Southern California - Corporate Offices
5415 East La Palma Avenue
Anaheim Hills, California 92807
Phone: [714] 701-9180
Fax: [714] 701-9182

San Jose - Northern California Region
2033 Gateway Place
Fifth Floor
San Jose, California 95110
Phone: [408] 850-2139
Fax: [408] 850-0178

Bay Area Offices
6200 Stoneridge Mall Road
Third Floor
Pleasanton, California 94588
Phone: [925] 218-4589
Fax: [925] 218-3397

2121 N. California Boulevard
Suite 290
Walnut Creek, California 94596
Phone: [925] 974-3610
Fax: [925] 974-3506

Palm Springs Region
555 South Sunrise Way
Suite 200
Palm Springs, California 92264
Phone: [800] 482-1822

Southern Nevada Offices
7251 West Lake Mead Blvd., Suite 304
Las Vegas, Nevada 89128
Phone: [866] 705-6964
Fax: [702] 562-4001

Southern Region Offices
2375 E. Camelback Road
Fifth Floor
Phoenix, Arizona 85016
Phone: [800] 305-6440
Fax: [800] 305-9373

4801 Woodway Drive
Suite 300 East
Houston, Texas 77056
Phone: [713] 264-8221
Fax: [713] 264-8219

Central Region Offices
4600 South Syracuse
Ninth Floor
Denver, Colorado 80237
Phone: [800] 248-4096
Fax: [800] 303-7176

Please click here for our Construction Expert Witness Directory

Construction Experts Group


Email Directory
Forensic architecture
John M. Springman John Springman
Master of Architecture, University of Illinois
Licensed Architect, California
Licensed Architect, Colorado
Licensed Architect, Nevada
Licensed Architect, Texas
NCARB Certification
California Supplemental Examination Commissioner, California State Board of Architects

Email: johns@berthowe.com
 
Contact

Stan Bezue Stan Bezue
Bachelor of Architecture, Southern University, Baton Rouge, Louisiana
Licensed Architect, California
Licensed General Building Contractor, B-00846803, State of California
Member, American Institute of Architects

Email: stanbezue@berthowe.com
 
Contact

Matthew J. Nardella Matthew J. Nardella
Licensed Architect, State of California
Registered Residential Designer, State of Nevada
Bachelor of Architecture, California State Polytechnic University, Pomona
California Supplemental Oral Examination Commissioner, California State Board of Architectural Examiners
Organizational Member, American Concrete Institute

Email: mattn@berthowe.com
 
Contact

John B. A. Mancini John B. A. Mancini
Licensed Architect, California
Licensed General Contractor — B, State of California
California Supplemental Examination Commissioner, California State Board of Architects
Certificate, High Density Urban Planning, Urban Land Institute
Guest Speaker, American Society of Consulting Engineers (Forensic Evidence Collection)

Email: johnm@berthowe.com
 
Contact

Douglas F. Gorrie Douglas F. Gorrie
Licensed Architect, California
Licensed Architect, Nevada
Licensed Architect, Arizona
Licensed Architect, Texas
NCARB Certified
Organizational Member, American Concrete Institute
Bachelor of Architecture, University of Oregon

Email: dougg@berthowe.com
 
Contact

Jorge Porter Jorge Porter
Licensed Architect, California
Licensed Architect, Mexico
Bachelor in Architecture, Escuela Mexicana de Arquitectura, La Salle University, Mexico City, Mexico

Email: jorgeporter@berthowe.com
 
Contact

John Sorcinelli John Sorcinelli
Licensed Architect, State of California
Registered Architect, British Columbia, Canada
Registered Architect, United Kingdom
Registered Architect with NCARB
Member of the American Institute of Architects
Member of the Royal Institute of British Architects
Vice Chairman Royal Institute of British Architects, Los Angeles Chapter
Member of the Architectural Institute of British Columbia
Founder and President of the San Dimas Marketplace, Inc. (non-profit)

Email: johnsorc@berthowe.com
 
Contact


General Contracting
John D. Tolman John D. Tolman
Licensed General Building Contractor, B-410125, State of California
Licensed Real Estate Broker — California
Doctorate of Law — Western State University
Bachelor of Science, Law — Western State University
Bachelor of Arts — University of Redlands
Member — American Bar Association
Member — Building Industry Association
Member — American Society of Professional Estimators
Member — Construction Specification Institute
Member — Association of General Contractors

Email: johntolman@berthowe.com
 
Contact

ALAN D. STURM
Experienced in residential, commercial and catastrophic property claims with certifications from National Flood Insurance Program (NFIP), California Earthquake Authority (CEA), State Farm, Allstate, Tower Hill, Liberty Mutual, St. Paul/Travelers and Licensed Insurance Adjuster in Five States
Email: alansturm@berthowe.com
 
Contact

Donald W. MacGregor DONALD W. MACGREGOR
Licensed General Building Contractor, B-900929, State of California
Licensed General Contractor, All Structures: Oregon
Member, International Conference of Building Officials
ICC Certified Building Inspector (IBC), #5028454-B5
ICC Certified Building Inspector (UBC), #5028454-10
Certificate — 11CRC & AGGIH Mold Remediation in Buildings
Member, American Society of Professional Estimators (ASPE)
Member, Construction Specification Institute
Member, International Conference of Building Officials

Email: donm@berthowe.com
 
Contact

David L. Suggs DAVID L. SUGGS
Licensed General Building Contractor, B-778968, State of California
Certified Waterproofing Applicator
Member, American Society of Professional Estimators
Member, Construction Specifications Institute

Email: davidsuggs@berthowe.com
 
Contact

Gary Ray Gary Ray
Master of Business Administration, Major: Construction Management, Alameda University
Licensed General Contractor — B, State of California
Licensed General Contractor — Engineering A, State of California
International Code Council, Contributing Council Member
International Code Council, Certified International Residential Inspector
American Society of Safety Engineers, Certified Member, Safety Trained Supervisor
4-Year Apprenticeship Program, Journeyman Carpenter (Union 2203)
4-Year Apprenticeship Program, Journeyman Electrician

Email: garyray@berthowe.com
 
Contact

Brian Vann BRIAN VANN
Bachelor of Arts Degree, Architecture, University of California, Berkeley
IICRC-Certified Water Restoration Technician, Applied Microbial Remediation Technician
Instructor, Santa Fe Community College, Santa Fe, New Mexico
Instructor, University of Colorado Center
Certified Estimator, Xactimate

Email: brianvann@berthowe.com
 
Contact

Jack Taylor JACK J. TAYLOR
Licensed General Contractor, State of California
Licensed Concrete Contractor, State of California
Certificate of Graduation in Construction Cost Estimating from Career Management Institute
Carpenter’s Apprenticeship Program - San Bernardino Valley College
Member American Society of Professional Estimators
Certified Waterproofing Applicator
Certificate-IICRC & AGGIH Mold Remediation in Buildings

Email: jacktaylor@berthowe.com
 
Contact


Civil/Structural Engineering
Mark Chapman MARK CHAPMAN
Bachelor of Science, Civil Engineering, 1991, California State University, Long Beach
Registered Civil Engineer for California, 52142, 1994
Registered Civil Engineer for Arizona, 36022
Registered Civil Engineer for Nevada, 014532
Licensed General Building Contractor, B-632445, State of California

Email: markc@berthowe.com
 
Contact


Roofing & Waterproofing
Kevin Heidelberger KEVIN HEIDELBERGER
Licensed Roofing Contractor, C39-539648, State of California
Licensed Roofing Contractor (C15A), State of Nevada
Certified Waterproofing Applicator
Instructor — Tile Roof Institute
Member, Tile Roof Institute
Member, Western States Roofing Contractors Association (WSRCA)
Certified Installer — Tile Roof Institute
Certified Specifier — Tile Roof Institute
Carlisle Waterproofing — Certified Inspector

Email: kevinh@berthowe.com
 
Contact

Bradley W. Hughes BRADLEY W. HUGHES
Licensed General Building Contractor, B-00723912, State of California
Licensed Roofing Contractor, C39-00723912, State of California
Graduate, Control Data Institute, Anaheim, CA
Associate of Science Equivalence Diploma computer technology
Member, Construction Specifications Institute
Tile Roofing Institute Certification

Email: bradh@berthowe.com
 
Contact