Santa Clara County property record for 644 E Duane Ave, Sunnyvale, CA 94085 · Last verified August 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,363 sqft · built 1953 |
| Lot Size | 0.119 acres (5,200 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $16,076 (2025) |
| Deeds & Mortgages | Jul 2026 Line of Credit Oct 2025 Mortgage + 5 more |
| Flood Zone | Zone X (reduced by levee) |
| APN | 205-18-006 |
| Primary APN | 205-18-006 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,363 sqft Living Area |
| 1st Floor Area | 1,363 sqft |
| Family Room | Family Room |
| Year Built | Built 1953 |
|---|---|
| Effective Year Built | Effective 1953 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 5,200 sqft (0.119 acres) |
| Lot Dimensions | 100 ft deep x 52 ft wide |
| Garage Area | 330 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | None |
| Cooling System | None |
|---|
| Street Address | 644 E DUANE AVE |
|---|---|
| City | SUNNYVALE |
| State | CA |
| Zip | 94085-3828 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TRACT 927 FAIR OAKS PARK BOOK 40 PAGE 6 PAGE 7 LOT 134 |
| Legal Subdivision | FAIR OAKS PARK |
| Legal Tract | 927 |
| Legal Lot Number | 134 |
| Jurisdiction | SANTA CLARA CA |
| Township / Civil Division | SAN JOSE |
| Census Block Group | 1 |
| Census Block | 1037 |
| Census Tract | 508708 |
Source: Santa Clara County records · APN 205-18-006
Assessment roll updated July 27, 2026 · Last verified August 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 File |
|---|---|
| Mailing Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Date | Document |
|---|---|
| Jul 23, 2026 | Deed of Trust, Mortgage · Line of Credit US BANK |
| Oct 17, 2025 | Deed of Trust, Mortgage · Conventional Mortgage US BANK NA |
| Apr 24, 2024 | Intrafamily Transfer, Transfer |
| Jul 07, 2021 | Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Aug 10, 2022 | Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Jun 14, 2021 | Intrafamily Transfer, Transfer |
| Nov 16, 2020 | Affidavit of Death, Transfer ATTORNEY ONLY |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Transfer Date | Feb 04, 2025 |
| Transfer Doc | 0025763806 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Recording Date | Jul 23, 2026 |
| Property Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Document Number | 0026027302 |
| Instrument Date | Jul 17, 2026 |
| Instrument | 202626027302 |
| Transaction Type | Mortgage |
| Record Updated | Jul 28, 2026 |
| Title Company | RADIAN SETTLEMENT SERVICES INC, RADIAN SETTLEMENT SERVICES |
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust, 165 |
| Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Document Number | 0026027302, |
|---|---|
| Date | Jul 23, 2026 |
| Instrument | 202626027302 |
| Name | US BANK |
|---|
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jul 26, 2056 |
| Rate | 6.47% |
|---|---|
| Max Rate | -1% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Property Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Transaction Type | Mortgage |
| Record Updated | Oct 28, 2025 |
| Name | Verified Name |
|---|---|
| Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Document Number | 0025885793 |
|---|---|
| Date | Oct 17, 2025 |
| Instrument | 25885793 |
| Name | US BANK NA |
|---|---|
| Type | Bank |
| Address | 2800 TAMARACK RD, OWENSBORO, KY 42301 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Nov 01, 2055 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Recording Date | Apr 24, 2024 |
| Property Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Document Number | 0025627545 |
| Map Reference | MB 40 PGS 6 AND 7 |
| Instrument Date | Apr 17, 2024 |
| Instrument | 25627545 |
| Transaction Type | Transfer |
| Record Updated | May 21, 2024 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Property Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Transaction Type | Mortgage |
| Record Updated | Aug 22, 2023 |
| Title Company | ORABGE COAST TITLE, ORANGE COAST TITLE |
| Name | Verified Name |
|---|---|
| Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Document Number | 0025019834 |
|---|---|
| Date | Jul 07, 2021 |
| Instrument | 25019834 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Aug 01, 2051 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Property Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Transaction Type | Mortgage |
| Record Updated | Aug 22, 2023 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Document Number | 0025356031 |
|---|---|
| Date | Aug 10, 2022 |
| Instrument | 25356031 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Sep 01, 2052 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Recording Date | Jun 14, 2021 |
| Property Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Document Number | 0024994404 |
| Map Reference | MB 40 PG 6&7 |
| Instrument Date | May 19, 2021 |
| Instrument | 24994404 |
| Transaction Type | Transfer |
| Record Updated | Aug 22, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Document Type | Affidavit of Death |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Recording Date | Nov 16, 2020 |
| Property Address | 644 E DUANE AVE, SUNNYVALE, CA 94085-3828 |
| Document Number | 0024704145 |
| Instrument Date | Oct 29, 2020 |
| Instrument | 24704145 |
| Transaction Type | Transfer |
| Record Updated | Nov 25, 2020 |
| Title Company | ATTORNEY ONLY |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 644 E DUANE AVE SUNNYVALE CA 940853828, SUNNYVALE, CA 94085-3828 |
Source: Santa Clara County records · Assessment roll updated July 27, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| County | Santa Clara County |
| Municipality | Sunnyvale City |
| Secondary School District | Fremont Union High School District (09 - 12) |
| Elementary School District | Sunnyvale Elementary School District (KG - 08) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,374,577 (+2%) Land $1,104,080 Building $270,497 | |
| 2025 | $16,076.00 (+5.24%) | $1,347,626 (+4.04%) Land $1,082,432 Building $265,194 |
| 2023 | $15,275.00 (+1.61%) Homeowner's exemption | $1,295,298 Land $1,040,400 Building $254,898 |
| 2022 | $15,033.00 |
Source: FEMA National Flood Hazard Layer, Santa Clara County (06085C), updated January 18, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060855087081, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Reduced by levee depends on levee performance |
| 500-Year Floodplain | No |
| Nearest Special Flood Hazard Area | Zone AO, within 500 ft |
| Flood Insurance Cost | Premium on Record median of 10 individual NFIP policies nearby |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 14 units insured 4 under condo master policies |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
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: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 840 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| AT&T | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 250 |
| Verizon | Fixed Wireless | 300 / 20 |
| Etheric Communications, LLC. | Fixed Wireless (licensed-by-rule) | 250 / 100 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
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