Hide Items Under Stairs (Pullout Drawer Bins)
Pullout bins can turn the space under a staircase into useful storage, provided they sit in a separate, nonstructural cabinet. First check the stair framing, headroom, wiring, plumbing, ventilation, and required fire protection. Measure the opening and choose slides for the bin’s size and load. Never cut a stringer to make a drawer fit.
Could a pullout bin fit under your stairs without compromising the stair or hiding something that needs access? The answer depends on what is inside the stair enclosure, how the stair is built, and what local codes require. I plan these projects around those constraints first, then size the bins to the space that remains.
Plan the Under-Stair Storage and Identify Constraints
Before designing a cabinet, find out what the space contains and which surfaces provide structural or fire protection. The usable footprint may be smaller than it looks. A careful survey helps prevent damage and identifies whether the project is suitable for a skilled DIY installer or needs a contractor.
Start by measuring the opening at the floor, at the intended drawer fronts, and farther back. The underside of a stair slopes, so height changes with depth. Note the finished floor, baseboards, wall angles, and any out-of-square corners. Measure each planned bin separately rather than assuming every drawer can be the same height.
Look for stair stringers, supports, wiring, plumbing, ducts, and electrical boxes. A stringer is a sloped structural member that supports the stair treads. Do not cut, notch, or drill one to gain room. Even a small cut can affect the stair’s load path. If you cannot identify the framing or services, have a qualified professional inspect the area before work begins.
Also check how the stair enclosure is finished. Under the 2021 International Residential Code (IRC), Section R302.7 requires the enclosed side of usable space under stairs to be protected with ½-inch gypsum board. Local codes may use a different edition or add requirements. Do not assume a new cabinet front can replace a required protective layer.
Next step: Sketch the space, mark obstacles, and confirm local code requirements before ordering materials.
Set Drawer Access, Stair Headroom, and Slide Clearances
A successful pullout needs room to travel, a safe route past the stair, and enough clearance for the drawer and its contents. Measure the full path, not just the cabinet opening. The IRC’s stair headroom rule and the slide maker’s side-clearance instructions both matter to the final layout.
IRC Section R311.7.2 sets a minimum stair headroom of 6 feet 8 inches, subject to the section’s stated exceptions. Check the locally adopted code and measure the stair’s required walking area after the cabinet is planned. A drawer, handle, or open door must not intrude into required clearance.
Choose slides based on the drawer’s width, length, load, and expected use. Side-mount slides need a specific gap between each drawer side and the cabinet. For example, Accuride’s 3832 slide documentation specifies ½ inch per side and a 100-pound load rating for applicable models and configurations. Those figures are not universal: verify the current instructions for the exact model, length, and installation conditions.
| Design check | What to measure or confirm | Why it matters |
|---|---|---|
| Opening | Width and height at each drawer position | The stair slope changes available space |
| Drawer depth | Cabinet face to the deepest clear point | Avoids hitting framing or services |
| Slide fit | Required gap on both sides | Prevents binding or loose fit |
| Load | Bin, hardware, and stored items together | Must stay within the slide’s rating |
| Stair clearance | Headroom and walking path | Keeps the stair usable and code-compliant |
Estimate the load before choosing slides. Shoes and light seasonal items may suit a different setup than books or tools. Do not treat a slide’s rating as permission to overload the cabinet, fasteners, or floor beneath it.
Next step: Draw the bin and slide envelope at full size, including the required side gaps and the space needed to pull it out.
Frame and Install Pullout Bins Without Altering the Stair
Build the storage as a separate cabinet or carcass, anchored to suitable framing, rather than forming a drawer opening by cutting into the stair. A carcass is the cabinet’s box-like frame. This approach keeps the storage independent of the stair’s structural members and lets you fit the bins to the actual opening.
- Set out the cabinet. Mark the finished front position and each drawer opening. Account for trim, wall angles, floor slope, and slide clearance. If the walls are out of square, use the measured dimensions at the drawer location rather than copying one width everywhere.
- Build the carcass. Use a stable frame sized for the opening and intended load. Anchor it to suitable framing; do not use stair stringers as a place to cut or weaken. If the available framing is unclear, pause and get qualified advice.
- Fit the slides. Install the exact slide model according to its current instructions. Keep the cabinet square and the slides level and aligned. Small alignment errors can make a pullout bind, especially when the drawer is long or heavily loaded.
- Build and fit the bins. Leave the clearances the slide maker specifies. Test each bin empty before adding handles, stops, or a latch. Use stops or latches when needed to keep a drawer from rolling out or moving during use.
Bins that follow the stair slope can use space more closely, but each one is harder to design than a simple rectangular drawer. A series of smaller pullouts may be easier to build and use. Decide based on access and construction skill, not just on how much volume the shape appears to save.
Next step: Install one bin as a test, check its travel, and correct fit issues before repeating the layout.
Verify Fire Protection, Service Access, and Loaded Operation
Before finishing the installation, confirm that required protection remains intact and that every service can still be reached. A neat cabinet is not a safe solution if it blocks a junction box, duct, equipment clearance, or required protective layer. Test the bins with a realistic load, not just while empty.
Under NEC Section 314.29, covered junction, pull, and outlet boxes must remain accessible without removing building finish. Do not place one behind fixed joinery or a permanently closed panel. If a box needs access, plan a suitable accessible opening in line with local requirements.
There is no general IRC-mandated airflow figure for an ordinary storage drawer. Still, do not block a duct, return-air path, equipment intake or exhaust, or other designed ventilation. If a mechanical system is nearby, check its design and the applicable mechanical code rather than guessing at a clearance.
If the installation removes or interrupts gypsum board required by the adopted code, restore a compliant protective assembly. A decorative cabinet front is not automatically a substitute. Once finished, load each drawer gradually and check for smooth movement, tipping, loose anchors, rubbing, and interference with the stair or nearby services.
Next step: Keep a record of the slide model, load instructions, and any access points that must remain clear.
Compare Pullout Layouts for Common Under-Stair Spaces
The best layout depends on the opening and what you plan to store. These examples are planning scenarios, not fixed dimensions: stair slopes, framing, and local rules vary. Measure each site before choosing a drawer shape or assuming the space can hold a certain load.
| Layout | Often suits | Main trade-off |
|---|---|---|
| Several short, rectangular bins | Shoes, games, or small household items | Simple shape, but more fronts and slides |
| One or two deep bins | Bulky seasonal items that are not used daily | Fewer drawers, but items at the back are harder to reach |
| Bins of different heights | Mixed items under a changing stair slope | Uses varied height well, but needs careful measuring |
| Low, wide pullouts | Flat or low-profile items | Easy to see contents, but slide capacity and width need close checks |
Think about how often you will use each bin. Put frequent-use items in the easiest-to-reach pullout, not necessarily the deepest one. Store heavier items only where the cabinet and slide system are designed to carry them, and label bins if similar fronts make contents hard to identify.
Next step: Match bin size to the item list, then check access and load before choosing a layout.
Review Two Typical Installation Scenarios
These scenarios show how the same planning rules lead to different choices. They are illustrative examples, not measurements from a specific home. In each case, the stair structure and services must be checked on site before any cabinet is built.
In a narrow entry stair, a resident may want a pullout for shoes and bags. If the front opening is shallow or a wall limits travel, short bins may be easier to reach than one deep drawer. The installer should first confirm that the cabinet can be anchored without cutting the stringer and that open bins do not interfere with stair clearance.
In a larger stair enclosure, a family may want to store seasonal gear in deeper pullouts. A deep drawer can use more of the available footprint, but its contents and hardware add load. The installer should verify the slide rating for the exact configuration, inspect for ducts or wiring, and test the loaded drawer for smooth travel and stable anchoring.
Next step: Treat each opening as a site-specific cabinet, not a standard kit size.
Finish the Project With a Safety Check
A final check helps catch issues that are easy to miss during construction. Confirm the cabinet is secure, drawers move as intended, required protection is restored, and services remain reachable. Keep the layout simple enough that you can remove or service a bin without disturbing the stair structure.
Before regular use, check that:
- No stringer or structural support was cut, notched, or drilled.
- Stair headroom and the walking path remain clear.
- Slides match their manufacturer’s clearance and load instructions.
- Electrical boxes and required service points remain accessible.
- Ducts, returns, and equipment clearances are not blocked.
- Required under-stair gypsum protection is intact.
- Loaded bins open, close, and stay in place without rubbing or tipping.
If a drawer binds or the cabinet shifts under load, stop using it until the cause is corrected. Do not solve a fit problem by trimming structural framing. The key rule is simple: adapt the cabinet to the stair, not the stair to the cabinet.
Frequently Asked Questions
These answers address common questions about planning, fitting, and using pullout bins beneath stairs. Local code adoption, existing construction, and slide instructions can change what is permitted or practical. When a condition is uncertain, verify it before cutting, fastening, or closing the space.
Can I cut a stair stringer to make a wider drawer?
No. A stringer supports the stair, and cutting or notching it can weaken the structure. Make the storage opening in separate, nonstructural cabinetry or finish instead. If the current framing prevents the desired layout, ask a qualified professional to assess the stair rather than modifying it without an approved design.
What fire protection is required under stairs?
The 2021 IRC Section R302.7 requires the enclosed side of usable space under stairs to be protected with ½-inch gypsum board. Your local jurisdiction may have adopted another edition or amendments. Check local requirements and restore any required protective layer; do not assume a cabinet front replaces it.
How much headroom must the stair keep?
IRC Section R311.7.2 specifies 6 feet 8 inches of stair headroom, subject to its stated exceptions. Confirm the code edition used locally and check the finished installation, including handles and open drawers. If the project could affect the stair’s required clearance, get local building guidance before proceeding.
How much side clearance do pullout slides need?
It depends on the slide model. Some side-mount slides require ½ inch on each side; Accuride 3832 documentation gives that figure for applicable models and configurations. Check the current instructions for your exact slide and length. Do not transfer one model’s clearance or load rating to another.
Can a drawer hide an electrical box?
Not if doing so makes the box inaccessible. NEC Section 314.29 requires covered junction, pull, and outlet boxes to remain accessible without removing building finish. Plan an accessible opening or change the cabinet layout. Ask a qualified electrician or local authority if you are unsure what access is required.
Can I store items near a duct or return vent?
Do not block a duct, return-air path, equipment intake or exhaust, or designed ventilation. There is no general IRC airflow number for ordinary drawers, so do not guess at a clearance. Check the mechanical system design and applicable code, or ask a qualified HVAC professional.
Are deep pullout bins always the best choice?
No. Deep bins can use more of the available footprint, but items at the back may be harder to reach, and a larger drawer can carry more weight. Choose depth based on what you will store, how often you need it, the measured space, and the slide system’s instructions.
How do I know whether my under-stair space is suitable?
Measure the opening and inspect for framing, wiring, plumbing, ducts, electrical boxes, and required fire protection. Confirm stair headroom and service access, too. If you cannot identify structural members or hidden services, have a qualified professional inspect the space before building or anchoring a cabinet.
(This article was written by one of our staff writers, Robert Kensington. Visit our Meet the Team page.)
