Cascade, Seattle, WA Office Spaces for Rent

Find the best Cascade, Seattle, WA office space among 176 for rent listings currently on the market.

1515 Dexter

1515 Dexter Avenue North, Westlake, Seattle, WA
Property

Office

23,920 SF
Availability

3 Spaces

23,898 SF
For Lease

$30.00/SF/YR
View Details (opens in new window)
1265 Republican Street

1265 Republican Street, South Lake Union, Seattle, WA
Property

Office

37,358 SF
Availability

4 Spaces

37,358 SF
For Lease Contact for pricing
View Details (opens in new window)
222 Fifth

225 5th Avenue North, South Lake Union, Seattle, WA
Property

Office

197,919 SF
Availability

1 Space

6,461 SF
Year Built

2024
For Lease Contact for pricing
View Details (opens in new window)
Skyblox

618 John Street, South Lake Union, Seattle, WA
Property

Office

251,285 SF
Availability

8 Spaces

226,953 SF
For Lease Contact for pricing
View Details (opens in new window)
701 Dexter

701 Dexter Avenue North, South Lake Union, Seattle, WA
Property

Office

227,577 SF
Availability

9 Spaces

226,587 SF
Year Built

2025
For Lease Contact for pricing
View Details (opens in new window)

Cascade, 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: 17,031,000 Sq. Ft.

In 2025 the Seattle office market encompassed 17,031,000 square feet of space. Out of that total, 2,889,181 square feet were in office properties sized between 500,000 and 1,000,000 square feet. Meanwhile, 1,458,891 square feet were in office buildings sized between 50,000 and 100,000 square feet.
Class A office space makes up a 80.67% share of Seattle office inventory, while Class B office assets represent roughly 12.84% 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.	1,458,891 Sq. Ft.	8.57%
100k to 500k Sq. Ft.	11,881,240 Sq. Ft.	69.76%
500k to 1M Sq. Ft.	2,889,181 Sq. Ft.	16.96%

Seattle Office Market Breakdown by Building Quality Rating
Class	Total Square Feet	Share of Total Office
Class A+	1,066,303 Sq. Ft.	6.26%
Class A	13,739,637 Sq. Ft.	80.67%
Class B	2,187,497 Sq. Ft.	12.84%
Class C	37,563 Sq. Ft.	0.22%

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

About us

CommercialCafe is your go-to commercial real estate listing source. We partner with highly respected major brokerages from across the country to ensure high-quality listings that are updated frequently. Our online marketplace lists all commercial property types from office, coworking, retail, and industrial to special purpose properties.

CommercialCafe is a trusted Yardi brand and is an integral part of the CommercialEdge network — the fastest-growing network of online real estate marketplaces, which ranks on the 1st page of Google for all top markets, attracts more than 2 million monthly visits, and generates more than 350,000 broker contacts.

Cascade, Seattle, WA Office Spaces for Rent

1515 Dexter

1265 Republican Street

222 Fifth

Skyblox

701 Dexter

Cascade, Seattle, WA Office Inventory Breakdown

Total Office Space in Seattle: 17,031,000 Sq. Ft.

Other Popular Searches

Popular Coworking Searches

Popular Commercial Searches

About us

About Us

Our Tools