Leah Manbeck, Founding Principal and President


Shari Zimmerman, Retired Founding Principal

We LISTEN. We value the expertise of every team member. We encourage the best ideas from owners, clients, stakeholders, consultants and contractors.

We are RESPONSIVE to our clients and dedicated to our projects. We give it our all. And a firm principal will always be your direct point of contact.

We are FLEXIBLE. We know through experience that multi-stakeholder projects are sometimes like grappling with a living organism. We can adjust to hit moving targets.

We have GOOD BALANCE. We juggle lofty design and place-making ideals with the practical realities of budget and maintenance limitations.

We are GOOD DESIGNERS. We create places that are functional, beautiful and timeless – places that meet the needs and express the vision of the owner.

We MEET DEADLINES and insist on preparing a coordinated and thoughtful set of construction documents.


Established in 2004, GBtwo is a custom landscape architecture firm located in the Cattletrack Arts + Preservation Compound in Scottsdale, Arizona.

6115 N. Cattletrack Road Scottsdale, AZ 85250 (480) 991-3384

(480) 991-3384

Cattletrack Arts + Preservation Compound