Cargo Trailer Interiors: More Space, More Possibilities
Flat floors, no wheel wells, and room for full-size everything. Here's what you can do inside a cargo trailer conversion.
Cargo trailer interiors range from 72 sq ft (6x12) to 200+ sq ft (8.5x24), with flat floors and straight walls that maximize usable space. A 7x16 trailer offers 112 sq ft -- nearly double a Sprinter van's 60 sq ft of usable floor space. At Emery Custom Builds, we design trailer interiors with full kitchens, dry bathrooms, queen beds, and custom cabinetry tailored to how you actually live.
Why Do Cargo Trailers Have More Usable Interior Space?
The biggest advantage of building inside a cargo trailer instead of a van is simple: more usable space per dollar.
Vans have wheel wells that eat into your floor plan, curved walls that complicate cabinetry, and fixed dimensions you can't change. Cargo trailers give you a rectangular box with flat floors, straight walls, and the ability to choose your size before you start building.
That means layouts that would be impossible in a van — like a full dry bathroom with a separate shower stall, or a kitchen with standard-size countertop space — are completely doable in a trailer.
Interior Space by Trailer Size
For comparison, a Sprinter Extended van has about 60 sq ft of usable floor space. Even a small 6x12 trailer gives you 20% more.
What Layout Options Work for Each Trailer Size?
The right layout depends on the trailer size and how you'll use it. Here's what works in each.
6x12 — The Compact Build
About the same footprint as a large van, but with flat floors and no wheel wells. You'll make trade-offs, but you can build a fully functional living space.
- •Queen bed (crosswise at rear) with storage underneath
- •Compact galley kitchen along one wall
- •Wet bath or porta-potty setup
- •Small seating/dining area (usually convertible)
7x16 — The Full-Timer's Choice
This is where cargo trailer conversions really shine. Enough space for every system without compromise.
- •Queen or king bed (lengthwise) with walk-around space
- •Full kitchen with standard countertop depth and residential fridge
- •Dry bathroom with separate shower, toilet, and sink
- •Dinette or couch area that stays set up (no daily conversion)
- •Ample closet and pantry storage
8.5x20+ — The Full Layout
At this size, you're building a small apartment. The layout options are almost unlimited.
- •Separate bedroom with door/curtain
- •Full-size kitchen with oven, full fridge, and counter space
- •Full bathroom with tub-style shower
- •Dedicated office/workspace area
- •Washer/dryer combo (if plumbing supports it)
What Systems Go Into a Cargo Trailer Interior?
Every cargo trailer conversion covers the same major systems, regardless of size.
Insulation & Walls
Cargo trailers start as bare metal shells. We insulate walls, ceiling, and floor (Thinsulate for walls/ceiling, XPS foam for floors), then cover with wall paneling — typically tongue-and-groove wood, plywood, or composite panels. The flat, straight walls make this work go faster than in a van with all its curves.
Flooring
Vinyl plank is the standard — waterproof, durable, and easy to install on the trailer's flat subfloor. Some premium builds use tile in the kitchen and bathroom areas. The flat floor means no custom subfloor work around wheel wells like you'd need in a van.
Cabinetry & Storage
Straight walls mean standard cabinetry dimensions work. You can use deeper cabinets, standard drawer slides, and even off-the-shelf components in some cases. Custom builds still look and perform better, but the geometry is far more forgiving than a van.
Kitchen
In a 7x16 or larger, you can fit a real kitchen: standard-depth countertops, a residential-style fridge (not a tiny 12V unit), a multi-burner cooktop, and a proper sink. Smaller trailers use compact galley layouts similar to what you'd see in a van.
Bathroom
This is where trailers pull ahead of vans. A 7x16 fits a full dry bathroom — separate shower stall, composting or cassette toilet, sink with cabinet — without eating into your kitchen or bedroom space. In a van, a full bathroom takes a huge percentage of your floor plan.
How Does a Cargo Trailer Interior Compare to a Van?
- • Floor plan: Trailers have flat, rectangular floors. Vans have wheel wells, curved walls, and narrower widths. Layout freedom is significantly better in a trailer.
- • Appliance size: Trailers can fit residential-size appliances. Vans need compact or 12V alternatives for most things.
- • Ceiling height: Many cargo trailers have 6'6"–7' interior height. Comparable to or better than most vans.
- • Separation: Your tow vehicle stays independent. Drive any truck or SUV. Swap tow vehicles without losing your living space.
- • Trade-off: You can't walk from the driver's seat to the living area. You need to stop, get out, and enter the trailer through its door.
Frequently Asked Questions About Cargo Trailer Interiors
How much interior space does a cargo trailer have?
A 6x12 gives you about 72 sq ft. A 7x16 gives you about 112 sq ft. An 8.5x20 reaches 170 sq ft. All with flat floors and straight walls — nearly every square foot is usable.
What's the advantage over a van interior?
More space, flat floors (no wheel wells), the ability to fit full-size appliances, and total separation between your tow vehicle and living space. The trade-off is you can't drive and live in the same vehicle.
Can you put a full bathroom in a cargo trailer?
Yes. In a 7x14 or larger, you can fit a full dry bathroom with a separate shower, toilet, and sink. Smaller trailers work well with a wet bath or compact setup.
What size trailer should I convert?
6x12 for compact solo/couples builds. 7x16 for full-time living with all the features. 8.5x20+ if you want an apartment-style layout with separate rooms.
What size bed fits in a cargo trailer?
A 6x12 fits a queen crosswise. A 7x16 fits a queen or king lengthwise with walk-around space. Larger trailers can fit any bed size you want.
Related pages: Cargo Trailer Conversions · Cargo Trailer Camper · Trailer Conversion Cost · Interior Systems
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