Sitework is often the most unpredictable scope on a construction project. Subsurface conditions, soil types, and site logistics can dramatically affect the cost of earthwork, and the scope of underground utilities, paving, and site improvements adds significant complexity to the estimate. A professional sitework estimate accounts for all of it — from the first cut to the final paving.

Here is what goes into a complete sitework takeoff and why accuracy matters on every project.

What a Sitework Estimate Covers

Earthwork

Earthwork is the foundation of every sitework estimate. It includes:

• Clearing and grubbing — acres of vegetation removal and disposal
• Rough grading — cubic yards of cut and fill to achieve the rough grade shown on the civil drawings
• Fine grading — square feet of fine grading for paving, landscaping, and building pads
• Excavation — cubic yards of excavation for foundations, utilities, and below-grade structures
• Backfill and compaction — cubic yards of structural fill, with compaction testing requirements
• Export and import — cubic yards of material exported from or imported to the site, based on the cut/fill balance
• Erosion control — silt fence, inlet protection, and other BMPs required by the stormwater pollution prevention plan

Underground Utilities

Underground utilities are a major component of most sitework scopes. The estimate includes:

• Storm drainage — linear feet of storm pipe by material (RCP, HDPE, PVC) and size, plus catch basins, manholes, and inlets by count
• Sanitary sewer — linear feet of sewer pipe by material and size, plus manholes and cleanouts
• Water main — linear feet of water main by material (ductile iron, PVC) and size, plus valves, hydrants, and service connections
• Electrical and communications — linear feet of conduit and duct bank for site electrical, telecom, and data
• Gas — linear feet of gas main and service lines

Paving and Surfacing

Paving quantities are calculated from the civil drawings and include:

• Asphalt paving — tons of asphalt by thickness and mix type, or square yards by thickness
• Concrete paving — cubic yards of concrete for drives, parking lots, and hardscape
• Base course — cubic yards of aggregate base by thickness and area
• Curb and gutter — linear feet of concrete curb and gutter by type
• Sidewalks and walkways — square feet of concrete or paver walkways

Site Improvements

Site improvements include all the work that makes the site functional and attractive:

• Landscaping — square feet of sod, planting areas, and irrigation
• Site furnishings — benches, bike racks, bollards, and signage
• Fencing and gates — linear feet of fence by type and height
• Retaining walls — square feet of retaining wall face area by system type
• Lighting — site light poles and fixtures by count

Common Sitework Estimating Mistakes

Incorrect cut/fill balance — The cut/fill balance determines whether material must be exported from or imported to the site. An incorrect balance can result in significant cost errors — either paying to haul material off-site that could have been used as fill, or importing expensive fill material that was not needed.

Ignoring soil conditions — Soil type affects earthwork productivity significantly. Rock excavation, expansive soils, and high groundwater all add cost that must be identified in the geotechnical report and reflected in the estimate.

Missing utility conflicts — Existing underground utilities must be identified and protected or relocated. Missing utility conflicts can result in costly field extras and project delays.

Forgetting erosion control — Stormwater pollution prevention is required on virtually every construction project. Erosion control measures — silt fence, inlet protection, stabilized construction entrances — represent a real cost that must be included in the estimate.

Underestimating mobilization — Heavy equipment mobilization and demobilization costs are significant on sitework projects. These costs must be included in the estimate, particularly for projects that require multiple equipment moves.

What to Expect from a Professional Sitework Takeoff

A professional sitework estimating service delivers:

• Accurate earthwork volumes with cut/fill balance analysis
• Underground utility quantities by system, material, and size
• Paving quantities by type and thickness
• Site improvement quantities from civil and landscape drawings
• Labor hours based on current equipment productivity rates
• Organized output by CSI division or work area — ready to price

Union Estimating provides sitework takeoff and estimating services for general contractors and sitework subcontractors across all project types, with 48–72 hour turnaround on most projects.

The Bottom Line

Sitework estimating requires civil engineering knowledge, understanding of soil conditions, and a systematic approach to the takeoff. A professional sitework estimate captures every component — giving you the accuracy to bid competitively and the confidence to execute the work profitably.