About Us

Hedley, McLachlin & Attema is a law firm located in Dunnville, ON, proudly serving clients located in Dunnville and the surrounding areas since 1976. We provide high quality legal services to clients located in Haldimand, Niagara, Hamilton, and across Ontario.
Our team of three lawyers, with over 75 years of combined legal experience, is dedicated to providing you with top quality legal services in a variety of practice areas including real estate, wills & estates, business & corporate law, and family law.
If you are seeking legal advice or representation we would be happy to assist you.


Gregory B. Hedley, LL.B.


Greg graduated with honours from law school in 1973, and has over 48 years of extensive experience in real estate, wills & estates, and corporate/commercial law.

Michael J. McLachlin, B.A., LL.B.


Mike was called to the bar in 1996 and has a broad range of experience in many areas of law including real estate, wills & estates, corporate, and family law.

Ian A. Attema, B.A., B.C.L., LL.B.


Ian was called to the bar in 2018, and is experienced in real estate, wills & estates, and corporate/commercial law.

Primary Areas of Practice

Real Estate

Our lawyers have extensive experience representing clients in all types of real estate matters, such as purchases, sales, mortgages, and lease agreements.

If you are buying, selling, or mortgaging your home or other property, our law firm would be happy to represent you.

Wills & Estates

Having a properly drafted Will and Powers of Attorney will ensure that your assets will be administered and distributed exactly how you intended, and will avoid the risk of hardship, confusion, and family dispute upon your death or mental incapacity. Our lawyers have the knowledge and experience to assist you in creating an estate plan that reflects your desired outcome in any potential situation. If you would like to create or update your Wills and Powers of Attorney, please contact us to set up an appointment with one of our three lawyers.

If a loved one or relative has recently passed away and you are seeking legal advice or representation regarding the deceased’s property or the administration of their estate, our lawyers have the experience and knowledge to assist you in these matters.

Business & Corporate

Your investment in your business is too important to leave to chance. Our lawyers provide many local businesses with various legal services, such as incorporation, corporate reorganization and restructuring, asset or share purchases and sales, business succession planning, commercial leases, shareholder agreements, and commercial real estate matters.


Marriage and divorce are events that can have a profound effect on your life. We can advise you of your rights and obligations in the event of marriage breakdown and assist you with resolving the issues which arise out of separation, including custody and access of children, support, and division of your matrimonial assets. We can also advise you with respect to pre-marriage planning and the benefits of a negotiating and entering into a domestic contract before you get married.