JWG Header bureau poetsen

Cleaning requires human effort. That is why our employees are our calling card. Not only because of excellent service, but also because of the neat and professional appearance. After all, everyone who works for us has completed extensive internal training. All aspects of the cleaning profession like safety, use of materials and social communication were discussed and trained. This way you will never be faced with any surprises. Our people know exactly what they should and should not do. It goes without saying that we work in accordance with all current and strict ARBO guidelines. High-quality and safe service simply comes first!

Our story

Logo Janssen Wiersma oud3


june 2004

Establishment of Janssen Wiersma Group. (With Boon Bedrijfsdiensten and De Lier Dienstverlening).

JWGroep sleutels deur


march 2010

Deployment of the first caretaker

JWGroep verhuizing


may 2008

Moving to the Henricuskade in The Hague.

JWGroep auto oud logo

On the road

mei 2008

Our fleet has been expanded, we are now even more visible in the The Hague region.

Logo Janssen Wiersma nieuw3

New logo

may 2019

The logo and website are undergoing a restyle.

JWG visitekaart nieuw logo

New corporate identity

may 2019

The corporate identity and communication tools such as business cards have also been updated.

JWGroep cleaning2

Cleaning requires human effort

march 2020

With more than 45 employees, we are expanding our working area to Utrecht.

JWG den haag the roofs artist impression

Cool projects

june 2022

We already have many beautiful projects in our portfolio, including the New Babylon complex and the Zalmhaven Tower. We can now also add The Roofs to this list.

JWG auto belettering nieuw2


march 2024

We now have 35 company cars driving around, more than 75 employees and our working area has been expanded to Zaandam.

JWG laagjestaart 20jaar feest

Janssen Wiersma Groep 20 years!

june 2024

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