OFF MARKET
Google satellite image for 509 Sanitarium Rd, Saint Helena, CA 94574
Off market dec 1990 for $275K
$625,899
Est. refi paymentEst. refi $823/mo
Land
•
0.37
acre (lot)

509 Sanitarium Rd, Saint Helena, CA 94574

map-entry

About this home

509 Sanitarium Rd is a 1,820 square foot vacant land on a 0.37 acre lot with 4 bedrooms. - it last sold on December 18, 1990 for $275,000. Based on Redfin's Saint Helena data, we estimate the home's value is $625,899.
Vacant landProperty Type
1946Year Built
0.37 acresLot Size
$1,691,618Price/Acres
1 car garageParking
Source:Public Records

Redfin Estimate

$625,899
$351K since sold in December 1990$23K since September

This home's estimate is 54.5% lower than the average sale price ($1.38M) of 6 comparable homes.

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Market trends in 94574, CA

Last updated September 2026

Buyer's Market

Seller's Market

Buyer's market

Sale-to-list price
91.5%

1.0% MoM

Median sale price
$2.2M

$87K MoM

Avg. days on market
74d

2 days MoM

Recently sold homes
20

1 MoM

New listings for sale

Provided by Redfin

Sale history for 509 Sanitarium Rd

Tax history for 509 Sanitarium Rd

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Zoning

RS

B-5

Residential Single District

The RS district classification is intended to be applied in appropriate locations to allow residential developments of varying population density to meet the housing needs of present and future population in the unincorporated area in accordance with the county's general plan. RS districts will be located within established urban areas where existing urban services and facilities are adequate to serve the intended development. Limited RS development is intended to assist in the preservation of the natural and agricultural resources of the county. The RS district is also intended to serve the following purposes: To regulate the density of population; To promote stability of residential development; To conserve the value of land and buildings; To regulate the bulk of buildings; To provide for open space in residential areas.
Zone overlays
Permitted uses

Include but are not limited to:

  • Housing-Single unit
  • Housing-Multiple units
  • Housing-Senior
  • Housing-Other
  • Educational/school
  • Communications tower

Property details

Around this home

Schools

Saint Helena Elementary School

Public 3-5 • Assigned • 2.2mi

8/10
Robert Louis Stevenson Intermediate School

Public 6-8 • Assigned • 2.0mi

4/10
Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

4/10 Fire Factor

2% chance of being in a wildfire in next 30 years

5/10 Heat Factor

7 days above 98° expected this year, 17 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

10/10 Air Factor

22 unhealthy days expected this year, 22 days in 30 years

Provided by First Street

Historical weather

Saint Helena, CA • 94574
Average low and high temperatures (°F)
59
39
59
41
67
44
66
45
76
50
83
52
85
54
89
56
82
56
75
49
61
43
57
41
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Sun exposure

In this area, properties receive around 11.7 hours in June and 4.9 hours in December, placing it above the U.S. average for solar exposure.

11.7 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$595,000 – $720,000

Sell confidently with a local market expert in Saint Helena. 3 minutes to get started.

Nearby similar homes

$100,000,000
14 beds9.5 baths8,387 sq ft
750 Conn Valley Rd, St Helena, CA 94574
$299,000
Land— sq ft
6670 Cougar Ln, Santa Rosa, CA 95409
TSG Premier Realty
VIDEO TOUR
$6,499,000
3 beds4 baths3,796 sq ft
2395 Pickett Rd, Calistoga, CA 94515
$9,998,000
8 beds6.5 baths8,071 sq ft
4100 Petrified Forest Rd, Calistoga, CA 94515
$3,995,000
2 beds2 baths2,500 sq ft
321 Dutch Henry Canyon Rd, Calistoga, CA 94515
$2,250,000
4 beds3 baths4,448 sq ft
3460 Mount Veeder Rd, Napa, CA 94558

New listings for sale in 94574

$2,550,000
4 beds3 baths2,077 sq ft
270 Pratt Ave, Saint Helena, CA 94574
$2,950,000
3 beds2.5 baths2,042 sq ft
481 Crystal Springs Rd, Saint Helena, CA 94574
$2,959,000
4 beds3 baths3,507 sq ft
1262 Allyn Ave, Saint Helena, CA 94574

Home values near 509 Sanitarium Rd

Data from public records.
AddressRedfin Estimate
2 Beds | 1 Baths | 816 Sq. Ft.
$795,697
3 Beds | 2 Baths | 1876 Sq. Ft.
$1,360,976
AddressRedfin Estimate
3 Beds | 3 Baths | 1827 Sq. Ft.
$1,095,454
3 Beds | 2.5 Baths | 1627 Sq. Ft.
$827,308
AddressRedfin Estimate
2 Beds | 2.5 Baths | 1217 Sq. Ft.
$880,446
3 Beds | 3 Baths | 1827 Sq. Ft.
$1,834,013

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