N°31 — Sub-Hub Trade Bids
Sitework & Earthwork Bids for Subcontractors
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Sitework and earthwork bid opportunities are not limited to one phrase. Public owners and general contractors describe the same work as sitework, site work, earthwork, excavation, grading, clearing, demolition, erosion control, storm drainage, utilities, cut and fill, or exterior improvements. A useful sitework and earthwork bid page has to watch those terms together, not as separate searches.
ConstructionBids.ai monitors 12,500+ public bid portals and helps subcontractors turn that spread of source language into a workable daily search. Sub-Hub Free lets sitework and earthwork firms start without a credit card. Sub-Hub Pro adds the full match-score breakdown, AI scope analysis, alerts, saved bids, and document access for $39/mo after a 7-day free trial.
Use this page as a reference for where sitework and earthwork bids appear, how GC bid invitations usually reach sitework subs, and what to prepare before asking to be added to a GC bid list.
| NAICS | 238910 Site Preparation Contractors |
|---|---|
| CSI | Div 31 Earthwork, Div 32 Exterior Improvements, Div 33 Utilities |
N°02 — Live Public Bids
Open Sitework & Earthwork Bids Right Now
126 open sitework & earthwork bids across 6 states on public portals. Updated Aug 22, 2026.
Every listing is a public solicitation posted by an agency or public owner — not a GC invitation. Smaller trade contracts can often be bid directly; larger prime bids show you which projects to price for the GCs bidding them.
| Project | Agency | Location | Bid due |
|---|---|---|---|
| Lot Clearing, Boarding, and Securing Structure - TC | Arkansas Purchasing Group | AR | Aug 24, 2026 |
| 26-07 Floe971628B (Floyd) | Agriculture and Land Stewardship | IA | Aug 26, 2026 |
| 26-08 Cal883432B (Calhoun) | Agriculture and Land Stewardship | IA | Aug 26, 2026 |
| 26-09 Har892022C (Hardin) | Agriculture and Land Stewardship | IA | Aug 26, 2026 |
| Early Sequence Package 2.0: Early Site Utilities | Kentucky Purchasing Group | KY | Aug 27, 2026 |
| On-Call Excavation Service | Connecticut Purchasing Group | CT | Aug 31, 2026 |
| Lovejoy Elementary School Addition - Site Grading & Utilities | Iowa Purchasing Group | IA | Sep 2, 2026 |
| On-Call Hydro Excavation Services | Rocky Mountain E-Purchasing System | CO | Sep 4, 2026 |
| GRADING AND SURFACING | Kansas Purchasing Group | KS | Sep 16, 2026 |
| GRADING AND SURFACING. S ROCK RD FR FREEDOM ST TO 0.5 MI N OF E 55TH ST IN TH... | Kansas Purchasing Group | KS | Sep 16, 2026 |
N°03 — Award Statistics
What Sitework & Earthwork Public Work Actually Wins For
Based on 7699 awarded public sitework & earthwork projects across 15 states, drawn from public bid tabulations (2009-2026).
Live sitework & earthwork bid preview
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N°04 — Beyond Public Portals
How GCs invite sitework & earthwork subs
Sub-Hub itself lists direct public solicitations. The notes below cover the separate GC-invitation channel that runs alongside them, and how to get on those lists.
GC sitework invitations usually start from a bidder list built around equipment fleet, service geography, utility experience, bonding capacity, trucking access, safety record, and whether the package includes demolition, erosion control, or underground utilities. The invitation can arrive from a plan room, bid management platform, direct estimator email, or a civil-focused bidder list.
Sitework scopes are often split across clearing, demolition, excavation, grading, cut and fill, erosion control, storm drainage, water, sewer, aggregate base, paving prep, and site restoration. Smaller projects may bundle the full civil package. Larger schools, parks, utilities, and public works projects may separate earthwork from utilities and paving so the GC can level quantities and exclusions.
The best response confirms haul-off assumptions, unsuitable soils, rock excavation, dewatering, trench safety, utility locates, erosion-control maintenance, imported fill, compaction testing, and weather assumptions. GCs want quantities and exclusions clear enough to compare against civil sheets, geotechnical reports, and addenda.
N°05 — Bid Better
Win more of the right bids
- Search beyond sitework. Include site work, earthwork, excavation, grading, clearing, demolition, erosion control, drainage, utilities, cut and fill, and storm terms.
- State weather and seasonal assumptions for wet soils, winter shutdowns, erosion-control maintenance, paving prep, dewatering, and delayed site access.
- Call out trenching and excavation safety requirements, shoring, utility locates, confined access, and competent-person coverage when the scope includes utilities.
- Separate Division 31, Division 32, and Division 33 scope when civil sheets blend earthwork, exterior improvements, and utilities into one drawing set.
- Check addenda and geotechnical reports for unsuitable soils, rock, groundwater, haul-off, imported fill, compaction requirements, and changed utility alignments.
- Confirm whether permits, traffic control, surveying, staking, testing, SWPPP maintenance, and restoration are included or by others.
N°06 — How to Bid
How to Bid Sitework and Earthwork on Public Projects
- Step 01
Find open civil scopes
Search public portals, SAM.gov, state DOT listings, utility bids, parks departments, school districts, and local plan rooms for sitework, site work, earthwork, excavation, grading, clearing, demolition, drainage, erosion control, utilities, cut and fill, and paving prep. Site packages may be posted as civil work or bundled with a building project.
- Step 02
Read Division 31, 32, and 33
Review Division 31 earthwork, Division 32 exterior improvements, Division 33 utilities, civil drawings, erosion-control sheets, utility plans, addenda, and geotechnical reports. Confirm cut and fill, unsuitable soils, rock, groundwater, trenching, shoring, dewatering, imported fill, compaction, restoration, SWPPP maintenance, and traffic control responsibilities.
- Step 03
Check compliance and capacity
Confirm insurance, bonding, registration, prevailing-wage, certified-payroll, safety, trench-safety, and utility license requirements before pricing. Public sitework may require equipment lists, trucking capacity, traffic-control plans, competent-person coverage, DBE or subcontractor forms, and proof of similar excavation or utility experience.
- Step 04
Estimate quantities and site risk
Build the estimate from civil takeoffs, earthwork quantities, haul distances, disposal, import, aggregates, utilities, trenching, structures, erosion control, compaction testing, equipment, trucking, and crews. Use the soils report and site visit to price rock, unsuitable material, groundwater, access limits, weather, staging, and restoration risk.
- Step 05
Submit a compliant bid
For owner bids, complete forms, unit prices, addenda acknowledgments, bonds, certifications, and electronic upload steps exactly. For GC bids, provide a scope letter that names quantity basis, exclusions, soils assumptions, dewatering, traffic control, utility conflicts, testing, survey, permits, SWPPP, and restoration responsibilities.
- Step 06
Monitor tabs, awards, and addenda lessons
After opening, review bid tabs, award notices, and GC leveling questions. Sitework misses often come from quantity basis, unsuitable soils, haul-off, utility conflicts, dewatering, traffic control, or restoration assumptions. Track those lessons so future civil searches and estimates separate Division 31, 32, and 33 risk earlier.
N°07 — FAQ
Sitework & Earthwork bid questions
Where can sitework and earthwork subcontractors find public bids?
Sitework and earthwork subcontractors can find public bids on city, county, state, school district, park, utility, transportation, and federal procurement portals. Search NAICS 238910 with scope words such as sitework, site work, earthwork, excavation, grading, clearing, demolition, erosion control, drainage, and utilities.
How do sitework and earthwork subcontractors get on GC bid invitation lists?
Start with a concise capability profile, insurance certificates, bonding capacity, service area, safety contact, equipment list, trucking capacity, utility experience, and relevant public-project references. Tell estimators whether you pursue earthwork, demolition, underground utilities, drainage, erosion control, or full site packages.
Do sitework and earthwork subcontractors need bonding for public work?
Bonding depends on project size, owner rules, and the GC's subcontract requirements. Sitework packages can carry major equipment, trucking, utility, and schedule exposure, so GCs may ask for bonding capacity, a consent of surety, or proof that the firm can support the scope.
What prequalification documents do GCs usually ask sitework and earthwork subs for?
Common prequalification items include insurance certificates, safety history, EMR or OSHA information, bonding capacity, references, project-size range, financial information for larger packages, equipment list, trucking resources, trench-safety procedures, utility experience, and similar public-sitework projects.
What project scopes are typical sitework and earthwork bid opportunities?
Typical scopes include clearing, demolition, excavation, grading, cut and fill, erosion control, storm drainage, water and sewer utilities, trenching, aggregate base, paving prep, site restoration, dewatering, hauling, compaction, and sitework tied to schools, parks, civic facilities, utilities, and transportation projects.
What NAICS code should sitework and earthwork contractors use for bid searches?
The core NAICS code is 238910, Site Preparation Contractors. Use the code with text searches because many bid portals do not tag opportunities consistently by NAICS, especially when excavation, grading, utilities, demolition, and erosion control are listed separately.
How large are sitework and earthwork subcontractor bid packages?
Sitework and earthwork packages can range from small grading or drainage repairs to large civil packages with excavation, utilities, erosion control, hauling, and restoration. Review civil drawings, geotechnical reports, specifications, addenda, bonding requirements, weather exposure, site access, and equipment availability before deciding whether the package fits your capacity.
Can Sub-Hub help sitework and earthwork subs without a credit card?
Yes. Sub-Hub Free has no credit card requirement. Sitework and earthwork subcontractors can start with bid discovery and upgrade to Sub-Hub Pro when they need full score breakdowns, alerts, saved bids, document access, and AI scope analysis.
How do I find sitework bids without GC relationships?
Search owner procurement portals, SAM.gov, state DOT sites, utility solicitations, school district bids, parks department postings, and plan rooms. Use those public projects to contact bidding GCs with an equipment list, trucking capacity, utility experience, safety record, and bonding information.
What documents matter most for earthwork pricing?
Read the civil drawings, Division 31, Division 32, Division 33, erosion-control plans, utility plans, addenda, and geotechnical report together. The soils report, haul-off requirements, groundwater notes, rock assumptions, compaction criteria, and restoration details can change the estimate materially.
N°08 — Start With Sitework & Earthwork Bid Matches
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