Historic Commonwealth Building Office
For Lease
Contact for pricing
421 Southwest 6th Avenue, Portland, OR 97204
Iconic Portland office building with modern architectural significance.
Space SizeContact for details
Days on Market263
Property Features for 421 Southwest 6th Avenue
General Information
Standard status
Active
Property subtype
Office
Listing Agency:
CBRE - Portland
(503) 221-1900
Listed By:
Kevin Kaufman · License #137614
(503) 221-1900
Source:
Cbre
Added: Nov 22, 2025
Changed: Aug 8
Last Checked: Aug 8 at 4:56AM
Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of CBRE - Portland
Investment Insights
Based on property information with market context.
The Commonwealth Building, constructed in 1948, represents a significant advancement in modern architecture. Designed by architect Pietro Belluschi, this building is recognized as a notable example of commercial architecture in Portland and was named as one of the fifty most significant buildings constructed in the United States during the 1900s. The property is located in the Central Business District and has a total size of 125,827 square feet.
Key Highlights
- Designed by world‑renowned architect Pietro Belluschi.
- Named one of the 50 most significant buildings constructed in the U.S. during the 1900s.
- Revolutionary advance in modern architecture.
Property Analytics
Property Profile
Current Use
Lease Details
NNN (Triple Net)
Lease Type
Location Intelligence
Trade Area within ½ mile
12,966
Businesses Nearby
Explore this area
Business Placement
Demographics for 97204, OR
1,001
Population
441
Households
2.3
Avg Household Size
40
Median Age
14%
College-Educated
90%
High-School Grad
0.2 sq mi
ZIP Area
5,005
Density / Sq Mi
$16,875
Median Earnings
$783
Median Rent
Market
Lease Benchmarks for Portland, OR
$34.07 /SF/Yr
Avg Asking Price
$12–$180 /SF/Yr
Price Range
26,106 SF
Avg Space Size
Vacancy Rate% for Office in Portland, OR
Questions? Ask Rey
Realmo’s AI knows this listing — price, zoning, demand, history. Ask anything.
Frequently Asked Questions
What type of property is this?
Office building - Iconic Portland office building with modern architectural significance.
Where is this office building located?
The property is located at 421 Southwest 6th Avenue Portland, OR.
What are key features of this property?
This property features: Designed by world‑renowned architect Pietro Belluschi.; Named one of the 50 most significant buildings constructed in the U.S. during the 1900s.; Revolutionary advance in modern architecture.
