Located on a quiet cul-de-sac in desirable Upper Hidden Valley, this special home has been lovingly maintained and updated over the years by its long time owners. Rooms are large and well laid out, with 4 bedrooms and two baths upstairs. Downstairs are formal living room, separate family room, half bath, eat-in kitchen, laundry closet, formal entry and formal dining space. Kitchen opens to a sunny deck, recently updated with newer trex-style decking. Beautiful in-ground pool will cool you off on hot summer days. You'll love using the path to a nearby school and park, all just a short distance to shopping centers.
Single-familyProperty Type
1975Year Built
8,102 sq ftLot Size
$412Price/Sq.Ft.
2 garage spacesParking
Listed by Deborah Byrne•DRE #01343542• Coldwell Banker Realty
•707-484-4045 (agent)
•dbyrne@sonic.net (agent)
Listed by Florence Sheffer•DRE #01737673• Coldwell Banker Realty
•707-483-5439 (agent)
•mail@florencesheffer.com (agent)
Bought with Linda Tams•DRE #01358244• Coldwell Banker Realty
Bought with Jamil Tams•DRE #01191646• Coldwell Banker Realty
Est. $4,275 per month, based on comparable rentals
Sale and tax history for 3408 Castlerock Ct
Sale History
Tax History
Date
Event
Price
BAREIS #326068948
Oct 1, 2026
Sold
$950,000
$412/sq ft
Sep 10, 2026
Pending
—
Aug 24, 2026
Contingent
—
Aug 23, 2026
Listed
$919,500
$398/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$3,703 (+1.6%)
$101,423 + $232,465
$333,888
2024
$3,644 (+1.5%)
$99,435 + $227,907
$327,342
2023
$3,590 (+6.7%)
$97,486 + $223,439
$320,925
2022
$3,364 (+1.3%)
$95,575 + $219,058
$314,633
2021
$3,321 (+0.3%)
$93,701 + $214,763
$308,464
2020
$3,313 (+0.6%)
$91,864 + $210,552
$302,416
2019
$3,294 (+0.6%)
$90,923 + $208,394
$299,317
2018
$3,274 (+1.9%)
$89,141 + $204,308
$293,449
2017
$3,214 (+4.1%)
$85,681 + $196,375
$282,056
2015
$3,088 (+6.5%)
$84,001 + $192,525
$276,526
2014
$2,899
$81,120 + $185,920
$267,040
2013
$2,900 (+1.6%)
$81,120 + $185,920
$267,040
2012
$2,854 (+2.1%)
$80,754 + $185,080
$265,834
2011
$2,797 (+1.6%)
$79,171 + $181,451
$260,622
2010
$2,753 (−0.6%)
$77,619 + $177,894
$255,513
2009
$2,770 (+2.1%)
$77,039 + $176,565
$253,604
2007
$2,714
$75,709 + $173,515
$249,224
Public record
Public record
Zoning
Permits
Beds
4
Baths
2.5
Stories
2
Lot width
—
Lot depth
—
Lot size
8,100 Sq. Ft.
Year renovated
1976
Sq. Ft.
2,308
Year built
1975
Style
Single Family Residential
County
Sonoma County
APN
173250019000
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Oct 8, 2026.
R-1-7.5
Single-Family Residential District - 7,500 sq ft
The R-1 zoning district is applied to areas of the City intended to be maintained as residential neighborhoods comprised of detached and attached single-family houses, clustered Residential hillside projects, and small multi-family projects, together with compatible accessory uses. The maximum allowable density ranges from 2 to 13 dwellings per acre, with the specific allowable density for each parcel shown on the zoning map by a numerical suffix to the R-1 map symbol see Section 20-22.040. The R-1 zoning district implements and is consistent with the Residential Very Low Density where residential clustered on hillsides is desirable, Low Density or Open Space, Low Density, and Medium Low Density land use classifications of the General Plan.
Permitted uses
Include but are not limited to:
Agriculture-Other
Day care facility
Healthcare-Other
Housing-Single unit
Housing-Student
Housing-Other
Infrastructure-Other
Housing-Mobile home park
Jun 28, 2015 • Final
Residential electrical
Perform an electrical service panel change-out and upgrade the service amperage.
Electrical
Jun 28, 2015 • Final
Residential mechanical
Replace the furnace and air conditioning unit on a residential building.
HVAC
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.