Square Four is specialized in providing property management services for parties that either own, have a share in or carry responsibility for real estate. Square Four offers both commercial and technical, as well as financial and administrative services. These services can be provided separately and will be applied to the specific needs and wishes of our clients.
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Square Four Questions
The Square Four annual revenue was $5.2 million in 2026.
Ton de Graaf is the Partner of Square Four.
54 people are employed at Square Four.
Square Four is based in Alkmaar, North Holland.
The NAICS codes for Square Four are [5239, 523, 52, 523991, 52399].
The SIC codes for Square Four are [673, 67].
Top Square Four Employees
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Ton de Graaf
Partner at Square Four
Netherlands21 -
Elwin Versluis
Finance Director at Square Four
Abcoude, UT, NL2 -
Theo Kreeftmeijer
COO at Square Four
Amsterdam, NH, NL15 -
Reinier Tromp
CEO at Square Four
Amsterdam, NH, NL25 -
Joris Knoppert
Technical Property Manager at Square Four
Amsterdam, NH, NL2 -
Maartje van Beek
Head of Technical Management at Square Four
Ouderkerk aan de Amstel, NH, NL1 -
Frank van de Grift
Technical Manager at Square Four
Medemblik, NH, NL2 -
Daniëlle Bakker
Commercial Director at Square Four
Alkmaar, NH, NL1 -
Eric Bakker
Partner at Square Four
Netherlands -
Cees Rvgme
Partner at Square Four
Netherlands11
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