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Stair Designers and Builders
Long Island, NYC & the Tri-State Area
Quality Craftmanship Since 1955
Free Estimates Within 3-4 Days
Affordable Pricing
High-Quality Staircase Craftsmanship Since 1955
For over 70 years, Quality Stair Builders, Inc has been a trusted, family‑owned company serving Long Island, NYC & the tri-state area. Founded in 1955 and now a third‑generation business, we bring decades of experience, friendly service, and dependable craftsmanship to every project. With sales offices located throughout the Tri-State area, we make it easy to get expert guidance and quality stair solutions at a affordable pricing.
Whether you’re building new or upgrading an existing space, our team is committed to delivering quality workmanship and fair value, including consideration of price matching on verified written estimates. We pride ourselves on responsive service and quick turnaround times. Contact us today to schedule a visit or request a free estimate within 1–2 days.

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Why Choose Us
Free Estimates Within 3-4 Days
Price Matching Considered
Affordable Pricing
Over 70 Years of Experience
Third-Generation Business
Local, Family-Owned Since 1955

Stair Building Services
At Quality Stair Builders, our comprehensive stair building services address residential and commercial needs with precision and reliability.
Staircase Design and Installation


Railings
Quality Stair Builders designs, builds, and repairs custom railings in wood, metal, glass, and more, delivering solutions that combine safety, durability, and style.
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Here's what our satisfied customers are saying...
At Quality Stair Builders, Inc, we take pride in providing exceptional staircase design and installation services to our customers. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of Quality Stair Builders, Inc and let others know what you think.
Frequently Asked Questions
As the custom stair builders Nassau County, NY homeowners and contractors depend on, we specialize in transforming ordinary entryways into breathtaking architectural centerpieces. We understand that a staircase is more than just a way to get from one floor to another, and we're committed to delivering results that exceed your highest expectations.
Can you help me design a staircase if I only have a vague idea of what I want?
We certainly can! Our team specializes in turning loose concepts into structural realities, establishing us as the go-to custom stair builders Nassau County, NY clients depend on for complete design-to-build services. We'll look at your space, listen to your style preferences, and create detailed sketches or digital renderings to help you visualize the final product.
How do you ensure that the new staircase complies with local building codes?
Safety and legal compliance are our top priorities. As experienced custom stair builders Nassau County, NY building inspectors know well, we strictly adhere to all local, state, and international building codes regarding riser heights, tread depths, and handrail safety. This rigorous attention to detail guarantees that your project will pass official inspection without any stressful delays.
Can I see examples of your past work or visit a project you've completed?
We love showing off our craftsmanship! We maintain a robust portfolio of our completed projects right here on our website, making us the transparent custom stair builders Nassau County, NY property owners can easily vet online. Our photo galleries showcase a wide variety of architectural styles, materials, and complex spatial layouts we've successfully mastered. If you are looking for specific design inspiration, we can also connect you with past clients who have graciously offered to share their testimonials.
How do we get the process started, and is there an initial consultation fee?
Getting started is simple and completely free. Just give us a call or fill out our online form to schedule your complimentary initial consultation with one of our premier custom stair builders in Nassau County, NY or the neighboring communities. During this initial meeting, we'll discuss your vision, evaluate your architectural space, and outline a realistic timeline for your project. Afterward, we will provide a clear, line-item estimate so you know exactly what to expect moving forward.
Do my new stairs come pre-finished, or do they need to be painted and stained after installation?
We offer both options depending on your preference and project scope. We can deliver your staircase fully pre-finished from our shop, or we can install it raw so your preferred local painter can match it perfectly to your existing flooring and trim. If you choose our shop-applied finish, we utilize durable, commercial-grade sealants that resist scuffs and heavy wear much better than standard household paints. We will discuss these finishing options early in the design phase to align perfectly with your overall renovation timeline.
How do you protect my floors and walls while installing the new staircase?
We treat your home with the utmost respect. Before any tools are unboxed, our crew lays down heavy-duty floor runners, puts up plastic dust barriers, and protects nearby walls to ensure your living space remains pristine throughout the installation.
What is the maximum weight capacity of the custom staircases you design?
Every staircase we construct is engineered to exceed the standard residential weight and load requirements outlined by local building codes. When collaborating with the custom stair builders Nassau County, NY residents know and love, you can rest assured that we use heavy-duty framing, robust fasteners, and premium hardwoods to prevent flexing or sagging under heavy loads. Our structural designs are robust enough to easily handle moving heavy furniture, appliances, and high volumes of foot traffic simultaneously without a single squeak. We prioritize structural over-engineering so that your staircase feels incredibly solid and secure beneath your feet for decades to come.



