Tim Hennessey has served the community as a legislator, a trial attorney with the Public Defender’s office for 20 years, a township solicitor for 25 years. A lifelong resident of Chester County, he has represented the 26th District since 1993.

House District 26 spans northern and western Chester County, from Spring City to Elverson to Coatesville. The 14 municipalities are Spring City Borough, East Vincent, East Coventry, North Coventry, Warwick, East and West Nantmeal townships and Elverson Borough, Wallace and Honey Brook townships and Honey Brook Borough, West Caln and Valley Townships and Coatesville, a 3rd class city.

In the Pennsylvania House of Representatives, Hennessey is the Republican Chair of Aging and Older Adult Services, while also serving on the Local Government Committee. As Chairman of Aging, he has introduced bills to protect the Lottery's revenues from being used by the current administration to pay for bureaucracies of the State Department of Aging. He's also introduced bills to protect homeowners who pre-pay for home heating oil and natural gas, to extend  favorable tax treatment for tuition pre-payment plans and to protect homeowner's claims for homestead tax treatment, among others.

Previously Hennessey authored Pa's Targeted Communities Revitalization Act (Weed and Seed), voting rights provisions, a measure to attack urban blight and restore abandoned buildings and a law to facilitate transfer of property from municipalities to non-profit community development entities.

In prior terms, Hennessey was active on the House Judiciary, Urban Affairs, Consumer Affairs and Insurance committees. His current chairmanship of Aging limits him to just the committee on Local Government.

Prior to his service in the Pennsylvania House of Representatives, Hennessey served as  Chairman of the Student Exchange and Group Study Exchange programs for the Pottstown Rotary Club, as President of Birthright of Pottstown (offering alternatives to abortion and ongoing support after childbirth) and as President of Alternatives, a shelter home for abused and neglected children.

Tim Hennessey is a 1965 graduate of St. Pius X High School in Pottstown, St. Josephs University (1969) and Villanova University School of Law 1972. He resides in North Coventry Township with Carol, his wife of 35 years. They have three children; Katherine, Timothy and Elizabeth.