| Joab Mershon House | |
| Location: | 507 W. 5th St., Vermont, Illinois |
| Coordinates: | 40.2933°N -90.4331°W |
| Architecture: | Greek Revival, Italianate, four-over-four |
| Added: | November 7, 1996 |
| Area: | less than one acre |
| Refnum: | 96001294 |
The Joab Mershon House is a historic house located at 507 West 5th Street in Vermont, Illinois. Joab Mershon, a local pork packer and banker, had the house built for his family in 1859. The house has an Italianate design with Greek Revival elements; at the time of its construction, the former style was emerging in popularity while the latter was declining, and the house represents a transitional work between the two styles. The Italianate influence is seen most prominently in the hip roof, which features a bracketed cornice and a cupola with matching brackets. Key Greek Revival elements include the dentillation on the entrance and cupola and the ornamental cast iron lintels. The house's interior has a four-over-four plan, which features four rooms on each floor and a central hallway.[1]
The house was added to the National Register of Historic Places on November 7, 1996.