Top 15 Costly Mistakes

Not clearly reading your lease prior to signing.
All Notices to and from landlord must be in writing.
Not having a detailed move in checklist/photos.
No Move-in Inspection Form at all
You let your friendMaggiestay on your couch for a few weeks while she finds a new apartment.
Not getting renter`s insurance.
Making Alterations and Painting without Prior Approval
Denying the landlord Access to the property.
You set up a business at your address and produce products in the garage
Adding pets without Permission
Not changing A/C Filters
Not Maintaining the Yard or property in general properly.
Not Notifying the Landlord as needed
You install a Satellite TV dish with out permission.
Not having tenant liability Insurance