Stairs Cost Calculator
See what your stairs will cost — a clear, line‑by‑line estimate of materials and labor, per step and in total, for wood or composite builds.
Finished floor to finished floor.
The depth you step on, not counting the nosing.
Wider stairs need more stringers and more board feet.
Labor typically runs 40–60% of material cost for a built staircase.
| Stringers (3) | $176 |
| Treads (15) | $270 |
| Risers (16) | $144 |
| Fasteners & hardware | $25 |
| Railing | $335 |
| Labor | $475 |
Materials
$949
Labor
$475
Total
$1,424
Per step
$89
16 steps
- Tread (per linear foot)
- $6
- Riser (per linear foot)
- $3
- Stringer (per linear foot)
- $4
- Stringers used
- 3
- Stringer length
- 16' 8 15/16"
What drives stair cost: materials vs labor
The price of a staircase comes down to two things in roughly equal measure: materials and labor. As a rule of thumb, labor runs 40–60% of the material cost — the slider in the calculator lets you dial that in for your region and whether you are hiring a carpenter or building it yourself. The material line items are the ones that move the total most: treads are the single biggest wood cost because you buy one full-width board per step, risers add up across the flight, and the stringers scale with both how long the flight is and how wide it is (wider stairs need a third, fourth, or fifth stringer).
Expressed per step, a simple interior wood stair often lands in the low tens of dollars per step in materials, while a fully installed deck stair commonly runs roughly $150–$600 per step once labor, railing and fasteners are included. Switching the material from pressure-treated pine to oak or composite is the fastest way to see how finish choice changes the bottom line — composite and hardwood treads cost several times what pine treads do per linear foot. For an outdoor build, the deck stairs calculator sets the rise, run and stringer count this estimate prices; for a poured flight, the concrete stairs calculator gives the volume and bag count.
Ways to save on a staircase
- Cut your own stringers. Precut stringers save time but cost more per piece; if you have a framing square and a circular saw, laying out your own is cheaper in materials.
- Choose the material for the job. Pressure-treated pine is the most economical outdoors; save oak or composite for the visible treads and risers where the finish matters.
- Keep the flight straight. Landings, winders and turns add framing, more stringers and more labor — a single straight run is almost always the cheapest path between two floors.
- Skip the railing only where code allows. Railing is priced by the linear foot and is one of the larger optional line items — but a guard is required on most open flights, so toggle it on when it applies.
- Do your own labor. Because labor is 40–60% of the build, doing the install yourself roughly halves the total on a simple flight.
Frequently asked questions
How much does it cost to build stairs?
A typical interior staircase runs from a few hundred to a few thousand dollars depending on size, material and finish, with materials and labor each making up roughly 40–60% of the total. Stairs Calc breaks the estimate into stringers, treads, risers, railing, fasteners and labor, per step and total.
How much do deck stairs cost per step?
Deck stairs commonly run about $150–$600 per step installed, depending on material, railing and region.
Is it cheaper to build or buy precut stringers?
Precut stringers cost more per piece but save layout time and reduce mistakes; cutting your own is cheaper in materials if you have the tools and time. Stairs Calc shows the stringer line item so you can compare.
Does composite cost more than wood?
Composite treads and railing usually cost more up front than pressure‑treated wood but need less maintenance over time. Toggle the material in the calculator to see the difference in the line items.
Related stair calculators
Written by the Stairs Calc editorial team. Methodology and code references: see our methodology.
Built and maintained by builders, drafters and engineers who plan stairs for a living — every code limit is transcribed from the published standard and cited to its exact section.
Last reviewed 2026-06-20 against IRC 2021/2024
Stairs Calc gives accurate geometry and checks it against published building-code limits, but results are estimates for planning. Codes are adopted and amended locally and change over time. Always confirm dimensions against your local adopted code and a licensed professional before you build.