Appraisal Expert Witness and Litigation Appraisers

An Elite-Rated member of the peer-voted SuperAppraisers® Global Network of expert witness appraisers.

Appraisal expert witness testimony requires highly-trained—highly-skilled—highly-credentialed review appraisers with decades of experience in providing litigation and review appraisals and prevailing appraisal expert witness testimony.

Equity Development Systems® pioneered the appraisal review profession and directed the development, writing, and implementation of the appraisal review Principals of Valuation and best practices that are taught to and in use today by professional valuers, legal experts, and government agencies throughout-the-world. Our appraisal expert witness services have allowed our clients' to prevail in Billions-of-Dollars at issue in litigation and Alternative Dispute Resolution, and our appraisal reviews have been cited by U.S. regulators as "The measure by which all review appraisals should be judged.

We hold the only RICS Expert Witness Accreditation Service (EWAS) certification in the Americas and one of only a handful of such certifications in the world.

Our discipline-specific and multidisciplinary appraisal expert witness testimony and litigation-support providers are internationally accredited ASA/MAI/RICS instructors and well-published luminaries in the global valuation community. They include Uniform Standards of Professional Appraisal Practice (USPAP) and International Valuation Standards (IVS) and RICS 'Red Book' instructors, Value Adjustment Board (VAB) Magistrates, and former state/federal appraisal regulatory compliance officers.

We provide comprehensive original opinion-of-value and rebuttal appraisal expert witness testimony and litigation support services in all disciplines of appraisal and asset classes, tangible and intangible, i.e., Real Estate, Business Valuation, Intellectual Property, Personal Property, and Machinery and Technical Services.

Our appraisal expert witness testimony and litigation-support providers conduct in-depth analyses and provide objective opinions and advice that help resolve complex appraisal and valuation issues. We advise client counsel in the preparation of appraisal related discovery, appraiser expert challenges, and appraisal and appraiser compliance with state and federal regulations, USPAP, IVS, 'Red Book', and international Basel Accords.

EDS' Appraisal Review and Management Systems® unit is headed by Executive Managing Director, Steven N. Siegler, ASA, FRICS. Mr. Siegler is an Accredited Senior Appraiser (ASA) with and was honored to serve as the founding International Chairman of Appraisal Review and Management (ARM) for the American Society of Appraisers from 2002-2011. Mr. Siegler co-authored and directed the implementation of the ASA’ Appraisal Review and Management Principals of Valuations series of courses, ARM 201, 202, 203 and 204 and best practices that are now taught to professional valuers, government officials, legal experts, and many others throughout-the-world. Additionally, Mr. Siegler holds international valuation accreditation as Fellow, Royal Institution of Chartered Surveyors (FRICS), and he is the only RICS accredited expert witness in the Americas and one of only a handful of such expert witnesses in the world holding the much-coveted RICS Expert Witness Accreditation Service (EWAS) certification.

Mr. Siegler holds TS Clearance with the U.S. Government and he is uniquely qualified to practice before U.S. Government agencies in national-security-related valuation and in other special matters. Steven is an Elite-Rated member of the peer-voted SuperAppraisers® Global Network of internationally-recognized appraisers. He has served as an appraisal expert witness in U.S. Courts, international tribunals, and Alternative Dispute Resolution, and he has successfully handled and prevailed in billions-of-dollars at issue in some of the world’s most important—high-profile—and valuable valuation cases.

Engaging the correct expert witness appraiser is critical. EDS' unparalleled level of expertise is recognized and appreciated in courtrooms and tribunals throughout-the-world.

For more information, please contact: or call 866.887.0852 Ext.703

Our Body-of-Work:

EDS is highly-active and specializes in handling complex original and rebuttal appraisal expert witness testimony and litigation-support services pertaining to:

Insurance Appraisal Clause Valuation Disputes: Original / Rebuttal Appraisals, Reviews, Arbitration, Mediation, and as Independent Umpires,

Large complex domestic and international multidisciplinary valuation disputes involving the application of cross-border and multijurisdictional appraisal laws and professional standards and guidelines, e.g., USPAP, CUSPAP, IVS, RICS ‘Red Book’, and other such governing authorities,

Valuation and valuation reviews of businesses, financial interest and quantification of economic damages in connection with: Dissenting Shareholder Actions • Appraisal Actions • Corporate Dissolution • Loss of Goodwill • Breach of Contract,

The valuing of intangible assets and the quantification and apportionment of economic damages in complex intellectual property infringements: Fair, Reasonable and Non-Discriminatory (FRAND), Defend Trade Secrets Act (DTSA), Smallest Salable Patent Practicing Unit (SSPPU), Entire Market Value Rule (EMVR), Standard Essential Patents (SEPs) and others,

Quantification of economic damages in connection with the preparation of claims in Federal Government Contractor / Foreign Contractor Claims & Disputes (Contract Disputes Act of 1978 (41 USC 601 et seq) requiring TS Clearance Appraisers,

Commercial Property Tax Assessment Appeals / Disputes,

Appraisal / Valuation Alternative Dispute Resolution (ADR) Mediation / Arbitration / Umpire / Referee Services,

U.S. National Security and Federally-Related Transaction Matters Requiring TS Clearance Appraisers,

Rebuttal, Retrospective, and Forensic Appraisals and Valuations,

Appraisal Rights Shareholder Valuation Disputes,

FDIC Professional Liability Lawsuits: FDIC v. Bank Directors and Officers (Appraisal Gross Negligence / Business Judgment Rule),

Mortgage-Backed Securities Lawsuits,

Appraisal / Appraiser Regulatory Compliance with U.S. Interagency Appraisal and Evaluation Guidelines (75 FR 77450), Treasury/IRS Circular 230 Guidelines, Pension Protection Act and, International Basel Accord Compliance,

Appraisal / Appraiser Professional Standards & Guidelines Compliance with the Uniform Standards of Professional Appraisal Practice (USPAP), International Valuation Standards (IVS), and RICS 'Red Book',

Appraisal / Appraiser Standard-of-Care Compliance / Misconduct / Malpractice and Fraud Investigations,

Eminent Domain, Takings, Right-of-Way, Zoning and Condemnation Challenges,

Complex and Multidisciplinary Appraisals / Valuations Involving Multiple Components of Business Valuation / Real Property / Machinery and Technical Services / Personal Property,

Appraiser Expert Witness Daubert / Motion in Limine / Rule 702 / USPAP Competency Challenges,

Appraisal and Environmental Expert Reviews and Analyses of Superfund and Brownfields Sites, and Environmentally Sensitive and Impaired Real Property,

Quantification of economic damages in connection with complex construction and design deficiency claims,

Commercial Insurance Policy Interpretation and Coverage Disputes requiring Expert Witnesses with CIC, MLIS, or greater Accreditation,

Quantification of economic damages in connection with Automotive Manufacturing design deficiency claims and recalls (Foreign and Domestic),

Quantification of economic damages in connection with Automotive Manufacturer (Foreign and Domestic) Dealer Disputes,

Hard-to-Value Illiquid Assets, Real and Moveable.

Appraisal Expert Witness