A staircase remodel costs $500 to $4,000 nationally for a refresh of treads, risers or railing parts, and $2,000 to $7,000 for a full staircase replacement, according to HomeGuide (2023). HomeAdvisor (2026) puts the average stair replacement at $2,048, with most projects between $952 and $3,234 and custom or ornate staircases running from $2,000 to more than $30,000. Floating and curved custom stairs sit well above those figures: HomeGuide (2023) lists floating stairs at $3,000 to $15,000 and arched or curved staircases at $9,000 to $100,000, while Fixr (2025) reports $15,000 to $100,000 installed for a floating staircase. For a local reference point, Angi’s New York City guide (2026) puts a staircase repair at $1,057 to $2,852, with most homeowners spending around $1,874, and reports New York City carpenters charging $60 to $120 per hour. Where a Nassau, Suffolk or NYC project lands inside the ranges on this page depends on local labor rates, permit fees and the material choices below.
DKP has built stairs and railings since 2001, is rated 5.0 stars on 95 Google reviews (September 2026), is licensed and insured in Suffolk County (HI-70938), Westchester, Southampton, Shelter Island and East Hampton, and is a member of the Stairbuilders and Manufacturers Association. The figures below are published national data; the real number for your house comes from a free consultation.
What drives the price of a staircase remodel
Five things move the number more than anything else: the treads and their material, the railing type, the structure of the stair, the finish, and permits.
Treads and material
Replacing treads and risers is the usual way to transform a carpeted or painted builder stair without touching the framing. HomeGuide (2023) puts a treads-and-risers replacement at $1,000 to $2,500 nationally, and HomeAdvisor (2026) reports $1,800 to $2,500 for the same scope. HomeAdvisor (2026) also prices stair replacement at $120 to $300 per step. White oak is the most common hardwood for treads, with walnut and ash as the usual alternatives, and walnut costs more per tread than oak. Thick solid hardwood treads for open-riser or floating designs cost more again because each tread is structural, not a cap over plywood. Stone and glass treads sit at the top of the range: HomeGuide (2023) puts wood at $100 to $250 per step installed, glass at $250 to $550 and stone at $300 to $900.
Railing type: wood, iron, glass or cable
The railing is often the largest single line on a remodel quote. Angi (2026) reports that a stair railing installation runs $900 to $6,000 with an average of $2,500, and its per-foot pricing by material runs from $50 for basic wood to $650 for glass. Published per-foot benchmarks look like this:
- Wood: $20 to $60 per linear foot installed (HomeGuide, 2023); $50 to $200 per linear foot (Angi, 2026). Turned balusters and a new handrail are the traditional upgrade; see our custom staircases.
- Wrought iron: $65 to $135 per linear foot installed (HomeGuide, 2023); $100 to $600 per linear foot for metal railings (Angi, 2026). DKP fabricates iron railing systems in Bay Shore.
- Glass: $100 to $600 per linear foot installed (HomeGuide, 2023); $200 to $650 per linear foot (Angi, 2026). Frameless glass railings cost more because each panel is tempered and set individually.
- Cable: $60 to $500 per linear foot installed (HomeGuide, 2023); $100 to $600 per linear foot (Angi, 2026). Cable railing suits South Shore and Hamptons homes.
HomeAdvisor (2026) frames the same choices by whole project: a standard stair railing installation at $500 to $1,300 with a $900 average, wrought iron at $1,600 to $4,600 with a $2,600 average, a cable system at $3,750 to $13,000, and a 10-foot glass railing at about $8,500 on average. The spread inside each material comes from length, turns and landings, and post material.
Structure: straight, curved or floating
A straight stair between two walls is the cheapest structure to rebuild. HomeGuide (2023) and Fixr (2025) both put a straight staircase at $1,900 to $5,000 installed nationally. Add a landing and an L or U turn and both sources move the range to $2,200 to $5,700. Curved and floating stairs are a different category because the stringer becomes an engineered element. HomeAdvisor (2026) lists floating stairs starting at $8,000 to $12,000 and arched or curved stairs at $10,000 to $20,000, while HomeGuide (2023) and Fixr (2025) both extend the curved range to $100,000 for large, fully custom work. A floating staircase needs a steel stringer inside the wall or brackets bolted to the framing, so part of the cost never shows.
Finish
A site-applied stain and clear coat on oak is the baseline. Custom color matching, wire-brushed or fumed oak, painted risers, and powder-coated or patinated steel each add cost, and a laminated, hand-finished curved handrail is priced very differently from a straight run of stock profile.
Permits and code
A structural stair replacement on Long Island usually requires a building permit, and the finished stair has to meet the New York State Residential Code: handrails 34 to 38 inches above the tread nosings, risers no taller than 8 1/4 inches, treads at least 9 inches deep, and guard openings on the open side of the stair tight enough that a 4 3/8 inch sphere cannot pass through (4 inches at landings and balconies). Replacing treads or balusters on an existing stringer often does not trigger a permit, but every town and village on Long Island sets its own rules, so confirm with the local building department before work starts; changing the footprint, rise or run does require one. Fees vary by town.
Staircase remodel cost by project type
These are national figures. Use them to compare project types and to set a budget bracket rather than as a fixed quote for a Nassau or Suffolk home, because local labor, permits and material choices decide where inside each range a project lands.
- New treads and risers on an existing stair: $1,000 to $2,500 (HomeGuide, 2023); $1,800 to $2,500 (HomeAdvisor, 2026). The best value upgrade if your stringers are sound.
- New balusters, newel posts and handrail: balusters $500 to $1,600 and a 10-foot banister section $300 to $450 (HomeAdvisor, 2026); balusters $1,200 to $1,600 and a banister $1,000 to $2,000 or more (HomeGuide, 2023).
- New railing system, glass, iron or cable: $900 to $6,000, average $2,500 (Angi, 2026); about $8,500 on average for a 10-foot glass railing (HomeAdvisor, 2026).
- Full replacement of a straight or L-shaped stair: $2,000 to $7,000 (HomeGuide, 2023); $952 to $3,251 for straight, $3,000 to $6,000 for L-shaped or switchback (HomeAdvisor, 2026). Demolition and disposal of the old stair adds $500 to $2,000 (HomeGuide, 2023).
- Custom staircase: $5,000 to $10,000 or more (HomeGuide, 2023); $2,000 to more than $30,000 for custom or ornate work (HomeAdvisor, 2026).
- Floating staircase: $3,000 to $15,000 (HomeGuide, 2023); starting at $8,000 to $12,000 (HomeAdvisor, 2026); $15,000 to $100,000 installed (Fixr, 2025).
- Curved or arched staircase: $10,000 to $20,000 (HomeAdvisor, 2026); $9,000 to $100,000 (HomeGuide, 2023 and Fixr, 2025).
For comparison, Angi’s national stair repair guide (2026) puts a repair at $952 to $3,234 with a $2,048 average, while its New York City guide (2026) reports $1,057 to $2,852 with most homeowners spending around $1,874. That is repair, not a full remodel, but it is the closest published local benchmark for stair work in the New York metro area. Finished examples of every category are in our portfolio.
How DKP handles a staircase remodel
Three things tend to push a stair quote up after work starts: hand measuring, design changes after fabrication, and surprises found on site. DKP’s process is built to remove those three risks.
- Laser scan of the stairwell. The stair is designed to the house as it is, not as the plans say it should be.
- 3D design renderings before fabrication. You approve proportions, materials and railing details on a 3D stair design render before anything is cut, which is when changes are easiest to make.
- Fabrication in Bay Shore. Treads, stringers, steel and railings are built in our own shop at 1971 Union Blvd. See stair manufacturing.
- Our own installation crews. The stair is installed by DKP’s own crews, so one team is accountable from the laser scan to the last handrail, often completing projects within two weeks once the design is approved.
How to get a real number for your stair
National ranges tell you which project type fits your budget. They cannot tell you what your stair will cost, because that depends on the opening, the number of risers, whether the stringers can stay, the railing length and every material choice above. DKP does not publish prices for that reason. The free quote follows a consultation where we look at the stair, talk through the design and set the riser count, tread depth and railing to meet the Residential Code of New York State. Bring photos and rough dimensions for a faster first conversation.
Frequently asked questions
How much does it cost to replace stair treads and risers on Long Island?
National benchmarks put a treads-and-risers replacement at $1,000 to $2,500 (HomeGuide, 2023) or $1,800 to $2,500 (HomeAdvisor, 2026). Species, tread thickness, finish and local labor rates move the number for a specific Long Island stair, which is why DKP quotes after a consultation.
Is it cheaper to remodel a staircase or replace it?
Remodeling is cheaper when the stringers and framing are sound. HomeGuide (2023) puts a remodel at $500 to $4,000 and a full replacement at $2,000 to $7,000, before demolition. If the stair is out of code, structurally soft or the wrong shape for the room, replacement usually costs less than repeated fixes.
How much does a floating staircase cost?
Published national ranges run from $3,000 to $15,000 (HomeGuide, 2023) and $8,000 to $12,000 as a starting point (HomeAdvisor, 2026) up to $15,000 to $100,000 installed (Fixr, 2025). The wide spread reflects the steel stringer, tread thickness, glass or cable railing and the structural work hidden in the wall.
Which railing is the most expensive: glass, iron or cable?
Glass is usually the highest per foot, at $100 to $600 (HomeGuide, 2023) or $200 to $650 (Angi, 2026). Cable and iron overlap in the middle of the range, and wood is the least expensive. Length, turns and post material matter as much as the infill.
Do I need a permit to remodel my stairs in Nassau or Suffolk County?
Swapping treads or balusters on an existing stair often does not need a permit, but every town and village on Long Island sets its own rules, so confirm with the local building department before work starts. Changing the structure, footprint, rise or run does require one, and the new stair must meet the New York State Residential Code. DKP is licensed in Suffolk County (HI-70938), Westchester, Southampton, Shelter Island and East Hampton and designs every stair to meet that code.
How long does a staircase remodel take?
Design and approval usually take the longest because the 3D rendering has to be right before fabrication. After the design is approved, DKP fabricates in Bay Shore and installs with its own crews, often completing projects within two weeks.
Ready for a number that applies to your house rather than a national average? Call (631) 665-8656, request a quote, or visit the Bay Shore showroom to see treads, handrails and railing systems in person.