Custom wood staircases in New York are made by dedicated stair shops that mill, assemble and install their own work, not by general carpenters fitting stock parts from a lumberyard. DKP Wood Railings and Stairs is one of those shops: it fabricates custom staircases in its own facility at 1971 Union Blvd in Bay Shore and installs with its own crews across the five NYC boroughs, Nassau and Suffolk County, Westchester and the Hamptons. In short, the answer is a stair builder with its own shop, a showroom and its own installation crews, and this guide explains how the work is done.
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. Finished work is shown in the portfolio.
How a custom wood staircase is made
A custom wood staircase starts with the opening in your house, not with a catalog. The builder measures floor-to-floor height, the rough opening and the headroom, works out how many risers fit and how deep each tread can be, and only then cuts parts.
Wood species
Four species are the usual choices for New York projects. White oak is the default for treads and railings because it is hard, takes stain evenly and matches the oak flooring found in many Long Island and Westchester homes. Walnut is chosen when the stair should read as furniture, with a deep brown color that needs only a clear finish. Ash has a grain similar to oak but a lighter, cleaner tone that suits modern interiors. Maple is dense and nearly grain-free, which works for painted risers and pale, Scandinavian-style stairs. Mixing species is common: oak treads with painted poplar or maple risers is a common combination in colonials and center-hall homes.
The parts
- Treads are the horizontal boards you step on, cut from solid hardwood, with a rounded or square nosing at the front edge.
- Risers are the vertical boards between treads. They can be stained to match, painted white, or left out on an open-riser design.
- Stringers are the sloped structural members that carry the treads. Closed stringers hide the tread ends behind a skirt board; cut stringers expose each step in profile.
- Newels are the heavy posts at the bottom, top and turns of the stair that anchor the railing. Box newels suit modern and transitional homes; turned newels suit classic ones.
- Balusters fill the space between newels under the handrail. In wood they are square, turned or tapered; many wood stairs pair with iron balusters or a glass panel railing instead.
Finishes
Wood stairs are often finished on site after installation so the color matches the adjacent flooring. Options run from clear water-based polyurethane, to oil-based stains in the standard oak colors, to painted risers and stringers with stained treads.
Wood stairs compared with steel and floating designs
A wood staircase is the right choice when the house has wood floors and trim and when the stair is enclosed by walls on one or both sides.
A floating staircase uses a hidden steel structure so the treads appear to cantilever from the wall, and a monorail staircase carries the treads on a single central steel spine. Both usually still use wood treads, often thick white oak or walnut slabs, but the structure is steel and the look is open. They involve steel fabrication and engineering that a wood-on-wood stair does not, and they suit open-plan spaces. A wood-on-wood stair is more forgiving in a traditional house and is the better fit for a Brooklyn brownstone or a Nassau colonial. The modern staircases page shows where the two directions meet.
What New York building codes require
DKP designs stairs to the Residential Code of New York State, and to the NYC Building Code inside the five boroughs. The numbers homeowners ask about most, which typically apply to one- and two-family homes, are these:
- Riser height is limited to 8 1/4 inches, and risers within one flight cannot vary by more than 3/8 inch.
- Tread depth must be at least 9 inches, measured nosing to nosing.
- Handrails sit 34 to 38 inches above the tread nosings and must be continuous and graspable.
- Guards on the open sides of a stair are typically at least 34 inches high (36 inches at landings and balconies), with balusters spaced so a 4-inch sphere cannot pass at landings and a 4 3/8-inch sphere cannot pass on the stair itself.
These limits are why a tight footprint often needs a winder or an extra landing rather than steeper steps, and why an old pre-war stair usually cannot be copied exactly when it is replaced. A custom builder solves this at the design stage. Stair work inside the five boroughs is often filed with the NYC Department of Buildings, so ask the shop how it handles drawings for the filing.
Where custom wood stairs fit in New York homes
- Brooklyn brownstones and Manhattan townhouses often have original stairs that are steep and narrow. A custom replacement keeps the period look with turned newels and a volute while meeting current riser and tread limits in the same opening.
- Queens and Bronx two-family houses often need a straight or L-shaped stair in a limited stairwell, sometimes with a mid-flight landing to make the run legal.
- Nassau County colonials and splits call for the classic oak tread, white riser and box newel combination, frequently paired with iron balusters to update the look without a full rebuild.
- Suffolk County new builds lean toward two-story foyer stairs with open stringers and glass or cable railings, planned into the framing from the start.
- Westchester and the Hamptons are where curved, floating and thick-tread designs anchor open-plan renovations. DKP is licensed and insured in Westchester County, Southampton, Shelter Island and the Town and Village of East Hampton.
How DKP builds a custom wood staircase
- Consultation. A call, an email to cs@dkpstairs.com or a visit to the Bay Shore showroom, where tread, stringer and railing samples are on display.
- Laser scanning. A DKP technician scans the stairwell so the floor-to-floor height, opening and wall angles are captured precisely.
- 3D design renderings. Before anything is cut, you review a 3D rendering of the stair in your space and approve proportions, species, railing details and finish.
- In-house fabrication. Stringers, treads, risers, newels and rails are milled and assembled in the Bay Shore shop. The stair manufacturing page describes what happens there.
- Installation by DKP crews. The same company that built the stair installs it, so there is no hand-off between a mill and a subcontractor. Details are on the stair installation page.
Because design, fabrication and installation are under one roof, DKP is often completing projects within two weeks once the design is approved. A firm schedule is set after the site measurement.
How to get a quote for a custom wood staircase
There is no standard price for a custom wood staircase because the dimensions, species, railing type and finish change from house to house. National cost guides are not a useful estimate for a New York project because they do not reflect the dimensions, species and railing choices that set the price of a specific stair. DKP gives a free quote after a consultation. To get one that is accurate, have these ready:
- Photos of the existing stair and the opening from above and below.
- The floor-to-floor height, if you can measure it, and whether the stairwell walls will stay.
- The species and finish of the adjacent flooring.
- The railing style you have in mind: wood, iron, glass or cable.
If you are comparing shops, ask each one whether it mills its own parts, whether its own crews install, what licenses it holds in your county and whether you can visit the shop or showroom before you sign. DKP fabricates in its own Bay Shore shop, installs with its own crews, lists its licenses above and keeps a showroom at 1971 Union Blvd that you can visit.
Frequently asked questions
Who makes custom wood staircases in New York?
Dedicated stair builders with their own mill and installation crews. DKP Wood Railings and Stairs in Bay Shore is one of them and serves the five boroughs, Nassau and Suffolk County, Westchester and the Hamptons. General carpenters also build stairs, but usually from stock parts.
What is the best wood for stairs in a New York home?
White oak is the usual choice because it is hard, stains evenly and matches typical New York oak flooring. Walnut is the premium option for a furniture-grade look, ash for a lighter modern tone and maple for painted or very pale stairs.
How long does a custom wood staircase take?
Design approval comes first, then fabrication in the Bay Shore shop. DKP is often completing projects within two weeks once the design is approved, and a firm schedule is confirmed after the site measurement and laser scan.
Can a custom wood staircase fit an existing opening?
Usually, yes. The builder measures the opening and floor-to-floor height, then sets the riser count and tread depth to fit within the Residential Code of New York State limits. Very tight pre-war stairwells may need a winder or landing.
Does DKP install as well as build?
Yes. DKP fabricates in its own Bay Shore facility and installs with its own crews, so one team is responsible for the staircase and its railing from the first measurement to the final finish.
Is DKP licensed to work in my area?
DKP holds home-improvement licenses in Suffolk County (HI-70938), Westchester County, Southampton, Shelter Island and the Town and Village of East Hampton, carries insurance and is a member of the Stairbuilders and Manufacturers Association. DKP also serves Nassau County and the five boroughs of New York City.
To start a custom wood staircase project, call (631) 665-8656, request a quote, or visit the Bay Shore showroom at 1971 Union Blvd to see tread, stringer and railing samples in person.