How to build relationships with general contractors
GCs keep calling the subs who make their jobs easier: clean bids, complete paperwork, crews that show up when promised, and problems raised early. Choose a short list of GCs and earn your way onto their must-call list.
Subcontractors build relationships with general contractors by being the sub that makes the GC's job easier. That means clean, complete bids on time, paperwork that never has to be chased, crews that show up when the schedule says, and problems raised early with a fix attached. Pick a short list of GCs whose work fits yours, get prequalified, perform well on a first job, and follow up like a business partner rather than a vendor. Many estimators keep a short list of subs they call first in each trade. The goal is to get on that list and stay there.
What general contractors want from subs
Ask a GC project manager what makes a good sub and the answers are rarely about price alone. Price gets you considered. The rest decides whether they call you again.
- Bids that are complete and comparable. A clear scope, inclusions and exclusions, and pricing on the bid form they sent. An estimator leveling eight bids at 1 p.m. on bid day will favor the one that is easy to read.
- Paperwork without chasing. A current certificate of insurance, a signed subcontract, submittals on schedule, pay apps in the right format, and lien waivers with every pay request.
- Manpower as promised. If you said six on Monday, show six on Monday.
- No surprises. Raise RFIs and conflicts early. Tell the PM about a material delay the day you learn it, not the day it hits.
- A clean handoff. Punch items closed quickly and closeout documents delivered without a third reminder.
Step by step: how to build a GC relationship
1. Choose your target GCs
Not every GC is a good fit. List the GCs building the work you do, in the size range you can carry, in the area you serve. Then filter for how they pay: ask other subs, check whether they have a history of liens filed against their jobs where public records allow, and read their standard subcontract. Five good GCs beat twenty you bid once and never hear from.
2. Get on their bid lists and prequalify
Call the chief estimator or preconstruction manager, not the front desk. Ask how they invite subs and what their prequalification needs. Have your safety record, insurance, licenses, financial references, and project list ready to send the same day. The guides on getting on general contractor bid lists and getting prequalified go through the paperwork.
For federal work, the U.S. Small Business Administration notes that large prime contractors post subcontracting opportunities on its SUBNet database and use the Small Business Search to find small businesses, so a complete profile there helps. APEX Accelerators can also help small firms connect with primes.
3. Bid like a partner
Read the documents, attend the pre-bid walk if there is one, and send questions early. Submit on time, on their form, with clear clarifications and exclusions. If you spot a scope gap or a cheaper way to build something, say so. Estimators remember the sub who caught the missing fire caulking scope before bid day.
4. Perform on the first job
The first project is the audition. Put your best foreman on it. Show up to the pre-construction meeting prepared. Submit submittals early. Send weekly manpower and progress updates without being asked. Keep the area clean. If you make a mistake, own it and fix it fast.
5. Make the PM's paperwork easy
Pay apps that match the schedule of values and come with waivers, change order requests with clear backup, and closeout binders done on the first ask. This is where office staff build the relationship as much as field crews.
6. Handle disagreements professionally
You will disagree about change orders, back charges, and schedule. Keep it in writing, keep it about facts, and keep it off the job site in front of crews. A GC can work with a sub who disagrees well. They stop calling a sub who makes every issue personal.
7. Follow up after the job
After closeout, ask the PM and super what went well and what you could do better. Ask what they have coming up. Send a short note when they win a job you bid. Keep a simple record of every contact so follow-up happens on a schedule, not when you remember.
Worked example: from one invite to repeat work
Here is an illustration. A small painting sub wants work from a regional GC that builds medical offices. Year one, it prequalifies, bids four jobs, and wins one: a $92,000 clinic. It puts its strongest foreman on that job, turns in submittals two weeks early, and closes 40 punch items in three days.
| Measure | Year one | Year two |
|---|---|---|
| Bids invited | 4 | 11 |
| Jobs won | 1 | 4 |
| Revenue from this GC | $92,000 | $410,000 |
| Average days to get paid | 52 | 38 |
The numbers are made up, but the pattern is common: more invites, a better hit rate, and faster pay because the PM trusts the pay apps. Track your bid hit ratio by GC to see where the relationship is working and where you are just a check price.
Signs a GC relationship is worth the effort
Relationships run both ways. Before you invest years in a GC, check whether it treats subs the way you want to be treated. A GC that bids you as a check price and never awards is costing you estimating hours you could spend elsewhere.
- It pays on the terms in the subcontract, and calls when a payment will be late instead of going quiet.
- It processes change orders within a pay cycle or two rather than holding them until closeout.
- Its supers run organized sites with clear look-ahead schedules and areas ready when promised.
- It awards a fair share of what you bid, and tells you why when you lose.
- It releases retainage without months of chasing.
If a GC fails most of these, keep bidding selectively and put your relationship effort into the ones that pass.
Mistakes that damage GC relationships
- Bidding low to get in, then fighting for change orders on every gap.
- Pulling crews to a different job without telling the super.
- Letting insurance certificates lapse so the GC has to hold your payment.
- Missing bid day or sending a number with no scope.
- Going around the PM to the owner.
- Taking on more work than you can staff and letting every GC down a little.
Templates, terms, and tools
Use the subcontractor COI tracking template to keep your own certificates current with each GC, and the construction bid template for clean submissions. Related reading: how to build repeat clients in construction and how to follow up on construction bids. Smart Business Automator keeps bids, pay apps, change orders, and compliance documents organized by GC and job, through construction workflow automation.
Frequently asked questions
How do subcontractors find general contractors to work with?
Look at who is building the work you do: permit records, public bid results, plan rooms, and local trade associations. Then contact the chief estimator directly and ask how they invite subs.
Should a sub work for only one GC?
Usually not. Depending on one GC for most of your revenue leaves you exposed if it slows down or pays late. A handful of strong relationships is safer.
How do I get a GC to call me first?
Perform on the first job, keep your paperwork current without being asked, and bid cleanly every time they invite you. Being easy to work with is what earns the first call.
How can a small sub find federal prime contractors?
The SBA says large primes post opportunities on SUBNet and search for small businesses in its Small Business Search, and APEX Accelerators can help make connections.
