William L. Gregg House | |
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| Location | 117 S. Linden Ave Westmont, DuPage County, Illinois |
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| Coordinates | 41°47′35″N 87°58′24″W / 41.79306°N 87.97333°W |
| Area | less than one acre |
| Built | 1872 |
| Architectural style | Victorian (Second Empire) |
| NRHP reference No. | 80004526[1] |
| Added to NRHP | October 3, 1980 |
The William L. Gregg House is a historic Victorian building in the Second Empire style located in Westmont, Illinois.