Top-Rated Contractors for Decks, Patio Covers & Home Additions

Serving Snohomish and King Counties

See your project in 3D before we build it, whether it’s a custom deck, covered patio, or home addition. As professional deck contractors and home construction experts serving the Seattle Eastside since 2010, Calcon Decks delivers transparent pricing, guaranteed craftsmanship, and advanced design technology that lets you visualize your finished project before construction begins.

Our Top-Rated Pro designation on HomeAdvisor and 15+ years of satisfied Eastside customers prove our commitment to quality.

Military Discount: 5% off labor (up to $500) for active-duty service members and veterans.

What Makes Calcon Decks Different

Design, Engineering & Permitting Under One Roof

Our team includes designers who create your 3D renderings, engineers who ensure structural integrity, and permitting specialists who navigate local regulations. Whether you’re building a deck, patio cover, or home addition, you work with one cohesive team from start to finish.

Building Code & Inspection Experts

We ensure your deck, patio cover, or home addition meets all Washington state building codes and passes inspection the first time. Our intimate understanding of local regulations and permitting requirements means you can rest easy knowing the job is done correctly and legally.

Eco-Friendly Commitment

For every deck we build, we donate to the National Forest Foundation to plant 20-25 new trees. Your outdoor project helps restore forests across America. Plus, we offer sustainable material options like Trex composite decking, which is made from 95% recycled materials and never needs staining or sealing.

Woman-Owned with Female Crew Members

As a woman-owned business with female construction professionals on our team, we bring a unique perspective to every project. Our clients appreciate our attention to detail, clear communication, and collaborative approach to bringing their vision to life.

Our Services

 

Custom Decks

From Trex composite decking to beautiful natural hardwood, we design and install decks that match your style and budget. As certified

 Trex deck builders, we offer the most durable, low-maintenance composite deck options available, backed by industry-leading warranties.

  • Composite Decking (Trex-certified)
  • Hardwood Decking
  • Custom Deck Railing
  • Deck Replacement Specialists

Patio Covers

Extend your outdoor season with an expertly crafted patio cover. From elegant gazebos to modern pergolas, we create covered spaces that protect your furniture, keep you cooler, and look great.

  • Gazebos
  • Pergolas
  • Trellises
  • Custom Designs

Home Additions

Need more space but love your neighborhood? Our home addition services let you expand strategically, adding value that often exceeds the cost of construction.

  • Additional Stories
  • Sunrooms
  • Family Rooms
  • Media Rooms
  • Bedrooms & Bathrooms

Industry-Leading Warranties 

Your investment is protected with a 5-year workmanship warranty on labor and up to 25-year materials warranty on select products like Trex composite decking.

Expert Deck, Patio Cover and Home Addition Contractor on the EastsideWhy Choose Calcon Decks?

✓ Fully licensed, bonded, and insured

✓ 15+ years serving the Seattle Eastside

✓ Woman-owned with female crew members

✓ Free estimates, detailed written quotes, and itemized proposals

✓ Eco-friendly options and forest restoration commitment

✓ Military discount available

Ready to get your free building quote? Contact us today to schedule your consultation.

Expert Home Addition, Patio Cover, and Deck Contractor

Serving Bellevue, Mercer Island,  Kirkland, Redmond, Mill Creek, Cathcart, Kenmore, Bothell, Woodinville, Kingsgate, Sammamish, Newcastle, Lynnwood, Edmonds, and Issaquah.