Listed by Jennifer Perez•DRE #02030607• Pivniska Real Estate Group
Contact: 707-474-4625
For sale
$450,000
Est. $3,018/mo —
3
bd
•
3 ba
•
3,140
sq ft
3725 Spring Vly, Clearlake Oaks, CA 95423
About this home
Welcome to The Castle of Spring Valley! Set on 1.31 usable acres, this truly unique property offers charm, versatility, and endless potential. Originally a two-bedroom, two-bath manufactured home 1,641 sq. ft. , the residence has been beautifully expanded into approximately 3,140 sq. ft. of comfortable living space. Offering an XL master bed with large closets, large en suite bath. Cozy wood burning stove in family room, large living room great for gathering and making memories. Dining room just off the kitchen. A charming breezeway connects the home to an oversized garage featuring a workshop and abundant storage. Above the garage is an approximately 1,500 sq. ft. one-bedroom, one-bath apartment with its own private entrancevideal for multi-generational living, guests, rental income, or a private office. The backyard is designed for enjoying the outdoors, with a spacious deck leading to a cozy sitting area, a well-maintained hot tub, outdoor kitchen potential, and plenty of room for gardening, recreation, or creating your own private retreat. Full of character and unlike anything else on the market, this property is ready for its next chapter. With a little updating, this exceptional home could truly become something spectacular. If you’re looking for space, flexibility, and the opportunity to make a one of a kind property your own, The Castle of Spring Valley is ready to welcome you home.
Welcome to The Castle of Spring Valley! Set on 1.31 usable acres, this truly unique property offers charm, versatility, and endless potential. Originally a two-bedroom, two-bath manufactured home 1,641 sq. ft., the residence has been beautifully expanded into approximately 3,140 sq. ft. of comfortable living space. Offering an XL master bed with large closets, large en suite bath. Cozy wood burning stove in family room, large living room great for gathering and making memories. Dining room just off the kitchen. A charming breezeway connects the home to an oversized garage featuring a workshop and abundant storage. Above the garage is an approximately 1,500 sq. ft. one-bedroom, one-bath apartment with its own private entrancevideal for multi-generational living, guests, rental income, or a private office. The backyard is designed for enjoying the outdoors, with a spacious deck leading to a cozy sitting area, a well-maintained hot tub, outdoor kitchen potential, and plenty of room for gardening, recreation, or creating your own private retreat. Full of character and unlike anything else on the market, this property is ready for its next chapter. With a little updating, this exceptional home could truly become something spectacular. If you're looking for space, flexibility, and the opportunity to make a one of a kind property your own, The Castle of Spring Valley is ready to welcome you home.
CRMLS #LC26166002
Sep 5, 2026
Price Changed
$450,000
$143/sq ft
Jul 30, 2026
Listed
$479,000
$153/sq ft
Public Records
Feb 1, 2005
Sold
$280,000
$89/sq ft
CRMLS #LC83212
Aug 31, 2003
Listing Removed
—
May 31, 2003
Listed
$295,000
$94/sq ft
Public Records
May 23, 2001
Sold
$110,000
$35/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$4,347 (+1.1%)
$139,381 + $250,897
$390,278
2024
$4,301 (+10.1%)
$139,381 + $250,897
$390,278
2023
$3,905 (+11.1%)
$100,000 + $220,000
$320,000
2022
$3,516 (+21.8%)
$100,000 + $220,000
$320,000
2021
$2,886 (−0.5%)
$100,000 + $220,000
$320,000
2020
$2,900 (+14.4%)
$100,000 + $150,000
$250,000
2019
$2,534 (−2.1%)
$80,000 + $144,000
$224,000
2018
$2,588 (+3.0%)
$80,000 + $144,000
$224,000
2017
$2,512 (+2.6%)
$80,000 + $144,000
$224,000
2016
$2,448 (+0.4%)
$80,000 + $144,000
$224,000
2015
$2,439 (+0.1%)
$80,000 + $144,000
$224,000
2014
$2,436 (+1.2%)
$80,000 + $144,000
$224,000
2013
$2,406 (−1.8%)
$80,000 + $144,000
$224,000
2012
$2,451
$80,000 + $144,000
$224,000
Public record
Public record
Zoning
Beds
2
Baths
2
Stories
—
Lot width
—
Lot depth
—
Lot size
1.31 Acres
Year renovated
—
Finished Sq. Ft.
1,640
Unfinished Sq. Ft.
—
Total Sq. Ft.
1,640
Year built
1977
Style
Vacant Land
County
Lake County
APN
062043090000
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 7, 2026.
SR
Suburban Reserve District
To provide for large lot residential development in areas where the establishment of appropriate infrastructure such as public water, sewer, and county maintained roads will ultimately support higher densities. The following regulations shall apply in all SR districts.
Permitted uses
Include but are not limited to:
Agriculture
Greenhouse / nursery
Housing-Single unit
Housing-Other
Agriculture-Cropland
Housing-Mobile home park
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
8/10 Fire Factor
27% chance of being in a wildfire in next 30 years
7/10 Heat Factor
8 days above 100° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
10/10 Air Factor
36 unhealthy days expected this year, 37 days in 30 years
Provided by First Street
Historical weather
Clearlake Oaks, CA • 95423
Average low and high temperatures (°F)
59
41
58
42
66
45
68
48
78
54
88
61
89
64
92
66
85
62
74
55
60
46
58
45
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
75/ 100
Good sunlight
Sunscore
There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
8.1 hrs
4.8 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 3725 Spring Vly
$438,838
$11K under list price of $450K
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $200K to $364K.