Re: Neighbours tree roots blocking our sewer › Forums › Common Property › Neighbours tree roots blocking our sewer › Current Page 29/04/2018 at 11:19 pm #20115 Lady PenelopeFlatchatter BONNIE L – You may get approval to remove a tree that is protected either by a TPO or LEP when there are problems with the roots blocking the plumbing or other pipes on the property or neighbouring properties.