Mast Castle
Also known as: Mast Mansion; Ohio Knights of Pythias Home for the Aged
No coordinates published for this listing.
Why it's listed
No readable nomination text is available for this listing yet (nominations after 2012 are held by the National Park Service rather than the National Archives). The facts below come from the National Park Service database.
Key facts
| Address | 901 West High Street, Springfield |
|---|---|
| County | Clark County |
| Listed | May 1, 2026 |
| Reference number | 100012954 |
| Resource type | Building |
| Areas of significance | Architecture |
| Level of significance | Local |
| Acreage | 6.05 |
What listing means for this property
National Register listing is honorary: it recognises significance and does not restrict what a private owner may do without federal money or permits. It unlocks the 20% federal rehabilitation tax credit for income-producing buildings, state credits in many states, and Section 106 review when federal agencies are involved. See what listing means in practice.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 100012954.
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.