Leslie Steven Marks

Leslie Steven Marks

Arbitrator, Mediator, Referee, Special Master, Umpire

Mr. Marks is a full time neutral with ARC. He has served as an arbitrator and mediator on additional panels including the Los Angeles Superior Court ADR Program and the Contractors State License Board (CSLB). After 40 years of diverse litigation practice that included managing the litigation department of his former mid-size and full service law firm, Mr. Marks “brings to the table” vast experience, unwavering integrity and a relentless passion for resolving cases. Mr. Marks has served as an arbitrator (including as a panelist or panel chair), mediator, insurance umpire, referee and/or special master in hundreds of cases, and as participating counsel in well over a thousand cases, involving, among other areas, multi-million dollar private and public works construction disputes, real estate and business disputes and homeowner association (condominium) matters. His broad experience and people skills enable him to resolve even the most complex and contentious litigation.


  • AV Rated Preeminent by Martindale- Hubbell since 2000; named as a Superlawyer in Construction from 2012- 2016, 2018-2021
  • Fellow, Construction Lawyers Society of America; Member, Los Angeles County and Santa Monica Bar Associations
  • Published numerous articles on construction and real estate in Los Angeles Lawyer Magazine and Lawyers World
  • Frequently lectures on real estate and construction law to the CSLB and numerous trade and non-profit organizations.


Construction, Real Estate, Homeowners Association, Business, Insurance


Mr. Marks' experience includes litigating (both prosecution and defense), arbitrating and mediating numerous:

  • Construction (Public and Private Works): Multi-million-dollar construction defect matters and insurance bad faith construction claims involving multi-unit condominiums, single-family homes, high-rise buildings, luxury homes, commercial and industrial properties, public schools, government facilities, golf resorts, gas stations and restaurants. Complex, multi-milliondollar public and private works disputes involving construction defects, mechanic’s liens, prompt payment penalties, delay and disruption claims (critical path), performance and payment bond disputes, bidding disputes, change order disputes, extra work claims, design errors and omissions claims, and claims made under the California False Claims Act.
  • Homeowner Association (HOA) Disputes: Homeowner vs. HOA disputes including claims for injunctive relief, mismanagement of association affairs, board negligence/breach of fiduciary duty, board failure to maintain and repair common areas, election disputes, HOA/vendor disputes and construction related disputes.
  • Buyer, Seller, Broker Disputes: Disputes between buyers, sellers and brokers involving residential, commercial and industrial real estate transactions, claims of breach of the California Residential Purchase Agreement, claims of non-disclosure of material facts in the sale of real estate, and broker malpractice.
  • Real Estate: Real estate matters including boundary/neighbor disputes, easements, condemnation, title insurance and surety claims.
  • Business/Contract: Business and contract disputes involving corporations, limited liability companies, partnerships and sole proprietorships.
  • Insurance Coverage: Insurance coverage disputes involving construction, homeowner, errors and omissions, title, surety, and liability insurance.


   J.D. (1980), Loyola Law School, Los Angeles, CA; Dean's Honor List
   B.A. in Political Science (1977), University of California, Los Angeles, CA; Summa Cum Laude; Phi Beta Kappa

Mr. Marks is available nationwide.

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