What is the difference between Occupancy and Frequency?

In the world of Estate Planning, building management and workplace optimisation, the terms Occupancy and Frequency are regularly used. Although they are closely related, they describe fundamentally different aspects of space usage. Understanding this distinction helps organisations make better decisions regarding efficiency, space layout and user comfort.

Frequency

Frequency describes how often a space is used over a certain period. This is not about the number of people in the space, but about the time usage of the space itself.

The corresponding term occupancy rate is usually expressed as a percentage. This indicates what percentage of the time a space is actually in use. For example:

A meeting room with an occupancy rate of 80% means it is occupied 80% of the time — regardless of whether there are 2 or 8 people in it.

Occupancy

Occupancy, on the other hand, provides insight into the number of people present in a space at any given time. This therefore says something about the actual occupancy of the available workstations or seats.

The corresponding occupancy rate is calculated by dividing the number of people in a space by the number of available seats. This is also expressed as a percentage.

For example, as seen in the infographic below: A meeting room with 8 chairs has 4 chairs occupied at a given moment. The occupancy rate is then 4/8 = 50%.

In short:

Value for Estate Planning & Facility Management

Insight into frequency and occupancy offers organisations concrete benefits:

• Efficiency & cost savings: by identifying underutilisation, you can optimise spaces and reduce energy and maintenance costs TU Delft Research Portal+1.

• Healthier & more sustainable buildings: close off unused spaces, adjust installations based on actual occupancy—good for the environment and comfort relogix.com.

• Improved user experience: insight helps in designing spaces that truly align with working behaviour, such as more quiet workstations or breakout areas CapellaHubstar.

• Strategic planning: occupancy data enables well-founded choices, such as subleasing or reconfiguring the office floor Hubstar.

How do you measure Occupancy and occupancy rate?

There are multiple ways to gain insight into how a building and the available spaces are actually being used. Below is an overview of the five most commonly applied methods to measure occupancy and frequency—each with its own pros and cons.

1. Manual counting

• Advantage: Easy to start, no technology or investment required.

• Disadvantage: Low accuracy, labour-intensive and only snapshots. Not suitable for continuous monitoring.

• Application: Mainly useful for small spaces or short-duration observations.

2. Wi-Fi / BLE tracking

• Advantage: Makes smart use of existing network infrastructure such as Wi-Fi routers or BLE beacons. Scalable, affordable and quick to implement.

• Disadvantage: Dependent on personal devices. One person can carry multiple devices, leading to inaccuracy.
  ➤ Please note: Modern AI and machine learning technologies can recognise the difference between people and devices, making this method significantly more reliable.

3. Sensors (Motion, PIR, IR, Headcount)

• Advantage: Real-time detection, high accuracy and completely privacy-friendly because no video recordings are used.

• Disadvantage: Requires investment in installation, maintenance and calibration. Sometimes dependent on battery replacement or mains power.

4. TOF sensors (Time-of-Flight)

• Advantage: Very high accuracy in counting people, without using cameras. Ideal for privacy-sensitive environments.

• Disadvantage: Only recognises how many people are in a space, but not who or what behaviour is exhibited.

5. Digital Methods

• Think of desk booking systems, meeting room planning and digital visitor registration.

• Advantage: Valuable data without extra hardware. Easy to combine with other tools.

• Disadvantage: Only effective if employees consistently use and register in the systems.

Comparison Table: Pros and Cons per Measurement Method

Securing Data and Organisational Prerequisites

Measuring occupancy and frequency provides valuable insights—but without proper structural integration of data and internal strategies, it remains limited to isolated measurements without sustainable impact. Organisations must therefore think carefully about the following prerequisites:

• Data ownership
  Ensure that your organisation always retains ownership of the collected data. Avoid vendor lock-in and opt for open and transparent systems that allow integration with existing IT structures.

• Analytics & Data Science capacity
  Insight without interpretation is worthless. Build internal knowledge by involving analytics specialists and data scientists in analysing occupancy data. With this, you translate data into dashboards, trend analyses and action-oriented KPIs.

• Future-proof with AI
  New AI applications such as heatmaps, predictions of space usage and automatic space offering can add enormous value. (Also check out our blog on AI & building management for more on this.)

• UX & awareness
  The user experience of dashboards and reports is crucial. When information is presented in an understandable and visually appealing way, it stimulates conscious behaviour and organisational change.

Conclusion: From Measuring to Improving

Measuring occupancy and frequency is not an end in itself, but a means to make workspaces smarter, healthier and more sustainable. By investing in measurement solutions, data ownership and internal data expertise, you prepare your organisation for the future.

✅ Do you want to know more?

Check out our other blogs or contact our team. We are happy to think along with you about the best solution for your organisation.