Timby House

Listed on the National Register of Historic Places in 2024. 19 historic topographic surveys show this location, the earliest from 1902.

From the record

One of 63 National Register listings published here for San Mateo County · listed in 2024 · category: Building.

Sources: the National Register database, National Park Service

The listing

What is counted as historic. The nomination lists 2 buildingss as contributing to the listing.
Still standing. The Park Service records this property as extant.
Address. 621 Knoll Dr., San Carlos, 94070
When was it listed? May 2024
Category. building
Census division. San Mateo
National Register reference number. 100007818 - assigned by the National Park Service when the property was listed.

Then and now

1902 to 1997

The ground this property stands on, surveyed 95 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

Topographic sheet covering Timby House, surveyed 1997

Topographic sheet covering Timby House, surveyed 1902

Fires near this property

305 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 305 fires within 5 miles of Timby House between 1992 and 2020, burning about 147 acres in total. 1 started naturally. 27 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	167
Equipment and vehicle use	53
Arson/incendiarism	27
Smoking	26
Misuse of fire by a minor	13
Recreation and ceremony	8
Debris and open burning	5
Power generation/transmission/distribution	4
Other causes	1
Natural	1

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
9 September 2017	Missing data/not specified/undetermined	under an acre	California Department of Forestry & Fire Protection	NB HWY 280 / EDGEWOOD OF
7 September 2020	Missing data/not specified/undetermined	under an acre	San Mateo-Santa Cruz Unit	not named
6 September 2001	Equipment and vehicle use	under an acre	San Mateo-Santa Cruz Unit	EDGEWOOD
6 September 1996	Equipment and vehicle use	1.5 acres	San Mateo-Santa Cruz Unit	OYSTER POINT
6 September 1993	Arson/incendiarism	under an acre	San Mateo-Santa Cruz Unit	PIPE
5 September 2019	Missing data/not specified/undetermined	under an acre	San Mateo-Santa Cruz Unit	not named
5 September 2011	Missing data/not specified/undetermined	1.0 acres	San Mateo-Santa Cruz Unit	not named
5 September 2009	Debris and open burning	under an acre	California Department of Forestry & Fire Protection	not named

Every fire recorded in San Mateo County

Mines and quarries near this property

10 of 42 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 42 workings within 5 miles of Timby House: 21 producers, 19 past producers, 2 unknowns. 21 still produce. What was taken out: Stone, Crushed/Broken, Stone, Mercury, Salt. 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
Ideal Cement Company	Limestone, General, Clay	Producer
Redwood City Operation	Halite	Producer
Granite Rock	Sand and Gravel, Construction	Past Producer	Sedimentary
Granite Rock	Sand and Gravel, Construction	Past Producer
Kaiser Gypsum	Gypsum-Anhydrite	Producer	Sedimentary
Kaiser Gypsum	Gypsum-Anhydrite	Past Producer
Redwood Material Co.	Manganese	Producer
Redwood Material Co.	Manganese	Past Producer
Redwood City Operation	Salt	Past Producer
Redwood City Plant	Salt	Producer

Every working recorded in San Mateo County

Storms near this property

3 since 2010

Regional context, not property-specific evidence. The National Weather Service names San Carlos, the town this property stands in, in 3 storm reports between 2010 and 2024: 1 flood, 1 hail, 1 thunderstorm wind. 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
January 2010	Flood	San Carlos	$15,000	Heavy rain caused Pulgas Creek to overflow its banks and flood some classrooms at Central Middle School in San Carlos. Also, several streets were blocked off in low-lying areas just west of US Highway 101, including Taylor Avenue in San Carlos and parts of Rolison Road in Redwood City. In Atherton, officials closed March Road from Middlefield Road to Fair Oaks Avenue because a creek had begun to flood.
February 2024	Thunderstorm Wind	San Carlos	$10	Three inch tree limbs were broken, and power lines were downed.
March 2018	Hail	San Carlos	-	Social media photos showing pea-sized hail in San Carlos.

Every storm recorded in San Mateo County

Maps showing this location

19 surveys

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

1902 USGS Santa Cruz quadrangle1:125000 - 9 printings
1940 USGS Halfmoon Bay quadrangle1:62500 - 2 printings
1943 USGS Halfmoon Bay quadrangle1:62500
1947 USGS San Francisco quadrangle1:250000
1948 USGS San Francisco quadrangle1:250000
1953 USGS Woodside quadrangle1:24000 - 2 printings
1955 USGS San Francisco quadrangle1:250000
1956 USGS San Francisco quadrangle1:250000 - 4 printings
1957 USGS San Francisco quadrangle1:250000
1960 USGS San Francisco quadrangle1:250000
1961 USGS Half Moon Bay quadrangle1:62500 - 2 printings
1961 USGS San Francisco quadrangle1:250000
1961 USGS Woodside quadrangle1:24000 - 4 printings
1964 USGS San Francisco quadrangle1:250000
1971 USGS San Francisco quadrangle1:250000
1982 USGS Palo Alto quadrangle1:100000 - 2 printings
1985 USGS San Francisco quadrangle1:250000
1991 USGS Woodside quadrangle1:24000
1997 USGS Woodside 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
Nathanial Brittan Party House	0.4 miles	1994
Southern Pacific Depot	0.6 miles	1984
Redwood City Woman's Club	1.7 miles	2021
William C. Ralston House	1.8 miles	1966
Sequoia Union High School	1.9 miles	1995
Lathrop House	2.1 miles	1973

Sources for this property

National Archives record	The nomination case file for reference 100007818 in Record Group 79.
San Mateo County	All 63 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.