What a Home Inspector Checks on Your Garage Door (and How to Get Ready)

Introduction

When a house changes hands in the London area, a home inspection is almost always part of the deal. The buyer hires an inspector to walk the property and write up its condition, and the garage door is one of the items on that inspector's list. It is a big moving part, it has real safety features attached to it, and it is easy to test in a few minutes. For a seller, a clean garage door section on the report is one less thing for a buyer to negotiate with. For a buyer, that same section is a quick read on how well the home has been maintained.

The catch is that most homeowners have no idea what an inspector is actually looking at. They assume the door either "works" or it does not, and they are surprised when the report flags a missing label, a sensor mounted too high, or a door that will not hold itself halfway open. None of those are dramatic problems, and almost all of them are inexpensive to fix once you know they exist. This guide walks through exactly what a home inspector checks on a residential garage door, why each item is on the list, the findings that show up most often on southern Ontario reports, how to get your door ready before the inspector arrives, and what the common fixes cost in 2026. Every external link here points to a live page on a recognized inspection or industry body, and every price matches the figures we publish across the rest of this site.

Why the Garage Door Is on the Inspection List at All

The garage door is usually the largest and heaviest moving object in a house, and it moves under high spring tension every single day. That combination is exactly why inspectors pay attention to it. According to the U.S. Consumer Product Safety Commission, cited in the InterNACHI guide to garage doors and openers, garage doors account for roughly 20,000 emergency-room visits a year, most of them pinched fingers, and sixty children have died since 1982 because a door failed to reverse on contact. Those numbers are why the safety features exist, and why an inspector treats them as more than a formality.

There is a money angle too. A buyer reading a report does not separate "the garage door needs a $150 sensor" from "the roof is near the end of its life." A list of small deferred-maintenance items adds up in a buyer's mind and becomes leverage at the negotiating table. Because a garage door is so visible and so easy to test, a tidy door section signals a well-kept home, which is the same reason a fresh door does so much for curb appeal and resale value and why door replacement consistently ranks among the better home-value upgrades a homeowner can make.

What a Home Inspector Actually Checks

A general home inspector is not a garage door technician, and the two roles look at the door differently. The inspector's job is to operate the door, observe its condition, test the safety features they can safely test, and call out anything that looks defective so the buyer can bring in a specialist. Here is the checklist most inspectors work through, drawn from the InterNACHI reference above and the guidance published by the Door & Access Systems Manufacturers Association (DASMA).

1. The contact-reversal safety feature

Since 1991, garage door openers sold in North America have been required to reverse the door automatically if it hits an object while closing. The inspector tests this by watching the door close onto an obstruction and confirming that it not only stops but reverses and opens fully. A door that stops and sits there, or one that keeps pushing, fails the test. If your door reverses too early on its own, before it touches anything, that is a different problem covered in our guide to a garage door that reverses before closing, and an inspector will note that too. The sensitivity is set by a force adjustment on the opener that should only be changed by a trained technician.

2. The photo-eye sensors

Openers built since the early 1990s must also have a second, non-contact entrapment protection: a pair of photo-eye sensors that sit near the floor on each side of the opening and shine an invisible beam across the doorway. Break the beam while the door is closing and the door reverses immediately. Inspectors check three things: that the sensors are present, that they are mounted no more than six inches above the floor (high enough to protect a child or pet, low enough to catch them), and that they actually reverse the door when the beam is broken. Misaligned or dirty sensors are one of the most common findings on any report. Our guide to garage door photo-eye sensors covers how they work and how to realign them.

3. The manual emergency release

Every opener has a red release cord that disconnects the door from the motor so you can lift it by hand during a power outage or an emergency. Inspectors confirm the release is present, that it is red and easy to spot, and that it hangs no more than six feet above the floor so an adult can reach it. Many inspectors will pull the cord to confirm it works, then re-engage it. If you have never used yours, our guide to the manual release during a power outage explains the whole routine.

4. The warning labels

This is the finding that surprises sellers most, because the labels feel like fine print. Inspectors look for four warning labels that manufacturers are supposed to place on the system: a spring warning on the spring assembly, a general warning on the back of a door panel, a wall-control warning near the push button, and a tension warning on the bottom bracket. On a door that is fifteen or twenty years old, these labels have often peeled, faded, or been painted over. A missing label is a minor note, not a safety hazard, but it does show up in writing.

5. The springs, cables, and counterbalance

The inspector will look at the springs above the door and the lift cables running down each side, checking for obvious rust, fraying, gaps in the spring coils, or a spring that has clearly already broken. They will not adjust or touch these parts, and neither should you: the springs hold enormous stored energy and are a professional-only repair, a point DASMA makes repeatedly in its safety guidance. If the cables look frayed or a spring looks tired, the inspector flags it and recommends a technician. Our guides to torsion and extension springs and to garage door cable failure explain the warning signs in detail.

6. The panels, track, rollers, and brackets

Both faces of the door get a look for dents, cracks, rot on a wood door, and any separation of materials. The inspector checks that the vertical and horizontal tracks are securely fastened and not bent, that the rollers turn, and that the brackets, especially the top brackets and the bottom brackets, are tight and undamaged. A door that has come off its track, or one that is close to it, is a clear finding; our guide to an off-track garage door covers how that happens. Inspectors are specifically trained not to operate a door until they are satisfied the track and bracing are sound, because doors have fallen on people and cars during inspections.

7. Door balance and manual operation

With the opener disconnected by the release cord, the inspector lifts the door by hand. A properly balanced door moves smoothly, does not slam down or fly up, and holds its position when stopped about halfway. A door that drops the moment you let go, or one that is hard to lift, has a spring system that is out of balance and is wearing out the rest of the door faster than it should. This is the same one-minute check we teach homeowners in our garage door balance test, and it is worth running yourself before an inspector ever does.

8. The wall control and remotes

The wall-mounted push button should be mounted at least five feet above the floor, in clear sight of the door, and away from moving parts, so that a small child cannot reach it. The inspector confirms the button works and that the door responds. They may also note an old opener with no rolling-code security, which is less a safety issue than a break-in risk, a topic we cover in our guide to the security risk of an old opener.

9. Weather seals and the opening

Finally, the inspector glances at the bottom seal, the seals around the jamb and header, and the general fit of the door in its opening, looking for daylight, water staining, or pest entry points. These are comfort and efficiency items rather than safety ones, but a door that clearly does not seal is worth noting on a report, especially heading into an Ontario winter.

What a Home Inspector Does NOT Do

It is just as useful to know the limits of the inspection. A general home inspector is working to a standards of practice document that specifically excludes certain garage door tasks. Inspectors are not required to verify or certify the auto-reverse feature, and they will not adjust the spring tension, the opener force settings, or the sensor alignment, because those are technician tasks that can damage the door or injure the person doing them. They also will not dismantle anything, pull covers, or diagnose the internal electronics of the opener.

In practice, this means the inspection tells a buyer whether the door appears to work and appears to be safe on the day of the visit. It does not tell them how many cycles are left in the springs or whether the opener is about to fail. For that deeper picture, a buyer or a seller can book a professional tune-up, which is a different and more thorough look at the same hardware. Our garage door tune-up guide explains what a technician checks that an inspector does not.

The Findings That Show Up Most Often on London-Area Reports

After years of getting calls from buyers and sellers holding an inspection report, a short list of findings comes up again and again. None of them are unusual, and none of them should scare anyone off a house. They are simply the wear items on a part that runs every day.

• Photo-eye sensors misaligned, dirty, or mounted too high. The single most common note. Often a five-minute realignment.
• The door does not reverse on contact, or reverses sluggishly. Usually a force-setting adjustment, sometimes a sign of a tired opener.
• Missing or illegible warning labels. Cosmetic on the report, cheap to resolve with a replacement label set.
• The door is out of balance. Drops when released or is hard to lift by hand. Points to worn springs.
• Frayed cables or rusted, aging springs. Flagged for a technician; never a DIY fix.
• Dented panels, a bent track section, or loose brackets. Ranges from cosmetic to a real repair.
• An opener past its useful life. Openers typically last 15 to 20 years, and an inspector will note a unit that is clearly at the end of that range.

Realistic 2026 Costs to Fix the Common Findings

Prices on this page are before HST, for a typical residential door in the London area, and each figure is all-in: parts, labour, and the service call.

The good news for both sellers and buyers is that the great majority of garage door inspection findings are inexpensive to put right. Here are realistic 2026 numbers for the London area:

• Service call (absorbed into any repair): $85 flat.
• Photo-eye sensor realignment or replacement: $125 to $250 for new safety sensors; a simple realignment is often just the service call.
• Remote or keypad reprogrammed: $80 to $120.
• Lift cables replaced as a pair: $130 to $350.
• Rollers, full set on a single door: $120 to $320.
• Hinges replaced, the full set: $150 to $275.
• Track realigned or repaired: $150 to $350.
• Single torsion spring on a single door: $229 to $320; a pair on a single door runs $260 to $400, and a pair on a double door $300 to $550.
• Yearly multi-point tune-up (a smart pre-sale move): $120 to $220.
• A new opener supplied and installed: $525 to $1,200, depending on the drive type.

For a bigger-ticket finding, like a door that is dented across several panels or has structural rust, the question shifts from repair to replacement. That decision has its own math, which our repair versus replacement guide walks through, and you can get a ballpark for a new installed door in a couple of minutes with our online price estimator. For a broader breakdown of what garage door work costs across Ontario, see our 2026 repair cost guide.

How to Prepare Your Garage Door Before an Inspection (Seller Checklist)

If you are selling, an hour of attention beats a surprise on the report every time. You do not need to touch anything dangerous. Everything on this list is safe for a homeowner to do or to arrange.

1. Run the safety-reversal test yourself. With the door open, lay a flat board or a roll of paper towel on the floor in the door's path and press the button to close. The door should reverse when it touches the object. If it does not, book a technician before the inspection, not after.
2. Wipe and check the photo-eyes. Clean the two lenses near the floor, make sure they point at each other, and confirm both indicator lights are steady. Wave a broom through the beam as the door closes to confirm it reverses. Our sensor guide shows what steady versus blinking lights mean.
3. Run the balance test. Pull the release cord with the door closed, lift the door by hand, and see whether it stays put around waist height. If it slams down or resists lifting, the springs need a professional's attention. Re-engage the opener when you are done.
4. Find the manual release and make sure it works. Confirm the red cord is present, reachable, and re-engages after use.
5. Look for the warning labels. If they are missing or unreadable, a technician can supply a fresh set during a tune-up.
6. Do a slow visual on the hardware. Look for frayed cables, a rusty or broken spring, loose brackets, dented panels, and a bent track. Do not touch the springs or cables. Note anything that looks off and have it quoted.
7. Book a tune-up if the door is over ten years old. A single visit that lubricates, balances, tightens, and inspects the whole system is the cheapest insurance against a messy report. It is the same annual service DASMA recommends in its homeowner maintenance guide.

Running through this list is really just an expanded version of the monthly garage door safety test we recommend to every homeowner. If you do it once a month, the inspection takes care of itself.

If You Are Buying: How to Read the Garage Door Section

On the buyer's side, the trick is to keep the door findings in proportion. A page of small notes about sensors, labels, and balance is normal on a ten-year-old door and represents a few hundred dollars of work, not a reason to walk. What deserves a closer look is anything structural or safety-critical: a door that will not reverse at all, a broken spring, badly frayed cables, a bent track, or an opener at the very end of its life. Those are worth pricing before you finalize, either as a credit from the seller or as a first-week project after closing.

A useful move for a buyer is to ask a garage door company for a quick quote on the flagged items. Most reputable shops will give a transparent price over the phone from the inspector's photos, and it turns a vague worry into a real number you can negotiate with. It also tells you whether you are looking at a tune-up or a full replacement, which is the difference between a couple of hundred dollars and a couple of thousand.

Conclusion

The garage door section of a home inspection is short, predictable, and almost entirely about safety and upkeep rather than big surprises. An inspector confirms the door reverses on contact, that the photo-eyes and the emergency release work, that the labels are present, that the springs and cables look sound, and that the door is balanced and runs on solid track. Nearly everything they might flag is inexpensive to fix, and every one of those fixes is easier to handle before your house is on the market than during a negotiation.

If you are getting a London-area home ready to sell, or you have just received an inspection report with a few garage door notes on it, our team is happy to run a full safety and balance check, quote any flagged items plainly, and get the door reversing, sealing, and running the way a buyer wants to see. Call 519-619-7901, reach us through our contact page, or price a new door on our price estimator. AA Advantage Doors has kept London-area doors safe and running since 2009; our BBB profile has the service history.

Frequently Asked Questions

Will a home inspector actually test the garage door safety features?

Most will test what they can safely test: they will operate the door, break the photo-eye beam to confirm it reverses, and often test the contact-reversal by closing the door onto an object. However, inspectors work to a standards of practice that does not require them to certify the auto-reverse system, so some note it as "tested, appeared functional" rather than guaranteeing it. If safety is a concern, a dedicated tune-up is more thorough.

My door is missing its warning labels. Is that a real problem?

It is a minor note on the report, not a safety hazard in itself. The labels matter because they warn about the springs and the bottom bracket, which are the genuinely dangerous parts. A technician can supply a fresh set of manufacturer labels during a service visit, and it is worth doing so the report reads clean.

How high should the photo-eye sensors be, and why does it matter?

No more than six inches above the floor. Mounted at that height they catch a small child, a pet, or an object lying in the doorway before the door can close on it. Sensors that have been bumped up higher, a common finding, leave a gap underneath and are flagged for repositioning.

The inspector says my door is "out of balance." What does that mean?

It means the springs are no longer holding the door's weight properly. A balanced door, lifted by hand with the opener disconnected, stays put when you stop it halfway. An out-of-balance door drops or springs up, which forces the opener to work harder and wears out the whole system faster. It is a spring adjustment or replacement, and it is a professional job.

Should I fix everything on the report before selling, or leave it for the buyer?

Small safety and maintenance items, misaligned sensors, a sluggish reversal, missing labels, an out-of-balance door, are usually worth fixing before listing, because they are cheap and they keep buyers from using a list of little problems as leverage. Bigger items, like a full door replacement, are often better left as a negotiated credit so the buyer can choose the door they want.

How much should I budget to clear a typical garage door report?

For the common bundle of findings on an older door, sensor realignment, a reversal adjustment, fresh labels, and a balance and tune-up, most sellers spend somewhere in the range of a single tune-up visit at $120 to $220 plus any parts, so a couple of hundred dollars covers it. Spring or cable replacement, if needed, adds to that; see the cost list above for specifics.

Is a home inspection the same as a garage door tune-up?

No. A home inspector confirms the door appears to work and appears to be safe on the day of the visit, across the whole house in a couple of hours. A garage door tune-up is a specialist spending time on that one system: lubricating, balancing, tightening every fastener, and inspecting the springs, cables, and bearings for remaining life. The two are complementary, and a pre-sale tune-up is the surest way to get a clean inspection.

Does an old but working opener need to be replaced before selling?

Not necessarily. If it reverses on contact, has working photo-eyes, and runs smoothly, a working opener passes. That said, openers typically last 15 to 20 years, and a very old unit with no rolling-code security may be noted as a break-in risk. If yours is at that age, replacing it before listing is a modest cost that removes a line from the report and adds a small selling point.