60 Fenton St. Ste 4, Livermore, California, USA 94550 Telephone 925.443.3101 Fax 925.443.3638 admin@seniorsolutionsinc.com Legal Services Estate planning essentials should include: A valid and current will. Durable power of attorney. A Living will. Tax planning and preparation. A letter of introduction. While most people recognize the value of having a will, the latter three estate documents listed above may be less familiar. These documents can help ensure peace of mind for both you and your heirs.