Stairs

Stairs are one of the most critical components of any deck — not only for accessibility but for safety, design flow, and overall function. At King County Decks, we specialize in designing and building custom deck stairs that are built to code, made to last, and tailored to fit your outdoor space with precision.

With over 23 years of experience in construction and outdoor living projects, we’ve built everything from single-step patio access to complex multi-tiered staircases on three-story decks. Our work is trusted throughout Bellevue, Seattle, Tacoma, Kirkland, Redmond, and Mercer Island for its durability, attention to detail, and seamless integration with deck railings and features like pergolas or custom landings.

Custom Stairs for Any Deck

Whether you need a small set of stairs for your backyard barbecue patio or a fully engineered staircase for a raised deck with a jacuzzi or pool, we provide solutions that fit. We work with a wide variety of materials, including:

• Pressure-treated lumber for classic durability

• Composite stair systems for low-maintenance needs

• Hardwood options for high-end finishes

• Matching railing systems for safety and style

Our team can also incorporate stair lighting, decorative risers, and tailored railing designs that complement pergolas, platforms, and multi-level decks.

Precision and Craftsmanship

Each stair system we build is carefully measured, cut, and installed to ensure even rises, level treads, and long-term structural integrity. We never cut corners — especially when it comes to safety and building code compliance. Our stairs not only look good, they perform reliably year after year.

Straightforward Quotes, Trusted Work

We believe in honest, transparent pricing. You’ll receive a clear quote, a detailed scope of work, and a timeline — without hidden fees or vague allowances. Whether you’re adding stairs to an existing deck or designing a full outdoor space with railings and pergolas, we’re here to guide the process from start to finish.

King County Decks proudly serves Bellevue, Seattle, Tacoma, Kirkland, Redmond, Mercer Island, and surrounding communities — offering expertly built stairs that connect your deck with your landscape in both form and function.