Standard garage door sizes in Australia refer to the typical height and width measurements used across most residential properties. A single garage door usually sits at 2100mm high and 2400mm wide, while a double door typically measures 2100mm high and 4800mm wide. These dimensions have become the norm because they fit most vehicles comfortably and work with standard garage construction.
This guide walks you through everything you need to know about Australian garage door sizing. You'll learn why these measurements matter when buying or replacing a door, how to measure your garage opening correctly, and when you might need a custom size instead of a standard one. Whether you're building a new home, renovating your garage, or simply replacing an old door, understanding these dimensions will save you time and money.
Why standard garage door sizes matter
Standard garage door sizes in Australia determine whether you can buy ready-made products or need custom manufacturing. Even though these sizes are common there are still many variation of colour and finish so door manufacturers do not stock standard options but some local high volume resellers may have a few commonnsize and colour roller doors in stock.
Your vehicle clearance depends entirely on getting the size right. A 2400mm wide opening gives you roughly 250mm of space on each side of an average car, making parking easier and preventing damage to mirrors or panels. Double doors at 4800mm wide accommodate two vehicles with similar clearance.
Installation becomes simpler when your garage matches standard measurements. Builders and installers work faster with common dimensions because they encounter these sizes daily and stock the correct parts and tools.
How to choose the right garage door size
You need to start by measuring your current vehicle dimensions and planning for any future purchases. Standard garage door sizes won't suit every situation, so you must evaluate your specific needs before ordering. Your choice affects daily convenience, property value, and long-term satisfaction.
Consider your vehicle dimensions
Measure your car's width, height, and length before selecting a door size. Add at least 300mm to your vehicle's width for comfortable entry and exit, giving you clearance on both sides. Taller vehicles like SUVs and 4WDs need doors with extra height, particularly if you install roof racks or other accessories.
You should also check your vehicle manufacturer's specifications to account for mirrors and any modifications that add width.
Account for future needs
Think about whether you might buy a larger vehicle or add a second car in coming years. Choosing a slightly bigger door now saves you from costly replacements later. You'll also gain flexibility for storing boats, trailers, or workshop equipment inside your garage.
Consider whether you plan to use your garage for multiple purposes. A workspace or storage area requires different dimensions than a simple car shelter. Building regulations in your area might also influence your options, so check local council requirements before finalising your choice. Spending time on this decision upfront prevents expensive mistakes and ensures your door serves your needs for decades.
Standard garage door sizes in Australia
Standard garage door sizes follow consistent measurements across most residential properties. You'll find that manufacturers produce doors in these dimensions because they suit typical Australian garages and vehicle requirements.
Single garage door dimensions
A single garage door measures 2100mm high and 2400mm wide in most Australian homes. This size accommodates sedans, hatchbacks, and smaller SUVs with adequate clearance. You get roughly 250mm of space on each side of your vehicle when parking, which prevents scrapes and makes entering your garage straightforward.
Some manufacturers offer single doors up to 3000mm high and 3100mm wide for larger vehicles or when you want extra storage space. You might choose these expanded dimensions if you drive a full-size 4WD or need room for side mirrors and attachments.
Double garage door dimensions
Double garage doors typically measure 2100mm high and 4800mm wide, giving you space for two standard vehicles side by side. This width provides adequate clearance between cars and allows you to open doors without hitting adjacent vehicles or walls.
Your double garage can accommodate larger vehicles or mixed uses like storing one car plus workshop equipment or storage units.
You can select either one large double door or two separate single doors for your double garage. Two single doors cost more because you need two motors and separate mechanisms, but they offer flexibility when you only need to open one side. You can even get two roller doors with a removable centre post if you occasionally need a full width opening.
Height variations for different needs
Most Australian garages use the standard 2100mm height, but you can order doors up to 3000mm tall for specific requirements. Taller doors suit properties with high-clearance vehicles like trucks or those storing boats and caravans.
Your ceiling height and available headroom determine which door type works best. Roller doors need 450mm of headroom above the opening, while sectional doors require 350mm plus ceiling space for tracks. Check your garage structure before selecting a height that exceeds standard dimensions.
Measuring your garage for a new door
You need accurate measurements before ordering any door to ensure a proper fit as there are generally no returns available for custom made doors. Measuring your garage opening involves more than just width and height; you must also check headroom, side room, and depth to determine which door type suits your space. These measurements tell manufacturers exactly what you need and help you compare options against standard garage door sizes Australia offers.
Essential measurements you need
Start by measuring the width of your opening at three points: top, middle, and bottom. If the opening isnt perfectly square use a plumb bob to get a sqaure dimension and let the door overlap the opening a little more as required. The tracks must run vertially amd not on an angle. Next, measure the height from floor to header on both left and right sides, again using the smallest number.
Check your headroom by measuring from the top of the opening to the ceiling. Roller doors need at least 450mm here, while sectional doors require 350mm plus ceiling space for tracks. Measure the side room (wall space beside the opening) on both sides, ensuring you have minimum 100mm for single doors or 250mm for double doors.
Your garage depth matters too, particularly for sectional doors that run along the ceiling when open.
Recording and verifying measurements
Write down all measurements immediately and double-check each one before placing your order. Take photos of your garage opening from multiple angles, including any obstructions like lights or storage that might affect installation. Professional installers typically verify measurements during quotes, but accurate preliminary numbers help you shortlist suitable door types.
Planning for non standard and custom sizes
When standard sizes don't fit
Your garage might require custom dimensions if you have an older home with non-standard openings or a property built with unique architectural features. Garages with sloped floors or angled ceilings often need specially manufactured doors with tapered bottom rails or adjusted track systems. You'll also need custom sizing when storing boats, caravans, or commercial vehicles that exceed typical height or width clearances.
Custom doors accommodate garages wider than 5500mm or taller than 3000mm, which standard manufacturing cannot supply.
Getting custom doors manufactured
Order your custom door directly from Australian manufacturers who specialise in made-to-measure products. You'll receive a free on-site measurement from most local suppliers, ensuring accuracy before production begins.
Wrapping up your garage door size choice
Choosing the right garage door starts with understanding standard garage door sizes Australia offers and measuring your opening accurately.
Your next step involves browsing available options and comparing different door types against your measurements. Browse our range of roller doors to find a solution that fits your garage opening, budget, and style preferences. You can also explore sectional doors for modern styling or add a separate personal access door for convenience. Taking action now means you'll enjoy a properly fitted garage door that serves your household for decades.