Estimate refinish, new straight runs, spiral kits, and attic pull-down stairs. Pick scope, step count, material, and balustrade. 2026 data; not a contractor bid.
| Item | Quantity | Estimated range |
|---|
Got a contractor quote? Compare it to the planning range.
What this is: a planning-range staircase calculator informed by HomeGuide, HomeAdvisor, Homewyse, manufacturer (Stairtek, Coffman, Crown Heritage) MSRP, and licensed cost-estimating references.
Labor is modeled from per-unit installed rates with a crew-rate sanity check ($75-$140/crew-hr loaded billing rate), informed by BLS OEWS 47-2031 (Carpenters).
Last updated: May 2026. Full methodology →
| Scope | Range | Timeline |
|---|---|---|
| Attic pull-down stair | $700-$1,800 | 3-5 hours |
| Refinish 13-step oak run | $1,500-$3,500 | 2-4 days (cure) |
| New oak straight run + balustrade | $4,000-$10,000 | 2-4 days |
| Pre-fab spiral kit installed | $3,500-$9,000 | 1-2 days |
| Custom open-stringer / curved | $20,000-$60,000+ | 2-4 weeks |
The biggest fork in staircase cost is whether you keep the existing structure:
If the structure is sound and you just dislike the look, refinishing is a fraction of the cost of a rebuild.
Tread material drives a big share of a new staircase's cost, multiplied across every step:
Add risers, a handrail ($23–$40 per ft wood), balusters ($35–$60 each), and newel posts ($294–$500 each) to complete a balustrade.
Type sets both price and feasibility: a straight run is cheapest; a spiral kit ($3,500–$9,000 installed) saves floor space but is tight to use and move furniture on; an attic pull-down ($700–$1,800) is a quick access solution; a custom curved or open-stringer staircase runs $20,000–$60,000+. Any rebuild has to meet IRC stair code — roughly a 7-3/4″ max rise, 10″ min tread depth, a 34–38″ handrail height, and baluster gaps under 4″. Older homes frequently fail current code, so a rebuild often includes bringing dimensions up to standard.
Refinishing a 13-step run: $1,500-$3,500. New oak straight run with railings: $4,000-$10,000. Spiral kit installed: $3,500-$9,000. Attic pull-down stair: $700-$1,800 installed. Custom curved or open-stringer staircases run $20,000+.
Refinishing keeps the existing structure (treads, risers, stringers) and just sands + restains + reseals. Costs $40-$90 per step. A full new staircase is the right answer when treads are cracked, risers are sagging, code requires changes (rise/run, baluster spacing), or you want a different material.
Oak treads ($40-$90 each) are the residential standard for stained finish. Pine ($15-$40) is fine for paint-grade finish. Walnut, hickory, and maple ($80-$180) are premium choices for higher-end homes. Engineered hardwood treads exist but most builders prefer solid wood for runs.
Red oak is the residential standard ($40-$90/tread). Pine is paint-grade ($15-$40). Walnut/hickory premium ($80-$180). Engineered hardwood OK for treads but most builders prefer solid.
IRC: max 7-3/4-in rise, min 10-in tread depth, min 36-in headroom over treads, min 36-in handrail height (34-38 in), max 4-in baluster spacing. Older homes often non-compliant; budget for upgrades on full rebuild.
Refinish — yes, weekend project for a confident DIYer with a sander. New structural run — pro work, both for code and for the load path.
Refinishing an existing run (sand, stain, reseal) is about $52-$90 per tread, or $1,500-$3,500 for a typical 13-step staircase. Building a new oak run with balustrade is $4,000-$10,000; a custom curved staircase can exceed $20,000.
Refinish ($52-$90 per tread) if the structure is sound and the wear is cosmetic. Replace ($235-$400 per tread to build new) if treads are cracked, the stringers sag, code requires changes, or you want a different material.
A pre-fabricated steel spiral kit runs $3,500-$9,000 installed. They save floor space but are tight for daily use and moving furniture, and any permanent staircase still has to meet local rise, tread, and handrail code.
