Parking Requirement Calculator
Experience how Turkey's tiered parking ratios play out with your own unit mix, and see a rough layout diagram based on the parking angle you choose.
Parking rows arranged on both sides of the drive aisle running alongside the building, based on the selected angle
parking spaces
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Let's discuss this estimate for your projectSource: Turkey's national Parking Regulation (Otopark Yönetmeliği), as amended on 31 March 2021, which sets tiered minimum parking ratios based on residential unit size; each size class's parking requirement is calculated separately and then summed. This is a Turkey-specific national regulation, not a universal standard. Metropolitan municipalities (including Istanbul) may apply their own, stricter or different parking regulations — this figure is not a commitment. Space and aisle dimensions by angle are approximate indicators based on Neufert and common parking design guides. MEEZ Mimarlık confirms your exact parking requirement with your local municipality during the permitting process.
How is parking requirement calculated?
In Turkey, the number of parking spaces required for a residential project isn't tiered by the number of units — contrary to what most people assume — but by their size. This tiered table, introduced by the March 31, 2021 amendment to Turkey's national Parking Regulation (Otopark Yönetmeliği), divides the net floor area of each independent unit (daire) into four size classes and applies a different ratio to each.
The tool above lets you enter your own unit distribution across these four classes and see your total rough parking requirement, together with a layout diagram based on the parking angle you choose.
The tiered ratios
The regulation's national baseline ratios work as follows: 1 parking space for every 3 units under 80 m²; 1 space for every 2 units between 80-120 m²; 1 space per unit between 120-180 m²; and 2 spaces per unit above 180 m².
A building with mixed unit sizes — say, a project with both 70 m² and 150 m² units — calculates each of these four classes separately, rounds each up, then sums them. Calculating with a single "average unit size" assumption can make the real requirement look either too low or too high, which is why the tool also calculates each class separately.
The most common mistakes
The most common mistake is assuming the national baseline ratio is the only rule that applies everywhere. Metropolitan municipalities — including Istanbul — can apply stricter or different ratios through their own parking regulations; the current parking regulation of the district/municipality where your plot is located is always the primary reference.
The second mistake is treating the parking angle (parallel, 45°, 60°, 90°) as a fixed "most efficient" choice. As the angle increases, the area per space grows, but so does the width of the maneuvering aisle; the plot's depth and the position of the entrance/exit determine which angle actually fits more parking spaces — which is why the diagram above redraws itself as you change the angle.
The third mistake is failing to account for additional regulatory requirements such as accessible parking, visitor parking, and bicycle parking; this tool shows only the base ratio for residential units and does not cover project-specific additional obligations.
Early in the permitting process, MEEZ Mimarlık reviews the current parking regulation of the municipality where your plot is located to clarify your project's real parking obligation — so instead of starting from a rough estimate, you move forward with the right number.
Contact usFrequently Asked Questions
How many parking spaces does a unit need?
The number is tiered not by unit count directly, but by the unit's net floor area: 1 parking space for every 3 units under 80 m², 1 space for every 2 units between 80-120 m², 1 space per unit between 120-180 m², and 2 spaces per unit above 180 m². The tool above calculates each of these four classes separately and sums them.
Is the parking regulation different in Istanbul or other metropolitan cities?
Yes, it can be. The ratios in the tool are the national baseline ratios of Turkey's Parking Regulation; metropolitan municipalities can apply stricter or different ratios through their own parking regulations. The current parking regulation of the district/municipality where your plot is located is always the primary reference.
How is parking calculated for a building with mixed unit sizes (both small and large units)?
Each size class is calculated separately, rounded up, and then summed. Calculating with a single "average unit size" assumption can make the real requirement look either too low or too high, which is why the tool calculates the classes separately as well.
Does this tool also account for accessible or visitor parking?
No. The tool shows only the base ratio for residential units; additional regulatory requirements such as accessible parking, visitor parking, and bicycle parking are project-specific and are not included in this calculation.