Subcontractor management: scheduling, paperwork and quality

Why subcontracting is back on the table

Most owners turn to subcontractors for one of three reasons: a seasonal surge they cannot staff, a specialty they do not want to hire for full time (spray foam, crane lifts, concrete cutting), or a backlog that is starting to cost them customers. The labor market makes the first and third reasons more common. US construction job openings were 289,000 in September 2026, up from 194,000 a year earlier^[1], and average hourly earnings for production workers at specialty trade contractors reached $39.05, up 4.7% on a year earlier^[2].

That pressure cuts both ways. Good subs are busy too, and they will drop the customer who pays slowly or sends them to jobs with no scope. Treat subcontractor management as a supply relationship you run on purpose, not a favor you call in when the board overflows.

There is no shortage of firms to approach. The US had 521,315 specialty trade contractor establishments with paid employees in 2023^[3], from one-truck electricians to large mechanical shops. The work is finding the few who will show up, do it your way and answer the phone when the customer calls back.

Decide what you will and will not sub out

Before you recruit anyone, write down which work goes to subs and which stays in-house. A simple rule set keeps the decision consistent when the office is under pressure.

• Keep in-house: diagnostic calls, maintenance-agreement visits and anything where the tech is expected to recommend further work. These visits are where your reputation and future sales come from.
• Sub out: well-defined installs with a clear scope, specialty tasks your crews do rarely, and overflow on jobs that are already sold and scoped.
• Never sub out without approval: work under a warranty you issue, work in occupied homes with vulnerable residents, and anything requiring a permit pulled in your name unless your license and local rules allow it.

The onboarding packet

Ask every subcontractor for the same documents before the first job, and put a renewal date on each one. The table below is a starting checklist; your attorney and insurance agent should confirm what your state and policies require.

The certification line matters more than owners expect. EPA's Lead Renovation, Repair and Painting Rule requires anyone paid to disturb painted surfaces in pre-1978 homes, childcare facilities and preschools to be certified and their employees trained in lead-safe work practices^[4], so a handyman or roofing sub working on older housing needs to be trained and certified.

Safety paperwork belongs here too. Falls are the leading cause of death in construction, with 389 of 1,034 construction fatalities in 2024 being falls to a lower level^[5]. Ask roofing, gutter and attic subs for their written fall protection plan and keep it on file.

Contractor or employee? Check before you schedule

A sub you schedule like an employee, supply with tools and pay by the hour can start to look like an employee. The IRS groups the evidence of control and independence into three categories: behavioral control, financial control and the type of relationship^[6]. In practice, keep the relationship on the contractor side by scheduling the outcome rather than the method.

• Give a scope, a site, a date window and a quality standard; let the sub decide how to staff and sequence the work.
• Let them supply their own tools, vehicles and helpers, and invoice you per job or per agreed unit.
• Do not require them to wear your uniform unless your agreement and your advisor say it is appropriate; a branded vest for site identification is a common compromise.

State rules can be stricter than the federal test, so ask your accountant or employment attorney to review your agreement once.

What the subcontract agreement should cover

Keep the agreement short enough that the sub actually reads it. These clauses prevent most disputes:

1. Scope and standards: reference a job-specific scope sheet plus your written workmanship standards and photo requirements.
2. Customer contact: the sub may discuss the job with the customer but may not quote additional work, take payment or hand out their own card.
3. Schedule commitments: confirmation deadline, arrival window, what happens if they cancel late, and how weather days are handled.
4. Change orders: any change in scope goes through your office first, in writing, before work continues.
5. Callbacks and warranty: who returns for defects, how fast, and at whose cost.
6. Payment terms: what triggers payment (completion checklist, photos, inspection pass) and the timeline after that.
7. Insurance, licensing and safety: the documents above stay current or the sub comes off the schedule.
8. Non-solicitation: the sub does not market to your customers for an agreed period.

Scheduling subs into your board

1. 01

   Offer the job with a scope sheet

   Send the address, job type, materials list, photos and the customer's preferred window. Ask for a yes or no by a deadline, such as end of day.

2. 02

   Confirm in writing

   Once accepted, send a confirmation with date, arrival window, site contact, parking or access notes and your office's direct line.

3. 03

   Put the sub on your board as a named resource

   Show them as a lane on the dispatch board so CSRs never double-book the slot or promise a time the sub has not agreed.

4. 04

   Reconfirm the day before

   Call or text the sub and the customer. If the sub cannot confirm, you still have time to move the job or send your own crew.

5. 05

   Track arrival and completion

   Ask for an arrival text and a completion text with photos. Log both against the job.

6. 06

   Close out the same day

   Review the checklist and photos, note any open items and approve or hold payment.

When customers call to ask where the crew is, your CSR should see the same information your dispatcher sees. If the sub is late, your office calls the customer first; the customer hired you, not the sub.

Quality checks that do not depend on trust

Spot-check the first three jobs any new sub does for you in person, then move to a sample, such as one job in five, plus every job with a complaint. A short completion checklist works better than a long one:

• Before and after photos from the same angles, including the work area, the equipment label or material wrapper, and the cleaned-up site.
• Test results where relevant: system running, breaker labeled, door balanced, water test on flashing.
• Customer walkthrough done and any concerns written down.
• Waste removed and site left as found.

Score each job pass or fail against the checklist and keep the score history. When a sub fails twice in a quarter, stop offering them new jobs until you have talked it through.

Example: one overflow week

Example: a fictional six-tech HVAC company sells nine replacement installs in a heat wave week but can only staff six. The owner offers three installs to two vetted subs with scope sheets on Monday. Both confirm by 5 p.m. The dispatcher adds the subs as lanes on the board, the CSR reconfirms customers on Wednesday, and the subs text photos at completion. One install fails the checklist because the condensate line was not secured; the sub returns the next morning at no charge under the callback clause, and payment is released after the second set of photos. The company keeps all nine sales and has a record to decide which sub gets first call next summer.

Payment terms and the money conversation

Slow payment is the fastest way to lose good subs. Agree the trigger (approved checklist), the timeline after the trigger and the method, then stick to it. If you hold back a retainage on larger jobs, say so in the agreement and release it on a set date. Pay-when-paid clauses, where you only pay the sub after the customer pays you, can be restricted by state law and they strain the relationship; discuss them with your attorney before using one.

Keep subs informed about upcoming volume. A short note each month with expected install counts lets them plan their own crews, and it signals you intend to keep the relationship.

For related scheduling decisions, see weather planning for roofing crews and how change orders should flow.