Home Addition Contractor in Snohomish and King County

Outgrown your home but love your neighborhood? As experienced home addition contractors serving the Seattle Eastside since 2010, we help families add the space they need. Whether you need a bathroom addition, an extra bedroom, a second story, or a complete master suite, we deliver custom home addition solutions that seamlessly integrate with your existing architecture.

Our home addition services include complete design, engineering, permitting, and construction all under one roof.

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

Stay in the Home You Love and Get the Space You Need

Moving is expensive, stressful, and disruptive. As home addition builders, we help you create the space you need while staying in the neighborhood you love. Here’s what we offer:

Single Room Expansions

Room additions are the most cost-effective way to add space. Common room addition projects include:

• Family room additions to create a casual living space for daily activities, homework, or entertaining. 
• Sunroom additions with abundant natural light to bring the outdoors in while protecting you from the weather.
• Dedicated workspace for remote workers who need a professional space with privacy and quiet.
• Master bedroom additions to expand your primary bedroom with walk-in closets, private access to outdoor spaces, or larger bathrooms.
• Flexible bonus rooms to serve as playrooms, craft rooms, gyms, or guest rooms.

Bathroom Expansions

Adding a bathroom is one of the highest-ROI home improvements. Whether you need a second bathroom for a growing family or a luxurious master bath retreat, our bathroom addition contractors deliver expert design and installation.

As bathroom addition contractors with 15 years of experience, we handle everything from proper ventilation to moisture barriers to ADA-compliant layouts.

Second Story Additions

Second-story additions dramatically increase your living space without sacrificing yard space. These vertical expansions are often the most cost-effective way to add multiple rooms since you’re building on your existing footprint.

Second Story Additions May Include:

• Complete second floors (1,000-2,000+ sq ft)
• Master suite additions above garages
• Second story over single-story wings
• Dormers and raised roofs for existing second floors

Not all homes can support second-story additions. We conduct thorough foundation and structural assessments before design begins. 

Bump-Out Additions

Bump-out additions extend existing rooms by 3-8 feet, adding usable space at a fraction of the cost of a full addition. These targeted expansions solve specific space problems beautifully.

• Less expensive than full room additions
• Often don’t require new foundations
• Minimal disruption during construction
• Dramatic improvement in room functionality
• Can totally transform cramped spaces

Multi-Room Additions

When you need significant space, multi-room additions create entire new wings with multiple rooms designed as cohesive units. Common examples include adding a master suite, an in-law suite, a family wing, or a guest wing. Multi-room additions often cost less than buying a larger home and provide better ROI.

Covered Porch Additions

Covered porches extend your living space outdoors while providing weather protection. As home addition contractors who also specialize in decks and patio covers, we can create integrated indoor-outdoor living solutions. 

Why We’re the Best Home Addition Contractors on the Eastside

✓ Expert home addition contractors with 15+ years of Eastside experience
✓ Top-Rated Pro on HomeAdvisor
✓ We know Snohomish & King County codes
✓ Custom home addition designs in 3D, see before we build
✓ Licensed, bonded, fully insured addition contractors
✓ Woman-owned home addition company with female crew members
✓ 5-year workmanship warranty on all additions
✓ Also build decks & patio covers for complete outdoor projects
✓ Free estimates with transparent, itemized pricing
✓ Military discount available

Ready to Add the Space You Need?

We’re here to answer all your home addition questions. Schedule your free estimate today. 

Local Home Addition Contractor Since 2010

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