Full Service Ontario Law Firm for Business, Employment, Property, Estate Law — and More

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Trusted Ontario Lawyers, Serving Businesses and Individuals Across Windsor and Essex County

Pearsall Marshall LLP is a full-service Ontario law firm providing experienced legal advice in business, employment, property, estate law, and more. With offices in Leamington, Tecumseh, Windsor, and Kingsville, our lawyers are deeply connected to the communities we serve. Whether you’re a business owner, an employee, or an individual navigating personal legal matters, we deliver practical solutions backed by decades of combined experience.

Clients choose Pearsall Marshall for our commitment to clarity, responsiveness, and results. We take the time to understand your goals, explain your options, and guide you every step of the way. From resolving workplace disputes to managing complex corporate transactions, we combine legal expertise with a focus on service, so you can move forward with confidence.

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Tell us how we can be of service and a Pearsall Marshall team member will contact you.

Experienced, Local, and Committed to Your Success

For more than half a century, Pearsall Marshall LLP has built a reputation for trusted legal service in Ontario and Essex County. Our team pairs deep local roots with the knowledge and dedication to help you navigate legal challenges with clarity and confidence.

Experienced. Local. Trusted.

For over 60 years, Pearsall Marshall LLP has been part of Ontario and Essex County’s legal landscape, combining tradition with the insight needed to resolve today’s challenges.

Focused Legal Services

We offer practical legal support in corporate and commercial law, real estate, and wills and estates—tailored to the needs of individuals, families, and businesses.

Clear Guidance. Real Results.

Legal action can be overwhelming, but we’re here to help in language you can understand. The first step is working together to create a plan that gets the results you need.

Pearsall Marshall LLP | Tecumseh Office

Tecumseh Office

1222 Lesperance Rd

Leamington Lawyers - Pearsall Marshall LLP Full Service Law Firm

Leamington Office

225 Erie St South

Pearsall Marshall LLP | Windsor Office

Windsor Office

#6 2557 Dougall Ave

Pearsall Marshall LLP | Kingsville Office

Kingsville Office

1788 Division St N

Client Testimonials

David Halliwill and Shawna Martindale were great!
They were fast, professional, and personable. We worked with Dave and Shawna for our home mortgage. Both were always kind and thorough on a tight timeline.
David and Shawna are highly recommended!

– Rob Tranter

Whether a business, personal or family matter, Bart handles everything with such care and professionalism. Extremely grateful to have such a trustworthy lawyer on my side. Highly recommend!

– Brent Bondy (Local Guide)

Michael Wills was my lawyer for closing on my recent home purchase. Mike and his assistant Amy were professional, knowledgeable and efficient. I thought pricing was very reasonable and the entire process was easy. Mike was very personable and I would recommend him and use him again for any real estate needs.

– Liz (Local Guide)

A Legacy of Legal Service, Renewed for Today

More than 60 years ago, in the heart of Leamington, Spencer Lorne Pearsall founded a law practice built on professionalism, integrity, and community. Over the decades, that foundation grew into Pearsall Marshall Halliwill and Seaton LLP, earning the trust of individuals, families, and businesses across Windsor and Essex County. Alongside this history, Halliwill Seguin LLP developed its own reputation for accessibility, clear advice, and exceptional results.

Today, these two respected traditions have come together as Pearsall Marshall LLP — uniting deep local roots with a modern, client-focused approach. With offices in Leamington, Kingsville, Windsor, and Tecumseh, our team of dedicated lawyers and staff continues to deliver the high-quality legal service our community has relied on for generations, now strengthened for the future.

Pearsall Marshall LLP | Trusted Ontario Legal Services