| Isaac Onderdonk House | |
| Nrhp Type2: | indcp |
| Nocat: | y |
| Partof: | Road Up Raritan Historic District |
| Partof Refnum: | 97001146 |
| Designated Nrhp Type2: | September 18, 1997 |
| Location: | 685 River Road, Piscataway, New Jersey |
| Coordinates: | 40.5325°N -74.4933°W |
| Added: | October 30, 1973 |
| Refnum: | 73001116 |
| Designated Other1 Name: | New Jersey Register of Historic Places |
| Designated Other1 Abbr: | NJRHP |
| Designated Other1 Link: | New Jersey Register of Historic Places |
| Designated Other1 Date: | September 6, 1973 |
| Designated Other1 Number: | 1917[1] |
| Designated Other1 Num Position: | bottom |
| Designated Other1 Color: |
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The Isaac Onderdonk House, also known as the Walter C. and Julia Meuly House, is a historic house located at 685 River Road in the township of Piscataway in Middlesex County, New Jersey, United States. It was added to the National Register of Historic Places on October 30, 1973, for its significance in architecture.[2] It was listed as a contributing property of the Road Up Raritan Historic District in 1997.[3]
Isaac Onderdonk and his wife Antie Rierson moved here in 1745. Their son Isaac was born in 1756. He married Sarah Smoch, who lived at the nearby Matthias Smock House. The two-story frame house remained in the Ondeerdonk family until 1929.[3]