1st & King Building

Off Market

500 1st Avenue South, Seattle, WA 98104

  • Office
  • General Office
  • 80,224 Sqft

1st & King Building, Seattle, WA 98104 - Office Space

1st & King Building is located at 500 1st Avenue South in the Pioneer Square neighborhood, WA, Seattle, 98104. The Class B Office building was completed in 1991 and features a total of 80,224 Sqft.

There are 73 office spaces for lease in the Pioneer Square neighborhood, totaling 609,018 Sqft of available office space. The office space availability for the 98104 zip code is 3,106,619 Sqft, in 224 office spaces. The average asking office rent per sq. ft. in Pioneer Square is $37.6/sqft/year. For Class A office buildings the average office rate is $42.67/sqft/year, for Class B office buildings the average office rate is $35.67/sqft/year, for Class C office buildings the average office rate is $34/sqft/year.

In Pioneer Square, there are 24 class B office buildings. In Pioneer Square, there are a total of 4 LEED certified office buildings. In 1991, the same year 1st & King Building was built, 37 more commercial properties (office, industrial, retail) over 50,000 square feet were built in Seattle, featuring 1,022,419 square feet of commercial space. At zip code level, there are 72 commercial properties, of which 72 are office buildings over 50,000 square feet.

Nearby Listings

Nearby Properties


  • City Seattle
  • Neighborhood Pioneer Square
  • Zip Code 98104
  • Market Seattle
  • Property Type Office - General Office
  • Property Size 80,224 Sqft
  • Lot Size 0.27 Acre
  • Parking Spaces Avail. 19
  • Parking Ratio 0.24/ 1,000 SF
  • Property Tenancy Single Tenant
  • Building Class B
  • Year Built 1991
  • Date Updated 05 Apr, 2020

Pioneer Square Demographics

The average household income in zip code 98104 is $80,724, from a total of 8,125 households. In terms of employment, there are 91.04 % white-collar and 8.96 % blue-collar jobs in zip code 98104.


  • Total Population4,041
  • Male Population(61.8 %) 2,496
  • Female Population(38.2 %) 1,544
  • Median Age40.00


  • Average Household Income$84,384
  • Median Household Income$59,187
  • Median Income Under 25$30,515
  • Median Income 25-44$75,478
  • Median Income 45-64$61,190
  • Median Income Over 65$43,604


Check out the links below if you're interested in other types of properties for lease or for sale in Pioneer Square: