1 Double Or 2 Single Garage Doors A 6 Point Checklist

It is one of the first big decisions when you build or renovate: one double garage door, or two single doors? Both look great and both work well, so the right choice depends on your budget, your block, and how you actually use the garage. To keep it simple, we have broken the decision into a straightforward six point checklist, taking your budget into account along the way.

We fit and repair both double garage doors and single garage doors right across Perth, so we see what works. Whether you drive two cars, a truck, or need to carry a boat and trailer, it pays to plan around how you use the space, and this checklist points you to the better choice.

Point 1: Compare The Cost

Cost is usually the deciding factor. As a rule, one double door is cheaper to buy and install than two separate single doors. Two single garage doors, effectively two garage doors, typically cost 40 to 70 percent more, partly because they need two openers rather than one opener, and installation is higher. That cost difference matters, so a quick price comparison for your exact door opening is worth doing. Two of everything can also mean extra costs down the track for repairs. Of course, cost is only part of the story, but for a tight budget one double garage door is often the value pick.

Remember to budget for two openers, two sets of remotes, and two lots of servicing over the years if you choose singles.

Point 2: Check Your Space And Width

Measure the opening before anything else. A double garage door usually spans 4800 to 5500mm and needs enough space, ideally a garage at least 6m wide, plus a solid wall above for support. Two single doors need more width and a bit more space overall because of the post in the middle, though each single garage suits a narrower bay. A double door also frees up extra space inside with no central post, while two singles each run on their own tracks. It is a good idea to measure the door opening twice, and to leave room on the floor and walls for storage, shelving or mirrors.

Point 3: Think About Structure And Wind Rating

Structure is where Perth conditions come in. One double door creates a larger unsupported span, so it needs a substantial lintel above the opening. Two single doors allow a central structural pier or post, which spreads the load and can be easier to retrofit into an existing house. Some older garages still use a one piece tilt door, but most new doors are sectional. A double also presents a larger wind load surface, and in high wind coastal areas two singles can be the better choice to meet the NCC wind rating rules. We always check this before quoting.

Point 4: Weigh Up Design And Street Appeal

Both looks are popular. A single wide double door gives a clean, modern exterior that suits new builds, whether you choose a sectional or a roller door. Two single doors create a symmetrical look with a visual break in the middle, which complements heritage and character homes. Modern sectional doors come in both formats and are widely available on the market in steel, wood or aluminium. Think about your home’s style and street frontage, and note that some estates have community design guidelines to consider. A double sectional door reads bold and seamless, while two doors can feel more traditional.

Point 5: Consider Everyday Practicality

This is the part people forget. With two single doors you can open one side, using one door and leaving the other door closed, which is handy for security and keeps the house cooler. Families with two drivers often love taking one car out without opening the whole garage to the street. If one opener fails, the other still works. A single double door makes parking two cars easier because there is no central post to steer around, so you can pull straight in, and it is better for large vehicles like a boat, a caravan, or a truck. Weigh up these practical aspects of how you come and go, including space to carry gear through.

Point 6: Factor In Security And Energy Efficiency

Finally, weigh security and comfort. Two single doors give independent access and dual locking, so each door is a separate barrier that can deter intruders, and you can add an auto lock to each. A double door is one large opening with a single point of entry, which is simpler but exposes the entire garage and a larger volume of air whenever it opens. With an attached garage in a hot climate, opening just one of two singles can reduce cooling costs. If security is your priority, two independent doors and locks are hard to beat. It comes down to your specific needs.

Frequently Asked Questions

The questions we hear most from Perth homeowners weighing up their options.

Is A Double Garage Door Cheaper Than Two Single Doors?

Usually, yes. One double garage door needs one opener and less hardware, so it costs less to buy and install than two single garage doors, which often run 40 to 70 percent more overall.

What Is The Standard Double Garage Door Size In Australia?

A double door commonly spans 4800 to 5500mm wide, and in Perth most sit around 5.2 to 5.5 metres. Standard sizes exist for both, but we always measure your door opening to be sure.

Are Two Single Doors Better In High Wind Areas?

Often they are. A central post between two single doors reduces the unsupported span and wind load, which can make two singles the better choice in exposed coastal suburbs under the NCC.

Can I Automate Just One Of Two Single Doors?

Yes. Each single door runs on its own opener, so you can automate one door now and add control to the other door later. That flexibility is one advantage two singles have over one double door.

Still Not Sure? Slide & Glide Can Help You Choose

So, one double or two singles? A double garage door wins on cost, easy parking and a clean modern look, while two single garage doors win on flexibility, independent access, and wind performance in exposed spots. There is no universal winner, only the door that fits your home, your block and your daily routine. Run through the six points, measure your space, and the right choice usually becomes clear.

If you would like a hand, we are happy to measure up and talk it through, with no pressure and no need to wait long for an answer. With more than 12 years fitting garage doors in Perth and full Australian Garage Door Association membership, our team will match the door to your block, your budget and your vehicles. Call Slide & Glide Garage Door Repairs on 0489 266 468, or email info@slideandglide.com.au, for honest advice and a free quote from Ellenbrook to Fremantle. You will find us at Unit 3A/8 Hasler Road, Osborne Park WA 6017, and we will get you the right door first time.