at 8′ to 9′. Garages are 9′ to 12′. RV covers go 12′ to 16′. Equipment and commercial buildings can stretch up to 20′ for forklift, lift, and overhead clearance.
3 Roof Styles
Regular Roof (rounded corners, horizontal panels, most affordable, no permits in many states). A-Frame Horizontal also called Boxed Eave (classic peaked look with horizontal panels). Vertical Roof (peaked A-frame with vertical panels, recommended for snow and rain runoff, required for buildings over 36′ long).
Roof Pitch & Slope
Standard 3:12 roof pitch on all 20×30 buildings. Upgrade to 4:12 or 5:12 pitch for heavy snow regions or steeper aesthetics. Cool roof coatings reduce summer cooling costs in hot climates.
Frame Gauge (14 or 12)
14-gauge galvanized steel tubing comes standard, ideal for residential garages, carports, and barns. Upgrade to 12-gauge (33% thicker) for commercial use, equestrian arenas, or workshops housing heavy lifts and machinery.
Sheet Metal Gauge (29 or 26)
29-gauge sheet metal panels are standard for roof and walls. Upgrade to 26-gauge in hail-prone regions, coastal climates, or for extended paint life on commercial buildings.
Certification & Engineering
Certified buildings come with stamped engineered drawings, foundation plans, and wind / snow load calculations matched to your local code. Required in most areas for permitted commercial and certified residential builds.
Roll-Up Garage Doors
Roll-up garage doors from 6’x6′ up to 14’x14′ available. Standard residential 20×30 garage gets one or two 10’x8′ or 9’x7′ doors. Add 12’W or 14’W doors for RVs, dually trucks, or commercial vans. Place doors on front, side, or back walls.
Walk-In Doors
36″ personnel doors with full frames, weatherstripping, and locksets. Insulated and non-insulated options. Locate them anywhere on the 20×30 perimeter to match your workflow. Double doors and steel security doors available.
Hydraulic & Rapid Doors
For commercial use, choose hydraulic one-piece doors or high-speed rapid-roll doors. Auto-lock and remote-controlled openers integrate with smart access systems for warehouses and service businesses.
Windows & Skylights
30″x30″ insulated glazing standard, with 36″x36″ and custom sizes available. Add skylights for natural light in workshops, gyms, and offices. Storefront windows for retail commercial 20×30 buildings.
Framed Openings
Need a custom door, window, or HVAC penetration later? Order framed openings now to skip future cutting. Sized to your spec for sliding doors, bay doors, or future expansion.
Garage Door Openers & Windows
Chain-drive, belt-drive, or smart Wi-Fi-enabled openers. Window kits for roll-up doors add daylight without sacrificing security. Pair with motion-activated lighting for full automation.
17 Standard Color Options
Choose from Barn Red, Beige, Black, Brown, Burgundy, Burnished Slate, Clay, Galvalume, Green, Patriot Red, Pewter Gray, Quaker Gray, Rawhide Tan, Royal Blue, Sandstone, Slate Blue, and White. All colors carry a 20-year paint warranty and resist fade from UV exposure.
Mix-and-Match Roof, Walls, Trim
Pick a different color for your roof, wall panels, and trim. Popular combinations include White walls with Barn Red roof for a classic farmhouse barn look, or Pewter Gray walls with Black trim for a modern commercial finish.
Wainscoting (Two-Tone Walls)
Add wainscoting for a premium two-tone look. Lower 3′ to 4′ of wall in a contrasting color creates curb appeal that matches residential homes, retail storefronts, or your existing property aesthetic.
Galvalume (Bare Metal Finish)
Galvalume is a hot-dipped aluminum-zinc coating with no paint. Most cost-effective option, blends into rural and industrial settings, and offers maximum corrosion resistance for coastal and humid climates.
Painted Trim & Flashings
Color-matched ridge caps, eave trim, corner trim, gable trim, and rake trim. All hardware including color-coded screws to match your panel choice for a clean finished appearance.
Custom Color Match
Need to match an existing building or HOA color requirement? Custom paint matching is available for an upcharge. Ask your building advisor for color samples and approval documentation.
Insulation Options
Single-bubble (radiant barrier, basic), double-bubble (better R-value, condensation control), fiberglass batt (R-13 to R-19), spray foam (highest R-value, air-seal), or insulated metal panels (sandwich-foam, premium). Pick based on climate and how you’ll use the building.
Lean-To Additions
Add a lean-to on 1, 2, or 3 sides of your 20×30 building for extra covered space without adding interior square footage. Common for tractor sheds, equipment overhangs, and outdoor work areas.
Mezzanines & Lofts
Add a mezzanine or partial loft for extra storage above your floor space. Engineered for live and dead loads. Common in 20×30 workshops, retail buildings, and home gyms with second-floor offices.
Interior Partitions
Divide the 600 sq ft into bays, offices, restrooms, or storage rooms. Steel stud partitions or insulated metal interior panels are available. Ideal for commercial 20×30 builds with mixed-use needs.
Trim, Anchors, Gables
Decorative trim around doors, corners, and rooflines. Different color trim adds contrast and curb appeal. Decorative gables over front doors give a residential look that matches your home.
Flooring Prep
We don’t pour foundations, but we’ll guide you on the right slab spec. Options range from gravel base ($0.50 to $1.50 per sq ft) for carports and barns, to engineered concrete pads with thickened edges for commercial use.
Wind & Snow Certification
Standard 115 MPH wind and 35 PSF snow load. Certified upgrades available up to 170+ MPH wind for hurricane and coastal zones, and 65+ PSF snow load for heavy snow regions like the Northeast and Mountain West.
Permit-Ready Drawings
Stamped engineered drawings, foundation plans, and code calculations. Meets IBC, IRC, NEC, IFGC, IECC, and IMC requirements. We’ll match the engineering to your county’s permit office.
Door Locks & Access Control
Slide bolts, deadbolts, keypad entry, smart locks, and Wi-Fi connected garage door openers. Auto-lock systems for commercial buildings. Knox box compliance available for fire department access.
Fire Safety & Alarms
Smoke and heat detectors, Class ABC extinguishers mounted, and emergency exit signage. For commercial 20×30 builds, sprinkler-system-ready framing and integrated alarms meet local fire code requirements.
Anchoring System
Concrete wedge anchors for slab installs, asphalt anchors for paved lots, mobile-home anchors for installation on existing pads, or auger ground anchors for dirt and gravel. All anchors are included with your build.
Solar & Roof-Top Loads
Engineered framing supports solar panel arrays, satellite dishes, HVAC condensers, and rooftop equipment. Get reinforced roof options if you plan to add solar to your 20×30 building now or later.
20×30 Metal Building Codes, Permits & Engineering
Every 20×30 prefab steel building we sell can be engineered, stamped, and certified to meet your local building codes. Required for permitted commercial 20×30 builds, and recommended for most residential garage and barn permits.
We also adhere to plumbing codes, energy conservation standards, and any state or local requirements. Our team handles code compliance so you have total peace of mind.
How to Maintain a 20×30 Metal Building
Simple seasonal upkeep that takes minutes per quarter and keeps your 20×30 prefab steel building structurally sound, weather-tight, and looking sharp through the full 20-year rust-through warranty period.
What Can You Do with 600 Square Feet?
A 20×30 metal building gives you practical enclosed covered space for storage, equipment, workshops, vehicles, and protected daily use
Business Storage
Store inventory, boxed products, tools, and supplies in a secure enclosed steel structure
Service & Repair Area
Use the tall enclosed layout for repairs, installations, and metal buildings work areas
Equipment Shelter
Protect machinery, tools, and valuable gear from weather and theft
Metal Building Operations
Use the space for staging, packing, shelving, and business workflow
Roll-Up Door Access
A 10′ × 10′ or larger roll-up door provides practical entry for vehicles, equipment, and supplies
Hobby & Project Space
Store project materials, gear, hobby vehicles, and recreation equipment indoors
Farm & Ranch Use
Shelter feed, tools, smaller implements, and ranch supplies with enclosed protection
Tall Clearance Building
Up to 20′ leg height gives extra working room and flexibility for larger storage needs
3 Ways to Order Your 20×30 Metal Building
Customize your 20×30 steel building in our free 3D builder, request a free custom quote, or talk directly with a building expert. Reservation deposit typically 10% to 30% based on your state and manufacturer. Final balance due only after your installation is complete.
Request Free 20×30 Quote
Free custom design, reply within 24 hours
Tell us your requirements and our 20×30 building advisors will design and price your custom steel building for free. Best path if you need certified drawings, permit help, an enclosed conversion, or a unique commercial layout.
- Free expert design consultation
- Permit and certification handled for you
- Custom layout and engineered drawings
- Quote delivered within 1 business day
Free quote. Flexible deposit to reserve after approval.
Build Your 20×30 in 3D
Design your 20×30 yourself, see live pricing
Use our interactive 3D metal building builder to customize every detail of your 20×30 build. Pick configuration (carport, garage, barn, RV cover, commercial), height, doors, windows, colors, gauge, and roof style. Watch your price update in real time.
- Visual 3D customization tool
- Live pricing as you customize
- Reserve your build with flexible deposit
- Balance due only after installation
Free tool. Flexible deposit to reserve your build.
Talk to a 20×30 Building Expert
Fastest answers, call or chat now
Speak directly with a building advisor who specializes in 20×30 metal buildings. Get pricing, permit guidance, configuration help, and customization advice in minutes. No forms, no waiting.
- Instant answers over the phone
- Expert advice on permits, codes, and sizing
- Walk-through of customization options
- Mon to Fri 8am to 6pm PST, Sat 9am to 3pm
Toll-free. Speak with an expert now.
How the 3D Builder Works
Design your ideal metal building in minutes
1. Launch Builder
Open the builder in a new tab so you can keep this page available while designing.
2. Configure Your Building
Set size, roof style, certification, colors, doors, side panels, and other custom options.
3. Save Your Design
Copy your configuration code or summary before returning to this product page.
4. Complete Your Request
Send us your final configuration and we will confirm pricing, scheduling, and installation details.
Ready to design your custom 20×30 metal building?
Tip:Keep this page open so you can return and submit your final configuration with ease.
How Much Does a 20×30 Metal Building Cost?
No hidden fees on any 20×30 prefab steel building. A 20×30 metal carport starts around $4,495, an enclosed garage from $7,995, a metal barn from $6,500, an RV cover from $4,995, and a commercial certified build from $9,500. Add foundation prep ($0.50 to $8 per sq ft based on spec) for the complete project cost.
Building Configuration
A 20×30 carport is the cheapest entry point. Enclosing it as a garage adds wall panels and doors. Commercial certification adds 12-gauge framing and engineered drawings. Pick the configuration that matches your use.
Your Location
Delivery distance, regional labor rates, and state-specific certification requirements affect the final price. Closer to a manufacturing plant typically means a lower price.
Steel Gauge
14-gauge galvanized tubing comes standard. 12-gauge (33% thicker, 0.1046″ thick) adds strength, longer warranty, and is recommended for commercial 20×30 buildings, equestrian arenas, and heavy workshops.
Roof Style & Pitch
Regular Roof is the most affordable. A-Frame Horizontal (Boxed Eave) adds curb appeal at a small premium. Vertical Roof costs slightly more but is required for buildings over 36′ long and recommended for snow regions.
Certification
Certified buildings with engineered, stamped drawings cost more but are required by most local codes for permitted commercial 20×30 buildings, and recommended for residential builds in coastal, hurricane, or heavy-snow zones.
Doors, Windows, Insulation
Each roll-up door, walk-in door, window, and insulation package adds to the price. Most 20×30 garages include 1 roll-up and 1 walk-in door in the base price. Larger doors, side-entry doors, or multiple bays cost extra.
20×30 Metal Building Complete Price Range
Range covers open carport at the low end through fully loaded commercial certified with 12-gauge upgrade, insulation, multiple doors, and engineered drawings at the high end. Reservation deposit typically 10% to 30% depending on your state and manufacturer. Your building advisor confirms the exact deposit with your custom quote. Remaining balance due only after installation is complete.
Flexible Financing & Rent-To-Own
Choose the payment path that fits your project and budget
Traditional Financing
Credit Check Required
- Finance your metal building project
- Structured monthly payment options
- Terms based on lender approval
- Fast online application process
- Ownership from day one
Rent-To-Own (RTO)
No Credit Check
- No credit check required
- Simple approval process
- Low upfront commitment
- Convenient monthly payments
- Great for many standard metal structures
How Delivery & Installation Works
A simple step-by-step process for getting your metal building installed
Place Your Order
Submit your request for the 20×30 configuration and confirm colors, doors, certification, and site details.
Step 1
Production Scheduling
Your order is scheduled according to manufacturing capacity and your configured metal building requirements.
Step 2
Prepare the Site
Make sure your jobsite is level and accessible before the install team arrives. Lift requirements and electricity availability should be reviewed in advance.
Step 3
Installation Day
Our crew installs the enclosed metal building and verifies the final layout, door placement, and exterior finish details.
Step 4
What real 20×30 Metal Building buyers say.
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Compare 20×30 vs. Other Metal Building Sizes
Need a different size? Compare prices and customize any of these prefab steel building sizes in our free 3D builder. Every order ships free to 48 states, includes free professional installation on tubular-frame buildings, and comes with a 20-year rust-through warranty.
| Feature | 18×30 Building | 20×30 Building | 20×40 Building | 24×30 Building |
|---|---|---|---|---|
| Square Footage | 540 SF | 600 SF | 800 SF | 720 SF |
| Use Capacity | Compact storage | 2-car garage + shop | Expanded storage | Wider operations |
| Access Potential | Very Good | Excellent | Excellent | Excellent |
| Roof Style | Customizable | Vertical | Customizable | Customizable |
| Best For | Compact metal building storage | Garage, workshop, storage | Expanded garage or shop | Wider shop or storage |
| View 18×30 | You’re Here | View 20×40 | View 24×30 |
20×30 Metal Building FAQ: Cost, Permits, Sizes & Install
Everything you need to know before ordering your custom 600 sq ft prefab steel building. Get answers on pricing, configurations, leg heights, roof styles, 17 color options, foundation prep, and code compliance. Still have questions? Call our 20×30 building advisors at 1-877-275-7048.
Request Your Custom Design & Quote
Tell us about your project and we’ll provide a custom design with exact pricing. No obligation, no pressure just helpful information to guide your decision.
🔒 A specialist calls within 1 business day. We never share your details.
Customize Other Metal Building Sizes
Nearby width and length variants across our full metal building lineup — buildings, carports, garages, barns, and RV covers.
Metal Garage With Lean-to - 20 x 30 x 10
20x31 Metal Building Kits Built for Your Property
20×31 Metal Carport (Open)
20x32 Metal Building Kits Built to Order
20×26 ATV, Mower, and Lawn Equipment Storage
20×26 Home Office and Hobby Room
20×26 Tractor Shed with Implement Storage
20×26 Small Business Inventory Storage
20×26 Collector Car and Motorcycle Showroom
20×26 Contractor Job-Site Tool and Material Storage
20×26 Pool House and Outdoor Entertainment Building
