Usonia Historic District

Listed on the National Register of Historic Places in 2012. 12 historic topographic surveys show this location, the earliest from 1892.

From the record

“Usonia Historic District is a planned community and national historic district in the Town of Mount Pleasant, adjacent to the village of Pleasantville, Westchester County, New York.”
Wikipedia article Usonia Historic District, CC BY-SA 4.0.

One of 250 National Register listings published here for Westchester County · listed in 2012 · category: District.

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

The listing

Address. Usonia & Rocky Vale Rds., Laurel Hill & Orchard Brook Drs., Pleasantville, 10570
When was it listed? September 2012
Category. district
Town. Mount Pleasant town
Architect. David T. Henken, Aaron Resnick, Frank Lloyd Wright
National Register reference number. 12000600 - 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.

Then and now

1892 to 1998

The ground this property stands on, surveyed 106 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

Topographic sheet covering Usonia Historic District, surveyed 1998

Topographic sheet covering Usonia Historic District, surveyed 1892

Fires near this property

374 since 2000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 374 fires within 5 miles of Usonia Historic District between 2000 and 2020, burning about 331 acres in total. 61 started naturally. 23 were recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.

Reported cause	Fires
Missing data/not specified/undetermined	151
Natural	61
Recreation and ceremony	33
Smoking	30
Debris and open burning	29
Arson/incendiarism	23
Power generation/transmission/distribution	22
Equipment and vehicle use	21
Misuse of fire by a minor	4

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Date	Cause	Size	Reported by	Name on the report
8 September 2010	Debris and open burning	under an acre	Fire Department of New York	not named
8 September 2007	Missing data/not specified/undetermined	under an acre	Fire Department of New York	not named
7 September 2007	Missing data/not specified/undetermined	under an acre	Fire Department of New York	not named
5 September 2016	Debris and open burning	3.8 acres	Fire Department of New York	N/A
5 September 2014	Missing data/not specified/undetermined	under an acre	Fire Department of New York	not named
5 September 2008	Power generation/transmission/distribution	under an acre	Fire Department of New York	not named
4 September 2016	Smoking	under an acre	Fire Department of New York	N/A
4 September 2014	Missing data/not specified/undetermined	under an acre	Fire Department of New York	not named

Every fire recorded in Westchester County

Mines and quarries near this property

6 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 6 workings within 5 miles of Usonia Historic District: 5 past producers, 1 producer. 1 still produces. What was taken out: Iron, Granite, Peat. 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
Armonk Plant	Peat	Past Producer	Peat
Lake Street Granite Mine	Granite	Producer
Lake Street Granite Quarry	Granite	Past Producer	Granite
Ackerman's Limonite Mine	Iron	Past Producer	Limonite
Ackerman's Limonite Mine	Iron	Past Producer	Residual
Ackerman's Limonite Mine	Iron	Past Producer

Every working recorded in Westchester County

Storms near this property

13 since 1997

Regional context, not property-specific evidence. The National Weather Service names Pleasantville, the town this property stands in, in 13 storm reports between 1997 and 2024: 8 thunderstorm wind, 2 flash flood, 1 lightning, 1 flood. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.

When	Event	Place named	Harm	What the report says
June 2008	Lightning	Pleasantville	$200,000	Lightning struck the upper portion of a condo complex, ignited fires, and displaced at least 8 families.
August 2011	Thunderstorm Wind	Pleasantville	$50,000	The National Weather Service in coordination with Westchester County \|Office of Emergency Management performed a storm survey in Westchester County. \|\|The survey determined that a storm produced a swath of straight line wind damage from Pleasantville to Chappaqua with wind gusts up to 80 mph. \|\|At Chappaqua, Kipp Street near the intersection of Quaker Road (Route 120) was partially closed due to downed large tree branches and several large downed trees, some into houses. Peak wind gusts were estimated at 60 to 70 mph. \|\|At Pleasantville, where the most significant thunderstorm wind damage occurred, peak wind gusts were estimated at 70 to 80 mph between 300 and 500 Washington Avenue. Several large trees and branches were downed, including into houses, with a few tree tops snapped off. Damage to gutters and backyard decks occurred as well due to falling trees.
August 2009	Thunderstorm Wind	Pleasantville	$7,500	Numerous trees were reported down throughout Pleasantville, including some down on wires, causing sporadic power outages.
May 2018	Thunderstorm Wind	Pleasantville	$5,000	Multiple trees were reported down across town.
July 2024	Thunderstorm Wind	Pleasantville	$3,000	Multiple trees down on highway 100 north of Chappaqua Road.
June 2018	Thunderstorm Wind	Pleasantville	$3,000	A tree down on wires on Old Sleepy Hollow Road.
June 2020	Thunderstorm Wind	Pleasantville	$2,000	Trees reported down with time estimated by radar.
July 2019	Flash Flood	Pleasantville	-	All southbound lanes closed on the Saw Mill River Parkway due to flooding south of Grant Street (Exit 30) in the vicinity of Pleasantville Road (CR 106) in Mount Pleasant.
July 2013	Flash Flood	Pleasantville	-	The Saw Mill River Pkwy. was closed in Hawthorne between the Taconic Pkwy. and Manville Rd. due to flooding.
May 2011	Flood	Pleasantville	-	The Saw Mill River Pkwy. around Marble Ave. near the Taconic State Pkwy., and the Bronx River Pkwy. from the County Center in White Plains south to the Sprain Brook Pkwy. were closed due to flooding. Two water rescues were performed on the Bronx River Pkwy., one of which was at Pondfield Rd. in Bronxville.
July 2011	Hail	Pleasantville	-	Hail was observed on the Taconic Parkway in Briarcliff Manor.
August 2009	Thunderstorm Wind	Pleasantville	-	Thunderstorm winds damaged trees and power lines in Briarcliff Manor.
July 1997	Thunderstorm Wind	Pleasantville	-	no account filed

Every storm recorded in Westchester County

Maps showing this location

12 surveys

United States Geological Survey topographic sheets whose coverage includes this point. Matched by taking the middle of the area the National Park Service maps for this listing, then testing that coordinate against the published boundary of every sheet.

1892 USGS Stamford quadrangle1:62500
1893 USGS Stamford quadrangle1:62500
1899 USGS Stamford quadrangle1:62500 - 13 printings
1947 USGS Hartford quadrangle1:250000 - 2 printings
1948 USGS Hartford quadrangle1:250000 - 2 printings
1955 USGS Mount Kisco quadrangle1:24000 - 5 printings
1961 USGS Hartford quadrangle1:250000
1962 USGS Hartford quadrangle1:250000 - 3 printings
1965 USGS Hartford quadrangle1:250000 - 2 printings
1982 USGS Mount Kisco quadrangle1:24000
1986 USGS Bridgeport quadrangle1:100000 - 3 printings
1998 USGS Mount Kisco quadrangle1:24000

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
Witthoefft House	0.6 miles	2011
Bedford Road Historic District	1.9 miles	1985
St. John's Episcopal Church	2.1 miles	2017
Rehoboth	2.2 miles	1979
Church of Saint Mary the Virgin and Greeley Grove	2.2 miles	1979
Marmaduke Forster House	2.2 miles	2011

Sources for this property

National Archives record	The nomination case file for reference 12000600 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Westchester County	All 250 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.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
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.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.