Sizing a triple or four-bay carport
Count the widest thing you park, not just the cars. A 9m × 6m triple takes three sedans, or two cars and a single-axle trailer; a 12m × 6m four-bay takes four vehicles, or a boat-and-trailer plus two cars. On a plot the span often needs a taller 2.7–3.0 m beam for a bakkie with a canopy or a horsebox, and a mid-post layout the boat can reverse between.
| Structure | Size | Typical use | Price band |
|---|---|---|---|
| Triple | 9m × 6m | 3 cars, or 2 + trailer | R19,000 – R38,000 |
| Four-bay | 12m × 6m | 4 vehicles / boat + cars | R27,000 – R52,000 |
Wide spans and the Highveld
A wide roof catches more hail, wind and sun, so the engineering matters more on a triple than on a single. KB Carports uses heavier galvanised steel sections and full-length IBR runs on these spans, with the roof pitched to shed Highveld storm water fast. The gauge-and-pitch reasoning is in carports and Highveld hail.
Where triples get built
Most triple and four-bay work is on the plot belts — the West Rand, the Midrand and Kyalami holdings, and the southern smallholdings — where stands have the room. Price the exact span on the carport prices in Johannesburg page, or start with a double carport if the third bay can wait.
Common questions
How much is a triple carport in Johannesburg?
A triple carport in Johannesburg costs R19,000–R38,000 supplied and installed at 9m × 6m in galvanised steel with IBR roofing. A four-bay (12m × 6m) runs R27,000–R52,000.
What size carport covers a boat and trailer?
A four-bay 12m × 6m carport, or a triple with an extended bay, covers a boat-and-trailer alongside two cars. Specify a 2.7–3.0 m beam height so a boat on a trailer or a bakkie with a canopy clears the roof.
Can you build a large carport on a plot or smallholding?
Yes. Plots and smallholdings on the West Rand and around Midrand are where most triple and four-bay carports go, using heavier steel sections and taller beams for trailers, boats and bakkies.