Gallagher Co.
Home builder in Mercer Island, WA 98040
About this company
Gallagher Co. is listed as a home builder at 3010 77th Ave SE Ste 202 in Mercer Island, Washington, in King County. It is one of 21 general contractors in ZIP 98040.
Other construction companies nearby
Datta Homes3040 78th Ave SE, Mercer Island
0.1 mi(855) 553-2882
Bayley Construction8005 SE 28th St, Mercer Island
0.2 mi(206) 621-8884
Isola Homes13555 SE 36th St Ste 320, Bellevue
0.4 mi(206) 737-9700
JayMarc Custom Home Builder7525 SE 24th St, Mercer Island
0.4 mi(844) 226-4262
RKK Construction Inc3056 70th Ave SE Ste 2613, Mercer Island
0.5 mi(206) 236-2920
Housing market around ZIP 98040
Figures describe the local area, not this company.
Typical home value$2,213,000−0.8% past year · +88% in 10 years
Typical rent$2,796+4.8% past year
12-month value outlook−0.3%Roughly flat
New homes permitted, 20258,505King County
Days to sale agreement27Seattle metro · 21 a year ago
Listings with a price cut34.2%Seattle metro
Sale price vs list99.3%Seattle metro
New construction sales417Seattle metro, Aug · −34% from last year
Source: Zillow (home values, rent, outlook and metro sales), data through Sep 2026. Permits: U.S. Census Bureau.
Typical home value, last 10 years
Source: Zillow Home Value Index, Sep 2026.
Local building angle: King County permitted 8,505 new homes in 2025, including 5,102 apartment units. 22% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.