Ottawa's underground, known block by block — since 1994.
Underground Services Locators has spent more than 32 years helping contractors, utilities, engineers, and homeowners avoid costly underground surprises.
Three generations of locate experience, one crew you'll recognize.
USL-1 is a leading provider of underground utility locating and concrete scanning services since 1994. Safety is our top priority and we take measures to ensure the health and well-being of our employees, clients, and the communities around our operations.
Our projects are executed with excellence through comprehensive training, thorough planning, and effective management. Whether we're clearing a single core hole in a condo tower or coordinating a highway-corridor SUE investigation, the standard doesn't change.
We operate out of Ottawa, serving Eastern Ontario, and are fully insured for public liability worldwide.
The values that keep shovels off our lines.
Safety first, always
Crew, client, public. Training and planning are non-negotiable — that's how we've stayed claim-light for decades.
One point of contact
No handoff between sales and delivery. The person you called is on site or coordinating your job personally.
Credentialed + cleared
Latest industry training, multiple government security clearances, and full worldwide public-liability insurance.
Head Office
100-1704 Carling Ave
Ottawa, ON K2A 1C7
Ready when you are
Have a dig, cut, or core coming up?
Get the complete picture of what's below — public and private locates, GPR scanning, or a full ASCE 38-aligned SUE investigation. Tell us the scope and we'll come back with timing and a quote.