What does new gas line work for a fireplace cost in Toronto?

Installing a new gas line for a fireplace in Toronto typically runs $400–$1,200+, depending on the complexity of the run and what's already in place. Most straightforward installations — where the gas meter and shutoff are accessible and the fireplace is on the main floor — land in the $500–$800 range.

The biggest cost driver is how far the gas line needs to travel. A short run from an existing nearby gas line (say, from a furnace or water heater in the basement directly below) is far less expensive than running a new line across the house, through finished walls, or up multiple floors. Every additional foot of pipe, every wall penetration, and every fitting adds labour and material cost.

Here's a rough breakdown of what affects your final price:

• Simple run (under 10 ft, unfinished basement, existing shutoff nearby): $400–$600
• Mid-range (10–25 ft, some finished walls, main floor fireplace): $600–$900
• Complex run (long distance, finished walls, upper floor, or new meter connection): $900–$1,500+

In Ontario, all gas line work must be performed by a TSSA-licensed gas technician — this is not a DIY project, full stop. The TSSA (Technical Standards and Safety Authority) regulates gas work in the province, and unlicensed work is both illegal and a serious safety and insurance liability. Your homeowner's insurance can be voided if unpermitted gas work is ever discovered.

A permit is required for new gas line installations in Toronto, and the contractor you hire should be pulling that permit as part of the job. Don't hire anyone who suggests skipping it. The City of Toronto Building Division (416-397-5330) or toronto.ca/building can confirm permit requirements for your specific project.

If you're in an older home — common in neighbourhoods like The Annex, Leslieville, or Roncesvalles — the existing gas piping may be older black iron pipe, which can add complexity if connections need to be made or updated. Newer homes typically have flexible corrugated stainless steel tubing (CSST), which is faster to run and often reduces labour costs.

What's Usually Included vs. Extra

Most quotes will include the gas line run, fittings, shutoff valve at the fireplace, pressure testing, and the permit fee. What's often not included: patching drywall after running through finished walls, the fireplace insert itself, or any electrical work needed for an ignition system (which would require a separate ESA-permitted electrician).

Next Steps

Get at least two or three quotes from TSSA-licensed gas contractors — prices can vary meaningfully between companies. Ask each contractor specifically whether the permit is included in their quote and whether they'll be doing a pressure test on completion (they should be). You can browse licensed gas and HVAC professionals in the Toronto Construction Network directory to find vetted local contractors serving your area.