On December 19th of 1901 a New York State Charter was granted to the Hillview Library Association. The first trustees were Mr. & Mrs. E Luther Hamiliton, Mr. & Mrs. Lawrence Jacobs, Mr. George Yewell, Miss E.D. Brereton, and Mrs. Fred. E Truesdale. With charter obtained, the library trustees acknowledged they had outgrown the original building.

They approached J. Dickinson Hunter, who was able to design the stone arched structure that led to a curved wooden door, which opened to an oak lined great room. In 1906 Mr. Hunter designed and donated the bronze tablet on the front arch. In 1967 a children's room was added onto the back of the library, with built in bookcases, designed by local craftsman Donald Quigan.

In 1997 the great room was renovated, and in 2007 a central heating and air conditioning system was added for much needed patron's comfort. After receiving the Charles R Wood Foundation grant in 2019 Hillview was able to update the heating and cooling system by making it more energy efficient, allowing us to maintain our status as a staple in our community. 

In early 2022, Hillview submitted an application to NY State's Historic Preservation Office that seeks to officially designate the Library building an Historic Structure under the NYS Historic Preservation Act. Hillview's application is currently under review.