Once a child (or an adult who just doesn’t love climbing a ladder at midnight) starts asking for stairs instead of rungs on a bunk bed, the question becomes less about wanting stairs and more about how to actually get them safely, without turning a bedroom into a construction project. In 2026, there are really three paths people take: buy a bunk bed that already has a built-in staircase, buy a standalone stair unit or ladder-to-stair conversion kit designed to attach to an existing bunk, or build a custom staircase from scratch. Each has real tradeoffs in cost, space, safety, and how much of a weekend you’re willing to give up.
Why people move away from ladders in the first place
Straight ladders are compact and cheap, but they’re genuinely harder to climb safely, especially for kids under 6, adults with mobility issues, or anyone climbing down half-asleep in the dark. Stairs give you a wider foot placement, often a handrail, and usually built-in storage in each step — drawers or open cubbies that make up for the floor space the staircase itself takes up. The tradeoff is that a staircase needs roughly 30-40 inches of depth along one side of the bed, versus about 20 inches for a ladder, so room layout matters as much as budget.
Option 1: Buy a bunk bed that already has a built-in staircase
This is the lowest-effort, most reliably safe route, and it’s why staircase bunk beds have become one of the more popular searches in the bunk and kids’ bed categories. Brands like Max & Lily, Harper & Bright Designs, and Storkcraft sell twin-over-twin and twin-over-full staircase bunks where the steps are structural, bolted into the frame, and rated for repeated climbing rather than added on after the fact. Many include 3-4 drawers built into the staircase itself, which is genuinely useful in a shared kids’ room where floor space for a dresser is limited.
The downside is footprint and price. A staircase bunk bed typically needs an L-shaped or rectangular floor area a few feet larger than a standard ladder bunk, and the units usually cost more than an equivalent ladder model because of the extra lumber, hardware, and drawer glides. If you’re buying new anyway, though, this is almost always the safer and more durable choice than retrofitting stairs onto a bed that wasn’t designed for them.
Option 2: Add a stair-step attachment to an existing ladder bunk
If you already own a bunk bed and don’t want to replace it, some manufacturers and third-party sellers make stair-step conversion units meant to bolt onto the existing ladder mounting points, essentially replacing a straight ladder with a shallower stepped unit. These exist, but they’re less common than full staircase bunk beds, and fit is the biggest risk — the mounting holes, ladder angle, and bed height all need to line up with your specific frame. Before buying one, measure the exact width between your bed’s ladder mounting brackets and the vertical rise from floor to the top bunk’s side rail, then check the conversion kit’s listed compatibility carefully. When in doubt, contact the kit manufacturer with your bunk bed’s model number rather than guessing from photos.
Option 3: Build custom stairs yourself
This is the route for people who are handy, want a very specific footprint, or want to integrate a reading nook, bookshelf, or closet into the stair structure. It’s genuinely satisfying when done right, but it’s also where most safety mistakes happen, so treat it as a real carpentry project, not a weekend hack.
Core safety numbers to build to
- Step rise: keep each step between 7 and 8 inches, matching typical staircase code minimums, so kids don’t have to over-stride between steps.
- Step depth (tread): at least 10 inches of usable foot space per step, ideally 12, especially for adult use.
- Handrail: a continuous rail along the open side of the staircase, mounted at a height a climbing child or adult can actually grip, not just a decorative cap rail.
- Load rating: the staircase needs to support dynamic (bouncing, running) loads, not just static weight, so use construction-grade lumber (2×4 or better framing) rather than thin plywood risers alone.
- Anchoring: the staircase should be bolted to the bunk frame and, ideally, secured to a wall stud as well, the same way the bed frame itself should be anchored per most bunk bed safety guidance.
Materials that hold up
Solid pine or poplar framing lumber is the standard choice for DIY bunk stairs because it’s affordable, easy to cut, and strong enough for repeated climbing loads when properly braced. Plywood works for the enclosed sides and any drawer boxes, but shouldn’t be the only structural support for the treads themselves. If you’re adding storage drawers into the steps, use full-extension drawer glides rated for at least 75-100 lbs so a stuffed drawer doesn’t sag or bind over time.
Comparing the three approaches
| Approach | Typical cost | Effort | Safety confidence | Best for |
|---|---|---|---|---|
| Buy a staircase bunk bed | $$-$$$ | Low (assembly only) | High — engineered as one unit | New purchases, families wanting built-in storage |
| Stair conversion/attachment kit | $$ | Medium (fit-dependent) | Medium — depends on exact compatibility | Keeping an existing bunk you already own |
| Custom-built stairs | $-$$$ (materials + time) | High | Depends entirely on build quality | Handy owners wanting a custom footprint or storage design |
A note on weight limits and age
Regardless of which route you choose, check the combined weight rating of the bed and staircase, not just the mattress and frame. Many bunk beds cap the top bunk at 150-200 lbs and recommend against use by children under 6 on the top bunk entirely, per standard bunk safety guidance — a staircase doesn’t change that age recommendation, it just makes the climb itself safer once a child is old enough to use the top bunk.
Related buying guides
- Browse bunk beds
- Bunk beds for adults
- Loft beds for kids
- Kids beds hub
- Bed sizes and dimensions guide
- How we test beds and frames
- Bed frames with storage
Can I add stairs to any bunk bed?
Not safely in most cases. Stairs need a wider footprint and different mounting geometry than a ladder, so unless the manufacturer sells a compatible conversion kit for your exact model, it’s usually better to buy a bed designed with a staircase from the start.
How much floor space do bunk bed stairs need?
Plan for roughly 30-40 inches of depth along one side of the bed, compared to about 20 inches for a straight ladder, plus clearance to walk past the bottom of the stairs.
Are staircase bunk beds safer than ladder bunk beds?
Generally yes, because wider treads and handrails reduce slips, especially for younger kids or nighttime bathroom trips, though a poorly built DIY staircase can be less safe than a well-designed ladder.
What’s the ideal step height for bunk bed stairs?
Aim for 7 to 8 inches of rise per step, matching standard residential staircase code, so the climb feels natural rather than like an oversized step-up.
Can I build bunk bed stairs with storage drawers?
Yes, and it’s one of the most popular DIY additions — just use full-extension drawer glides rated for at least 75 lbs and make sure the drawer boxes don’t compromise the structural framing of the steps themselves.
Do bunk bed staircases need to be bolted to the wall?
It’s strongly recommended. Anchoring both the bed frame and the staircase to a wall stud significantly reduces tipping risk, especially with kids climbing and playing on the steps.
Is it cheaper to buy a staircase bunk bed or build stairs myself?
A DIY build can be cheaper in materials alone, but once you factor in time, tools, and getting the safety details right, a pre-built staircase bunk bed is often comparable in cost and far lower in risk.
What age is appropriate for a staircase bunk bed?
The staircase itself doesn’t change standard bunk bed guidance that children under 6 shouldn’t use the top bunk; stairs simply make the climb safer once a child is old enough for it.
Sophie Laurent
Sophie Laurent is TalkBeds' Beds & Bedroom Editor. With more than ten years covering home and furniture, she leads everything on the site that isn't the mattress itself: bed frames, platform beds, headboards, bunk and kids' beds, sizing, and the interiors decisions… Full profile & sources →