Karsten Wenzlaff, Advisor
August 26th, 2025
Karsten Wenzlaff is a Crowdfunding and Fintech Expert from Germany. He is Secretary-General of Digit[...]
3 Best Criminal Lawyers in Calgary for Impaired Driving Charges
September 23, 2026
An impaired driving charge in Calgary can cost you your licence, your job, and your insurance rate within days of the traffic stop. The three best criminal lawyers in Calgary for impaired driving charges listed below all defend DUI, over 80, and refusal cases in Alberta courts. Each one is picked for courtroom experience, clear pricing, and a track record with driving-related charges.
Before the list, it helps to know what you are actually facing.
What Happens After an Impaired Driving Charge in Alberta?
Most drivers in Alberta face two separate processes after an impaired driving stop: a roadside sanction from the province and a possible criminal charge under the Criminal Code of Canada.
Immediate Roadside Sanctions (IRS). Alberta police can issue an administrative penalty on the spot. An IRS FAIL penalty usually brings a $1,000 fine, a 90-day licence suspension, and a 30-day vehicle seizure. You dispute it through SafeRoads Alberta, and the window to do that is short. [CONFIRM: current SafeRoads review deadline before publishing]
Criminal charges. Police can also lay a charge under section 320.14 of the Criminal Code. Common charges include:
- Impaired operation: driving while your ability is impaired by alcohol, drugs, or both.
- Over 80: a blood alcohol concentration of 80 mg or more per 100 mL of blood within two hours of driving.
- Refusal: failing or refusing to give a breath or blood sample when lawfully demanded.
A first conviction carries a mandatory minimum fine of $1,000, rising to $2,000 for a refusal, plus a driving prohibition and a criminal record. A lawyer can look at whether the stop was lawful, whether the breath demand was valid, and whether the testing followed the rules.
1. Wyman & Williamson
Wyman & Williamson is a Calgary criminal defence firm led by two senior lawyers, James Wyman and Jillian Williamson, who defend impaired driving, over 80, and refusal charges alongside a full criminal practice. James was called to the Alberta bar in 2010 and has argued before the Supreme Court of Canada. Jillian graduated from the University of Calgary Faculty of Law and was called in 2013.
The firm appears almost daily in the Alberta Court of Justice and the Court of King's Bench. That matters for impaired driving files, because most of these cases are decided by how well a lawyer knows local Crown prosecutors and the Charter arguments that apply to roadside stops and breath demands.
Why it stands out for impaired driving charges:
- Speed on roadside sanctions. The firm tells drivers to call the same day they receive a Notice of Administrative Penalty, since the dispute window is so short.
- Resolution first. Their approach is to find weaknesses in the Crown's disclosure, such as an unlawful search or a gap in the evidence, and push for a withdrawal or reduced charge before trial.
- Trial-ready files. When a case has to be fought, they prepare it from day one with Charter applications and cross-examination.
- Clear pricing. One flat fee per matter, no hourly billing, and monthly payment plans. Legal aid certificates are accepted on a limited basis.
- Free first hour. A full one-hour consultation, not a quick screening call.
The firm reports more than 2,000 cases defended and 185+ five-star Google reviews. It also publishes its case results, including the charge, the court, and the outcome, so you can check its work before you call.
Serves: Calgary, Airdrie, Canmore, Drumheller, Red Deer, Lethbridge, Edmonton, plus courts in Saskatchewan and British Columbia.
Best for: Drivers who want senior lawyers, a flat fee, and a firm that handles both the roadside sanction and the criminal charge.
2. Dunn & Associates
Dunn & Associates is a downtown Calgary criminal defence firm whose lawyers regularly handle impaired driving, dangerous driving, and DUI appeals. The firm is led by Greg Dunn, and lawyer Vince Semenuk handles a large share of its driving-related files.
Client feedback for the firm points to results on driving charges specifically. Former clients describe impaired and dangerous driving charges being successfully defended, DUI charges being dropped, and appeals being taken forward when the first result was not the right one.
Why it stands out for impaired driving charges:
- Driving cases at every stage. The firm handles files from the first court appearance through trial and appeal.
- Clear communication. Clients often mention being walked through each step and given realistic expectations.
- Central location. The office sits on 6 Avenue SW, a short distance from the Calgary Courts Centre.
Contact: 801 6 Ave SW, Suite 2610, Calgary, AB T2P 3W2. Phone: 403-233-0443.
Best for: Drivers facing impaired or dangerous driving charges who may need an appeal as well as a trial defence.
3. Wilson Criminal Defence
Wilson Criminal Defence is a Calgary criminal defence practice led by Cory Wilson that handles impaired driving charges and Immediate Roadside Sanctions disputes. The firm works out of Chadwick House on 14 Street SW, just outside the downtown core.
See: Calgary’s Modular Raises Key Insurtech Funding Round
Clients describe Cory Wilson as direct and responsive, with regular email updates throughout a case. Reported results include a successful outcome on an IRS roadside sanction and criminal charges thrown out at trial.
Why it stands out for impaired driving charges:
- Handles the provincial side too. The firm takes on IRS disputes, which run separately from the criminal charge.
- Trial experience. Clients report cases being taken to trial and won, not only resolved by plea.
- Honest assessments. Former clients say they were told plainly what to expect from the start.
Contact: Chadwick House, 1842 14 St SW, Main Floor, Calgary, AB T2T 3S9. Phone: 403-978-6052.
Best for: Drivers who want a lawyer to fight both a roadside sanction and a criminal impaired driving charge.
How to Choose an Impaired Driving Lawyer in Calgary
The right impaired driving lawyer in Calgary is one who does criminal defence full time and has taken driving cases to trial. Ask these questions at your consultation:
- How many impaired driving or over 80 cases have you handled? A general practice lawyer may not know the breath testing rules in detail.
- Will you also handle my SafeRoads dispute? The roadside sanction and the criminal charge run on separate tracks.
- Is your fee flat or hourly? A flat fee lets you know the full cost up front.
- Who will actually appear in court for me? Some firms pass files to junior lawyers.
- What are the realistic outcomes for my case? A good lawyer will give you an honest range, not a promise.
Frequently Asked Questions
Can an impaired driving charge be dropped in Alberta?
An impaired driving charge in Alberta can be withdrawn or stayed when the evidence has problems, such as an unlawful stop, an invalid breath demand, or delays that breach your Charter rights. Whether that applies depends on the facts in the Crown's disclosure, so a lawyer needs to review the file first.
Do I need a lawyer for a first-offence DUI in Calgary?
A lawyer is strongly recommended for a first-offence DUI in Calgary, because a conviction brings a criminal record, a minimum $1,000 fine, and a driving prohibition. Many first-time drivers have defences they do not know about until a lawyer reviews the evidence.
How much does an impaired driving lawyer cost in Calgary?
Impaired driving lawyer fees in Calgary depend on whether the case resolves early or goes to trial. Some firms, including Wyman & Williamson, charge a flat fee with payment plans instead of hourly rates. Ask for the full cost in writing at your first consultation.
Should I talk to police after an impaired driving arrest?
You should speak to a lawyer before giving any statement to police after an impaired driving arrest. You have the right to contact counsel, and anything you say can be used as evidence.
The National Crowdfunding & Fintech Association (NCFA Canada) is a financial innovation ecosystem that provides education, market intelligence, industry stewardship, networking and funding opportunities and services to thousands of community members and works closely with industry, government, partners and affiliates to create a vibrant and innovative fintech and funding industry in Canada. Decentralized and distributed, NCFA is engaged with global stakeholders and helps incubate projects and investment in fintech, alternative finance, crowdfunding, peer-to-peer finance, payments, digital assets and tokens, artificial intelligence, blockchain, cryptocurrency, regtech, and insurtech sectors. Join Canada's Fintech & Funding Community today FREE! Or become a contributing member and get perks. For more information, please visit: www.ncfacanada.org
 |  |  |
|---|---|---|
 |  |  |
Leave a Reply