20×30 Carport with Storage: What Fits in a 20×20 Cover Plus 20×10 Storage Room?

You've picked a smart size. A 20×30 carport with storage is one of the most practical configurations we build, and the reason so many buyers land here is simple: it solves two problems at once.

The front 20×20 section gives you covered parking that handles more than most people expect. The back 20×10 enclosed room handles everything that shouldn't be sitting outside. No matter how you plan to use it, it’s got you covered.

But before you order, it helps to know exactly what fits where, because the dimensions tell a different story depending on what you drive, what you own, and what you're trying to protect from the weather.

Key Highlights

• A 20×30 carport with storage is a 20-foot-wide building, 30 feet deep, with a 20×20 open covered bay at the front and a 20×10 enclosed storage room at the rear.

• The 20×20 covered section fits two standard vehicles side by side, one full-size pickup with room to work around it, or a truck paired with a utility trailer.

• The 20×10 storage room (200 sq ft) is large enough for a full workbench, wall shelving, a riding mower, small ATVs, and organized seasonal gear storage.

• Both sections share one roof and one frame. We deliver and install the entire structure as a single completed building.

• Doors, windows, insulation, and a vertical roof upgrade are all available customization options when you order.

• Engineer-certified stamped drawings are available for counties that require permits on enclosed structures.

• 20-year warranty coverage is available on qualifying buildings and materials.

• Design Your Building at getcarports.com or call us at (888) 901-6016.

Compare 20×30 carport options: 20×30×7 carport with storage | 20×30 vertical roof combo carport | 20×30×7 A-frame carport | 20×30×12 RV carport with vertical roof

How the 20×30 Layout Is Structured

Picture the building from the side. You're looking at 30 feet of total depth. The front 20 feet is the open covered bay: a roof overhead, posts at the corners, and clear access on the front and optionally the sides. The rear 10 feet is fully enclosed on all four walls with a lockable walk door.

One roof connects both sections. Same frame, same delivery, same installation crew. The building arrives and is installed as a single unit on your property.

That matters because buyers sometimes picture these as two separate buildings bolted together. They're not.

The covered bay and the storage room share structural members. That's part of what makes the 20×30 with storage more cost-effective than ordering a standalone carport and a standalone shed separately.

If you want to understand why a metal carport with enclosed storage makes sense vs. separate structures, that breakdown covers the economics clearly.

What Fits in the 20×20 Covered Bay

Two Standard Cars Fit Comfortably

The average American car runs 6 to 6.5 feet wide and 14 to 16 feet long. With 20 feet of width, two cars park side by side with a couple feet between them - enough to open doors and move around without scraping paint.

One Full-Size Truck with Room to Work

A lifted F-250 crew cab or a Silverado HD runs close to 7 feet wide and 22 feet long in the longest configurations. Park that truck in the bay and you still have 13 feet of overhead covered depth in front of it to walk around, open the hood, or pull things out of the bed. Farmers and contractors use the 20×20 bay exactly this way.

A Pickup and a Utility Trailer

Park a standard pickup on one side, pull a 6-foot or 7-foot utility trailer in next to it, and both fit cleanly in the 20-foot width. The trailer tongue typically extends a few feet past the front of the building. That's normal and expected on any carport installation.

Riding Mowers, UTVs, Golf Carts, and Smaller Equipment

If you're not using the covered section for full-size vehicles, smaller equipment fills it fast. A riding mower plus a golf cart. A side-by-side with room for staged tools around it. A boat on a small trailer. You have 400 square feet of covered floor space to work with.

Not sure if a 20-foot width is right for your specific vehicles? Our guide on choosing the right carport size walks through width-by-vehicle decisions in more detail.

What Fits in the 20×10 Storage Room

Two hundred square feet is more functional than it sounds. A typical spare bedroom in a house runs 120 to 150 square feet. The 20×10 storage room is bigger than that - and unlike a bedroom, it doesn't have closets eating the corners or a doorframe cutting the flow.

Lawn Equipment and Outdoor Gear

A walk-behind mower, a string trimmer, a blower, a pressure washer, and a few bags of fertilizer or seed take up roughly 60 to 70 square feet if they're stored with any organization. You still have more than half the room available after that.

Add wall-mounted pegboard and a couple of steel shelving units along the two 20-foot side walls, and the usable space grows substantially. The gear goes vertical. The floor stays clear.

A Real Workbench Setup

A 20×10 room fits a full 8-foot workbench along one wall with a standing work area in front of it and open floor on both sides. Add a cabinet overhead and you have a functional shop space: power tools, hand tools, a vise, organized drawers.

This is where the farmers and hobby mechanics go. The bench stays dry. Tools stay locked. And you're not hauling equipment out of a pickup bed every time you need a wrench.

Seasonal Storage

Camping gear, holiday decorations, off-season tires, hunting equipment, extra firewood. All of it needs somewhere. Shelves organize it. Boxes stack. Nothing gets rained on, sun-cracked, or chewed on by whatever lives under the porch.

Small ATVs and Motorcycles

A standard ATV is about 4 feet wide and 6 to 7 feet long. A motorcycle takes roughly 3 feet by 8 feet of floor space. Both fit through a standard 36-inch walk door. If you want to roll a larger machine in and out regularly, we can add a wider door to the storage room when you order. A 10-foot roll-up door turns the back room into a full second drive-in bay.

20×20 Covered Bay vs. 20×10 Storage Room: Side by Side

Who Orders This Building and Why

Three groups land on the 20×30 carport with storage more consistently than any other.

Homeowners with two vehicles and a yard to maintain. The covered bay handles both cars. The storage room replaces the backyard shed they've been putting off for three years. One delivered building handles both needs.

Farmers and rural property owners with mixed equipment. One work truck under cover, mowers and tools locked in the storage room. Everything in the same spot. No more gear scattered across three outbuildings.

Contractors who need on-site storage. Park the truck in the bay, lock materials and tools in the room. No renting off-site storage, no loading and unloading a trailer every morning.

The same building structure serves all three groups without modification. The uses may change; the dimensions stay the same.

Buyer tip: If the 20×10 room will hold tools, mowers, or contractor materials, compare enclosed-storage layouts before you order. Door placement can change how useful the room feels every day.

Customization Options for the 20×30 Carport with Storage

Most buyers adjust at least one or two things when they order. Common changes we see:

Walk-in door placement on the storage room. You can position the door on the back wall, either side wall, or on the shared interior wall between the storage room and the carport bay. Interior doors are popular because they let you step directly from the parked truck into the storage room without going outside.

Roll-up door on the storage room. Upgrading to a roll-up door converts the back room into a true second bay. Good option if you're storing an ATV, a motorcycle, or equipment that needs to roll in and out.

Windows for light and airflow. One or two windows on the storage room walls make a real difference if you're using the space as a workshop. Natural light costs nothing to run.

Insulation. Bubble wrap or fiberglass insulation keeps the storage room from hitting extremes. Summer in the South without insulation turns an enclosed metal room into an oven fast.

Vertical roof panels. Vertical roofing channels rain and snow off the sides rather than letting debris settle in the roof channels. If you're in a region with regular snowfall or heavy rain, the vertical roof upgrade is worth it. See our breakdown of the best carport roof style for snow for a detailed comparison.

Gauge upgrade. Standard framing works well for most installations. If you're in a high-wind zone or your county requires engineering certification, a 14-gauge frame is the upgrade that matters.

Permits for a 20×30 Carport with Storage

Permit requirements vary by county and state, so there's no single answer here.

Open carports are often treated as temporary or accessory structures and may not trigger a permit in many rural counties. Once you add fully enclosed walls and a lockable room, the classification shifts. Most counties treat an enclosed storage room as a structure that requires a permit.

Check with your county or municipality before you order. Our metal building permit checklist covers what most counties look at and what documentation you'll typically need.

If your county requires engineer-certified stamped drawings, we can include engineer-certified stamped drawings with your order. Just let us know when you call.

Installation: What to Expect

We deliver and install your 20×30 carport with storage as a complete unit. One crew, one visit. You don't coordinate between contractors, and you don't schedule separate delivery and installation windows.

Your site needs to be prepped before the crew arrives. That means level ground, no overhead obstructions, and clear access for the delivery vehicle. If you're installing on a concrete slab, the slab needs to be fully cured before installation day. For more on what "site ready" actually means, our guide on metal carport anchoring options covers ground, concrete, and asphalt installs side by side.

Delivery and installation are included in your final building price. No surprise charges at the end.

Financing and Rent-to-Own are available. If you'd rather spread the cost out, ask about those options when you call.

Call (888) 901-6016 or Design Your Building at getcarports.com to configure your layout and get a current timeline for your area.

Ready to price your layout? Use the 3D building designer to choose your size, roof style, doors, storage layout, and options before you request pricing.

Frequently Asked Questions

Can a 20×20 carport bay fit two full-size pickup trucks?

Most full-size crew cabs run 6.5 to 7 feet wide. At 20 feet of width, two large trucks park side by side with roughly 6 feet between them - workable but not spacious. If both trucks are on the larger end of the spectrum, consider a 24-foot-wide carport bay for comfortable door clearance.

What kind of floor does the 20×10 storage room have?

We install on your existing surface. If your site is gravel or compacted ground, that's your storage room floor. If you want concrete, you'll need to arrange the pour before our install crew arrives.

Can I add electricity to the storage room?

We do not run electrical wiring. Once your building is installed, a licensed electrician can run conduit, outlets, and lighting into the storage room without any structural modification.

Is 200 square feet actually enough for a small workshop?

For most hobby mechanics and farmers, yes. A 20×10 room fits a full 8-foot workbench with standing clearance on both sides, plus wall-mounted tool storage above it.

Does the storage room share a wall with the covered bay?

Yes. The storage room sits at the rear of the building. The wall between the covered bay and the storage room is a standard framed wall, and we can put a walk door in it so you move directly from the parking area into the storage room without stepping outside.

Can I order a 20×30 carport with storage with a vertical roof?

Yes. Vertical roof panels are available on this building size. The vertical roof runs panels up-and-down rather than side-to-side, which channels rain and snow off the building more effectively. If you get regular precipitation or want a longer-lasting roof surface, the vertical upgrade is the right call.

Do I need a permit for a 20×30 carport with storage?

Permit requirements depend on your county and whether the structure is classified as permanent or temporary. Fully enclosed rooms with lockable doors are more likely to require a permit than open carports.

The Takeaway

A 20×30 carport with storage is two functional spaces built into one footprint. The 20×20 bay handles vehicles from everyday cars to full-size work trucks and trailers. The 20×10 storage room handles lawn equipment, tools, small machines, and anything else that needs a dry, lockable place to live.

For most homeowners, farmers, and contractors, this combination covers the two most common property storage problems in a single delivered building. Design Your Building at getcarports.com or call (888) 901-6016 to get started.