Building regulations and standards keep evolving. Green buildings are out, blue buildings are the next big thing. Factor4 supports facility managers in staying compliant. Moreover, Factor4 always strives towards incorporating compliance-related actions into the normal corporate strategy.
We can help you fulfill the compliance or reporting requirements for BREEAM, WELL, mandatory energy audits, circular economy, ISO50001, EN16001, …


We monitor the latest news

We are on top of the latest developments in the building environment related to energy efficiency, indoor comfort, climate change or sustainability at large.

We keep you informed

We support facility managers in gaining a sound insight in the realm of standards and regulations, and propose pragmatic strategies to achieve compliance.

We help you comply… and beyond

We take care of your compliance as efficiently and cost-effectively as possible. Our focus however is the ultimate objective: creating added value for the real estate investor of building user.

We perform the mandatory energy audit in our client’s buildings when needed. We not only provide them with the necessary documents and reports, we also present a plan for the actual implementation of the most profitable measures.

In this way, the cost of this obligation is finally recovered thanks to the energy savings.

Erik Van Agtmaal


Relevant services


We are accredited and licensed to perform energy audits, report on CO2 footprints and we can help you offset your CO2 emissions. Read more

Measuring performance

We measure building performance using different tools, from sensors over audits to comfort surveys. Read more

Design and optimisation

We design and develop energy-related components: from conceptual design over detailed drawings to procurement documents. We take on new designs and optimize existing installations. Read more

Our clients

Office in Belgium
Lange Winkelhaakstraat 26
B-2060 Antwerp
T +32 3 225 23 12
Find out here how to reach us and where to park.
You can leave your bike in a locked area in the building.

VAT 0884 068 589
IBAN: BE38 7380 3377 0772
RPR: Mechelen
Terms and conditions

Contact us