Gallagher Co., LLC

Gallagher Co., LLC Specializing in custom homes and large remodels, Gallagher Co. is located on Mercer Island and owned/managed by Mercer Island residents.

Gallagher Co strives to be the home builder of choice in Mercer Island and the West Bellevue area. With over 30 years of combined construction experience, our team of custom builders are focused on paying attention to the smallest of details, imparting unprecedented value in every project we touch. We pride ourselves on impeccable quality from preconstruction through project closeout. We are commi

tted to having your experience be a smooth and easy process and your satisfaction is paramount to us.

From the custom millwork and detailed trim profiles to the stone slab installation and integrated appliance detailing, e...
06/08/2026

From the custom millwork and detailed trim profiles to the stone slab installation and integrated appliance detailing, every finish was selected and executed with timeless craftsmanship in mind
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#1920

Restoring the character of this 1920s home while bringing new life to every detail. This custom library was thoughtfully...
06/01/2026

Restoring the character of this 1920s home while bringing new life to every detail. This custom library was thoughtfully constructed to feel original to the home, featuring handcrafted millwork, integrated lighting, a rolling ladder system, and rich finishes that honor the timeless architecture of the space
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#1920

The island sets the tone for the entire kitchen. Sized for prep, seating, and everyday flow, while keeping the space ope...
05/11/2026

The island sets the tone for the entire kitchen. Sized for prep, seating, and everyday flow, while keeping the space open to the view! Everything in this space works perfectly together, cheers! 🥂
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Primary bathroom goals ✨•••Architecture: Interior Design: •••
05/04/2026

Primary bathroom goals ✨
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Address

3010 77th Avenue SE Suite 202
Mercer Island, WA
98040

Opening Hours

Monday 7am - 5pm
Tuesday 7am - 5pm
Wednesday 7am - 5pm
Thursday 7am - 5pm
Friday 7am - 5pm

Telephone

(206) 232-1600

Website

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