your trusted partners

We remain a top Southern California accounting firm through an unmatched dedication to quality service.

SINCE

1979

Our Mission

Soren Ahern and Christenson was founded in 1979 in San Bernardino, California, and Ziilch, McAdam and Copeland dates back to 1950 in Redlands, California. 

From the beginning it’s been our mission to provide our clients with exceptional service through teamwork, and our employees and partners challenging and rewarding careers.

Services

Audits & Reviews

Your trusted resource for financial statement audits, reviews or compilations.
Learn more ➞

Accounting Services

We'll serve as your advisor dedicated to your long-term success.
Learn more ➞

Litigation Services

Our team has the skills to analyze, interpret and present complex financial issues.
Learn more ➞

Business Valuations

We understand that every company has unique qualities critical to it's value.
Learn more ➞

SOX Consulting

Stay in full compliance with these regulations with our outsourced SOX services.
Learn more ➞

Advisory Services

Bringing you expertise that might not be available within your management team.
Learn more ➞

Industry Experts

Our Partners

Roger E. Wadell, CPA
Lucia A. Whyte, CPA
Charlie Lowenberg, CPA
Joseph Horzen, CPA
Jason B. Lewis, CPA
Katie Vander Veen, CPA