Your tenancy agreement comes with the Tenancy regulations, which includes the General Terms and Conditions that apply to the tenancy agreement. The date on your tenancy agreement determines which version (date) of the tenancy regulations applies.
Did you rent with SLS Wonen in Leiden before 1 January 2014? Then the tenancy regulations of SLS Wonen apply to you.
Did you rent with Vestia in The Hague before 1 October 2013? You can find your tenancy regulations on the Vestia website.
Accommodate has different tenancy regulations. Further additional conditions with your educational institution apply.