Once your ORG is active and you are working with your own data, you can delete all of the Propertybase demo data with just a few clicks!

Open the Developer Console:

In the "Debug" menu select "Open Execute Anonymous Windows":

Copy this code here and paste it to the new text box. Then press "Execute":

Organization org = [SELECT CreatedDate FROM Organization];
Datetime creationDateMin = org.CreatedDate;
Datetime creationDateMax = org.CreatedDate.addMinutes(2);

List<Contact> trialContacts = [Select id from contact where CreatedDate >= :creationDateMin AND CreatedDate < :creationDateMax];
delete [Select Id from pba__ActionPlan__c where pba__Contact__c in :trialContacts];
delete [Select Id from pba__DripCampaign__c where pba__Contact__c in :trialContacts];

for (SObjectType t : Schema.getGlobalDescribe().values()) {
String objName = t.getDescribe().getName();
  if (t == pba__Request__c.SObjectType
    || t == pba__Listing__c.SObjectType
    || t == pba__Property__c.SObjectType
    || t == pba__Offer__c.SObjectType
    || t == pba__Closing__c.SObjectType
    || t == Contact.SObjectType
    || t == Account.SObjectType
    || t == pba__Transaction__c.SObjectType
  ) {
    List<SObject> sObjs = Database.query('Select Id from ' + objName + ' Where CreatedDate >= :creationDateMin AND CreatedDate < :creationDateMax');
    delete sObjs;
  }
}

You can find the deleted records in the recycle bin.