5 Common Mistakes in Concept Parking Layouts (and How to Avoid Them)
A concept parking layout is often produced early in a project, under time pressure, before every detail of a site is locked in. That's exactly when small mistakes creep in — and they tend to surface at the worst possible time, when a layout gets sent back for revision after a council or client review. Here are five that come up often, and how to avoid them.
1. Designing to the wrong standard
Victoria uses its own dimensions, which differs from the national parameters used elsewhere in Australia — generally allocating more width to aisles and less to individual bays. Using the wrong dimensions for a site's location is an easy mistake to make, especially when working across projects in different states, and it's usually not obvious until someone checks the numbers against what actually applies to that location.
Avoid it: confirm which standard actually applies to the site's location before laying anything out, not after.
2. Picking an angle without testing alternatives
It's tempting to default to whatever angle was used on the last project, or whatever looks right at a glance. But bay angle is a genuine trade-off between bay count and aisle width — the "right" choice depends on the specific site, and defaulting to a habit rather than testing options can leave real capacity on the table, or produce a layout that fits on paper but is awkward to actually drive through.
Avoid it: lay the site out at more than one angle before committing, and compare bay counts side by side.
3. Underestimating aisle width needs
Aisle width isn't just a fixed number — it depends on the bay angle and the circulation direction (one-way vs two-way). A width that's correct for a 45° layout won't necessarily be correct if the angle changes to 60° or 90° later in the design process, and it's easy to carry an aisle width over from an earlier iteration without re-checking it against the final angle chosen.
Avoid it: treat aisle width as something that gets re-verified every time the angle or circulation direction changes, not something set once and left alone.
4. Leaving access points and sightlines as an afterthought
Where a car park meets a road matters as much as the layout inside it — sightlines at access points need to let drivers see pedestrians and other vehicles before pulling out. Access points added late in the design process, after the internal layout is already finalised, can end up in positions that don't actually provide adequate sightlines, forcing a rework of bays near the entry.
Avoid it: settle on access point locations early, before finalising the bays around them, not after.
5. Treating the concept layout as "close enough"
A concept-stage layout is meant to test feasibility, not to be pixel-accurate — but "close enough" dimensions at concept stage can create a false sense of confidence about how many spaces a site can actually achieve. If the concept layout overstates bay count even slightly, that gap tends to surface later, once a project is further along and changes are more expensive to make.
Avoid it: use dimensions that are actually correct for the applicable standard, even at concept stage — not rounded approximations that "should be about right."
Where Parking Planner helps
Every one of these mistakes comes from doing something manually that's easy to get slightly wrong under time pressure: picking the right standard, testing multiple angles, keeping aisle widths correct as the layout changes. Parking Planner applies the correct dimensions automatically for the standard and angle you choose, and lets you test different configurations in seconds — so the concept layout you start with is actually accurate, not just close.