Belle Ainsworth Jenkins Estate

Listed on the National Register of Historic Places in 1978.

From the record

“The Belle Ainsworth Jenkins Estate, located near Beaverton, Oregon, United States, is listed on the National Register of Historic Places. Built starting in 1912, the main house on the property was intended as a summer home.”
Wikipedia article Belle Ainsworth Jenkins Estate, CC BY-SA 4.0.

One of 51 National Register listings published here for Washington County · listed in 1978 · category: Building.

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

The listing

Listed as. Jenkins, Belle Ainsworth, Estate - the National Register files a house under its owner's surname.
Address. 20950 SW Farmington Rd., Beaverton, 97007
When was it listed? November 1978
Category. building
Census division. Beaverton-Hillsboro
National Register reference number. 78002327 - 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

10 of 26 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 26 workings within 5 miles of Belle Ainsworth Jenkins Estate: 20 past producers, 6 producers. 6 still produce. What was taken out: Stone, Stone, Crushed/Broken, Clay, Sand and Gravel, Construction. 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
Scholls Tile Co	Clay	Past Producer
Scholls Tile Co.	Clay	Past Producer
Topsil Pit	Sand and Gravel, Construction	Past Producer
Unnamed Pit	Sand and Gravel, Construction	Producer
Aloha Quarry Quality Rock Plant #1	Stone, Crushed/Broken	Producer
Beaverton Quarry	Stone, Crushed/Broken	Producer
Farmington Quarry	Stone, Crushed/Broken	Producer
Grabhorn Quarry	Stone, Crushed/Broken	Past Producer
John Mathews	Stone, Crushed/Broken	Past Producer
Murray Road Quarry	Stone, Crushed/Broken	Producer

Every working recorded in Washington County

Storms near this property

7 since 2003

Regional context, not property-specific evidence. The National Weather Service names Beaverton, the town this property stands in, in 7 storm reports between 2003 and 2021: 4 heavy rain, 1 funnel cloud, 1 hail, 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 2014	Heavy Rain	Beaverton	$140,000	Heavy rain from convective showers resulted in significant flooding near Beaverton. Flooding was reported of four homes, four apartments, several garages, the Winterhawks Skating Center, and a community pool. The city Public Works Director reported 2.3 inches of rain per hour, a personal weather station reported 2.29 inches of rain over 2 hours, and the National Weather Service Doppler radar estimated 1.7 inches per hour. A car stalled in a flooded high water in an underpass near the US 26-US 217 interchange. The cost damage is an estimate based on reports from the General Manager of the Skating Center and previous history of similar residential damage.
October 2015	Heavy Rain	Beaverton	$50,000	Heavy rain combined with clogged drains resulted in small stream and urban flooding. There were 16 instances where water or agricultural debris needed to be cleared from roadways. At least two residential basements were flooded in Beaverton. A large basement of an office building was flooded in Hillsboro.
July 2007	Hail	Beaverton	$1,000	Hail was reported in Beaverton near Cooper Mountain.
January 2021	Flood	Beaverton	-	Road closure at SW 149th Ave. and SW Division St. near South Johnson Creek in Beaverton.
June 2011	Heavy Rain	Beaverton	-	Thunderstorms produced very heavy rain in Beaverton in a short period of time. A spotter reported over one-half inch of rain in 30 minutes. The Washington County Sheriff Office reported Urban Flooding on several streets as well as Highway 217, which was shut down for a short time.
June 2010	Heavy Rain	Beaverton	-	An observer reported 1.68 inches of precipitation over the area during a 12 hour period.
April 2003	Funnel Cloud	Beaverton	-	no account filed

Every storm recorded in Washington 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
Andrew Jackson and Sarah Jane Masters House	1.9 miles	2015
M. E. Blanton House	2.8 miles	1989
Aloha Farmhouse	3.6 miles	2014
Beaverton Downtown Historic District	4.5 miles	1986
Malcolm McDonald House	4.7 miles	2015
Augustus Fanno Farmhouse	4.7 miles	1984

Sources for this property

National Archives record	The nomination case file for reference 78002327 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Washington County	All 51 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.
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.