Can I add a peninsula or three-sided gas fireplace during an Ottawa basement renovation and what does it cost?

Yes, you can absolutely add a peninsula or three-sided gas fireplace during a basement renovation in Ottawa, and it's actually an ideal time to do it since you'll already have the space opened up for electrical, plumbing, and HVAC work. A peninsula fireplace creates a stunning room divider between areas like a family room and home office, while a three-sided unit becomes a dramatic focal point visible from multiple angles.

The key consideration for Ottawa basements is proper venting, since you're below grade. Direct-vent gas fireplaces are your best option because they use a sealed combustion system that draws air from outside and exhausts through a double-wall vent pipe. The vent can run horizontally through your basement wall (if it's above grade) or vertically up through the house and out the roof. Many Ottawa homes have walkout basements or above-grade basement walls that make horizontal venting straightforward, but even fully below-grade installations work well with vertical venting through a chase or existing chimney.

Peninsula and three-sided gas fireplaces require more careful planning than standard single-sided units because they need proper clearances on multiple sides and often require custom framing or built-in cabinetry to create the peninsula effect. The fireplace itself sits in a specially framed opening, with non-combustible materials like tile, stone, or metal surrounding the visible sides. You'll need to coordinate with your renovation contractor to ensure the framing, gas line rough-in, electrical for ignition and blower fans, and venting are all properly planned before drywall goes up.

Costs for peninsula or three-sided gas fireplaces in Ottawa run $4,500 to $9,000 for the fireplace unit itself, plus $2,000 to $4,000 for installation including gas line, venting, and basic framing. Custom millwork, stone or tile work, and electrical upgrades add $2,000 to $8,000 or more depending on the finish level you want. Total project costs typically range $8,500 to $21,000 including the fireplace, installation, and finishing work. The investment makes sense in Ottawa's climate because a basement gas fireplace can significantly reduce your heating bills during the long winter months while creating a warm, inviting space your family will actually use.

All gas work must be performed by a TSSA-licensed gas fitter — this is Ontario law, and unlicensed gas work voids your insurance and creates serious carbon monoxide risks. Make sure your renovation contractor coordinates with a licensed gas fitter for the rough-in and final connection. When you're ready to explore options, you can browse experienced fireplace installers through the Ottawa Construction Network directory to find professionals who specialize in basement installations and work well with renovation contractors.