What a sloped backyard and gas line distance mean for boiler choice in a Port Moody laneway house.
Tell us what you need—we’ll call you back fast.
Quick answer
A laneway house in Port Moody needs its own boiler fed by a gas line extended from the main house's meter, and because many of the city's backyards sit on a real slope, that run often has to work around grade change rather than a flat, direct path. A compact condensing boiler suited to a small mechanical footprint is the usual fit, with vent placement on the slope being the main planning consideration.
Need a licensed gas fitter for your gas boiler? Call CANRO at (604) 359-1081 — residential natural-gas heating and hot water across Metro Vancouver since 1999.
A laneway house sits at the rear of the property facing the back lane, and on a Port Moody lot with real elevation change, the gas line from the main house's meter often has to navigate a retaining wall, a set of steps, or a landscaped slope rather than a straight run across flat yard. The actual routing gets confirmed on-site rather than assumed from a permit drawing.
A tech also confirms the existing meter has capacity for both the main house's appliances and the laneway house's new boiler combined before extending the line, since a longer uphill run is more expensive to modify later if capacity turns out to be short.
Laneway houses in Port Moody are built small, often under the city's secondary dwelling provisions, and a compact wall-mounted condensing boiler suits that limited mechanical space better than bulkier older-style equipment, particularly if the laneway house has radiant floor heating, which is common in newer secondary structures.
A laneway house typically houses one household, so sizing only needs to cover that structure's own heat loss and hot-water needs rather than a shared system's combined demand.
Vent termination for a laneway house needs clearance from the lane, from the main house if it's close by, and from the slope of the property itself, since exhaust and condensate drainage on an angled grade need more careful planning than on flat ground. Port Moody's damp climate at the head of Burrard Inlet makes a clear condensate path away from the laneway house's foundation particularly important.
Port Moody's municipal water, drawn from the same Metro Vancouver regional reservoir system serving most of the region, is soft, which is a modest long-term benefit for a boiler's heat exchanger in a laneway house just as much as in the main home.
Laneway house construction and any related gas line extension go through the City of Port Moody's secondary dwelling and building permit process, with the boiler's gas and vent work reviewed as part of that broader permit. As a ballpark, not a quote, a new boiler installation runs roughly $6,500–$14,000+, with the gas line's length and elevation change being a significant cost variable on a sloped lot.
On a lot with meaningful grade change, site drainage and grading plans typically factor into the broader permit review alongside the mechanical work itself.
Safety note
If you ever smell gas, hear hissing near a gas line, or suspect carbon monoxide (headache, dizziness, or a sounding CO alarm), leave the home immediately and call FortisBC at 1-800-663-9911 from outside or a neighbour's phone. Do not try to relight a pilot or reset equipment yourself if you smell gas. All gas water heater and boiler work must be done by a Technical Safety BC licensed gas fitter; CANRO holds gas licence LGA0043870 and boiler licence LBP0046450.
Usually not a separate meter, but it needs its own gas line extended from the main house's meter, sized for both structures' combined demand.
Yes, elevation change often means the route follows a retaining wall or landscaped slope rather than a straight path, confirmed on-site.
A compact wall-mounted condensing boiler is a common fit, especially paired with radiant floor heating in newer secondary structures.
Yes, the city's damp climate means condensate drainage away from the foundation needs particular attention on an angled grade.
It's reviewed as part of the City of Port Moody's broader secondary dwelling and building permit process.
The city's soft, reservoir-sourced water is a modest long-term benefit for the boiler's heat exchanger, the same as for the main house.
Family-run, TSBC-licensed (gas LGA0043870 · boiler LBP0046450), serving Metro Vancouver homes since 1999. Residential, natural gas only.
Call (604) 359-1081 Email info@canroheat.ca“Canro does an amazing job! Super professional and skilled with everything—boilers, furnaces, and AC. Always a pleasure working with them!”
“Five stars for Canro. We needed a replacement of a 30-year-old boiler. A new high-efficiency unit was installed—clean, professional work.”
“I can’t speak highly enough about George, who was recommended for a boiler service call for my parents’ home. George is excellent.”
25+ years keeping Metro Vancouver homes comfortable. Honest advice, upfront pricing, work that lasts.