Mayo 420

Tulsa, Oklahoma

Before it was abandoned, the historic Mayo 420 Building (circa 1910) was a landmark in downtown Tulsa, housing ten stories of top-of-the-market office space. Years of abuse and neglect took their toll on the structure, resulting in a caved-in roof and other problems. KKT’s design team took the bones of the existing building and brought it back to life, restoring it to its original historic grandeur and elegance. Its ten stories now consist of 67 coveted loft apartments, first floor retail space, the downtown YMCA on the first floor and basement, and a rooftop terrace.

This project has received considerable praise, winning 5 notable historic preservation awards:

Timothy Anderson Award for Excellence in Historic Rehabilitation (the National Housing & Rehabilitation Association, 2012),
Best Historic Rehab Using New Market Tax Credits (2012),
Citation of Merit (State Historic Preservation Office, 2011),
Tulsa Preservation Award (Tulsa Preservation Commission, 2011) and the
Zenith Award (Tulsa Apartment Association).


Interior Design
Structural Engineering
Site Analysis and Planning
Construction Administration
Space Planning

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