Excavation · Cambridge
Foundation Digging in Cambridge
Footing and foundation excavation in Cambridge — new homes, additions, detached garages and underpinning for the low basements in Galt's century homes.
Frost depth in Cambridge puts footings at a minimum of four feet below finished grade, and the engineer's drawing sets the rest. Our job is to get to that depth with clean, plumb walls and a level base, without over-digging — every extra inch of over-dig is money in engineered fill or extra concrete.
Two kinds of foundation work come up in Cambridge more than most places. The first is additions on post-war Preston and East Galt bungalows, where the new footing has to meet an old block foundation without undermining it. The second is underpinning — lowering the basement floor in a Galt or West Galt century home so a six-foot rubble-stone basement becomes a usable eight-foot one. Both are precision jobs, dug in sections and coordinated with the concrete crew and engineer.
What's included
- Footing and foundation-wall excavation to engineered depth, with the base checked for level and bearing
- Addition and attached-garage foundations tied to existing structures
- Underpinning excavation in engineered sequences for basement lowering
- Hand-digging near gas, hydro, water and sewer services
- Dewatering where the water table is high — expect this near the Grand and Speed
- Backfill and compaction in lifts once the foundation is waterproofed and cured
Soil and water on your lot
Near the rivers, spring digs can hit water at six to eight feet; we plan a sump and pump for it. In the gravel outwash along the Grand the walls of the excavation want to slough, so we bench or shore. In the till on the Hespeler and East Galt flats the walls stand, but boulders are a given. Shallow dolostone in older Galt is the one thing that changes the price meaningfully — we'll flag it before you sign.
Working with your builder
We work off the same drawings as the forming and concrete crews and confirm the corners and depth before they arrive. If the plan shows a step footing, a walkout or a frost wall, we dig it that way the first time.
Frequently asked questions
How deep do footings have to be in Cambridge?
Below the frost line — four feet at minimum — and deeper if the engineer calls for it based on soil bearing. Walkout and stepped foundations vary along the wall.
Can you dig for an addition without damaging my existing foundation?
Yes. We dig away from the existing footing at a safe angle, keep the load path intact, and hand-dig the last stretch where the new footing meets the old block.
How long does a foundation dig take?
A typical Cambridge addition or garage footing is a day or two. A full basement for a new build is two to five days depending on soil, water and access.
Serving Cambridge and surrounding areas. Contact us for a free, no-obligation quote specific to your project.