A garage door is the largest moving object in most homes, and it is held in balance by springs under enormous tension. That single fact shapes the entire business: the skill barrier is real, the liability is real, and the customer almost never shops around when the door is stuck with their car inside.
Those conditions make garage door service a genuinely good business to own. They also make it unforgiving of an owner who is underinsured or underpriced. This is the practical walk through the 10 steps. Licensing and insurance requirements vary by state and city, so verify locally before you act.
Garage door licensing is inconsistent across the country. Some states regulate it under a general contractor or specialty contractor license once your jobs exceed a dollar threshold. Others require nothing specific for repair work but do require permits for a full installation. Many cities have their own registration on top.
The line that matters most: repair versus installation. Replacing a spring or an opener is often treated differently from installing a new door assembly, and installations frequently require a permit. Ask your state licensing board and your local building department directly, because guessing here is how new owners end up doing unpermitted work they have to redo.
If you will touch openers, wiring, or hardwired circuits, understand where the electrical line sits too. In some jurisdictions the receptacle work belongs to a licensed electrician.
An LLC to separate personal assets from the business, then an EIN from the IRS (free, minutes), then a dedicated business bank account with a card for parts and fuel. In a trade with this much physical liability, the entity separation is not paperwork, it is the point.
This is the step where garage door differs from most trades, and where the cheapest policy is the most expensive decision.
Get quotes from an agent who writes garage door contractors specifically. A generic policy can exclude exactly the spring-related claim you most need.
Every experienced garage door tech knows someone with an injury story. Torsion springs store enough energy to break bones, and the common failure mode for a new tech is not ignorance of the steps but underestimating the winding bars.
Learn from someone who does it daily before you do it alone. Buy proper winding bars rather than improvising. Know how to identify wire size, inside diameter and wind direction, and how to measure a spring correctly so the replacement is actually balanced. A door that is out of balance destroys the opener you just sold them and brings you back on your own dime.
Start residential service. It turns into cash fastest, teaches you the trade at volume, and every repair customer is a future door replacement.
They have completely different economics and mixing them up is a common way to lose money while looking busy.
Build a flat-rate price book for the repairs you do constantly: a pair of torsion springs, a single spring, cables, rollers, a bottom seal, opener replacement, a tune-up. Price them once, then quote the same number every time instead of doing arithmetic in a driveway. Springs in particular should be priced as a job, not by the part, because the value is in doing it safely and in balance.
Two pricing decisions worth making deliberately. First, always quote springs in pairs when both are the same age and explain why: the second one is going to fail soon and the labor is already spent. That is honest advice and better economics for the customer. Second, charge a real service call or diagnostic fee so a no-repair visit still pays, exactly as covered in what to charge for a service call.
A stuck door with a car trapped behind it is an emergency in the customer's mind, and they are not collecting three quotes. Same for a door that will not close at night, because now the house is open.
That urgency is your best margin. Be reachable, quote a clear after-hours premium, and show up when you said. The competitor who sends everything to voicemail after 5pm is handing you the least price-sensitive work in the trade.
First-trip completion decides your profitability more than your hourly rate does. A second trip for a part is a drive you do not get paid for.
Open accounts with a garage door distributor before you need one, and carry the failure items in the van: a working range of torsion springs, cables, rollers, hinges, a bottom seal, remotes, and at least one opener. You cannot stock every spring size, but the twenty most common failures in your market should never send you back to the shop.
If you move into installations, understand lead times on door sections and get the deposit before you order, since a custom door is not resellable.
Track revenue per job, parts cost per job, and first-trip completion rate. Also track your repair-to-replacement conversion: how often a service call on an old door turns into a new door sale later. That number is where a service business quietly becomes a much larger one.
You need three things and none of them is a dashboard to learn: quote fast, invoice on the spot, get paid. That is what FieldForge does. You hold a button and say the job, for example "replaced a pair of torsion springs and both cables, one and a half hours labor", and it builds the itemized invoice from your price book and texts the customer a link to pay by card before you leave the driveway. On installations, the estimate carries a deposit the customer pays at approval, so you are not fronting the cost of a custom door out of your own account. The reasoning behind that is in should contractors take a deposit.
The skill barrier that makes this trade intimidating is the same one that keeps it profitable. Learn it properly, price it honestly, and the phone will not stop.