Garage Walk-Through Doors: Should You Add a Side Man Door or a Pass Door in the Garage Door Itself?

Introduction

Almost every homeowner who has ever lugged a lawn mower, a bag of soil or a bicycle out of the garage has had the same thought: there has to be a better way than raising a 200 pound door every single time. That thought is what leads people to search for a walk-through door, also called a man door, a service door or a pedestrian door. In garage door language there are two very different products hiding behind that one idea, and they are not interchangeable. One is a normal hinged entry door installed in the wall of the garage, beside or behind the overhead door. The other is a pass door, a small hinged panel built directly into the sectional garage door itself so you can step through the big door without opening it.

Those two options have almost nothing in common when it comes to cost, code, insulation, resale value and long-term reliability. In our experience serving London and the surrounding area, most homeowners who ask for a pass door are better served by a side entry door, and the ones who genuinely need a pass door usually have a specific reason: a detached shop with no spare wall, a laneway garage on a tight lot, or a commercial building with no other opening. This guide walks through both options honestly, including the parts of the pass door story that manufacturers do not put in the brochure, and gives you realistic 2026 Ontario numbers so you can plan a budget. Every external link below was checked against a live page before publishing.

What Is a Walk-Through Door, Exactly?

The industry uses a few overlapping terms, so it helps to sort them out first.

The side entry door (man door, service door)

This is a conventional hinged exterior door, usually 32 or 36 inches wide, installed in a framed opening in the garage wall. It sits in its own jamb with its own lockset, weatherstripping and threshold. It has nothing whatsoever to do with the overhead door. Structurally it is the same product you would put anywhere else on the house: an insulated steel or fibreglass slab in a prehung frame.

The pass door (pedestrian door in the garage door)

A pass door is a hinged door built into one section of the sectional garage door. When the garage door is closed, you can open the small door and step through the big one. When the garage door opens, the pass door goes up with it. It requires a special reinforced door section, a heavy aluminum frame, an interlock switch that prevents the opener from running while the pass door is open, and a raised threshold across the bottom of the opening. On residential sectional doors it is uncommon in Canada. On commercial steel sectional doors it is a recognized option: Clopay, for example, publicly announced a redesigned pedestrian pass door for commercial overhead sectional steel doors, describing it as intended for applications where a standard entry door cannot be installed because of space limitations.

The terminology on your quote

If you are comparing quotes from different companies, watch the wording. The Door & Access Systems Manufacturers Association publishes a plain-language glossary in its Technical Data Sheet TDS-160 on sectional garage door terminology, which is the reference most manufacturers work from. A quote that says "man door" almost always means a separate door in the wall. A quote that says "pass door" or "pedestrian door" means the door built into the sectional. Confirming which one you are being priced for is worth a two-minute phone call, because the price gap between them is large.

Why Homeowners Want One

The reasons come up again and again on service calls, and they are all reasonable.

• Convenience for small trips. Taking out the recycling, grabbing a rake, wheeling out a bike. Cycling the overhead door for each of these adds up.
• Cycle life on the springs and opener. Every open and close counts against the rated cycle life of your torsion springs. A household that cycles the door ten times a day instead of four will wear out a 10,000 cycle spring set in a fraction of the time.
• Heat loss in winter. An overhead door open for two minutes on a January morning dumps the heat out of an attached garage and pulls cold air toward the house wall. A 32 inch door open for eight seconds does not.
• Access when the power is out. A separate walk-through door means you can always get into the garage without touching the manual release.
• Backyard access. On a detached garage or a shop, a rear or side door means you are not marching everything around the front of the building.
• Quieter comings and goings. If your garage sits under a bedroom, the noise of a full door cycle at 6 a.m. is not welcome. Our noisy garage door guide covers the mechanical side of that problem, but simply cycling the door less often helps too.

Option One: A Side Entry Door in the Garage Wall

For most London-area homes, this is the right answer. It is cheaper, warmer, easier to service and it does not touch the engineered garage door system at all.

What is involved

A carpenter or general contractor frames a rough opening in the garage wall, installs a header sized for the span, and hangs a prehung insulated steel door with a deadbolt. On a brick or brick-veneer wall the masonry work adds cost and time. On a frame wall with siding, the job is often a one-day project. Where the door goes depends on your lot: the side wall is the common choice, but a rear door into the backyard is popular on detached garages, and it can be the more useful of the two.

2026 Ontario cost expectations

Prices on this page are before HST.

For a straightforward side entry door in a frame wall on an existing garage, budget roughly $1,200 to $2,500 installed in the London area. That range covers a basic insulated steel prehung slab, framing, a header, exterior trim, weatherproofing and a standard lockset. A brick or block wall pushes the number toward $2,500 to $4,500 because of the cutting, lintel and masonry patching. A fibreglass door, a glazed lite, a keypad deadbolt or a wider 36 inch accessible opening will each add a few hundred dollars. Prices vary with the contractor and the condition of your wall, so treat these as planning numbers, not quotes.

Permits and code

Cutting a new opening in an exterior wall usually needs a building permit in Ontario municipalities, because you are altering the structure and adding a header. That is a different situation from simply replacing an existing garage door, which we cover in our guide to building permits for garage door replacement in Ontario. Call the City of London building division or your township office before you book the work. A permit for a new door opening is inexpensive and it protects you at resale.

There is also a fire separation issue to respect. In an attached garage, the wall and ceiling between the garage and the living space are a designed barrier, and any door in that barrier has rules attached to it about self-closing hardware and construction. A new door to the outside does not touch that barrier, but a new door from the garage into the house absolutely does. If that is what you are planning, involve the building department early. Related to this: an attached garage should never be treated as ordinary interior space, which is why we wrote our guide to carbon monoxide safety in attached garages.

Security and weather

A side entry door is a real exterior door and it deserves real exterior door hardware. A solid deadbolt with a one inch throw, a reinforced strike plate with three inch screws into the framing, and a door that swings into a properly shimmed jamb will resist a kick far better than the hollow builder-grade doors we sometimes find on older garages. Our garage door security guide covers the broader picture, including why a garage is often the softest entry point on a house. On the weather side, keep the sweep and jamb seals in good condition. The same logic that applies to jamb seals on the overhead door applies here, and a well-sealed service door is also one of the best ways to keep mice and wasps out of the garage.

Option Two: A Pass Door Built Into the Garage Door

Now the harder conversation. A pass door solves a real problem, but it introduces several new ones, and homeowners are rarely told about them up front.

Why it is a specialty product

A sectional garage door is engineered and tested as a complete system. Cutting a doorway into one of its sections removes structure from the middle of a panel that is carrying load every time the door moves. Manufacturers who offer pass doors handle this by building the section as a purpose-made assembly: a heavy extruded aluminum perimeter frame, extra reinforcement above and below the opening, and a matching heavy hinged leaf. This is not something that can be retrofitted into an existing door on site. If a contractor offers to cut a pass door into your current garage door, decline. DASMA's technical data sheet on adding weight to a garage door assembly is blunt about the general principle: garage door systems are not designed to accommodate materials or weight added after the fact, and altering them can unbalance the door, overwork the opener, damage springs and void the warranty.

The weight problem

A pass door assembly typically adds somewhere in the range of 50 to 90 pounds to the door, depending on size and construction. That weight has to be counterbalanced, which means a heavier spring package, and often a heavier duty opener. It also means the section carrying the pass door needs more support, in the same way an oversized or double-wide door needs reinforcement struts to keep the panel from bowing. A properly specified pass door door is fine. A pass door added to an under-sprung system is a service call waiting to happen.

The threshold you will trip over

This is the complaint we hear most from people who already have one. A pass door needs a raised threshold across the bottom of its opening, usually four to six inches tall, to carry the frame and seal against water. You step over it every single time. It defeats the purpose entirely for wheeled items: you cannot roll a mower, a wheelbarrow, a stroller or a bicycle through a pass door without lifting it over the sill. If your reason for wanting a walk-through door is wheels, a pass door is the wrong tool.

Insulation and air sealing

A pass door creates a large perimeter of seal joints in the middle of your insulated door. Even with good weatherstripping, that perimeter is a weak point for air leakage and heat loss, and it is a spot where seals compress and wear over years of use. If you have invested in an insulated door for a heated garage or a garage under living space, the pass door works against that investment. Our article on why garage door insulation matters explains what you are trying to protect.

Safety interlocks

Any pass door installed on a powered door must have an interlock switch that prevents the opener from operating while the pass door is not fully closed and latched. This is non-negotiable. A garage door that starts to travel with the pass door swung open will destroy the pass door, the section and potentially the tracks in a couple of seconds. Interlock switches are simple devices, but they are also one more component to keep adjusted and one more thing that can strand you with a door that will not run.

Cost

Because pass doors are a specialty order, expect a significant premium. In the Ontario market in 2026, adding a factory pass door to a new sectional door commonly adds $2,500 to $5,000 or more to the door price, depending on the manufacturer, door model and whether a heavier spring and opener package is required. Note that this is often more than the total cost of simply framing in a separate service door in the wall. For context on the base cost of the door itself, see our 2026 Ontario garage door price guide.

When a pass door genuinely makes sense

There are legitimate cases. A garage or shop built lot line to lot line with no spare exterior wall. A laneway or rear garage where the only exterior wall available faces a neighbour's fence with no room to swing a door. A commercial or agricultural building where staff need frequent foot access through the only opening. In those situations the pass door is not a luxury, it is the only option, and it is worth doing properly with a factory-built section.

How to Decide: A Short Checklist

1. Do you have a usable exterior wall? If yes, a side entry door will almost always be cheaper, warmer and more practical.
2. Will you be moving anything on wheels through it? If yes, rule out the pass door because of the threshold.
3. Is the garage heated or under living space? If yes, favour the option that keeps your insulated door intact.
4. Are you buying a new garage door anyway? A pass door has to be ordered with the door, so this is the only moment the option is on the table.
5. Have you checked the setback and swing? A door that swings into a walkway, a property line or a snowbank is a nuisance. Check where it will open and which way.
6. Have you priced both? Ask for a written quote on each. Homeowners are frequently surprised that the wall door wins on price.

Planning the Opening: Practical Details People Forget

Size the door for what you actually carry

A 32 inch door is the default, but a 36 inch door costs very little more and makes a real difference when you are carrying a bin of firewood or a piece of plywood on edge. If accessibility is a consideration now or in the future, go with 36 inches. The same reasoning applies to the main opening, which we cover in our garage door sizing guide.

Think about the snow

In southwestern Ontario, an out-swinging door on the north or west side of a detached garage can be blocked by drifted snow for days at a time. If the door is your winter access route, put it where the snow does not collect, and keep a shovel on the inside.

Add a light and a switch

A service door that you use at night is far more useful with an exterior fixture above it and a switch inside the jamb. Have this run while the wall is open. Retrofitting it later means opening the wall again.

Keep the swing clear of the door tracks

Inside the garage, the vertical tracks, the wall control and the spring anchor all take up wall space near the opening. Confirm the new door swings clear of all of it before the framing is cut. It is a five-minute check that avoids a permanent annoyance.

Do not forget the lockset strategy

If the service door is the way you get in when the power is out, make sure someone in the household actually carries that key, or install a keypad deadbolt. It is a common and slightly comic failure mode: the homeowner installs a service door, never carries the key, and still ends up pulling the manual release in the dark.

Frequently Asked Questions

Can a pass door be cut into my existing garage door?

No, and no reputable installer will do it. The pass door section is a factory-built assembly with a reinforced frame, and the spring package is calculated for the finished door weight. Cutting an opening into an installed section removes structure, unbalances the door and voids the manufacturer's warranty.

Is a side entry door cheaper than a pass door?

In most cases yes, often by a wide margin. A framed service door in a frame wall commonly runs $1,200 to $2,500 installed in the London area, while a factory pass door option on a new sectional door commonly adds $2,500 to $5,000 or more. The exception is a masonry wall with difficult access, where the framing work can narrow the gap.

Do I need a building permit for a new service door?

Usually yes, because cutting a new opening in a load-bearing exterior wall requires a header and is a structural alteration. Requirements differ by municipality, so confirm with your local building department before work starts. Our Ontario permit guide explains how the rules apply to garage work generally.

Will a pass door make my garage colder?

It adds a long perimeter of weatherstripped joints to the middle of your door, so yes, it is a weak point for air leakage compared to an uninterrupted insulated section. Good seals keep it manageable, but the seals wear and will need periodic attention.

Can I put a window in the service door?

You can, and a lite makes the garage brighter. Understand the security tradeoff: a glazed lite near the lockset gives an intruder a route to reach the thumbturn. If you want glass, choose a high lite, use a double-cylinder deadbolt only where local code allows it, or select tempered obscure glass set well away from the hardware.

Does a walk-through door affect my garage door warranty?

A separate door in the wall has no effect on the garage door warranty at all, which is one of its quiet advantages. A factory-ordered pass door is covered by the manufacturer as part of the door. Any field-cut opening in a section will void the warranty.

Where can I read the industry references myself?

DASMA publishes its terminology sheet and its guidance on modifying doors publicly, and the International Door Association is the trade body for installers and maintains broader professional resources. Beyond that, ask your installer for the manufacturer's spec sheet for the exact door and pass door option being quoted.

Conclusion

The walk-through door question usually has a simpler answer than homeowners expect. If your garage has an exterior wall you can use, a properly framed and sealed side entry door will cost less, keep the garage warmer, leave your garage door system untouched and give you a clean opening with no threshold to step over. Reserve the pass door for the situations where there is genuinely no wall to work with, and when you do specify one, order it from the factory as part of a new door with the correct spring package and a working interlock.

If you are weighing the two options for a London-area home, we are happy to look at your garage, tell you honestly which one fits, and quote a new door with or without the pass door option. Call 519-619-7901, reach us through our contact page, or start pricing a door on our price estimator. AA Advantage Doors has been installing and servicing doors in London and the surrounding area since 2009, and our BBB profile has the record.