Atty. William D. Dallas

Atty. William D. Dallas

William D. Dallas is an experienced litigator with over 30 years of experience in civil litigation and arbitration.

Chicago Chicago 42 yrs experience 42 year
Call (872) 270-8429 Book Appointment

Profile Summary

About William D. Dallas at a glance

William D. Dallas is a Partner based in Chicago, Illinois, practicing at Regas & Dallas P.C.. They have 42+ years of legal experience, licensed to practice since 1984. Their practice focuses on business, real estate, commercial re, and litigation. Admitted to practice in Illinois (1984), U.S. District Court, Northern District of Illinois including Trial Bar (1984), and U.S. Court of Appeals, Seventh Circuit (1985). Educated at DePaul University College of Law (J.D., 1984) and University of Minnesota (B.A., 1981). Recognitions include AV Preeminent. Active member of Chicago, Illinois State and American Bar Associations Association of Trial Lawyers of America. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William D. Dallas is an experienced litigator with over 30 years of experience in civil litigation and arbitration
  • Mr. Dallas has been given the highest rating as an AV Preeminent Attorney by Martindale-Hubbell, one of the most respected national rating services for attorneys
  • Mr. Dallas has tried over 50 cases, including several jury trials, in both state and federal courts, and in arbitration
  • He has experience in complex litigation involving commercial business and real estate transactions, breach of contract, fraud, declaratory judgment and specific performance
  • Mr. Dallas has won numerous cases, both jury and non jury, in a wide array of litigation matters, and has obtained one of the largest dollar settlements in a civil rights case for a public employee against Cook County
  • He has been a faculty member with the Illinois Institute for Continuing Legal Education on issues of practice before federal courts
  • Mr. Dallas has been active with legal aid organizations, having handled numerous matters for Chicago Volunteer Legal Services (CVLS) and Lawyers for the Creative Arts, and has earned a 15 year award from CVLS
  • During law school, Mr. Dallas was an intern with the Illinois Attorney General's Office Environmental Control Division
  • Lectures • Faculty member with the Illinois Institute for continuing Legal Education, Ethics for Federal Practice, June 2013 Representative Matters • Here is a description of just some of the matters Mr. Dallas has handled: Commercial Litigation • Represented business licensee in village revocation hearing based on 2 instances of violating the village ordinance
  • The village revoked the business license at the administrative hearing
  • Regas & Dallas P.C. filed a complaint for administrative review in the Circuit Court of DuPage County and was successful in having the revocation vacated. • Defeated claims by director and others of closely held corporation to breach by Co-Director and Shareholder. • Successfully defended national hinge manufacturer at arbitration of breach of contract claims by Missouri national manufacturer of hinge products in which the claimant was denied all recovery. • Successfully represented Hedge Fund against public company which improperly withheld turnover of over a million shares in publicly traded stock. • Represented International not-for-profit in Board of Director disputes and election issues • Representing landowner in dispute with real estate developer over $33 million Chicago West Loop property. • Representing former director of failed Chicago financial institution in case brought by shareholders and FDIC in Federal District Court. • Obtained verdict piercing corporate veil at trial against shareholder of corporation and successfully collected judgment previously entered against the corporation. • Defeated in whole a $350,000 fee petition by a large Chicago law firm against his client. • Successfully represented Chicago wine distributor in claims against international wine maker for breach of exclusive distribution agreement. • Successfully prosecuted large mechanic's lien claim against national leasing company for work done on Chicagoland office building. • Successfully represented periodontist in shareholder dispute with large Chicagoland dental group to obtain buyout of client's interest against false claims by dental group of improprieties and lack of care by periodontist. • Successfully defended Bank against Borrower claims of fraud, violation of lending laws and breach of contract. • Successfully represented Tenant North American Manufacturing and Marketing Arm of Multi National Company in Lease Breaking Dispute • Obtained an Arbitration Award of $575,000 in favor of Estate of a deceased partner in a real estate venture based on claims of fraud and breach of fiduciary duty that had occurred over 15 years prior to the arbitration that two other law firms, one a large Chicago firm, had declined to accept due to the difficulties with the case Commercial Transactions • Represented landowner in lease transaction with Bank of America for a new bank branch in Naperville, IL. • Represented landowner in lease transaction with Amcore Bank for a new bank branch in Mt
  • Prospect, IL. • Represented landowner in $25 million complex sale and deed back of completed parking garage in downtown Chicago. • Represented landowner in exchange transaction of downtown Chicago commercial real estate with DePaul University. • Represented landowner in sale of $10 million Gold Coast property. • Represented condominium developer owner in sale of $11 million Gold Coast property to condominium developer. • Represented landowner in lease of industrial space in southwest Chicago to truck storage and repair facility. • Represented owner in lease of Gold Coast property to expanding coffee and tea retailer. • Represented tenant in lease of property in Chicago loop from DePaul University. • Represented National Manufacturer of hinge products in purchase of the manufacturing division of a competing national manufacturer. • Represented Owner in lease of suburban facility to YMCA. • Retained as expert witness for tenant in lease dispute between property owner and national restaurant chain tenant. • Represented bank in $13 million hotel loan in foreclosure and workout, and through combination of litigation and transaction structure was able to save client in excess of $500,000 in delinquent taxes owed by borrower. • Represented residential real estate developer in purchase of $48 million parcel of vacant land in suburban Chicagoland. • Represented National Drug Store chain in zoning request before Cook County Zoning Board. • Represented national transport company in acquisition of new truck terminal near O'Hare Airport and obtained zoning for use before the Cook County Zoning Board. • Represented bank in purchase of bank branch facility in suburban Chicagoland. • Represented bank as tenant in lease of bank branch facility in Naperville, IL. • Represented Owner in lease transaction with Bank for suburban Chicago location. • Represented Chicago based Marketing Company in multi-million dollar merger and acquisition transaction • Represented software technology and ecommerce Company in $20 million + merger and acquisition with venture capital firm Reported Cases • O'Brien v
  • Quad Six, Inc., 219 F.Supp.2d 933 (N.D.Ill., Jul. 22, 2002) (NO. 02 C 657) • Harding v
  • Rosewell, 22 F.Supp.2d 806 (N.D.Ill., Sep. 29, 1998)(NO. 96 C 2615) • Bacon v
  • Art Institute of Chicago, 6 F.Supp.2d 762, 79 Fair Empl.Prac.Cas. (BNA) 971 (N.D.Ill
  • May 01, 1998)(NO. 96 C 3584) • Athens v
  • Harris Trust and Sav
  • Bank, 297 Ill.App.3d 1055, 697 N.E.2d 909, 232 Ill.Dec. 167 (Ill.App. 1 Dist., Jun. 30, 1998)(NO. 1-97-1941) • Joseph Frazier, D.D.S. and George D. Dallas, D.D.S. v
  • Dettman, 212 Ill.App.3d 139, 569 N.E.2d 1382, 155 Ill.Dec. 771, 6 IER Cases 726 (Ill.App. 2 Dist., Apr. 10, 1991)NO. 2-90-1271, 2-90-1272) Professional Associations • Illinois State Bar Association • American Trial Lawyers' Association

Practice Areas Explained

William D. Dallas's Areas of Practice

Each practice area below reflects the types of cases William D. Dallas handles, with a brief overview of what that area of law covers.

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

William D. Dallas is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Illinois →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

William D. Dallas is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Illinois →

Commercial Real Estate

William D. Dallas is one of 16,000 commercial re attorneys indexed nationally. Browse commercial re attorneys in Illinois →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

William D. Dallas is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about William D. Dallas

Where is William D. Dallas's law office located?
William D. Dallas's law practice is located in Chicago, Illinois. The firm is Regas & Dallas P.C.. You can contact the office directly through this profile page.
What practice areas does William D. Dallas handle?
William D. Dallas focuses on business, real estate, commercial re, litigation. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has William D. Dallas practiced law?
William D. Dallas has 42+ years of legal experience and has been licensed since 1984.
Where did William D. Dallas go to law school?
William D. Dallas earned their education at (J.D., 1984); (B.A., 1981).
How can I contact William D. Dallas for a consultation?
You can contact William D. Dallas directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has William D. Dallas received?
William D. Dallas's notable recognition includes: AV Preeminent.

Education

J.D.
DePaul University College of Law
- 1984
B.A.
University of Minnesota
- 1981

Awards

AV Preeminent

Bar Admissions

Illinois
Admitted: 1984
U.S. District Court, Northern District of Illinois including Trial Bar
Admitted: 1984
U.S. Court of Appeals, Seventh Circuit
Admitted: 1985

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