Business Details
48 Years
experience
Your Trusted Legal Partner in Mississauga and Brampton
Established in 1978, our law firm has served the Peel Region and Greater Toronto Area for over four decades. Our team brings combined legal expertise spanning nearly 150 years, specializing in Wills and Estates, Civil Litigation, Estate Litigation, Real Estate Law, and Business Law. We prioritize personalized legal representation, ensuring clients receive tailored solutions that address their unique personal and business needs. Our practice emphasizes practical, cost-effective strategies while maintaining a strong commitment to community service.With multiple senior partners and experienced associates, we provide comprehensive legal guidance across complex matters. Our reputation for responsiveness and client-focused service is reflected in numerous testimonials highlighting successful outcomes. We approach every case with integrity, ensuring clients receive transparent communication and dedicated advocacy throughout their legal journey.
Services
Wills and Estates
Civil Litigation
Estate Litigation
Real Estate Law
Business Law
Details
- Year established: 1978
Highlights and features
- We offer decades of combined legal experience in multiple practice areas.
- Our team provides personalized attention to every client's unique needs.
- We deliver practical, cost-effective solutions for complex legal matters.
- Our lawyers maintain strong community ties and local market knowledge.
- We combine expertise with a commitment to transparent communication.
What people say
Personalized legal representation
Positive outcomes
Knowledgeable team
Responsive communication
Compassionate approach
Services
Wills and Estates
Our legal team specializes in comprehensive estate planning, including Wills, Power of Attorney, and trust agreements. We work closely with clients to create tailored estate plans that ensure their wishes are honored. With decades of experience, we provide expert guidance on estate administration and dispute resolution.
Civil Litigation
We represent clients in diverse civil litigation matters, including personal injury, wrongful dismissal, and commercial disputes. Our approach focuses on achieving practical solutions through negotiation or litigation when necessary. With over 40 years of experience, we protect clients' interests in courtrooms across the region.
Estate Litigation
Our specialists handle contested Wills, guardianship applications, and estate disputes with sensitivity and legal precision. We help families resolve conflicts through mediation or court proceedings when required. Our team's deep understanding of Ontario's estate laws ensures effective representation for executors and beneficiaries.
Real Estate Law
We assist with residential and commercial real estate transactions, including purchases, sales, and development projects. Our services cover title disputes, mortgage financing, and land development planning. With extensive local knowledge, we ensure smooth property transactions for buyers and sellers in Peel Region.
Business Law
Our business law practice covers commercial contracts, shareholder agreements, and corporate restructuring. We advise businesses on legal compliance, commercial leasing, and charitable status registrations. With experienced corporate law practitioners, we provide strategic legal support for companies throughout their business lifecycle.
People
Douglas D. Tannahill
Senior Partner
Practicing law since 1975, Doug specializes in Corporate and Commercial Law with emphasis on real estate and leasing. He graduated from Osgoode Hall Law School after completing undergraduate studies at Ashland University.
John S. Lockhart
Senior Partner
Called to the bar in 1977, John focuses on civil litigation and estate matters. He earned his law degree at the University of Toronto after undergraduate studies at the University of Guelph.
Tyrrell (Terry) Clark
Senior Partner
With legal experience since 1977, Terry specializes in municipal law and land development. He practiced at Mississauga's City Solicitor's Office before joining the firm in 1981.
Timothy S. Lockhart
Associate
Admitted in 2013, Tim practices civil litigation including estate and real estate disputes. He also handles commercial real estate transactions and charity law matters with a client-focused approach.
Leilani Hawkins
Senior Law Clerk
With over 30 years of experience, Leilani specializes in litigation and estate matters. She has supported clients through complex legal processes since joining the firm in 1991.
Questions
What areas of law does Tannahill Lockhart & Clark Law specialize in?
We specialize in Wills and Estates, Civil Litigation, Estate Litigation, Real Estate Law, and Business Law, serving individuals and businesses in the Peel Region and Greater Toronto Area.
How long has the firm been in operation?
Our firm has been serving clients since 1978, providing legal expertise across multiple generations of lawyers and clients in Mississauga and Brampton.
Can I receive a free consultation for my legal matter?
We offer free initial consultations for personal injury cases and provide case evaluations to help clients understand their legal options and potential next steps.
How does the firm handle estate disputes?
Our experienced estate litigation team works to resolve family conflicts and beneficiary disputes through mediation or court proceedings, prioritizing fair and cost-effective solutions.
What makes this law firm different from others in the area?
We combine decades of legal experience with personalized service, maintaining a strong commitment to community values while delivering practical, results-oriented legal solutions.
Do the lawyers provide real estate transaction services?
Yes, we handle residential and commercial real estate transactions including purchases, sales, mortgages, and land development projects throughout the Peel Region.
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