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William Cotsis
William Cotsis

William Cotsis

Director William Cotsis & Associates

location
Sydney, NSW
Click to Reveal Phone Number(02) 926..
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About William

William Cotsis has practised law for over fourteen years, with a strong emphasis on commercial and domestic building disputes. Since 2003, he has developed considerable experience in procedures under the Building and Construction Industry Security of Payment Act, guiding clients through complex legal processes to achieve favourable and cost-effective outcomes. His practice spans a variety of courts and tribunals, including the Federal Court, Supreme Court (with experience in the Court of Appeal), District Court, Local Court, and the NSW Civil and Administrative Tribunal. William’s comprehensive approach ensures that clients receive informed and strategic advice tailored to their specific circumstances.

Practice Areas

Commercial Law
Litigation & Disputes

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Experience

Solicitor
Solicitor
William Cotsis & Associates
Mar 2004 - Present · 22 years
Solicitor
Solicitor
Scara Trimarchi Solicitors
Mar 2001 - Mar 2004 · 3 years
Solicitor
Solicitor
Marsdens Law Group
Jun 1994 - Oct 1997 · 3 years 4 months

Education

B.EcLLB, Economics & Law
B.EcLLB, Economics & Law
University of Sydney
1986 - 1993

Contact Information

Sydney, NSW

LocationSuite 2 Level 5, 154 Elizabeth Street, Sydney, NSW
Click to Reveal Phone Number(02) 926..

Practice Certificate

Name
William Cotsis
Date of Admission
1992
Certification type
Principal of a law practice
Class
Law Practice
Region
CITY OF SYDNEY
CheckLast checked: 10 Dec 2025
Checked with the The Law Society of NSW

Practice Categories

Litigation & Disputes
  • Building and Construction