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Photograph of Condominium 1
Photograph by Sanfranman59, CC BY-SA 3.0. Via Wikimedia Commons.

Condominium 1

A National Historic Landmark. Listed on the National Register of Historic Places in 2005. 10 historic topographic surveys show this location, the earliest from 1921.

From the record

“Condominium 1 was the first unit in the Sea Ranch development in Sonoma County, California. Located on a coast overlooking the Pacific Ocean, the complex was designed by Charles W.”

Wikipedia article Condominium 1, CC BY-SA 4.0.

One of 73 National Register listings published here for Sonoma County · listed in 2005 · category: Building · a National Historic Landmark.

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

The listing

  • National Historic Landmark. The highest federal designation, held by about 2,600 places in the country against roughly 100,000 Register listings.
  • What is counted as historic. The nomination lists 1 building as contributing to the listing.
  • Address. 110-128 Sea Walk Dr., The Sea Ranch, 95497
  • When was it listed? July 2005
  • Category. building
  • Census division. Russian River-Sonoma Coast
  • Architectural style. modern architecture
  • Architect. Richard Whitaker, Donlyn Lyndon, William Turnbull, Lawrence Halprin, Charles Moore
  • National Register reference number. 05000731 - 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.

Fires near this property

69 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 69 fires within 5 miles of Condominium 1 between 1992 and 2020, burning about 267 acres in total. None started naturally. 1 was 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/undetermined26
Equipment and vehicle use21
Debris and open burning13
Power generation/transmission/distribution3
Smoking2
Recreation and ceremony2
Misuse of fire by a minor1
Arson/incendiarism1

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

DateCause SizeReported by Name on the report
8 September 2002Equipment and vehicle useunder an acreSonoma-Lake Napa UnitHWY 1
7 September 2016Missing data/not specified/undeterminedunder an acreCalifornia Department of Forestry & Fire ProtectionSORCERER WOOD THE_SEA_R
3 September 1998Equipment and vehicle useunder an acreNorthern California DistrictRICHARDSON
22 September 1996Missing data/not specified/undeterminedunder an acreSonoma-Lake Napa UnitHWY 1
21 September 1996Missing data/not specified/undetermined1.0 acresSonoma-Lake Napa UnitSTEWART
21 September 1996Missing data/not specified/undeterminedunder an acreSonoma-Lake Napa UnitRANCH
1 September 2017Missing data/not specified/undeterminedunder an acreCalifornia Department of Forestry & Fire ProtectionMARINERS DR THE_SEA_RANC
7 August 2003Equipment and vehicle use4.0 acresSonoma-Lake Napa UnitSTARCROSS

Every fire recorded in Sonoma 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 Condominium 1: 3 producers, 1 prospect, 1 past producer, 1 occurrence. 3 still produce. What was taken out: Manganese, 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.

Where SiteCommodity StatusRecorded
Gualala BarSand and Gravel, ConstructionProducer
Twin Bridges Section 2Sand and Gravel, ConstructionProducer
Dillon and SeefeldtManganeseProspect
Dillon and Seefeldt DepositManganeseProducer
Dillon and Seefeldt ManganeseManganesePast Producer
Wallace ProspectManganeseOccurrence1918

Every working recorded in Sonoma County

Maps showing this location

10 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.

Listed places nearby

4 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.

Photograph PropertyDistance Listed
Hines House0.9 miles2021
Mini-Mod #30.9 miles2026
Baker House1.0 miles2018
Knipp and Stengel Ranch Barn2.9 miles1987

Sources for this property

National Archives recordThe nomination case file for reference 05000731 in Record Group 79.
Wikipedia articleCommunity-written account of this property, licensed CC BY-SA.
Sonoma CountyAll 73 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.