A Guide To Garage Door Sizes In Australia

An ill fitting garage door leaves gaps that invite dust in summer, rain pooling along the threshold in winter, and the quiet frustration of knowing something is not right every time you pull into the driveway.

We have measured and installed thousands of garage doors across Perth, and the difference between a proper fit and a rough guess shows up the moment the door closes and daylight bleeds through the edges.

This guide covers standard garage door sizes for single and double garages, the dimensions for different door types, and how to measure your garage opening for a precise fit.

Standard Single Garage Door Sizes

A standard single garage door in Australia measures 2400mm wide by 2100mm high. This suits most average sized car models and provides enough room to open doors comfortably once parked. If you drive a taller vehicle like a 4WD or a van with roof racks, the standard height may not clear the roof line based on your vehicle dimensions, and you will need to consider extra height options.

Single garage doors are available in widths from 2100mm up to 3000mm. Steel Line and B&D both offer single doors in 2400mm, 2700mm, and 3000mm widths as standard sizes. The wider options give you extra space on either side of the vehicle for easier entry and storage along the walls.

Isaac from our team installed a 3000mm wide single door for a homeowner in Karrinyup who had been scraping his side mirrors on the garage door frame for two years. He had taken to folding the mirrors in before pulling in every evening, a small ritual he never should have needed. The wider door ended that on the first day.

Standard Double Garage Door Sizes

Double garage door sizes in Australia typically start at 4800mm wide by 2100mm high. This accommodates two cars parked side by side with clearance to open both driver doors without contact. Some builders opt for two single doors separated by a central pillar, but a single large double door creates a wider uninterrupted opening and costs less to automate with one motor.

If your double garage also serves as a workshop or you need overhead storage, a taller door at 2400mm or 2700mm high gives you the available headroom to fit racking or ceiling mounted platforms without blocking the garage door opening.

We regularly install double doors on new builds across Ellenbrook and Byford where standard dimensions align with the builder’s specifications. On character homes in Nedlands and Claremont, the garage opening is often a non-standard width built to suit the original architecture. Ro from our team measured a 1960s Claremont property where the opening was 4650mm, just 150mm shy of standard. That small discrepancy would have left visible gaps on both sides with an off-the-shelf door, so we ordered to the exact width.

Roller Garage Doors And Size Considerations

Roller garage doors suit garages where headroom space is limited. The rolling mechanism coils the door into a compact barrel above the opening, so you do not lose ceiling space to horizontal tracks. This makes roller doors the preferred choice when you want to maximise overhead storage or when the room behind the door is tight.

Roller door sizes follow the same standard dimensions as other door types, but the side room requirements are smaller, typically 100mm to 150mm of clear space on each side for the guide tracks. The door needs enough room above the opening for the barrel to sit without hitting the ceiling.

For a single garage, a roller garage door at 2400mm wide by 2100mm high is the most common size. For a double garage, 4800mm wide is standard. Roller doors can be manufactured to custom widths and heights, so if your garage opening does not match standard sizes, we order to your exact specifications.

Sectional Garage Door And Tilt Door Sizes

A sectional garage door requires more headroom than a roller door because the panels travel along tracks mounted to the ceiling. You need a minimum of 300mm of headroom space above the garage door opening for a standard installation, and more if the door includes a motor. If your ceiling height is limited, a low headroom kit can reduce this, but it is something to confirm before choosing your door type.

Sectional doors from Steel Line and B&D come in standard sizes from 2400mm wide up to 5400mm wide. The angled bottom rail on most sectional doors provides a tight seal against the floor, which is why they are popular on homes where weather sealing matters.

Tilt garage doors use a simpler mechanism where the single panel tilts outward and slides up into the garage. Tilt doors need enough room in front of the garage for the panel to swing out, so they are not ideal for short driveways. A tilt garage door suits single garage doors and some double doors, though sectional doors have largely replaced tilt doors on new installations because of smoother operation and better sealing.

How To Measure Your Garage Opening

Getting the right size garage door starts with four measurements of your garage opening. First, measure the width between the inside edges of the garage door frame at the widest point. Second, measure the height from the floor to the lowest point of the header beam. Third, check the side room on both sides, as guide tracks need minimum clearance. Fourth, measure the available headroom from the top of the opening to the ceiling, which determines whether a roller door, sectional garage door, or tilt door will physically fit.

If the floor is uneven, measure the height on both the left and right sides. We see this regularly on older Perth properties where the slab has settled over the decades, creating a visible gap on one side when the door closes. A proper fit accounts for this and ensures the door seals flush against the concrete.

Garage Door Sizes Frequently Asked Questions

Here are the questions we get asked most about garage door sizes.

What Is The Standard Garage Door Height In Australia?

The standard garage door height is 2100mm high for both single and double garages. Taller options at 2400mm and 2700mm are available for larger vehicle clearance or overhead storage.

Can You Get A Garage Door In A Custom Size?

We can. If your garage opening does not match standard sizes, we supply and install custom sized doors from Steel Line, B&D, Gliderol, and Centurion. We measure on site to ensure a precise fit with no compromise on smooth operation.

How Wide Is A Standard Double Garage Door?

A standard double garage door is 4800mm wide. Wider options are available for garages that house a larger vehicle, boats, or caravans. We supply double doors up to 5400mm wide for tailored solutions.

Should We Choose Two Single Doors Or One Double Door?

Two single doors give independent access to each parking space and can suit narrower garage openings with a central pillar. A single double door provides a wider opening, looks cleaner from the street, and is simpler to automate with one motor.

Get The Right Garage Door Size For Your Home

Whether you need a new garage door for a single garage, a replacement for a double garage, or a custom door for a non-standard opening, we supply and install all sorts of garage doors in Perth.

Getting the right size garage door eliminates fitment problems, tightens your weather sealing, and gives you a door that operates properly from day one. Contact us on 0489 081 055 or request a quote online and we will measure your garage opening, recommend the right door, and handle the installation.