Building storage under stairs typically costs $500-$5,000, with a common professionally built project averaging about $2,000. The final price depends on the opening’s size and shape, whether the design uses shelves, cabinets, or pull-out drawers, and how much finish carpentry, painting, and electrical work is needed.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Basic open shelves | $500 | $1,000 | $1,800 | Simple framing and painted shelves |
| Closet-style enclosure | $900 | $1,800 | $3,200 | Door, trim, and interior shelving |
| Custom cabinets or drawers | $1,800 | $3,500 | $5,000+ | Made-to-fit fronts, hardware, and finish |
| DIY materials | $200 | $600 | $1,500 | Excludes tools and paid help |
Assumptions: A typical indoor staircase, about 20-40 square feet of usable floor area, standard paint-grade materials, and ordinary access. Regional labor and custom finishes can move quotes outside these ranges.
Typical prices for shelves, closets, and stair drawers
Most homeowners pay $1,000-$3,500 to convert an accessible under-stair space into finished household storage. A straightforward layout with fixed shelves and a small access door may cost $500-$1,800. Adding a framed partition, full-height door, trim, and painted interior often puts the project around $900-$3,200.
Custom cabinetry is generally the most expensive option. Built-in drawers, angled cabinet fronts, soft-close slides, and matching face frames commonly bring a project to $1,800-$5,000 or more. A rough planning allowance is $100-$500 per linear foot of finished cabinet frontage, though drawers and angled geometry can make a short run costly.
A basic, finished storage nook often costs less than half as much as a custom drawer system. Prices assume the existing staircase is sound and the space does not need structural changes, plumbing relocation, or major electrical work. Large staircases and elaborate millwork may exceed the high-end range.
What framing, cabinet materials, and labor add to the quote
Quotes typically separate the build into preparation, materials, installation, and finish work. Some contractors provide one project total instead, so asking what is included helps compare bids. The following ranges describe common line items for a modest project; not every job requires each one.
| Quote item | Low | Average | High | Typical scope |
|---|---|---|---|---|
| Framing and backing | $150 | $350 | $700 | Studs, blocking, and opening adjustments |
| Plywood, shelving, or cabinet stock | $150 | $500 | $1,400 | Paint-grade boards through hardwood components |
| Doors, drawer fronts, and hardware | $100 | $450 | $1,300 | Basic hinged door through fitted drawer slides |
| Labor and installation | $300 | $900 | $2,200 | Carpentry, fitting, and assembly |
| Trim, patching, and paint | $100 | $350 | $900 | Caulk, wall repair, casing, and finish coat |
| Removal and disposal | $0 | $150 | $500 | Old shelving or debris, if present |
Material prices are lower for standard plywood, melamine, and paint-grade trim than for hardwood, veneer matching, or factory-finished cabinet fronts. Labor can be a major share because each panel and door may need custom cutting to follow the stair slope.
For an ordinary built-in, labor and finish carpentry commonly account for $600-$1,800 of the total. Painting may be included in a carpenter’s quote or priced separately; confirm whether wall and stair trim repairs are covered.
How opening width, stair pitch, and drawer depth change cost
The usable opening is not the same as the staircase’s full footprint. Headroom, stringers, landings, and the angle of the stairs determine what can fit and how complicated the framing will be. A wide, nearly rectangular opening is easier to furnish than a narrow triangular cavity with little access.
For a project with roughly 20 square feet or less of accessible floor, open shelves or a single cabinet may stay near the lower price bands. A 30-50-square-foot space often requires more framing, multiple doors, or several storage zones, increasing material and labor costs. These are planning comparisons, not fixed per-square-foot rates.
Drawers are especially sensitive to dimensions. A drawer run around 24-36 inches deep may need heavy-duty slides and careful fitting; unusually deep drawers, often over 36 inches, can require reinforced boxes and cost more. A stair pitch near 30-40 degrees can also make angled fronts, doors, and trim more labor-intensive than square cabinet faces.
Complex geometry can raise labor even when the storage area is small. The estimate may also increase if a wall must be opened, a stair support needs protection, or the storage must provide access to utilities. A contractor should verify the space in person before promising exact dimensions or a fixed price.
Keep the under-stair storage design simple to control cost
The most direct way to lower the quote is to limit custom moving parts. Fixed shelves, standard hinged doors, and paint-grade plywood usually cost less than multiple fitted drawers, premium hardwood fronts, or specialty hardware. A single large access door can also be less costly than several small doors cut to follow the stair angle.
Before work begins, decide what the space will hold. Coats and cleaning supplies need different shelf spacing than shoes, luggage, or bins. A measured plan helps avoid paying for deep cabinets or adjustable systems that do not solve a real storage need. Keeping the design within the existing opening also helps avoid added framing and wall repair.
Homeowners can reduce paid time by clearing the area, removing loose stored items, and identifying outlets, switches, or plumbing that must remain accessible. They should not remove structural stair parts or alter wiring themselves. Ask contractors to price a basic shelf layout separately from optional drawers, upgraded finishes, and lighting.
Choose the simplest layout that fits the stored items, then add only the features with clear value. Comparing two or three written quotes is useful when each lists material grade, number of doors or drawers, painting, disposal, and any exclusions. A low bid that omits finish work may not be the least expensive completed project.
Carpenter hours and project duration for a stairwell build-in
A simple set of shelves can take a carpenter about 4-8 hours on site, while a framed enclosure with a door and trim may require 1-2 working days. Custom cabinets or pull-out drawers often take 2-4 days of installation and fitting, in addition to time spent measuring, ordering, or building components off-site.
Carpentry rates commonly fall around $50-$100 per hour in many U.S. markets, with higher charges in expensive metro areas or for detailed finish work. A contractor may quote by the project rather than by the hour. If the job is billed hourly, the estimate should identify the expected crew size and whether travel, shop fabrication, and return visits are included.
Painting and drying can extend the calendar schedule without adding the same number of paid labor hours. Prefinished cabinet parts may shorten installation but can cost more in materials. Ask for both the expected on-site work time and the full calendar schedule. That distinction matters when the staircase or hallway will be partly blocked during construction.
Regional labor rates can shift a custom storage quote
Prices vary by local wages, contractor availability, housing costs, and the amount of finish carpentry typically requested. In lower-cost rural and Midwestern markets, a standard built-in may be 10%-20% below a comparable job in a high-cost coastal metro. Large cities in the Northeast, West Coast, and parts of the Mountain West can run 15%-30% above a national middle-of-the-market estimate.
Those percentages are broad comparisons, not guaranteed local adjustments. A rural homeowner may pay extra if the contractor has a long travel distance or must source custom materials. In a city, a compact home may offer limited staging space, and parking or building access can add time. Ask for a local quote that distinguishes labor, material, delivery, and disposal charges.
Local labor and access conditions can outweigh small differences in lumber prices. Comparing bids from contractors who regularly build cabinets or finish carpentry is more useful than applying a national average to a complex stair opening.
When removal, lighting, or electrical work adds extra charges
Removing old shelves or a small closet interior may add $100-$500, depending on disposal needs and whether the existing finish must be repaired. A new interior light can add about $150-$500 when wiring is nearby and the installation is straightforward. Longer wire runs, a new switch, or work inside a finished wall can push electrical charges to $500-$1,200 or more.
Other possible add-ons include wall patching, floor repair, new baseboard, and matching trim. Allow roughly $100-$400 for modest patching and paint touch-ups, but broad repainting can cost more. If the stairwell contains a plumbing line, duct, or electrical panel, the design may need access doors or a layout change rather than simply covering the space.
Permits are not commonly needed for a nonstructural shelving or cabinet project, but local rules differ. Changes to framing, electrical circuits, or a required egress route may trigger permits or inspections. Confirm permit responsibility and electrical scope before accepting the quote. A contractor should not conceal junction boxes, shutoff valves, or equipment that requires service access.
Compare fixed shelves with drawers and ready-made cabinets
Fixed shelves offer the lowest installed cost and make good use of irregular spaces, but items may be harder to reach near the back. A basic shelf-and-door setup usually costs $500-$1,800. Drawer systems improve access for shoes, linens, and small items, though custom drawer boxes and slides can add several hundred to more than $1,500 to a project.
Ready-made cabinets can cost less than fully custom work when standard widths fit the opening. A small cabinet unit may cost $150-$700 before installation and trim; fitting it to a sloped wall can erase some of that savings. Freestanding bins or shelving may cost $50-$300, but they provide less built-in appearance and may leave awkward gaps.
DIY can make sense for open shelves when the walls are square, the homeowner has suitable tools, and no structural or electrical work is involved. Materials may total $200-$800 for a modest setup, excluding tools, paint, and mistakes. Custom doors and drawers require accurate measurements and safe fastening. Use paid carpentry where the stair angle, finish match, or heavy loads make fitting difficult.
Three sample quotes for common under-stair layouts
A small, open shelf project might cover a 6-foot-wide opening with three paint-grade shelves and simple trim. At about 6-10 labor hours, a reasonable installed quote may be $700-$1,400, or roughly $115-$235 per linear foot. This assumes no demolition, electrical work, or wall repair.
A midrange closet build could include a framed opening, one 30-inch door, interior shelves, casing, and paint in a 7-foot-wide stairwell. With 14-22 labor hours and standard materials, a practical estimate is $1,400-$2,800. A fitted cabinet-and-drawer arrangement across a similar width might take 25-40 hours and cost $2,800-$5,000, depending on drawer count, hardware, and finish.
Compare sample totals only when scope and finish quality match. Each example assumes ordinary access and no structural changes. A quote should state whether it includes measuring, fabrication, installation, painting, debris removal, and taxes; otherwise, the final bill may differ from the headline price.