1634 Bittern Dr, Sunnyvale, CA 94087 Property Records

Santa Clara County property record for 1634 Bittern Dr, Sunnyvale, CA 94087

Property Summary

Property Type	Single Family Home
Details	5 bd · 3.5 ba · 1,916 sqft · built 1963
Lot Size	0.145 acres (6,300 sqft)
Owner	2 Individual Names on File
Last Sale	$2,810,000 (Aug 2023)
Tax Bill	$33,394 (2025)
Deeds & Mortgages	Aug 2023 Sale & Mortgage
Flood Zone	Zone X (moderate risk)
APN	`309-42-007`

Property Details

APN / Parcel Number

Primary APN	`309-42-007`

Interior

Bedrooms	5 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	1,916 sqft Living Area
1st Floor Area	1,080 sqft
2nd Floor Area	836 sqft
Family Room	Family Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1963
Effective Year Built	Effective 1963
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	6,300 sqft (0.145 acres)
Lot Dimensions	100 ft deep x 63 ft wide
Garage Area	440 sqft
Parking Spaces	2 Parking Spaces
Porch	Porch

Utilities, Heating & Cooling

Heating System	HVAC

Location & Zoning

Street Address	1634 BITTERN DR
City	SUNNYVALE
State	CA
Zip	94087-4604
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R0
Legal Description	TRACT 3575 BERKELEY ESTATES BOOK 167 PAGE 54 LOT 54
Legal Subdivision	BERKELEY ESTATES
Legal Tract	3575
Legal Lot Number	54
Jurisdiction	SANTA CLARA CA
Township / Civil Division	SAN JOSE
Census Block Group	3
Census Block	3011
Census Tract	508203

Owner

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

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on File
Mailing Address	1634 BITTERN DR, SUNNYVALE, CA 94087-4604
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Aug 3, 2023 · Amount on Record
Deed Sale	Aug 3, 2023 · Amount on Record
Deed Document Number	202325513528
Prior Transfer Date	Jul 27, 2023
Prior Transfer Doc	0025513526
Record Updated	Sep 20, 2026

August 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SANTA CLARA CA
Recording Date	Aug 3, 2023
Property Address	1634 BITTERN DR, SUNNYVALE, CA 94087-4604
Document Number	0025513528
Map Reference	MB 167 PG 54
Instrument Date	Aug 1, 2023
Instrument	25513528
Transaction Type	Transfer
Record Updated	Aug 15, 2023
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	1634 BITTERN DR, SUNNYVALE, CA 94087-4604

Mortgage

Document Number	0025513529
Date	Aug 3, 2023
Instrument	25513529

Lender

Name	BANK OF AMERICA NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2053

Interest

Rate Type	Adjustable Rate
Rate	5.62%
Type Change Date	Sep 1, 2033
Change Frequency	6 Months
Min Rate At Change	2.62%
Max Rate At Change	10.6%
Max Rate	10.6%

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	California
County	Santa Clara County
Municipality	Sunnyvale City
Elementary School District	Cupertino Union Elementary School District (KG - 08)
Secondary School District	Fremont Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$2,923,524 (+2%) Land $2,548,980 Building $374,544
2025	$33,394.00 (+1,387.48%)	$2,866,200 (+1,406.54%) Land $2,499,000 Building $367,200
2023	$2,245.00 (+1.95%) Homeowner's exemption	$190,250 Land $41,718 Building $148,532
2022	$2,202.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

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

FEMA Flood Zone	Zone X moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 7 (15% premium discount)
Nearby Flood Policies	3 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

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

Wildfire Risk	Not rated no burnable land within ember reach

Drinking Water

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

Water System	CITY OF SUNNYVALE serves 157,566 people · EPA ID CA4310014
Water Source	Purchased surface water from several systems
Last State Inspection	Sep 2024
Lead	Under 1 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	63 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 705 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	1,000 / 75
Etheric Communications, LLC. Fixed Wireless	250 / 100
Ridge Wireless Fixed Wireless	100 / 60
T-Mobile USA Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20