Upton Sinclair House
Added to the National Register in 1971, and a National Historic Landmark.
The record
| Register name | Sinclair, Upton, House |
| Property type | Building |
| Address | 464 N. Myrtle Ave., Monrovia, CA |
| County | Los Angeles County |
| Listed | Nov 11, 1971 |
| Listed for | Literature |
| Level of significance | National |
| Reference number | 71000153 |
| Designations | National Historic Landmark |
The nomination form, the document that argues why this place matters, is in the National Archives: Read the nomination ↗
Visiting
| Address | 464 N. Myrtle Ave., Monrovia, CA |
| Coordinates | 34.1622° N, 118.0000° W · Directions ↗ |
Explore
Map
Nearby in Los Angeles County
Public land around it
| Angeles National Forest ↗National Forest, U.S. Forest Service | About a mile away706,719 acres |
Wilderness Atlas publishes a centroid and an acreage for each unit, not a boundary line. Distance here is measured to a circle of the same area drawn around that centroid, so treat it as roughly right rather than surveyed.
Local history books for Los Angeles County
We earn a small commission if you buy through these links. It does not change what we list.
Guidebooks to historic places in California
Titles come from Open Library's catalog, matched by subject heading or by title.
Reference
Questions people ask
When was Upton Sinclair House listed on the National Register?
Nov 11, 1971. It is also a National Historic Landmark, the higher of the two designations.
Source: National Park Service
Where is Upton Sinclair House?
464 N. Myrtle Ave., Monrovia, Los Angeles County, California.
Source: National Park Service
Where is the nomination form for Upton Sinclair House?
The National Archives holds the nomination form, the document that made the case for listing.
Source: National Archives
Is there a wildfire near Upton Sinclair House right now?
1 active incident within 50 miles as of 2026-10-17, nearest Bryson, 48 miles away.
Source: Map
Sources
Name, location, type and dates come from the National Register office's spreadsheet of listed properties, because the Park Service's spatial data does not carry this listing. The map point comes from Wikidata. Construction date, architect, style, photograph and encyclopedia link come from Wikidata and Wikimedia Commons, matched on reference number 71000153. Nothing here is transcribed by hand. The nomination form and photographs ↗ at NPGallery are the original nomination as filed with the National Park Service, and the form is often the best description of the place.