Ontario directory

Business & Corporate Law Firms in Durham Region, Ontario

52 law firms.

What does a business lawyer in Durham Region do?

A business lawyer in Durham Region helps companies get set up, grow, and change hands. The everyday work is incorporating a company, drafting shareholder and partnership agreements, negotiating commercial contracts, arranging financing, and handling the purchase or sale of a business. A new corporation is created through one of two registries: federally through Corporations Canada or provincially through the Ontario Business Registry.

Most of this work stays out of court. When a commercial dispute does turn into a lawsuit, larger claims are heard at the Superior Court of Justice, which for Durham sits at the Durham Region Courthouse at 150 Bond Street East in Oshawa. Ask how a firm bills before you engage, since ongoing advice and one-off deals are often priced differently.

Should you incorporate federally or in Ontario?

You can do either, and both give your business a separate legal identity with limited liability. The practical difference is reach and name protection.

Federal incorporation runs through Corporations Canada under the Canada Business Corporations Act, and it gives you the right to use your corporate name across Canada. Ontario incorporation goes through the Ontario Business Registry under the province's Business Corporations Act, where you can incorporate a business corporation online. A federal corporation still has to register in each province where it operates, so a Pickering company that incorporates federally also registers in Ontario. Businesses staying local often pick Ontario for simplicity, while those trading nationally lean federal for the name protection.

What agreements and deals does a Durham business need papered?

Beyond the first filing, business law is mostly the documents that set out who owns what and who owes what. A shareholder or partnership agreement records how the owners split profits, make decisions, and exit, heading off disputes that are expensive to untangle later. Commercial contracts cover suppliers, customers, and leases for the office, retail, and industrial space across Whitby, Ajax, and the rest of Durham.

Financing brings its own paperwork: loan or investment agreements and, often, security registered against the company's assets. Buying or selling a business is usually built as either an asset purchase or a share purchase, and that choice affects tax, liability, and which existing contracts carry over. It's worth getting advice before you sign a letter of intent.

How do you choose a business law firm in Durham Region?

Match the firm to your stage and your sector. A first-time founder, an established manufacturer, and a family business selling to a buyer each need different depth. Ask who will handle your file, how the firm prices ongoing advice against one-off deals, and whether it's done work like yours before. Durham Region takes in Oshawa, Whitby, Pickering, Ajax, Clarington, and three more municipalities, so firms are spread across the area and there's usually one near you.

You can confirm any lawyer's standing on the Law Society of Ontario directory. Browse the business & corporate law firms in Durham Region below.

Aitchison Law Office

2 lawyers · Est. 1976

Aitchison Law Office is a family-run general law firm in Oshawa, Ontario, founded in 1976. It's operated by James Aitchison and his two daughters, Kelly and Laurie, who handle real estate, family law, wills and estate…

Real Estate LawReal Estate LawFamily LawFamily LawWills, Estates & TrustsWills, Estates & TrustsBusiness & Corporate LawBusiness & Corporate Law

Aleksandr Bolotenko Professional Corporation is a full-service law firm in Oshawa, Ontario, where Aleksandr Bolotenko has practiced for more than 45 years. The firm handles estate litigation, estate planning, civil li…

Wills, Estates & TrustsWills, Estates & TrustsCivil Litigation & Dispute ResolutionCivil Litigation & Dispute ResolutionBusiness & Corporate LawBusiness & Corporate LawReal Estate LawReal Estate Law

Anna Krajewska Legal Practice is an Ontario firm with offices in Whitby and Mississauga, practising real estate, family law, wills and estates, immigration, business law, and personal injury. The firm is led by Anna K…

Family LawFamily LawBusiness & Corporate LawBusiness & Corporate Law

Bharath Law Professional Corporation

1 lawyer · Est. 2021

Bharath Law Professional Corporation is a Whitby-based firm serving all of Ontario in real estate, corporate, and estate matters, with services also offered in criminal defence, litigation, immigration, and employment…

Real Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute ResolutionWills, Estates & TrustsWills, Estates & Trusts

Brunt Law

2 lawyers

Brunt Law is a small firm in downtown Whitby, Ontario, practicing real estate, wills and powers of attorney, estate law, and corporate law. Gerald Brunt has served Durham Region clients for over 30 years, and Jara Bru…

Real Estate LawReal Estate LawWills, Estates & TrustsWills, Estates & TrustsBusiness & Corporate LawBusiness & Corporate Law

Byron Street Legal

3 lawyers · Est. 2014

Byron Street Legal is a law firm in Whitby, Ontario, founded by Denise Branton in 2014 as Branton Law and rebranded in 2025. It practices business and corporate/commercial law, commercial real estate, and wills and es…

Business & Corporate LawBusiness & Corporate LawReal Estate LawReal Estate LawWills, Estates & TrustsWills, Estates & Trusts

Carnevale Business Law

8 lawyers · Est. 2002

Carnevale Business Law is a business law firm formed in September 2002 that represents clients across the GTA, from large entities to small businesses. It practices corporate and commercial law, litigation and constru…

Business & Corporate LawBusiness & Corporate LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute ResolutionConstruction LawConstruction Law

Cubias Law

1 lawyer · Est. 2013

Cubias Law is a sole-practitioner firm founded by Graciela Cubias in 2013, with offices in Apsley and Ajax, Ontario (and a Bancroft mailing address). It handles real estate closings, wills and estates, corporate and c…

Real Estate LawReal Estate LawWills, Estates & TrustsWills, Estates & TrustsBusiness & Corporate LawBusiness & Corporate LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute Resolution

Devry Smith Frank LLP

51 lawyers · Est. 1964

Devry Smith Frank LLP (DSF) is a full-service law firm established in Toronto in 1964, with over 155 lawyers and support staff. It has offices in Toronto, Barrie, Whitby, Midland, Collingwood, and Haliburton, and prac…

Personal InjuryPersonal InjuryFamily LawFamily LawCriminal DefenceCriminal DefenceWills, Estates & TrustsWills, Estates & Trusts

Diamond Fischman & Pushman

3 lawyers · Est. 1969

Diamond Fischman & Pushman is a real estate law firm in downtown Oshawa that has served Durham Region since 1969. The firm focuses mainly on residential real estate but also handles commercial transactions, wills and …

Real Estate LawReal Estate LawWills, Estates & TrustsWills, Estates & TrustsFamily LawFamily LawBusiness & Corporate LawBusiness & Corporate Law

Ecclestone, Hamer, Poisson, Neuwald & Freeman (EHPNF) is a boutique law firm based in downtown Toronto with a second office in Whitby, serving the Greater Toronto Area. It practices family law, wills and estates, real…

Family LawFamily LawWills, Estates & TrustsWills, Estates & TrustsReal Estate LawReal Estate LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute Resolution

Epstein & Associates

31 lawyers · Est. 2005

Epstein & Associates is a full-service law firm founded in 2005, with offices in Newmarket, Barrie, Mississauga, Richmond Hill, Oshawa, and Aurora. Its lawyers handle family law, real estate, wills and estates, corpor…

Family LawFamily LawReal Estate LawReal Estate LawWills, Estates & TrustsWills, Estates & TrustsBusiness & Corporate LawBusiness & Corporate Law

Expat Attorneys LLP

2 lawyers · Est. 2023

Expat Attorneys LLP is a real estate, wills and estates, and immigration law firm serving Durham Region and the Greater Toronto Area from offices in Bowmanville and Oshawa. Established in 2023, it's a partnership of t…

Real Estate LawReal Estate LawWills, Estates & TrustsWills, Estates & TrustsBusiness & Corporate LawBusiness & Corporate LawImmigration LawImmigration Law

Foden & Doucette

1 lawyer

Foden & Doucette (FDPC Law Firm) is located in Pickering Village, Ajax, and has served Durham Region and the Greater Toronto Area for decades. The firm handles residential real estate transactions, the purchase and sa…

Real Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate LawWills, Estates & TrustsWills, Estates & Trusts

ForteLex Legal

1 lawyer

ForteLex Legal is a law firm in Pickering, Ontario, founded by Fortune Ijeomah. It handles immigration, real estate, business law, and wills and estate planning, and it offers both a free 15-minute phone consultation …

Immigration LawImmigration LawReal Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate LawWills, Estates & TrustsWills, Estates & Trusts

Friend & Dobson Professional Corporation is a general practice law firm with offices in Port Perry, Bobcaygeon and Lindsay, now practicing in association with Warner & Cork. The firm handles family law, civil litigati…

Family LawFamily LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute ResolutionBusiness & Corporate LawBusiness & Corporate LawReal Estate LawReal Estate Law

Furlong Ford Barristers & Solicitors is a full-service law firm in Oshawa, Ontario that has served the Durham Region and GTA for over 40 years. The firm practices business law, family law, employment law, real estate …

Business & Corporate LawBusiness & Corporate LawFamily LawFamily LawEmployment & Labour LawEmployment & Labour LawReal Estate LawReal Estate Law

Goldwyn Law

2 lawyers

Goldwyn Law is an Ontario law firm with offices in Markham and Pickering, focused on real estate, corporate and commercial matters, secured lending, wills and estates, mortgage enforcement and notarial services. The f…

Real Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate LawWills, Estates & TrustsWills, Estates & TrustsNotary & Commissioner ServicesNotary & Commissioner Services

Himelfarb Proszanski is a Toronto law firm whose HIMPRO division focuses on personal injury, long-term disability, and insurance law. It represents injured clients and denied disability claimants across Toronto, Bramp…

Personal InjuryPersonal InjuryInsurance LawInsurance LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute ResolutionClass ActionsClass Actions

ILM Law Office

1 lawyer

ILM Law Office is a law firm in Ajax, Ontario that serves clients across Durham Region and the greater Toronto area. It practices immigration, business, real estate, family, and wills and estates law, and it's led by …

Immigration LawImmigration LawBusiness & Corporate LawBusiness & Corporate LawReal Estate LawReal Estate LawFamily LawFamily Law

Inclusive Law

2 lawyers

Inclusive Law is a law firm serving Peterborough, Port Perry, Omemee and the surrounding areas, with offices in all three communities. It's part of a multidisciplinary practice that also offers accounting and wealth m…

Real Estate LawReal Estate LawWills, Estates & TrustsWills, Estates & TrustsBusiness & Corporate LawBusiness & Corporate Law

Johnston Montgomery Watson is a law firm in Whitby that has served Durham Region and the GTA for over 40 years. It handles wills and estates, litigation, corporate and commercial law, and real estate law. Founder Patr…

Wills, Estates & TrustsWills, Estates & TrustsCivil Litigation & Dispute ResolutionCivil Litigation & Dispute ResolutionBusiness & Corporate LawBusiness & Corporate Law

Kelly Greenway Bruce LLP

10 lawyers · Est. 1956

Kelly Greenway Bruce LLP is a full-service law firm that has served the Region of Durham, the City of Kawartha Lakes and the wider Province of Ontario since 1956, with offices in Oshawa and Lindsay. It practises perso…

Personal InjuryPersonal InjuryFamily LawFamily LawCriminal DefenceCriminal DefenceWills, Estates & TrustsWills, Estates & Trusts

Kevin P. Mara Law Office

1 lawyer · Est. 2006

Kevin P. Mara Law Office is an Oshawa based firm that has served the Durham Region for more than 25 years. Kevin Mara handles residential and commercial real estate, corporate and commercial matters, and estate planni…

Real Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate LawWills, Estates & TrustsWills, Estates & Trusts