Celebrating Our Past, Present, and Future

We have exciting news!

The Principals of Williams + Paddon Architects + Planners are pleased to announce our merger with 19six Architects, one of the oldest architectural firms in California.

19six specializes in Education and Healthcare markets, both complementary to the markets W+P currently serves. The firm is based in San Luis Obispo, CA, and now has eight offices across the state: San Luis Obispo, Santa Barbara, Corona, San Francisco, Santa Cruz, San Jose, Sacramento, and Roseville. We are joining one team with over 100 employees who all share a passion for design excellence. This will expand our reach and add a broader network of staff to work with us as we grow together. Equally important, we share similar cultures, values, and vision. As a result of this deep network and aligned culture, W+P staff will have new opportunities for career growth and new resources for learning and development.

Our principals, Jack Paddon, Terry Green, Greg Tonello, and Naaz Alikhan, are excited to join forces with 19six Architects; the company brings stability and resources which will enhance our work. To everyone we work with, fundamentally, it will be “business as usual.” We will continue our presence in this region with our two offices (Roseville and Midtown Sacramento). We will maintain our current client services, and personnel will not change. We’re excited to continue our active membership in the communities we helped build and grow with over the last forty years.

We look forward to this new chapter and to continuing our legacy of excellence in design services for our many clients.


“Williams + Paddon is honored to blend our 40+ year legacy in Northern California with the service excellence 19six Architects has provided to its client base for more than 116 years. This combination of two great companies will provide enhanced design services to our clients across California and increased collaboration opportunities for our valued employees.”

—Jack Paddon AIA, Founding Principal

“Partnering with 19six will strengthen us, together we become more competitive in the ever-changing architectural landscape.”

—Naaz Alikhan, Managing Principal 

“19six has an established reputation in Education and Health Care market sectors throughout California. W+P will add Housing, Hospitality, and Interior Design to the mix. As a result, we can draw from a broader base of Design talent and marshal more resources, ultimately benefiting our clients.”

—Terry Green AIA, Design Principal 

“We see this as an outstanding opportunity to blend the significant architectural design and services of 19six and W+P to better serve our clients and communities. The merger will strengthen individual and collective market expertise and increase the depth of resources within the combined eight office locations.”

—Greg Tonello AIA, Principal 

“As Williams + Paddon joins 19six Architects, it truly brings together two legacies of design excellence. The joining of our two firms is exciting. There is so much added talent and expertise to this team that I am enthusiastic about our future.”

Alan Kroeker, President of 19six Architects

For more information about Williams + Paddon Architects + Planners joining 19six Architects, please contact Jon Jaeger, Marketing & Business Development Director at [email protected].