A double carport is an obvious choice for your property if you have a larger family home with a couple of cars.
A good quality double carport looks great in front of any property and nowadays you can get carports to suit any type of house design.
Double carports vary in size from 5.5m x 5.5m up to 6m x 6m as far as the standard pre-engineered sized concerned.
You could off course get any sizes that your particular situation requires done as a customs size. Custom items however generally cost more than pre-engineered designed.
If you are not concerned about the design of the building but you are looking for a cost effective option, the cheapest set up is a skillion roof (the roof type that is higher at the front and slopes towards the back of the building) double carport. Generally speaking they are made out of either Zincalume or Colorbond (they are both trademarks of BlueScope Steel). Out of those two the Zincalume is the cheaper option.
If you after a nicer set up you would most likely want to check some gable roof carports out. They can be simple gable, Dutch gable or hip roof. These buildings are generally designed for the 6m x 6m size when it comes to double carports.
Any of the above types can be free standing or one or more sides of the building could be attached to your home. The pre-engineered carports are designed as free standing and if you are playing with the thought of modifying one of those (by attaching it to your house or something similar), please keep in mind that such a modifications normally void your warranty.
Carports are generally attached to your driveway or concrete slab with anchors (brackets and dyna bolts) not with the posts being concreted into the ground.
If you don’t have a slab or concrete driveway, you can use footings as well for most of the double carports.