The King County Decks

Built for the Northwest. Built to Last.

Custom decks designed around your home and the Pacific Northwest climate. Over 23 years of construction expertise behind every build.

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Lets chat about your project. Call 206.944.2857

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    Start with the right project

    From custom deck design to roofing and siding, we handle every aspect of your home’s exterior with the same obsessive attention to quality.

    The builders behind the decks

    King County Decks was founded by Max Kovalev and Sergey Kuyan — experienced builders with over 23 years of home construction expertise through their parent company, MJK Construction. 

    After years of building homes across Oregon and Washington, our clients began asking for the same quality and craftsmanship in their outdoor spaces. 

    By popular demand, we launched King County Decks to focus exclusively on designing and building beautiful, durable custom decks.

    Max Kovalev & Sergey Kuyan- Co-founders · MJK Construction
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    Our Commitment to King County Homeowners

    Every project King County Decks undertakes is guided by four principles that have defined our work since day one:

    Quality

    We build to a standard we'd be proud to stand behind five, ten, and twenty years from now.

    Honesty

    We quote what the job costs, tell you what it needs, and communicate openly when challenges arise.

    Reliability

    We show up when we say we will, finish on the timeline we committed to, and answer our phones.

    Craftsmanship

    Details matter: tight corners, clean lines, consistent spacing. We don't consider a job done until the finish matches the structure.

    Testimonials

    We follow a careful, proven process on every project — protecting your property and ensuring a flawless installation from consultation through final walkthrough.
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    Before and After

    What started as a weathered, splintered eyesore became one of our proudest transformations. The original deck was uneven, unsafe, and barely usable. After listening to the homeowner’s vision, we designed a modern, low-maintenance composite deck with sleek railings and built-in lighting.

    The result? A beautiful, functional outdoor space ready for summer BBQs and quiet mornings with coffee. It’s not just a new deck — it’s a whole new way to enjoy home.