Belltown, Seattle, WA Office Spaces for Rent

Find the best Belltown, Seattle, WA office space among 386 for rent listings currently on the market.

2228-2234 1st Avenue

2228 1st Avenue, Belltown, Seattle, WA
Property

Retail

22,710 SF
Availability

1 Space

3,722 SF
For Lease

$22.00/SF/YR
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2028 & 2030 5th Avenue & 503 Lenora Street

2030 5th Avenue, Belltown, Seattle, WA
Property

Retail

16,380 SF
Availability

1 Space

4,550 SF
For Lease

$20.00/SF/YR
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801 Blanchard Street

801 Blanchard Street, Belltown, Seattle, WA
Property

Office

26,029 SF
Availability

1 Space

3,565 SF
Year Built

1925
For Lease Contact for pricing
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1916 Boren

1916 Boren Avenue, Belltown, Seattle, WA
Property

Office

282,716 SF
Availability

3 Spaces

5,161 SF
Year Built

2024
For Lease Contact for pricing
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Belltown, Seattle, WA Office Inventory Breakdown

There are a number of factors that make a city attractive for businesses to relocate or expand, as well as for investors to enhance their portfolios through local acquisitions. Among the most important factors to consider are the size and quality of the local office market, which is an essential component of the local economy.

Total Office Space in Seattle: 15,522,137 Sq. Ft.

In 2025 the Seattle office market encompassed 15,522,137 square feet of space. Out of that total, 3,651,027 square feet were in office properties sized between 500,000 and 1,000,000 square feet. Meanwhile, 609,491 square feet were in office buildings sized between 50,000 and 100,000 square feet.
Class A office space makes up a 67.14% share of Seattle office inventory, while Class B office assets represent roughly 13.26% of the market total.

Seattle Office Market Breakdown by Building Size
Building Size Range	Total Square Feet	Share of Total Office
50k to 100k Sq. Ft.	609,491 Sq. Ft.	3.93%
100k to 500k Sq. Ft.	7,613,869 Sq. Ft.	49.05%
500k to 1M Sq. Ft.	3,651,027 Sq. Ft.	23.52%
> 1M Sq. Ft.	3,295,786 Sq. Ft.	21.23%

Seattle Office Market Breakdown by Building Quality Rating
Class	Total Square Feet	Share of Total Office
Class A+	2,926,996 Sq. Ft.	18.86%
Class A	10,421,127 Sq. Ft.	67.14%
Class B	2,057,934 Sq. Ft.	13.26%
Class C	116,080 Sq. Ft.	0.75%

Data was provided by CommercialEdge, refers to properties larger than 50,000 square feet.

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Belltown, Seattle, WA Office Spaces for Rent

2228-2234 1st Avenue

2028 & 2030 5th Avenue & 503 Lenora Street

801 Blanchard Street

1916 Boren

Belltown, Seattle, WA Office Inventory Breakdown

Total Office Space in Seattle: 15,522,137 Sq. Ft.

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