GRADELINE county guide
Excavation in Collier County
Soil regimes, rock depth, haul logistics and the contractors who work Collier County, Florida — the local ground data behind every bid.
Collier County is home to roughly 416,233 people, part of the Naples-Marco Island, FL metro area, growing about 8.1% over the last five years, covering about 1,997 square miles of land — a metropolitan-adjacent county of Florida where site work scales with the building cycle.
Ground conditions
South Florida site work is a race between peat and bedrock. Organic soils (muck, marl, and peat of the Everglades margins) run 1 to 6 feet deep and demand over-excavation and disposal or peat stripping to reach mineral subgrade; they saturate instantly and pump under wheel loads. Beneath the peat sits Miami oolite or Tamiami limestone, often within 1 to 3 feet in Miami-Dade and Broward, that digs with large toothed buckets when young and soft, but rips hard or requires hydraulic hammer work where cemented caprock layers interleave. Water control is the defining constraint: the water table sits at or near grade, canal and pump infrastructure is omnipresent, and dewatering, cofferdams, or cut-off walls are standard for any deep excavation. Wet season (May-October) effectively doubles the effort on any open cut. Expect rock quarries and marl borrow sources to dominate the haul mix rather than sand pits.
Dominant soil textures include fine sand, fine sandy loam, silt loam; 68.4% of the county has bedrock or a restrictive layer within 50 inches of the surface — rock clauses belong in every bid; the median water table sits about 3 inches down, so dewatering is routine on deeper cuts.
| Soil regime | South Florida Marsh Peat & Bedrock Limestone |
|---|---|
| Dominant soils | Fine sand, Fine sandy loam, Silt loam |
| Shallow bedrock (≤50 in) | 68.4% of county |
| High shrink-swell soils | 0.0% of county |
| Median water table | 3 in deep |
| Slope >15% | 0.0% of county |
Haul costs & materials
Haul distance moves county prices more than machine rates do. Here, the nearest major aggregate source is Golden Gate Quarry, about 4.9 miles out (with 13 active quarries within 50 miles).
Construction demand
Construction demand sets how busy crews are and how far out they book. 1,945 single-family permits were issued in the last 12 months (a -17.9% three-year trend), and 2,736 total housing units across all types, and About 12,121 residents work in construction, and 53 site-prep establishments are registered in the county.
Water, septic & flood
Water decides more site outcomes than any other input. In this county, 89.3% of soils carry severe limitations for conventional septic drain fields, so perc tests and alternative systems are common here, and 61.6% hydric soils mark seasonally saturated ground.
Water & ground hazards
Water and geology set the site rules here: 61.6% hydric soils signal seasonally wet ground across the county.
Rough cost estimator
Bulk excavation is commonly priced per cubic yard — roughly $2 to $8 for ordinary soil and far more where rock must be hammered, which applies to a meaningful share of this county. Use the table for ballpark volumes, then confirm with line-item bids from Collier County crews.
| Project volume | Typical range | What it covers |
|---|---|---|
| 100 cubic yards | $200 – $800 | Pool hole or small trenching job, easy soil |
| 500 cubic yards | $1,000 – $4,000 | House pad cut or driveway cut on easy ground |
| 1,000 cubic yards | $2,000 – $8,000 | Basement dig or modest site cut, before hauling |
| Rock excavation | $40 – $100+ / cubic yd | Hammered or blasted rock, priced separately |
| Machine + operator | $100 – $250 / hr | Hourly rate for mid-size excavator or dozer |
National ranges, not a quote: bulk excavation is usually priced per cubic yard, roughly $2 to $8 for ordinary soil and $40 to $100 or more where rock has to be hammered or blasted. Rock, groundwater and haul distance move the number most.
Excavation contractors in Collier County
Published listings from the GRADELINE directory, ranked by rating. Every crew serves its own radius — confirm coverage for your address.
01. USA SiteWorx
Naples, FL
Naples, FL
03. Kemp's Bobcat Service, Inc.
Naples, FL
04. Freeman Bobcat
Naples, FL
FL
Common questions
What is the ground like in Collier?
South Florida site work is a race between peat and bedrock. Organic soils (muck, marl, and peat of the Everglades margins) run 1 to 6 feet deep and demand over-excavation and disposal or peat stripping to reach mineral subgrade; they saturate instantly and pump under wheel loads. Beneath the peat sits Miami oolite or Tamiami limestone, often within 1 to 3 feet in Miami-Dade and Broward, that digs with large toothed buckets when young and soft, but rips hard or requires hydraulic hammer work where cemented caprock layers interleave. Water control is the defining constraint: the water table sits at or near grade, canal and pump infrastructure is omnipresent, and dewatering, cofferdams, or cut-off walls are standard for any deep excavation. Wet season (May-October) effectively doubles the effort on any open cut. Expect rock quarries and marl borrow sources to dominate the haul mix rather than sand pits. About 68.4% of the county has rock or a restrictive layer within 50 inches of the surface.
How deep is the water table in Collier?
The water table sits about 3 inches down. Holes dug deeper than that usually need pumps to stay dry. Pools, basements and septic fields are all designed around it.
How many excavation contractors work in Collier?
GRADELINE lists 5 published excavation and site work contractors for Collier, Florida. Search the directory by ZIP to see who covers your address.
Sources & data
- USDA NRCS SSURGO county soil data (ground conditions, shrink-swell, water table)
- FEMA National Flood Hazard Layer (floodplain share)
- US Census Building Permits Survey (construction demand)
- County permit authorities (grading, septic, burn permits)
- 811 Before You Dig, Common Ground Alliance
This guide is general information, not legal or engineering advice. Permit thresholds, fees and restrictions are set by Collier County and Florida agencies; confirm with the county before work starts.