How to Allocate Company Parking Spaces: Methods, Criteria and Sizing

Parking space allocation is the method that determines who can park, where and when. There are four main approaches: assigned spaces, first come first served, rotation, and booking with dynamic allocation. With hybrid work, only the last one aligns the number of spaces with the actual presence of employees rather than with headcount. It is also the one that frees up the most capacity without building a single extra space.

Parking space allocation: why the method matters more than the number of spaces

An underground parking space costs between €40,000 and €60,000 to build. Around 60% of European commuters drive to work. Parking is therefore both an expensive asset and a service that most employees expect.

Yet most companies still manage it with rules designed for an office occupied five days a week. With an on-site attendance rate of 50 to 70%, an assigned space stands empty one or two days a week, before counting holidays, business trips and sick leave. The result: a car park that looks full when it is not, employees parking in the street, and management considering renting extra spaces.

The real question is not "how many spaces?" but "how should they be distributed?".

The 4 parking space allocation methods

1. Assigned spaces

Each space is allocated to one person, usually based on seniority, role or history.

• Advantages: easy to understand, no day-to-day management.
• Limits: empty spaces whenever the holder is away, a sense of unfairness among those without one, no visibility on actual use.

2. First come, first served

Spaces are open to all eligible users, with no assignment or booking.

• Advantages: no space stays empty as long as there is demand.
• Limits: a race for spaces from 8 am, no visibility for employees before they leave home, a penalty for staggered hours and for parents doing the school run.

3. Rotation or random draw

Spaces are redistributed periodically, weekly or monthly, by rotation or by lottery.

• Advantages: perceived as fair, it spreads access across all applicants.
• Limits: rigid when schedules change, heavy to run manually, and it does not solve empty spaces during absences.

4. Booking with dynamic allocation

Employees book a space for the days they come in. Spaces are distributed according to rules set in advance: priorities, quotas, booking duration, release in case of absence.

• Advantages: an occupied space means an employee on site, visibility the day before, rules applied automatically and identically for everyone.
• Limits: requires a tool and clear rules from the start.

In practice, organisations often combine approaches: a few assigned spaces for specific needs, and everything else as bookable flex parking.

Which criteria make allocation fair?

Fairness is what makes or breaks an allocation project. A rule perceived as arbitrary creates more tension than the shortage itself. The most common criteria are:

• priority needs: employees with reduced mobility, pregnancy, medical constraints, in line with accessibility obligations;
• atypical hours: shift teams, early arrivals or late departures, when public transport is not an option;
• carpooling: priority or the best spaces for carpool crews, a simple lever to reduce the number of vehicles;
• public transport access: distance or travel time without a car;
• job constraints: field sales, on-call duty, on-site interventions;
• vehicle type: electric vehicles directed to spaces with charging points, with rotation so a charger is not blocked all day.

A purely hierarchical criterion, one space per manager, is the most contested. It can remain for a few roles, but it works better when it is owned and limited rather than the default rule. These criteria then need to be formalised in a parking policy that everyone knows.

How many spaces for how many employees?

Sizing is based on space sharing: since eligible users are never all present at the same time, one space can serve several people over the week.

Take an example: 200 employees are entitled to parking and come in three days out of five on average. Average daily demand is around 120 vehicles. With assigned spaces, 200 spaces are needed. With dynamic allocation, the target is around 120 spaces, plus a margin for peak days.

Those peak days are the real point of attention. In many companies, attendance concentrates from Tuesday to Thursday, while Monday and Friday stay quiet. Good sizing is not based on the average but on demand on the busiest days. It is complemented by rules that smooth attendance: quotas per team, recommended office days, priority for early bookings.

This calculation is impossible without data. Before redefining the rules, you need to measure actual occupancy day by day, parking duration and the rate of unused bookings. Parking analytics provide that baseline.

The 3 pitfalls of dynamic allocation

No-show bookings

An employee books "just in case" and does not come. Their space stays blocked while others are waiting. The fix is a release rule: check-in on arrival, or the space returns to the pool if the vehicle has not entered by a set time.

Spaces that never rotate

Vehicles left for weeks, assigned spaces kept "out of habit", access rights of former employees never revoked: these spaces drop out of allocation without anyone noticing. Only tracking parking duration makes them visible.

Overly complex rules

Ten weighted criteria and case-by-case exceptions make the rule unreadable and undermine its legitimacy. Three or four clear criteria applied automatically are worth more than a perfect system nobody understands.

How Izix automates parking space allocation

Izix is parking management software that connects to existing infrastructure (barriers, cameras, access control) and automatically applies the allocation rules defined by the company.

• Mobile booking: each employee books or releases a space from the app, based on their office days.
• Configurable rules: priorities, quotas, maximum durations, spaces dedicated to carpooling or electric vehicles.
• Badge-free access: licence plate recognition links each entry to a user and a booking.
• Charging: charge point management brings EV spaces into the same allocation logic.
• Monitoring: actual occupancy, peak days and usage rate by zone, to adjust the rules over time.

Across equipped car parks, Izix measures a 2.7x capacity gain compared with static allocation. The platform is used by more than 1,000 companies, across more than 1,200 car parks in 11 countries.

Key takeaways

Good parking space allocation is not about finding the perfect method, but about aligning the number of spaces in use with the actual presence of employees. That requires simple, fair rules, sizing based on peak days, and a tool that applies the rules without manual intervention. Companies that get there often discover that their parking problem was never a lack of spaces, but a lack of method.