Designing and Building a Van Bed Platform
The bed is the centerpiece of any van build. Get the design right and you'll sleep well and have smart storage underneath. Here's how to approach it.
A van bed platform costs $300-$2,000 to build and most high-roof Sprinters and ProMasters fit a bed roughly 54-60 inches wide and 72-80 inches long. Fixed platforms are the most popular choice for 170" wheelbase vans, offering dedicated storage underneath. Use 4-6 inches of quality foam (2.5+ lb/ft3 density) for comfortable sleep and spaced slats instead of solid plywood for ventilation. Emery Custom Builds designs bed platforms that maximize both comfort and storage for your specific van.
The bed platform is usually the biggest single piece of furniture in a van, and it dictates a lot about how the rest of the layout works. Its height determines how much storage you get underneath. Its configuration (fixed, murphy, convertible) affects how you use the space during the day. And its comfort determines whether you wake up ready to go or wishing you were in a hotel.
We've built bed platforms in every configuration across Sprinters, ProMasters, and Transits. Here's what we've learned about getting it right.
Should I Build a Fixed Bed, Murphy Bed, or Convertible?
Three main options, each with real tradeoffs:
Fixed Platform Bed
The most common choice. A permanent bed at the rear or side of the van. Leave the mattress out, climb in, go to sleep. No setup or teardown required. Underneath is your garage area for bikes, gear, bins, or drawers.
Best for: 170" wheelbase vans with enough length for a bed plus a living area. Full-timers who want simplicity. People who carry bikes or bulky gear.
Murphy Bed
The bed folds up against the wall during the day, opening up floor space for living, working, or yoga. Folds down at night. More complex to build — you need a solid hinge system and a way to secure it in both positions.
Best for: Shorter vans (144" wheelbase) where the bed takes up most of the living space. People who prioritize daytime floor space over storage underneath.
Convertible Dinette
A seating area that converts to a bed by rearranging cushions or folding components flat. Functions as a couch and table during the day, a bed at night.
Best for: Smaller vans. People who need seating for more than two. Builds where versatility outweighs convenience. Tradeoff: you set up and break down the bed every day.
How High Should My Van Bed Platform Be?
Platform height is a balancing act between two things: storage below and headroom above.
Higher platform (30–36" from floor): Maximizes under-bed storage. You can fit bikes, surfboards, large bins, even a small motorcycle in the garage area. Trade-off: you can't sit fully upright in bed in most vans.
Lower platform (18–24" from floor): More headroom above the bed for sitting up, reading, working on a laptop. Less storage underneath — enough for drawers and flat bins but not a full garage.
In a high-roof Sprinter or ProMaster, you can often find a sweet spot around 28–32 inches that gives you a usable garage area AND enough headroom to sit up comfortably. In a standard-roof van, you'll have to pick your priority.
Pro tip: Before building anything, stack boxes or crates to your target height, put a sleeping pad on top, and sleep on it for a night. Does the headroom work? Can you get in and out easily? Is the storage height usable? Cardboard prototyping costs nothing and saves expensive mistakes.
What Materials Should I Use for a Van Bed Frame?
The frame needs to be strong, relatively light, and able to handle the constant vibration of driving without loosening. Three common approaches:
- Plywood and 2x4 lumber: The simplest and cheapest option. Easy to work with using basic woodworking tools. Heavier than alternatives. Use construction adhesive plus screws at joints — screws alone will loosen over time with road vibration. Use cabinet-grade plywood for visible surfaces.
- 80/20 aluminum extrusion: Strong, light, and infinitely adjustable. T-slot profiles bolt together with corner brackets, and you can reconfigure the frame later without rebuilding. More expensive than wood, but the flexibility is worth it for many builders. This is what we use on most of our builds.
- Welded steel tube: Strongest option. Ideal for heavy garage loads or murphy bed mechanisms that need rock-solid pivot points. Requires welding capability. Heaviest option.
Anchor the frame to the van's factory anchor points or L-track mounted to the floor. The bed frame must be secured — it can't shift during driving or hard braking. A 50-pound platform that comes loose in a hard stop becomes a projectile.
What Size Mattress Fits in a Van Conversion?
Standard mattress sizes rarely fit vans perfectly. Most van beds are slightly narrower or shorter than a standard queen (60" x 80"). Measure your actual available space — the distance between wall panels, not the bare metal width.
Common approaches:
- Custom-cut foam: Order a block of high-density foam cut to your exact dimensions. Companies like The Foam Factory or FoamByMail ship custom sizes. This gives you a perfect fit.
- Tri-fold mattress: A standard tri-fold that fits your platform dimensions. Convenient for convertible setups because the sections fold up easily.
- Modified standard mattress: Buy a standard queen or full and cut it down. Works with foam mattresses but not spring mattresses.
Aim for 4–6 inches of quality foam. Density matters more than thickness — a 4-inch mattress with 2.5+ lb/ft³ density foam will outperform a 6-inch mattress with cheap 1.5 lb/ft³ foam. Side sleepers should go thicker (5–6"). Back sleepers can get away with 4".
How Do I Maximize Under-Bed Storage in a Van?
The space under the bed is prime real estate. How you use it depends on your platform height and what you need to carry.
- Full garage: High platform (30"+) with open space for bikes, surfboards, camping gear, or a motorcycle. Access from the rear doors. Many builds include a sliding platform or drawer system so you can reach items without crawling under the bed.
- Drawer system: Slide-out drawers for clothing, tools, food storage, and supplies. Full-extension drawer slides are essential — you need to access the back of the drawer, not just the front six inches.
- Open bins: Simpler than drawers. Stackable bins or baskets that slide in from the rear or side. Less polished but functional and easy to reconfigure.
- Combination: Drawers on one side, open garage space on the other. This is a popular compromise that gives you organized storage and space for bulky gear.
Whatever you choose, make sure stored items are secured while driving. Nothing under the bed should be able to slide, roll, or crash around. Bungee nets, latched drawers, and bin dividers keep things contained.
Do I Need Slats Under the Van Mattress for Ventilation?
Don't put the mattress on a solid plywood sheet. Without air circulation underneath, moisture from your body heat gets trapped between the mattress bottom and the platform surface. Within weeks, you'll find mold growing on the underside of the mattress.
Use spaced slats instead — 3/4" plywood strips or solid wood slats spaced 2–3 inches apart. This creates airflow channels under the mattress that let moisture escape. Screw or bolt the slats to the frame so they don't shift while driving.
Some builders use a moisture barrier mat (like a DMX membrane) between the slats and mattress for additional airflow. In humid climates, this extra step is worth it.
For more interior system ideas including cabinetry that integrates with the bed platform, check our cabinetry page. And if you're still in the idea phase, browse our van conversion ideas gallery for layout inspiration.
What Are Common Van Bed Platform Questions?
What size bed fits in a van?
Most high-roof Sprinters and ProMasters can fit a bed roughly 54–60 inches wide and 72–80 inches long, depending on wall panels and wheel well placement. Measure your specific van's interior — dimensions vary by platform and build approach.
Fixed bed or murphy bed?
Fixed beds are simpler, more comfortable, and give you dedicated storage underneath. Murphy beds free up daytime floor space, which matters in shorter vans. For 170" wheelbase vans, fixed usually wins. For 144" wheelbases, a murphy bed or convertible layout is worth considering.
How thick should a van mattress be?
4–6 inches of quality foam. A 4-inch mattress with high-density foam (2.5+ lb/ft³) works for most people. Side sleepers and heavier individuals should go with 5–6 inches. Density matters more than thickness — cheap foam compresses and sleeps flat within months.
Related: All How-To Guides • Systems & Guides
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