Subcontractor management is where construction projects gain or lose schedule, margin, and compliance: a sub who is missing insurance documentation, billing incorrectly against the project's SOV, or communicating only by phone creates risk and administrative burden that compounds across every project they touch.
This guide covers the full subcontractor management lifecycle, from onboarding compliance requirements through assignment, documentation, billing, and payment, so you can run sub relationships that are organized, documented, and defensible at every stage.
Start free→Subcontractor management is the set of processes by which a prime contractor or GC recruits, onboards, assigns, monitors, pays, and closes out the work of subcontractors on a construction project. At its core, it is a relationship management problem: each subcontractor is an independent business with their own workforce, billing practices, compliance requirements, and communication preferences. Managing a dozen or more subs on a complex project while maintaining schedule, budget, and compliance on all of them simultaneously is one of the most operationally demanding tasks in construction. The compliance piece alone is a significant administrative burden. Every sub on a commercial project is typically required to maintain general liability insurance, workers compensation insurance, and a valid contractor's license as a condition of working on the project and sometimes of being paid. The GC must collect and verify these documents, track their expiration dates, and ensure that coverage is current at all times. An expired insurance certificate creates both legal exposure for the GC and potentially voids the GC's own coverage if a claim arises while a sub is working without current insurance. Billing and payment management is the other major subcontractor management challenge. Most commercial subcontracts require subs to bill against a schedule of values aligned with the prime contract's SOV, so that the GC can verify sub progress against the project and certify sub draws without creating a billing gap between what the sub claims and what the GC bills the owner. Subs who submit draws that do not align with the project SOV create reconciliation work on every payment cycle. Subs who miss lien release requirements delay the GC's own payment from the owner. Managing sub documentation, billing, lien releases, and payment tracking across a dozen trades is the administrative infrastructure of a multi-trade project.
Subcontractor payment timing is directly linked to the GC's own payment cycle. Most GC-sub payment terms specify that the GC pays subs within a defined window after receiving payment from the owner (pay-when-paid clauses) or within a defined period regardless of owner payment (pay-if-paid or fixed-period terms). In either case, the sub's payment depends on the GC receiving and certifying a valid draw, which depends on the sub submitting a draw with a matching conditional lien release. A sub who does not submit the lien release with their draw delays the GC's owner certification, which delays the GC's receipt, which delays the sub's payment. The cascade runs in both directions: a sub who has not been paid has cash flow pressure that affects their ability to pay their own workforce and suppliers, which affects their schedule on the project. Subcontractor management failures are rarely isolated: they propagate through the project's schedule and cash flow in ways that affect every trade on the job. The documentation and proof requirements for subcontracted work are also more complex than for self-performed work, because the GC must be able to demonstrate, in any dispute or lien claim context, that sub work was completed to the required standard and that the sub has been paid for that work. A GC who cannot produce sub lien releases at project closeout has title-chain exposure that can hold up the owner's financing or sale of the property, creating a dispute that extends well past the project completion date.
Scaftra's subcontractor portal gives subs a direct interface for submitting documentation, viewing their scope assignments, and tracking their payment status without requiring the GC to relay information through phone calls and emails. Sub assignments are tied to project scheduling through Scaftra's membership model: assigning a sub to a project phase gives them access to the relevant project scope and documentation. Pay application management covers sub-tier billing through the project SOV so that sub draws are verified against the same schedule of values that drives the prime contract billing. Lien release tracking is built into the payment workflow so that sub releases are collected and recorded as part of every payment cycle rather than chased at closeout.
Bring one project onto Scaftra. We'll set up your trades, your rooms, your proof chain, and your vendor portal, and connect it to the financial system you already run.