Who Furnishes Materials on a Sitework Package? GC vs. Sitework Subcontractor

Material responsibility is one of the most expensive assumptions in a sitework proposal. A price for labor and equipment is not the same as a price that includes procurement, freight, storage, waste and every permanent material shown on the drawings.

JDP's Normal Material Structure

Unless JDP's written proposal specifically states otherwise, JDP normally furnishes the labor, equipment and supervision for its accepted scope while the general contractor or owner furnishes permanent project materials. The signed proposal and subcontract control the job-specific responsibility.

Permanent Materials That Should Be Assigned Clearly

• Utility pipe and fittings.

• Storm, sanitary or water structures and appurtenances.

• Aggregate, stone and imported select material.

• Concrete and asphalt.

• Specialty erosion-control products or permanent stabilization materials when not expressly included.

• Any owner-specified or approved-manufacturer product with procurement lead time.

Hauling and Disposal Are Different Questions

Material supply should not be confused with trucking or disposal. A subcontract may include hauling excavated material while excluding the purchase of imported fill, or it may include equipment loading while the GC provides trucks. Each responsibility should be written rather than inferred from the word earthwork.

Why This Affects Schedule

Even when the GC furnishes material, JDP's production can depend on delivery dates, staging space and approved submittals. A late structure or pipe shipment can stop an otherwise ready excavation crew. Assigning procurement responsibility is therefore also a schedule-control decision.

A Better Bid Requirement

Bid instructions should identify whether each major material category is subcontractor-furnished, GC-furnished or owner-furnished. When that table is clear, contractors can price the same scope and the project team can see where procurement risk actually sits.