A Cheektowaga man faces a prison sentence of up to seven years when he is sentenced Thursday for defrauding an 85-year-old homeowner of about $18,450, according to the Erie County District Attorney’s Office.

Leslie “Les” Ralston, 32, of Brookfield Lane, pleaded guilty earlier this week to third-degree grand larceny before Erie County Judge Kenneth F. Case.

Ralston told the woman that squirrels had damaged her roof and that he would repair the roof, according to District Attorney Frank A. Sedita III. Squirrels had not damaged the roof and Ralston did no repair work.

The crime happened between Dec. 4, 2011 and Jan. 18, 2012.

Sedita noted that Ralston’s older brother, Joseph, is currently imprisoned on a grand larceny conviction for a similar fraudulent home-improvement scheme and his father also was convicted of grand larceny for similar schemes in the 1980s.