A Pennsylvania Petition to Modify Custody is a legal document that is filed with the court when a parent wishes to modify the existing custody arrangement for their child. The petition must be signed by both parents and should include information about why the modification is being requested, as well as any changes that the parent wishes to make. There are two types of Pennsylvania Petition to Modify Custody: Temporary and Permanent. A Temporary Petition to Modify Custody is usually filed when a parent needs a change in the custody arrangement for a short period of time, such as when one parent needs to leave town for a brief period. A Permanent Petition to Modify Custody is filed when a parent wishes to change the custody arrangement on a long-term basis, such as when a parent wants to change the custodial parent or modify the visitation schedule. Both Temporary and Permanent Petitions to Modify Custody will require the parent to show the court that there has been a change in circumstances since the last custody order, and that the modification is in the best interests of the child. The parent must also provide evidence to support their petition.