Underpinning & basement lowering
More headroom. A stronger foundation. Done once.
Engineered underpinning that turns a low, damp basement into real living space, and stabilizes the footing while we're at it.
5-star Google reviewsFamily-owned & operatedOur own crew, never subcontractors
Is this you?
Signs you need underpinning & basement lowering
- Basement ceiling under 7 feet
- Planning a legal apartment or in-law suite
- Footings exposed, settling or undermined
- Sloped lot and you want a walkout too
How we fix it
What actually happens
- 01
Assessment & engineering
We measure, check soil and footings, and get engineered drawings and the permit moving.
- 02
Sequenced pins
Sections are dug and poured in an engineered order so the house is always supported.
- 03
New floor & drainage
New slab, weeping tile and sump where needed. Waterproofed while everything is open.
- 04
Sign-off
Engineer's inspection, permit closed, documentation in your hands.
What it costs
Priced in writing, after we've seen it.
What moves the price
- Basement size and how much depth you're gaining
- Soil conditions and access
- Whether the walls need waterproofing while they're open
How we quote
Every quote is fixed and in writing after an on-site assessment. No allowances, no surprises.
Why AVH
Three reasons homeowners pick us for this
- Engineered drawings and permits handled for you
- Our own crew from excavation to slab, no subcontractors
- Written warranty on the structural work
Questions
Asked about underpinning & basement lowering
Can we live in the house during underpinning?
Usually, yes. The work happens below grade and the house stays supported throughout. Expect noise and a busy driveway for a few weeks.
How much height can we gain?
Most homes gain enough for a code-compliant ceiling. We confirm the exact number after checking footings and soil.
Do you handle the permit?
Yes. Underpinning needs engineered drawings and a municipal permit. We coordinate both.
Related
Often done together
Cracks don't fix themselves. Let's look before it costs more.
A free, no-pressure assessment from the people who'll actually do the work.