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858 Helena Dr, Sunnyvale, CA 94087 Property Records

Santa Clara County property record for 858 Helena Dr, Sunnyvale, CA 94087

Property Summary

Property TypeSingle Family Home
Details4 bd · 2 ba · 1,918 sqft · built 1958
Lot Size0.183 acres (7,957 sqft)
Owner2 Trust Names on File
Last Sale$1,400,000 (May 2008)
Tax Bill$21,518 (2025)
Deeds & MortgagesNov 2021 Mortgage
Flood ZoneZone X (moderate risk)
APN323-24-061

Property Details

APN / Parcel Number

Primary APN323-24-061

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms7 Rooms
Stories1 Story
Building Area1,918 sqft Living Area
Gross Area1,768 sqft
1st Floor Area1,768 sqft
Family RoomFamily Room
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1958
Effective Year BuiltEffective 1958
Architectural StyleL-Shape
Exterior MaterialWood
Construction TypeWood
Roof MaterialWood Shingle
Lot Area7,957 sqft (0.183 acres)
Lot Dimensions109 ft deep x 73 ft wide
Garage Area504 sqft
Parking Spaces2 Parking Spaces
PorchPorch

Utilities, Heating & Cooling

Heating SystemHVAC
Heating FuelGas
SewerMunicipal
Water SourceCommercial

Location & Zoning

Street Address858 HELENA DR
CitySUNNYVALE
StateCA
Zip94087-4119
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR1
Legal DescriptionTRACT 2019 CHERRYHILL WEST BOOK 95 PAGE 48 PAGE 49 LOT 80
Legal SubdivisionCHERRYHILL WEST
Legal Tract2019
Legal Lot Number80
JurisdictionSANTA CLARA CA
Township / Civil DivisionSAN JOSE
Census Block Group2
Census Block2006
Census Tract508303

Owner

858 Helena Dr is owner-occupied and held in a trust since November 2021.

Source: Santa Clara County records, as of July 27, 2026

Owner of Record2 Trust Names on File
Mailing Address858 HELENA DR, SUNNYVALE, CA 94087-4119
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleMay 7, 2008 · Amount on File
Deed SaleMay 7, 2008 · Amount on File
Deed Document Number200819844060
Last Transfer DateNov 5, 2021
Transfer Doc0025180575
Record UpdatedSep 20, 2026

November 2021: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionSANTA CLARA CA
Recording DateNov 30, 2021
Property Address858 HELENA DR, SUNNYVALE, CA 94087-4119
Document Number0025180575
Map ReferenceMB 95 PG 48&49
Instrument DateNov 5, 2021
Instrument25180575
Transaction TypeTransfer
Record UpdatedJun 7, 2023
Title CompanyORANGE COAST TTL CO OF NOCAL

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipFamily Trust
Address858 HELENA DR, SUNNYVALE, CA 94087-4119

Mortgage

Document Number0025180576
DateNov 30, 2021
Instrument25180576
Lender
NameWELLS FARGO BANK NA
TypeBank
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term241 Months
DueDec 1, 2041

Tax Assessment & Valuation

The 2025 property tax bill for 858 Helena Dr was $21,518 with a homeowner's exemption.

Source: Santa Clara County assessment roll, as of July 27, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountySanta Clara County
MunicipalitySunnyvale City
Elementary School DistrictCupertino Union Elementary School District (KG - 08)
Secondary School DistrictFremont Union High School District (09 - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$1,875,687 (+2%) Land $1,339,782 Building $535,905
2025$21,518.00 Homeowner's exemption$1,838,910 Land $1,313,512 Building $525,398
2023$20,833.00 (+0.57%) Homeowner's exemption$1,767,505 Land $1,262,507 Building $504,998
2022$20,714.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

FEMA maps place 858 Helena Dr in Zone X, an area of moderate flood risk.

Source: FEMA National Flood Hazard Layer, effective January 18, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
moderate risk
500-Year FloodplainYes
0.2% annual chance
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 7 (15% premium discount)
Nearby Flood Policies2 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

The area around 858 Helena Dr has no burnable land within ember reach, so its wildfire risk is not rated.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskNot rated
no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemCITY OF SUNNYVALE
serves 157,566 people · EPA ID CA4310014
Water SourcePurchased surface water from several systems
Last State InspectionSep 2024
LeadUnder 1 ppb (2023–2025)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and Reporting63
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 589 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
Etheric Networks
Fixed Wireless		250 / 100
AT&T
Fixed Wireless · DSL · Fiber in parts of the area		100 / 20

May also be available: GeoLinks, T-Mobile.

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