Ontario directory

Business & Corporate Law Firms in Durham Region, Ontario

81 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.

Adetuberu Law

1 lawyer

Adetuberu Law is a boutique law firm based in Whitby that serves Durham Region and the Greater Toronto Area. The firm handles real estate, business, immigration, family law, and notary matters, and it accepts Legal Ai…

Real Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate LawImmigration LawImmigration LawFamily LawFamily LawLegal aidLegal Aid

Aitchison Law Office

3 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

Ajax Law Chambers

2 lawyers

Ajax Law Chambers is a general practice law firm in Ajax, Ontario with two lawyers, Robert DellaLibera and John Tucciarone. The firm handles wills and estates, family law, health law and notarizations, along with real…

Wills, Estates & TrustsWills, Estates & TrustsFamily LawFamily LawHealth LawHealth LawNotary & Commissioner ServicesNotary & Commissioner Services

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…

Real Estate LawReal Estate LawFamily LawFamily LawWills, Estates & TrustsWills, Estates & TrustsImmigration LawImmigration Law

Aya Law Professional Corporation is a real estate and corporate law firm with offices in Oshawa and Toronto, Ontario. It handles commercial and residential real estate transactions, mortgages and refinancing, and corp…

Real Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate Law

Bailey & Sedore

1 lawyer · Est. 1895

Bailey & Sedore is a small general-practice law firm in Uxbridge, Ontario, that traces its practice back to 1895 as the successor to the practices of Col. Samuel S. Sharpe and Willard F. Greig. The firm focuses on rea…

Real Estate LawReal Estate LawWills, Estates & TrustsWills, Estates & TrustsBusiness & 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…

Criminal DefenceCriminal DefenceReal Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute Resolution

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 LawWills, Estates & TrustsWills, Estates & Trusts

Cohen LLP

4 lawyers

Cohen LLP is a boutique law firm with offices in Toronto and Pickering, Ontario. It focuses on residential real estate and estate planning, including wills, powers of attorney, and estate and probate matters, and it a…

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

Corbin's Law

1 lawyer

Corbin's Law is a Toronto-area firm offering real estate, business and corporate, and wills and estates services, with offices in Toronto and Pickering (Durham). It was founded by lawyer Kyle Corbin to represent every…

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

Creighton Law LLP

5 lawyers · Est. 1885

Creighton Law LLP is a full-service law firm in Oshawa and one of the oldest firms in Canada, founded in 1885. It serves Durham Region, the Greater Toronto Area and the Tri-County area in family law, wills and estates…

Family LawFamily LawWills, Estates & TrustsWills, Estates & TrustsReal Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate 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

55 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 DefenceReal Estate LawReal Estate Law

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

Doss Law Professional Corporation

2 lawyers · Est. 2008

Doss Law Professional Corporation is a Canadian firm founded by Marlenne Doss in 2008, serving clients across the Greater Toronto Area from offices in Toronto and Durham. It offers wills and estates, estate administra…

Wills, Estates & TrustsWills, Estates & TrustsReal Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate LawTax LawTax 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

Elm Law

18 lawyers

Elm Law is a Whitby-based firm that practices exclusively family law and estate litigation, with additional offices in Barrie and Oshawa. It handles matters such as custody and access, support claims, property divisio…

Family LawFamily LawWills, Estates & TrustsWills, Estates & TrustsCivil Litigation & Dispute ResolutionCivil Litigation & Dispute ResolutionEmployment & Labour LawEmployment & Labour Law

Epstein & Associates

32 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

Flancman Frisch & Mann

3 lawyers · Est. 1973

Flancman Frisch & Mann Professional Corporation is a Toronto-area law firm that has practised since 1973, with offices in Scarborough and Oshawa. The firm focuses on family law, real estate, wills and estates, and est…

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