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How Much Does a Generator Gas Line Cost in Toronto in 2026?

Last updated:ByStandby Power Desk

A natural gas run from the meter to the generator, 30 to 50 feet, costs $1,200 to $2,200 in Toronto, per RenoHouse. A complete hookup including the TSSA permit, inspection and pressure test runs $800 to $2,000, per EcoFrost Heating. Runs beyond 60 feet add another $500 to $1,000.

What does a generator gas line cost in Toronto?

This range rests on 5 independent sources, counted from the 16 priced lines below rather than from a list at the bottom of the page. Every figure was re-read in the page it is credited to. Where sources disagree, both numbers are shown and the disagreement is named in the row's condition; we do not average them and we do not widen a range to cover one.

Each bar runs from the low to the high of one published range, on a scale shared by every generator gas line line quoted in the same unit. Bars that do not line up are sources that do not agree. 10 of 16 priced lines are drawn here; the numbers are the same ones in the table below.

per project (CAD)

  • Natural gas line run, meter to generator, typical 30-50 ft

    $1,200–$2,200

  • Gas line connection (KoljiBros installation cost breakdown)

    $500–$1,500

  • Meter or trunk line upsize, if existing line is at capacity

    $300–$800

  • Complete generator gas hookup (permit, TSSA inspection, pressure test), GTA

    $800–$2,000

  • ESA permit and inspection, generator's electrical side

    $150–$350

  • Automatic transfer switch, installed

    $800–$2,000

  • Yard trenching for gas line run

    $300–$800

  • Gas-fired backup generator service line, GTA (materials, labour, pressure test)

    $800–$2,200

per permit (CAD)

  • TSSA gas permit fee

    $75–$150

  • TSSA fuel-gas permit fee, alternate Ontario estimate

    $100–$250

Not drawn: 6 lines, each the only figure on this page quoted in added to base run (CAD), per linear foot (CAD), per penetration (CAD), added cost (CAD), per tank, installed (CAD) and per year (CAD). With nothing else in the same unit there is no shared scale to draw them on. Every one of them is priced in full in the table below.

  • Natural gas line run, meter to generator, typical 30-50 ft

    For a 30-50 ft run, run by a TSSA G2 sub-trade. RenoHouse prices a 60+ ft run separately at $500-$1,000 more.

    Typical range
    $1,200–$2,200
    Unit
    per project (CAD)
    Source
    RenoHouse

  • Additional cost for gas line runs beyond 60 ft

    An addition to the base run, not a standalone price. RenoHouse gives it for a 60+ ft run from the meter to the side yard.

    Typical range
    $500–$1,000
    Unit
    added to base run (CAD)
    Source
    RenoHouse

  • Gas line connection (KoljiBros installation cost breakdown)

    One line in KoljiBros' installation breakdown, which prices the standby install, transfer switch, pad and permits separately. KoljiBros attaches no run length to this figure.

    Typical range
    $500–$1,500
    Unit
    per project (CAD)
    Source
    Kolji Bros. Electrical

  • Each additional 10 ft of pipe run (material plus labour)

    An increment on top of a base run, not a total, and EcoFrost writes it with a tilde as an approximation. Longer runs also need more support brackets and more floor or wall crossings, each priced separately.

    Typical range
    $50–$120
    Unit
    per linear foot (CAD)
    Source
    EcoFrost Heating

  • Meter or trunk line upsize, if existing line is at capacity

    "extra" - only where the existing line cannot absorb the added load. EcoFrost says a line sized for just a furnace usually cannot handle an added gas dryer or generator, and measures the gauge and BTU load first.

    Typical range
    $300–$800
    Unit
    per project (CAD)
    Source
    EcoFrost Heating

  • TSSA gas permit fee

    Typically already inside the contractor's quote rather than billed on top. EcoFrost states all gas line work in Ontario requires a TSSA permit by law.

    Typical range
    $75–$150
    Unit
    per permit (CAD)
    Source
    EcoFrost Heating

  • Complete generator gas hookup (permit, TSSA inspection, pressure test), GTA

    EcoFrost's table heading calls this the Typical Installed Price and states the TSSA permit, pressure test and inspection are included. 4 to 8 hours on site.

    Typical range
    $800–$2,000
    Unit
    per project (CAD)
    Source
    EcoFrost Heating / RenoHouse

  • ESA permit and inspection, generator's electrical side

    The electrical permit and inspection only. The TSSA gas permit is a separate fee, priced elsewhere on this page.

    Typical range
    $150–$350
    Unit
    per project (CAD)
    Source
    Kolji Bros. Electrical

  • Automatic transfer switch, installed

    KoljiBros' installation-breakdown figure. Their transfer-switch section quotes a higher $1,500-$3,000 for an automatic switch described as required for standby generators, so treat $800 as the floor of the cheaper end.

    Typical range
    $800–$2,000
    Unit
    per project (CAD)
    Source
    Kolji Bros. Electrical (installation cost breakdown)

  • Wall or floor penetration for gas line, per penetration

    Per crossing, and additive. EcoFrost notes hidden runs through finished basements may also need ceiling cutting, and that drywall patching is not included in the quote.

    Typical range
    $50–$150
    Unit
    per penetration (CAD)
    Source
    EcoFrost Heating

  • Propane setup premium over a natural gas hookup

    "more" - an addition over the natural-gas equivalent, for the fittings and pressure regulation propane needs.

    Typical range
    $100–$250
    Unit
    added cost (CAD)
    Source
    EcoFrost Heating

  • Yard trenching for gas line run

    "may add" - only where the line crosses a yard underground. EcoFrost's worked example is a pool heater 50 feet away, not a generator, so a longer generator run can sit above this.

    Typical range
    $300–$800
    Unit
    per project (CAD)
    Source
    EcoFrost Heating

  • 500-gallon propane tank, owned and installed (alternative to natural gas)

    Buying rather than renting. Refills are extra and seasonal, and RenoHouse warns a multi-day outage can drain a 500-gallon tank in 4-7 days at full load.

    Typical range
    $2,500–$3,500
    Unit
    per tank, installed (CAD)
    Source
    RenoHouse

  • 500-gallon propane tank, rental

    Per year, recurring, and excluding refills. RenoHouse also notes generators rated on natural gas typically derate 5-10% on propane, so sizing has to account for the fuel.

    Typical range
    $200–$400
    Unit
    per year (CAD)
    Source
    RenoHouse

  • Gas-fired backup generator service line, GTA (materials, labour, pressure test)

    Apex lists this among GTA gas-line prices that vary with distance, materials and permit requirements. Their underground PE service line is charged separately at $35-$75 per linear foot installed.

    Typical range
    $800–$2,200
    Unit
    per project (CAD)
    Source
    Apex Electric and Mechanical (Toronto/GTA)

  • TSSA fuel-gas permit fee, alternate Ontario estimate

    Varies with the complexity of the gas work. Ontario Generator Systems puts total permit cost for a residential generator install at $400-$800 once the ESA electrical permit and any municipal building permit are added.

    Typical range
    $100–$250
    Unit
    per permit (CAD)
    Source
    Ontario Generator Systems

What is actually inside the number?

Two quotes for the same job are hard to compare when one folds a line into its total and the other leaves it out. This is the shape of the work, stage by stage, with every figure taken from the same priced lines in the table above.

What lengthens a gas hookup, and what it costs to sign off

The base run is the small part. What moves this number is how far the generator sits from the meter, what the pipe has to pass through on the way, and whether the meter can carry the extra load at all.

The base run

  • Meter to generator, 30 to 50 ft

    $1,200–$2,200

    The standard case: a short run across a side yard to the pad.

If it is further than that

  • Runs beyond 60 ft

    $500–$1,000

    Added on top of the base run, not instead of it.

  • Each additional 10 ft of pipe

    $50–$120

    Material plus labour, priced by the foot.

If the route is hard

  • Wall or floor penetration

    $50–$150

    Charged per penetration, so a route through finished walls costs more than one around them.

  • Yard trenching

    $300–$800

    For a run that has to go under the yard rather than along a wall.

  • Meter or trunk line upsize

    $300–$800

    Only where the existing line is already at capacity for the added load.

Signed off, both sides

  • TSSA fuel-gas permit

    $75–$150

    Ontario requires this for anything gas-fired. A second published Ontario estimate for the same permit is higher, and both are in the table.

  • ESA permit and inspection

    $150–$350

    The electrical side of the same install. Pulling the two together rather than separately is one of the things that moves this total.

If there is no gas at the property

  • Propane setup premium

    $100–$250

    The premium over a natural gas hookup, before the tank.

  • 500-gallon tank, owned

    $2,500–$3,500

    Bought outright and installed.

  • 500-gallon tank, rented

    $200–$400

    The same tank as a yearly charge instead, which is a running cost rather than a one-off.

Complete hookup, GTA

$800–$2,000

One source's all-in figure covering the permit, the TSSA inspection and the pressure test. The stages above are the individual lines other sources on this page price, and this figure is not their sum.

What drives the price?

Size, access and how much of the existing electrical and gas work has to be redone move a generator gas line quote more than brand choice does. Each factor below is one a source on this page prices or names.

  • Distance from the gas meter to the generator's planned location
  • Whether the existing meter or trunk line needs upsizing for the added load
  • Route complexity: through finished walls/floors, under a driveway, or requiring yard trenching
  • Natural gas vs. propane, including the added cost of the propane setup and tank
  • Whether TSSA and ESA permits are pulled and scheduled together or separately
  • Access and site conditions (basement location, distance to an exterior wall, obstacles)
  • Automatic transfer switch size and installation complexity
  • Whether the meter is above or below grade and how easily it connects to the planned gas run

What's specific to Ontario and Toronto?

Ontario adds 13 percent HST, requires an ESA permit for the electrical work and a TSSA permit for anything gas-fired, and licenses who may do each. These are the local rules that change the total.

  • Gas fitting work for a generator must be done by a TSSA-licensed gas technician and filed under a TSSA permit; this is separate from and in addition to the ESA electrical permit covering the transfer switch and wiring.
  • Enbridge Gas is the natural gas utility serving most of Toronto and the GTA; meter and trunk line upgrades are scheduled and billed directly between the homeowner and Enbridge, independent of the generator installer's own quote.
  • HST at 13% applies on top of quoted gas line, permit, and installation costs unless a quote is explicitly stated as HST-included.
  • Propane remains the standard fallback fuel for GTA properties without natural gas service, most often on the rural edges of the region.

How can I pay less?

The biggest savings come from bundling visits, avoiding after-hours rates, and checking which fees a quote already contains. Each tip below is tied to a figure in the table above.

  • Ask your generator installer to quote the gas line, TSSA permit, and pressure test as one bundled line item rather than paying separate contractor call-outs.
  • Position the generator as close to the gas meter and electrical panel as the manufacturer's clearance rules allow to minimize linear feet of gas pipe and wire run.
  • Confirm with Enbridge early whether your existing meter needs upsizing; discovering this mid-installation can delay the project and add unplanned cost.
  • If your home already has natural gas service, it is almost always cheaper long-term than installing and maintaining a propane tank system.
  • Get the TSSA and ESA permit costs itemized separately in every quote so you can compare gas-fitting and electrical scopes apples-to-apples across contractors.

How did we research these numbers?

Every price on this page was found in the page it is credited to, and recorded with the sentence that carries it. Where a figure could not be found in its source it was removed rather than adjusted. Here is what that left, and what it could not settle.

  • Most Toronto homes already have Enbridge natural gas service, which is the default fuel choice for a standby generator since the supply is effectively unlimited with no tank rental or refill costs.
  • The single biggest cost driver on the gas side is distance: a short run from an easily accessible meter can land near the low end, while a 60+ foot run around the house, through finished space, or requiring yard trenching adds materially to the total.
  • All gas line work in Ontario legally requires a TSSA-licensed gas fitter and a TSSA permit; this is a separate approval process from the ESA electrical permit that covers the transfer switch and wiring.
  • If the existing gas meter or trunk line was sized only for a furnace and water heater, adding a generator's fuel demand can trigger a required meter or trunk line upgrade, which Enbridge quotes and schedules independently of the generator installer.
  • Propane is the fallback for homes without natural gas access, but a 500-gallon tank can be drained in as little as 4 to 7 days of continuous full-load generator operation during an extended outage, which is worth weighing against the ongoing rental or ownership cost.
  • Contractor quotes for 'generator hookup' often bundle the gas line, TSSA inspection, and pressure test into one line item, so a like-for-like comparison across quotes requires asking what's included.
  • A second Toronto/GTA contractor (Apex Electric and Mechanical) prices a full gas-fired generator service line, including materials, labour and the mandatory pressure test, at $800 to $2,200, which lines up closely with EcoFrost's and RenoHouse's separate figures for the same scope.
  • TSSA permit fee estimates vary slightly by source: EcoFrost Heating cites $75 to $150 while Ontario Generator Systems cites $100 to $250 for the same fuel-gas permit, so budget toward the higher end if a firm quote isn't in hand yet.

Sources

Who can do the work?

Home Generator Index tracks 74 HVAC and fuel line contractors across the Greater Toronto Area, rated 4.77★ on average. The three below rank highest on our review-weighted score, based on Home Generator Index's analysis of 74 GTA businesses, August 2026.

  2. EnercareYork branch

    12100 reviews

    HVAC & Fuel Line Contractors

    84/100 Home Generator Index Score

    • Says about 17 years going
    • Says it is licensed
    • Says it carries WSIB coverage
    Mapped to YorkOpen 24 hours daily
    Request a quoteFull profilefor Enercare

  3. EnercareOshawa branch

    9659 reviews

    HVAC & Fuel Line Contractors

    84/100 Home Generator Index Score

    • Says about 29 years going
    • Says it is licensed
    • Says it is an ECRA/ESA licensed electrical contractor
    Mapped to OshawaOpen 24 hours daily
    Request a quoteFull profilefor Enercare
See all 74 HVAC and fuel line contractors on Home Generator Index

Work out your own numbers

The table above is what other people paid. These calculators put your own house into the same published figures, and none of them asks for an email address.

What do the terms on a generator quote mean?

Two generator gas line quotes are hard to compare when each uses the same word for a different scope. These 3 terms appear on the line items above, and each one changes what a number covers.

TSSA permit
The Technical Standards and Safety Authority permit required by law for any gas line work in Ontario. Usually already inside the contractor's quote rather than billed on top. DIY gas work is illegal and voids home insurance.
Trunk line upsize
Enlarging the main gas run because the existing pipe cannot carry the added load. A line sized for a furnace alone typically cannot also feed a generator, so this is checked by measuring gauge and BTU load before the quote, not after.
Derate
The power a generator loses running on propane instead of natural gas, typically 5 to 10 percent. It matters because the unit has to be sized on the fuel it will actually burn, not on its headline rating.

What else changes the total?

a Generator Gas Line is rarely quoted on its own. A cost that looks like an overrun on a generator gas line quote is usually a priced line item on one of these three guides.

Frequently asked questions

How much does it cost to run a gas line for a standby generator in Toronto?

A typical 30 to 50 foot run from the meter to the generator costs $1,200 to $2,200; a full generator hookup including permit, TSSA inspection, and pressure test runs $800 to $2,000 for shorter, simpler jobs.

Does the gas line cost include the TSSA permit?

It varies by contractor. TSSA gas permit fees run $75 to $150 and EcoFrost Heating notes this is typically included in the contractor's total quote, but it's worth confirming it isn't billed separately.

What if my gas meter is too small for a generator?

If the existing line is at capacity, expect a trunk line or meter upgrade adding $300 to $800 to the project, arranged and quoted directly with the gas utility.

How much does a longer gas line run add to the cost?

Runs beyond 60 feet from the meter add roughly $500 to $1,000 on top of the base 30-50 foot pricing, and material/labour costs about $50 to $120 per additional 10 feet of run beyond that.

Is propane cheaper than natural gas for a standby generator?

Propane setup carries a $100 to $250 premium over a natural gas hookup, plus either $2,500 to $3,500 to buy and install a 500-gallon tank or $200 to $400 a year to rent one, so natural gas is usually cheaper where it's available.

How long will a 500-gallon propane tank last during an outage?

A 500-gallon tank can be drawn down in as little as 4 to 7 days if the generator is running continuously at full load.

What does the automatic transfer switch add to the total cost?

An installed automatic transfer switch, which is separate from the gas line and permit costs, runs $800 to $2,000 on Kolji Bros. Electrical's installation breakdown. Their transfer-switch section quotes a higher $1,500 to $3,000 for a whole-home switch, so ask which scope a quote covers.

Do I need a separate electrical permit in addition to the TSSA gas permit?

Yes. The gas side needs a TSSA permit ($75-150), while the electrical/transfer-switch side needs its own ESA permit and inspection, quoted at $150 to $350.

Questions to ask your contractor

  1. Is your gas fitter TSSA certified, and whose name is on the gas work?
  2. Can you run the gas load calculation for the meter before I choose a unit? Gas line cost benchmarks
  3. Is the quote priced for natural gas or propane?
  4. If the meter needs upsizing, who submits that to the utility?
  5. Who fixes it if the gas inspection fails, you or the electrician?