Idalia Manor

Listed on the National Register of Historic Places in 1985.

From the record

“Idalia Manor is a historic home located at Mt. It was built about 1845, and consists of a five-bay, stuccoed brick main house with a two-story, two-bay stuccoed brick gable end kitchen addition.”
Wikipedia article Idalia Manor, CC BY-SA 4.0.

One of 411 National Register listings published here for New Castle County · listed in 1985 · category: Building.

Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

The listing

What is counted as historic. The nomination lists 2 buildingss, 1 structure as contributing to the listing.
Address. Rt. 13, Mt. Pleasant, 19709
When was it listed? September 1985
Category. building
Also known as. Rebuilding St. Georges Hundred 185-1880 TR
Census division. Middletown-Odessa
National Register reference number. 85002118 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Mines and quarries near this property

3 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 3 workings within 5 miles of Idalia Manor: 2 past producers, 1 plant. 1 still produces. What was taken out: Sand and Gravel, Construction, Sulfur. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Site	Commodity	Status	Recorded
Delaware Plant Getty	Sulfur	Plant
Woodlawn Sand & Gravel Pit	Sand and Gravel, Construction	Past Producer
Woodlawn Sand & Gravel Pit & Mill	Sand and Gravel, Construction	Past Producer	Sedimentary

Every working recorded in New Castle County

Map coverage status

No historic map-sheet match is published for this property yet. That does not mean no map exists. This record needs a coordinate-quality review before it can be joined to a sheet boundary. Browse the county's mapped places while that work is pending.

Listed places nearby

6 within 8 miles

Other National Register properties close enough to walk or drive between, ordered by distance from this one. Both positions come from the same geocoding pass that matched these properties to their map sheets.

Property	Distance	Listed
Old Ford Dairy (Boundary Increase)	0.3 miles	1986
Old Ford Dairy	0.3 miles	1985
McWhorter House	0.8 miles	1985
Sutton House	0.9 miles	1973
St. Georges Presbyterian Church	1.0 miles	1984
Vernacular Frame House	1.0 miles	1982

Sources for this property

National Archives record	The nomination case file for reference 85002118 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
New Castle County	All 411 listed properties in this county.

Provenance

Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.