One of the most common questions homeowners ask before booking an excavation contractor is “how long will this take?” The answer depends on what you’re digging, where you’re digging it, and what’s in the ground. This guide covers realistic timelines for the most common GTA excavation projects in 2026 — from pool digs to basement walkouts to drainage work.
How Long Does Excavation Take? GTA Project Timelines
Pool Excavation
Dig time: 1–3 days
A standard inground pool (16×32 ft, 5.5 ft average depth) takes 1–2 days to excavate with a mini excavator, including soil removal and basic site cleanup. Larger pools or restricted access (small gate, tight backyard) push toward 3 days. Add permit approval time — currently 6–12 weeks in most GTA municipalities — before any machine touches your yard.
Foundation Excavation
Dig time: 2–5 days
New home foundation excavation in the GTA takes 2–5 days depending on footprint, depth to bedrock or groundwater, and access for trucks to remove soil. A standard 40×60 ft residential foundation at 8 ft depth typically runs 3 days for a crew with a tracked excavator and continuous truck rotation.
Basement Walkout or Underpinning
Excavation time: 3–7 days
Creating a basement walkout requires cutting through the existing wall, excavating the exit trench, and installing a stairwell or window well. The excavation phase is 3–5 days for a standard residential project. Underpinning (lowering a basement floor by excavating below the existing footing in sections) is slower — 5–14 days depending on basement size and the number of underpinning bays.
Drainage and Grading Work
Dig time: 1–3 days
Surface regrading or a French drain system for a standard residential lot takes 1–2 days for the excavation, plus time for drainage pipe placement and backfill. More complex systems with catch basins and outlet structures take 2–3 days. No permit required for most surface drainage work — scheduling is usually the main delay.
Utility Trenching
Dig time: 4–8 hours to 2 days
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📞 Call 416-317-3090 Request a Quote →Utility trenching for a single service (gas, water, electrical) on a standard residential lot typically takes half a day to a full day. Longer runs or multiple services in one trench take 1–2 days. Ontario One Call locates must be completed at least 5 business days before work starts — factor this into your scheduling.
Site Preparation
Dig time: 2–7 days
Full site preparation for a new build includes stripping topsoil, rough grading, subgrade excavation, and compaction. A standard residential lot takes 3–5 days for a complete prep. Large lots or complex terrain can take 5–10 days.
What Actually Slows Down Excavation Projects
The machine time is usually the smallest part of the timeline. Here is what actually causes delays:
- Permit approval: 4–16 weeks depending on municipality and project type
- Ontario One Call locates: Minimum 5 business days before digging
- Contractor scheduling: Spring and summer are peak season — 2–6 week lead times common
- Weather: Heavy rain makes clay soil unworkable and can stop machine access
- Rock: Unexpected bedrock can multiply dig time 3–5x and requires a hydraulic hammer
- Groundwater: Water table at depth requires dewatering, which adds time and equipment
- Utility conflicts: Unmarked or mismarked utilities require rerouting
How to Get Your Project Started Faster
- Get your permit application in early — it takes weeks regardless of when the work starts
- Book your excavation contractor early in the season or book a fall/winter slot when scheduling is easier
- Complete Ontario One Call as soon as you have a contract — the 5-day clock starts the day you call
- Have decisions about scope, access, and soil disposal logistics ready before mobilization day
OCM Excavation provides same-week scheduling on smaller jobs and typically 1–2 week lead times on residential projects during peak season. We cover all of the GTA including Toronto, Richmond Hill, Vaughan, Markham, Newmarket, Barrie, Brampton, and Mississauga.
Call 416-317-3090 or get a free quote and we’ll let you know our current availability.