Expert Custom Home Building in Mercer Heights, Mercer Island, WA

Gallagher Co. Construction brings thoughtful design and reliable execution to every custom home we create in Mercer Heights, Mercer Island, WA. For more than 20 years, we’ve helped families throughout the area move from concept sketches to finished homes that genuinely reflect how they want to live. Our process prioritizes collaboration at every turn. We listen carefully to understand what matters most to you, then apply our construction expertise to make it real. Whether you’re planning a lakeside retreat, a modern urban residence, or something entirely unique, our team has the experience to handle the complexity while keeping the process manageable. Call us at 206-232-1600 or contact us online today to discuss your custom home ideas in Mercer Heights, Mercer Island, WA.

Our Services

Experience the pinnacle of luxury living with bespoke spaces masterfully built by Gallagher Co.

4d507778802d983c9e5f9717687a75d53f75dc0e.png

Custom Homes

Experience the ultimate in personalized living with our custom home construction services. We turn your dream home into reality with unrivaled craftsmanship and quality.

c83019700326d0826f07a6798301e56489b138f1.png

Remodels

Revitalize your living space with expert remodeling services. From single rooms to whole-home transformations, we’ll enhance your home’s comfort, beauty, and value.

b72515ea9c068d98d9b9da80af9ac64838790573.png

Outdoor Living

Extend your living space into Washington’s famous natural beauty with custom outdoor living solutions. We create patios, decks, outdoor kitchens, and more to elevate your lifestyle.

16b2f532acec7c956d85c47c56d9ef42ea05d6bf.png

Commercial

Tell your company’s one-of-a-kind story through bespoke commercial construction. We’ll bring your vision to life, supporting your goals and impressing your clients.

Spectacular Custom Waterfront Estates in Mercer Heights, Mercer Island, WA

Imagine starting every morning surrounded by stunning water views in a residence built specifically around your preferences. Gallagher Co. Construction excels at creating bespoke waterfront properties that combine architectural excellence, premium materials, and seamless connections between interior and exterior spaces for an unmatched Mercer Heights, Mercer Island, WA, lifestyle. Our specialized knowledge ensures your custom waterfront home captures expansive vistas while maintaining seclusion and tranquility. Discover what elevated lakeside living means with Gallagher Co. Construction. Every Mercer Heights, Mercer Island, WA, custom home we construct reflects meticulous attention to detail, superior quality, and your one-of–a-kind way of life.

Elevate everyday living with thoughtfully designed custom properties

Residential

Enjoy a custom home that reflects your style and enhances daily living.

Commercial

Create innovative spaces that impress clients and support growth.

Waterfront

Experience serene, private retreats with breathtaking waterfront views.

Outdoor Spaces Designed for Mercer Heights, Mercer Island, WA, Living

Mercer Heights, Mercer Island, WA, offers incredible natural beauty, and your property should help you enjoy it. Gallagher Co. creates outdoor living areas that become true extensions of your home — spaces you’ll actually use throughout the year, not just admire from inside. We’ve designed covered patios that provide shelter during unpredictable weather, built outdoor kitchens that make entertaining effortless, and constructed fire features that keep gatherings going after sunset. Each project starts with understanding how you envision using your outdoor space, then we handle the technical details that make those spaces comfortable and functional. To create an outdoor area that fits Mercer Heights, Mercer Island, WA’s climate and your lifestyle, contact us for a consultation.

Endless Possibilities with
gallagher construction

Gallagher Co. has built enough commercial properties in Mercer Heights, Mercer Island, WA, to know that every business has unique operational needs. A dental practice requires different spatial planning than a boutique retail store. A restaurant kitchen has specific ventilation and plumbing demands. We take time upfront to understand workflow patterns, customer movement, employee needs, and growth projections before finalizing any design. This planning phase prevents expensive change orders later and creates spaces that support efficient operations from day one. We’ve completed countless professional offices, hospitality venues, and more throughout Mercer Heights, Mercer Island, WA, each designed around how that specific business functions. If your company is outgrowing its current space or you’re opening a new location, contact us to discuss commercial construction that supports your operations.

Testimonials

A Personalized Custom Construction Experience in Mercer Heights, Mercer Island, WA

Gallagher Co. Construction isn’t the biggest builder in Mercer Heights, Mercer Island, WA, and that’s intentional. We limit the number of projects we take on so our leadership team stays directly involved with each build. When you call with a question, you reach someone who knows your project details. When an issue comes up on site, we address it immediately rather than letting it cascade into bigger problems. We’ve built strong working relationships with inspectors, suppliers, and subcontractors throughout Mercer Heights, Mercer Island, WA, which translates to smoother permitting, better material pricing, and reliable scheduling for your project. After 20 years, we’ve learned that attention to detail and responsive communication matter more than volume. Ready to work with a builder who treats your project as a priority? Call us at 206-232-1600 or contact us online to schedule a consultation.

Are you ready to build your dream home?

Schedule a Consultation