Building Amenities
Landscaped rooftop terrace
Unobstructed rooftop views of Puget Sound and Lake Union
Tenant exterior decks and terraces
Bike storage
Tenant lockers
Tenant shower areas
Building Sustainability
Net Positive Energy
On-site and off-site solar panels generate 105% of the building's total energy use.
Award-Winning Sustainability
400 Westlake was recognized as NAIOP Sustainable Development of the Year in 2024 and received a LEED/Petal Certification.
A Leader in Energy Efficiency
The design uses 35% less energy than a typical office building and 25% less than Seattle Energy Code Targets.
Optimized Water Systems
The building collects 100% of its rainwater, which—along with recycled water—is treated and repurposed for non-potable uses.
Managed by Urban Renaissance Group
The information contained herein has been obtained from sources deemed reliable but has not been verified and no guarantee, warranty or representation, either express or implied, is made with respect to such information. Terms of sale or lease and availability are subject to change or withdrawal without notice. 12186721179 • 07/2026