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After completing two years in the US Marine Corps, a decorated tour in Vietnam, and being honorably discharged at the rank of E-5 (Sergeant) with six months in grade, Mr. Esser began his roofing career in 1971 in Covina, California. Starting as a laborer (kettle tender), Mr. Esser experientially worked his way to the position of company superintendent in less than three years. In 1975, Mr. Esser moved to San Clemente, California and qualified for California State Contractor's License No. 316362 (C-39 Roofing) on March 3, 1976. On March 4, 1976, Mr. Esser founded Esser Roofing Company (ERC). ERC was sold for profit in 1979 with no loss to creditors.

In 1981, Mr. Esser founded Commercial Roof Management, Inc. (CRM) located in Irvine, California. CRM is an independent consulting and roof management firm specializing in preventive maintenance. In the mid 80's, CRM had regional offices in Texas, Washington, Oregon, Arizona, Northern and Southern California. At the time CRM was viewed as the largest roof consulting entity in the United States. Over time, all regional offices (excluding Irvine) were either closed or sold to employees. As President and CEO, Bill oversaw the day to day operations of a staff that varied in size from 35 to over 50 employees.

Annual CRM was directly responsible for overseeing and maintaining the watertight integrity of over $500 million dollars in roofing asset value. Services included;

  • conducting annual inspections
  • performing routine and annual preventive maintenance
  • production of new and re-roofing guideline specifications
  • production of annual budget reports to all clients
  • Bid solicitation
  • In-Progress job supervision, quality control and tenant improvement interaction.
  • Conducting pre-acquisition due diligence surveys (nationally)
  • Expert witness services
  • General consulting
  • Structural water intrusion forensic investigations
  • Insurance third-party claim analysis

On May 1, 2004, Bill sold controlling interest in CRM to his close friend and then General Manager, Dan King. Mr. King, a licensed roofing contractor, had been a Senior Staff Consultant employed with CRM for over twenty years.

In 1994, Mr. Esser founded the sole proprietorship of Esser & Associates (E&A). E&A is a professional service organization, offering general roofing consulting, expert witness testimony and cost estimating primarily in construction defect litigation, personal injury matters, and insurance related disputes.

In June 2000, Mr. Esser assisted in drafting the State of California's licensing examination for C-39 roofing contractors. Mr. Esser has been certified by the State of California as an Industry Expert and participates on an as needed basis. Mr. Esser has also provided adjudication services as an independent third-party Umpire and Appraiser. Mr. Esser is available as a “specialist mediator” non-legal (mediating roofing-related disputes). Over the past thirty years, Mr. Esser has testified in deposition, Federal and Superior Court, as well as binding arbitrations.

Mr. Esser is a published author and an authority on Roof Management, concepts and implementations. His Articles have appeared in the following publications:

  • CALIFORNIA INN TOUCH Magazine (March/April 1985)
    • Roof Management - "Out of Sight, Out of Mind"
  • BUSINESS TO BUSINESS Magazine (February 1985) "The Sky Is Falling"
  • COMMUNITY LIFE Magazine (November 1983) "Leak-Proof Advice"
  • ORANGE COUNTY APARTMENT NEWS (January 1985) "Out of Sight, Out of Mind"

Mr. Esser is a past/present member of:

  • Construction Specifications Institute (CSI)
  • National Roofing Contractor's Association (NRCA)
  • Western States Roofing Contractor's Association (WSRCA)
  • International Conference of Building Officials (ICBO)

Mr. Esser has:

  • TESTIFIED 12+ as an Expert Witness in Federal Court, Superior Court, Binding Arbitration and 50+ depositions.
  • OVER forty-three (43) consecutive years of roofing experience
  • BEEN a licensed C-39 roofing contractor (#316362) since March, 1976
  • OVER thirty-eight (38) years experience as a Licensed Contractor
  • OVER thirty-three (33) years experience as a Forensic Consultant
  • SERVED as an Insurance Umpire and an Appraiser in claim disputes.


In January, 2007 California State Contractor license #316362 was voluntarily retired to inactive status. Prior to that time, it had been maintained continuously in good standing for over thirty-one (31) years without a single complaint and/or licensing violation.

Mr. Esser has conducted educational workshops for:

’85 RENTAL HOUSING EXPO - Angel Stadium, Anaheim, CA June 2, 1985
Title: Everything You Wanted To Know About The 'Outside' Of Your Building

Rental Owners Course
Title: Everything You Should Know about Roofing (But were afraid to ask)

Physical Plant Workshop & Trade Show, Northridge, CA

BEVERLY ENTERPRISES, INC. (Convalescent Hospitals) June 25, 1986
Title: Roofing - Asset or Liability?

PACIFIC BELL, Pasadena, CA January 15, 1988
Title: Roof Maintenance & Emergency Repair Workshop

PACIFIC BELL, Riverside, CA June 29, 1988
Title: Roof Maintenance & Emergency Repair Workshop

R & B COMMERCIAL MANAGEMENT CO., Los Angeles, Ca June 29, 1989
Title: Emergency Repair & Preventive Maintenance Workshop

Title: Management by Plan vs. Management by Crisis

Spring Fraud Conference, Portland, OR March 1, 2005
Title: Gone With The Wind



  • Attended Northview High School, Covina, CA (graduated- 1968)
  • Attended Citrus College, located in Glendora, CA (no degree)
  • Attended Mt. San Antonio College, Walnut, CA (no degree)
  • Attended Roofing Industry Educational Institute seminars and workshops (numerous).
  • Attended Roofing Consultants Institute seminars and conferences.
  • Attended various roofing material manufacturer's training seminars and facility tours.
  • Maintains an extensive library of roofing information dating back over 35 years.



  • Built-up Roofing (BUR) - gravel, mineral cap, SBS, torch applied APPs, EPDM, TPO, peel-n-stick, all types and all aspects of
  • Shingling - Cedar shakes, shingles, laminates, composition asphalt, all types, and all aspects of
  • Tile - clay two piece, "S" & concrete, cement fiber, slate, asbestos, all types, all aspects of
  • Waterproofing - above & below-grade, parking structures, traffic decks walking decks, all types and aspects of
  • Cold applied membrane applications, sprayed in–place foam (PUF) and reinforced elastomeric coatings (acrylics & Urethanes) all types and aspects of
  • Metal roofing - Standing seam, Architectural Steel, Stone-coated Steel, metal & concrete roof decking all types and aspects of
  • Sheet metal - as components of, and/or related to roofing, siding, waterproofing and exterior building flashing details. all types and aspects of


  • 40 years experience estimating commercial, industrial, institutional and residential roofing
  • 39 years of roofing sales experience - all types of roofing systems and roofing materials
  • Been a California employer and/or S Corporation for over 35 years. Never missed a payroll or tax payment.


1971 - 1972: Apprentice roofer for Hughes Roofing Co., Glendora, California.Achieved foreman status

1972 - 1974: Roofing foreman for Holly Roofing Company, Baldwin Park, California.Achieved Company Superintendent Status

1974 - 1975: C. Smith Construction Company, Mission Viejo, California.Responsible for direct on-site supervision of general construction crews including; rough framing, concrete (forming & finish), plumbing, electrical, drywall, insulation, exterior water and weatherproofing, below-grade waterproofing, roofing (all types).Provided customer consultation on roofing options, applications, and architectural detail modifications. Performed installations, all types.

1976 - 1980: Founder & Sole Proprietor of Esser Roofing Company & California Gutter Company located in San Clemente, California.Both companies were sold for profit in 1980 at no loss to creditors

1980 - 1981: Partner in Trans-Continental Roofing Consultants with Gerald Wilson. Company was dissolved at no loss to creditors.

1981: National Roofing Consultants, Glendora, California, employed as Senior Consultant and Director of Roof Management.Provided general consulting services including; surveys, forensic investigations, specification development, expert witness services.Established and oversaw roof management programs for corporate and institutional clients.

1981 - 2004: Founder, majority stockholder, CEO / President of Commercial Roof Management, Inc., Irvine, California.Responsibilities include overseeing all corporate operations, and staff of 50+ employees.

Duties included:

  • Overseeing day-to-day operations of corporation
  • Hiring and training of staff consultants
  • Provided expert witness & litigation forensics, research, marketing
  • Consultation on all aspects of roofing and structural waterproofing
  • Conducted work shops and in-house training seminars for institutional and educational clientele.

Company sold for profit on May 1, 2004 at no loss to creditors

1994 – present: Owner and Sole Proprietor of Esser & Associates located in San Juan Capistrano, California. E&A provides roofing, waterproofing and sheet metal expertise, water intrusion forensics, construction standards of care consultation, educational workshops, seminars and expert witness / litigation support.

2008 – 11/ 2010: Merger with Roofing & Waterproofing Forensics, Inc., located in Yorba Linda, CA.Served as Senior Roofing Consultant and RMO.

11/2010 to Present: Owner and Sole Proprietor of Esser & Associates located in San Juan Capistrano, California.



Equitable Mgt. & Consulting

City of Norwalk

American Savings & Loan

Management Services Company

American Brand Foods

Department of Consumer Affairs

Business Properties, Inc.

McKay Realty Consultants

American Diversified

Arnel Development

Alpha Beta Stores

Charles Dunn Company

Beverly Enterprises, Inc.

Cornwall& Associates

Fisher Corporation

Starkey Company

WATT Industries

U.S. Postal Service


Public Storage

CB Richard Ellis, Inc.

WED Enterprises

C.L. Peck Construction

Seeley\Wolff Property Mngt.

Condominium Management Co.

Mercury Property Management

Orange Diocese/Roman Catholic Church

The Prudential Property Co.

Aerojet General Corporation

L.A. County Sanitation District

Hartfield- Lawry`s Foods, Inc.Zody's

MacFrugals Bargan / Close-outs

PNS Stores, Inc

Steiner Corporation

Lee & Associates

Litton Industries

Japanese Village

Market Basket Stores


Foster & Kaiser

Hughes Aircraft

William Lyons Company

Trammell Crow Company

TCW Realty Advisors

Pacific Outdoor Advertising

Western Capital Resources

United Parcel Service

Dunn-Edwards Corporation





Arthur Rubloff & Co.


Cloth World


AVCO Community Developers

Owens/Illinois (Nekoosa Packaging)

Cal. State University-Northridge

Loyola Marymount University



W&S Management

Vagabond Hotels, Inc.

The Port of Seattle

Property Management Services



Mission Viejo Company

Howard Johnson

OMF Property Management

Norton Electric

Devine Property Management

Pathfinder Services


Our Clientele