By HomeGuide's national 2026 figures, pool digs cost $1,500 to $5,000 in soft soil and $15,000 to $20,000 where boulders, hardpan or rock ledge are in the way. In Chicago, the job we do most from this group is the base for a new garage slab off the alley.
Each dollar figure below is a national range published by HomeGuide, and none of them is a quote from us. Chicago blue clay, alley access, buried debris from old buildings and the haul to a dump site are what really set the cost of a job here. We read every HomeGuide page used here in October 2026.
What does pool excavation cost for an inground pool in the Chicago suburbs?
Pool excavation for an inground pool in soft soil with no obstructions is $1,500 to $5,000 in HomeGuide's pool section, and its project table shows $1,000 to $5,000. Rock, boulders or tight access push it to $15,000 to $20,000. A full inground pool costs $25,000 to $100,000.
Does the pool builder dig, or should I hire my own excavator?
The pool builder normally arranges the dig, often with an excavator working for them. You can hire us directly, but the hole has to follow the pool builder's layout, depths and over-dig, so we settle the plan together before digging.
How long does it take to dig a pool in Chicago-area clay?
A pool dig in Chicago-area clay takes one to three days in most suburban yards. Wet clay after rain or groundwater in the hole add time, and shallow dolomite around Joliet can turn it into rock work. HomeGuide puts small jobs at 1 to 3 days and difficult ones at 3 weeks or more.
Does pool excavation include hauling the clay away?
Pool excavation may or may not include hauling the clay away, so check the line. A pool makes many loads of spoil, and HomeGuide prices removal at $140 to $230 a cubic yard or $1,400 to $2,300 a load. Wet clay is heavy, which matters on a big haul.
What does filling in an old suburban swimming pool cost?
Filling in an old swimming pool has no price on HomeGuide. The job is breaking out or punching the shell, filling with clean material compacted in layers (fill dirt is $5 to $25 a cubic yard) and grading the top. Most villages require a permit, and compaction records matter if you will build there later.
What if the pool hole hits soft clay, water or rock?
Soft clay or water in a pool hole means over-digging and a compacted stone base, plus pumping, while rock means slower digging with a breaker. HomeGuide notes that rock can add $15,000 to $20,000 or more to a pool dig. Agree in the contract on how those surprises are priced.
What does it cost to prepare ground for a home addition in Chicago?
Preparing ground for a home addition combines grading and foundation digging: HomeGuide lists grading for new construction or an addition at $1,000 to $5,000 and foundation excavation at $1,500 to $10,000, with no separate addition line. In Chicago, a licensed general contractor runs most addition work, and the footing must tie into the old foundation as the plans show.
What does a new garage slab or shed pad cost to dig and prep in Chicago?
Digging and prepping a new garage slab or shed pad costs about $1,000 to $2,500 by HomeGuide's driveway, patio and deck pad figures. Most Chicago garage jobs start with breaking out the old cracked slab, digging out soft clay and building a compacted stone base for the new thickened-edge slab.
For a number on your own Chicago-area property, call or text (872) 201-3760. We look at the lot, then send the scope and the price in writing.