If you want more basement height in Ontario, you usually dig down, not lift the house. Underpinning extends the existing footings in short pits and pours new concrete underneath. House lifting raises the whole building on cribbing so a new or taller foundation can be built below it. Lifting costs more and moves every service. It is specified when the foundation has failed, not when you need two more feet of ceiling.
Bench footing is the other lowering method: cheaper, a ledge along the walls. Compare those two first in our basement lowering guide. This page is only for the lift-vs-dig question.
Key Takeaways
- Underpinning keeps the house on its footings and adds height from below.
- Lifting moves the house. Use it for a failed foundation or a missing basement, not as a default height upgrade.
- Both paths need an engineer and a municipal permit.
- Typical Toronto underpinning is $70–$100 per square foot. A lift is a different, usually larger, contract.
What Each Method Actually Does
| Basement underpinning | House lifting | |
|---|---|---|
| The building | Stays on the existing foundation while pits are opened in sequence | Is raised on cribbing and temporarily unsupported by the old walls |
| Height | Floor drops; ceiling height increases 2–3 feet on many homes | New walls can be taller, but you pay to move the whole house |
| Typical use | Legal-suite height, full-width living space, local settlement | Failed foundation, no basement, engineer will not allow under-digging |
| Stay in the house | Usually yes, upstairs | Usually no during the lift |
| Neighbour / party wall | Staged pits; written agreement on many semis | The lift itself is a site-wide event |
When Digging Down Is the Right Call
Most GTA houses already have a basement, even a short one. If the footings can take staged pits, underpinning or bench footing gets you toward 8 feet without picking the house up. That is the path for a legal basement apartment that is short on the 1.95 m / 6'5" rule.
If the only complaint is water, start with waterproofing. Full underpinning is not a leak repair. If the plate is small and there is no suite plan, read whether underpinning is worth it before you price a lift you do not need.
When Lifting Comes Up Anyway
An engineer will talk about lifting when:
- The existing foundation cannot be underpinned safely
- There is a crawl or slab and you want a full basement that the current walls cannot support
- Settlement is so far along that local pits will not restore the structure
Those are structural calls. They are not a cheaper way to gain headroom. Stronghold Underpinning designs and builds the digging-down path. If a lift is what the engineer specifies, we will say so and will not sell you pits that cannot do the job.
Permits and Cost, Without a Fake Lift Price
Underpinning in Toronto follows the City Residential Underpinning guide. Lifting is a separate structural permit with shoring, utility disconnects, and a new foundation package. We publish 2026 underpinning bands on the cost page. We do not invent a lift number from a phone call.
If two contractors disagree on lift vs underpin, get the disagreement onto drawings. The method is not a sales preference.
Find Out If You Need to Dig or Lift
Book a site review at contact us or call 647-360-6033. We measure the footings and tell you whether underpinning, bench footing, or a different structural path is the honest recommendation.
FAQs
Is house lifting cheaper than underpinning in Ontario?
Almost never on a typical GTA house that already has a basement. Lifting moves the whole structure, disconnects services, and builds a new or taller foundation underneath. Underpinning works under the existing footings in stages and is the usual height job.
When does house lifting make sense?
When the existing foundation has failed, there is no basement to lower, or an engineer has ruled out digging under the current footings. Height alone is not a reason to lift.
Can I get more basement height without underpinning?
Yes. Bench footing lowers the centre of the floor and leaves a concrete ledge. House lifting is a third path. For most Toronto homes that already have a basement, underpinning or benching is the comparison that matters.
Do I need a permit to lift a house in Ontario?
Yes. Lifting is structural work. So is underpinning. Both need engineered drawings, a municipal permit, and inspections. The City of Toronto publishes a Residential Underpinning guide for the digging-down path.
Can I stay in the house during lifting or underpinning?
Most families stay during underpinning. House lifting usually means the building is off its foundation. Plan to be out for the lift and the new walls.