How to Start a Garage Door Business: A Complete Guide

Garage door work is one of the few trades where a single technician with a well-stocked van can generate real revenue fast — most service calls take 30-90 minutes and the parts markup is healthy. But it's also a trade with real injury risk (torsion springs store enough energy to break bones), so starting right matters more here than in a lot of other trades.

Get licensed and bonded correctly

Requirements vary a lot by state. Some states require a specific contractor's license (California's C-61/D-16 specialty classification, for example), others just want a general business license and a contractor's bond, and a few have no license requirement at all beyond registering the business. Check with your state contractor licensing board before you take your first payment — operating unlicensed in a state that requires it can void your insurance in a claim.

At minimum you'll want:

• General liability insurance ($1-2M coverage is standard for this trade given the injury risk from springs and heavy doors)
• A contractor's or installer's bond if your state requires one
• Workers' comp the moment you hire your first helper

Build your tool and parts inventory

You don't need a full shop to start, but you do need the trade-specific gear: torsion spring winding bars (never use screwdrivers — this is how techs get seriously hurt), a door lift/jack, vice grips, a good drill with the right bit sets, an opener programming kit, and a ladder rated for the work. Stock your van with the torsion springs and extension springs in the 3-4 most common sizes for your market, plus rollers, cables, and hinges — most emergency calls are spring or cable failures, and showing up without the part means a second trip.

Pick your service mix

Most garage door businesses build revenue from a blend of:

• New door installation (steel, insulated, wood, carriage-style)
• Spring, cable, and roller replacement
• Opener installation and repair (LiftMaster, Chamberlain, Genie are the big brands you'll service most)
• Panel replacement after collision damage
• Tune-ups and maintenance

Emergency repair — especially "my door won't open and my car is trapped" or "the spring just snapped" — is where you'll build your reputation fastest, because it's high-anxiety for the customer and they remember who showed up.

Line up suppliers

Open accounts with a couple of door and opener distributors (Clopay, Amarr, Wayne Dalton, and CHI are the major door manufacturers) so you're not paying retail or waiting on big-box store stock. Becoming an authorized dealer for a major opener brand can also feed you warranty work and referrals.

Budget realistically

Plan on $15,000-$40,000 to get moving: a used cargo van, initial tool kit, starter parts inventory, insurance, licensing fees, and a little marketing budget. You can start leaner if you're doing installs as a sub for a bigger company first and building capital before going fully independent.

Once the jobs start coming in, staying organized on quotes, scheduling, and invoicing matters as much as the wrench work — a lot of new garage door business owners run their whole operation from ServiQ so estimates, job history, and payments live in one place instead of a notebook in the van.