Santa Clara County property record for 1638 Bittern Dr, Sunnyvale, CA 94087
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 1,729 sqft · built 1964 |
| Lot Size | 0.143 acres (6,240 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $2,700,000 (Sep 2021) |
| Tax Bill | $33,481 (2025) |
| Deeds & Mortgages | Apr 2024 Transfer Sep 2021 Sale & Mortgage + 1 more |
| Flood Zone | Zone X (moderate risk) |
| APN | 309-42-006 |
| Primary APN | 309-42-006 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 1,729 sqft Living Area |
| 1st Floor Area | 1,729 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1964 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 6,240 sqft (0.143 acres) |
| Lot Dimensions | 96 ft deep x 65 ft wide |
| Garage Area | 441 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Street Address | 1638 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 55 |
| Legal Subdivision | BERKELEY ESTATES |
| Legal Tract | 3575 |
| Legal Lot Number | 55 |
| Jurisdiction | SANTA CLARA CA |
| Township / Civil Division | SAN JOSE |
| Census Block Group | 3 |
| Census Block | 3011 |
| Census Tract | 508203 |
Source: Santa Clara County records, 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 Company Names on Record |
|---|---|
| Mailing Address | 1638 BITTERN DR, SUNNYVALE, CA 94087-4604 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Date | Document |
|---|---|
| Apr 18, 2024 | Intrafamily Transfer, Transfer |
| Sep 2, 2021 | Grant Deed, Transfer · Conventional Mortgage WELLS FARGO BANK NA |
| Oct 5, 2020 | Affidavit of Death, Transfer ATTORNEY ONLY |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 2, 2021 · Amount on Record |
| Deed Sale | Sep 2, 2021 · Amount on Record |
| Deed Document Number | 202125086944 |
| Last Transfer Date | Mar 8, 2024 |
| Transfer Doc | 0025624415 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Recording Date | Apr 18, 2024 |
| Property Address | 1638 BITTERN DR, SUNNYVALE, CA 94087-4604 |
| Document Number | 0025624415 |
| Map Reference | MB 167 PG 54 |
| Instrument Date | Mar 8, 2024 |
| Instrument | 25624415 |
| Transaction Type | Transfer |
| Record Updated | May 21, 2024 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 1638 BITTERN DR, SUNNYVALE, CA 94087-4604 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Recording Date | Sep 2, 2021 |
| Property Address | 1638 BITTERN DR, SUNNYVALE, CA 94087-4604 |
| Document Number | 0025086944 |
| Map Reference | MB 167 PG 54 |
| Instrument Date | Aug 30, 2021 |
| Instrument | 25086944 |
| Transaction Type | Transfer |
| Record Updated | Sep 10, 2021 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 1638 BITTERN DR, SUNNYVALE, CA 94087-4604 |
| Document Number | 0025086945 |
|---|---|
| Date | Sep 2, 2021 |
| Instrument | 25086945 |
| Name | WELLS FARGO BANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Oct 1, 2051 |
| Document Type | Affidavit of Death |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Recording Date | Oct 5, 2020 |
| Property Address | 1638 BITTERN DR, SUNNYVALE, CA 94087-4604 |
| Document Number | 0024642742 |
| Instrument Date | Sep 30, 2020 |
| Instrument | 24642742 |
| Transaction Type | Transfer |
| Record Updated | Oct 15, 2020 |
| Title Company | ATTORNEY ONLY |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 1411 TOPAR AVE LOS ALTOS CA 940245943, LOS ALTOS, CA 94024-5943 |
Source: Santa Clara County assessment roll, as of July 27, 2026
| 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) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $2,922,565 (+2%) Land $2,164,864 Building $757,701 | |
| 2025 | $33,481.00 (+20.45%) | $2,865,261 (+21.15%) Land $2,122,416 Building $742,845 |
| 2023 | $27,797.00 (-12.87%) | $2,365,000 Land $1,751,800 Building $613,200 |
| 2022 | $31,903.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
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 |
| 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.
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 Networks Fixed Wireless | 250 / 100 |
| Ridge Wireless Fixed Wireless | 100 / 60 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
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