Alameda County property record for 4048 Marsten Ave, Union City, CA 94587
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,612 sqft · built 1957 |
| Lot Size | 0.166 acres (7,245 sqft) |
| Owner | Company Name on Record |
| Last Sale | $84,000 (Sep 2000) |
| Tax Bill | $6,783 (2025) |
| Deeds & Mortgages | Jul 2026 Line of Credit May 2021 Mortgage + 2 more |
| Flood Zone | Zone AE (high risk) |
| APN | 482-30-38-1 |
| Primary APN | 482-30-38-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,612 sqft Living Area |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1960 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 7,245 sqft (0.166 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 4048 MARSTEN AVE |
|---|---|
| City | UNION CITY |
| State | CA |
| Zip | 94587-2505 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00001 BLK: 0038 AR: 0482 PAGE: 0030 ;LOT: 0000B BLK: TR: 6071 |
| Legal Subdivision | TRACT 6071 |
| Legal Tract | 6071 |
| Legal Lot Number | B |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 440331 |
Source: Alameda County records, as of September 1, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 5651 COLD WATER DR, CASTRO VALLEY, CA 94552-2641 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Jul 14, 2026 | Deed of Trust, Mortgage · Line of Credit CHICAGO TITLE W, CHICAGO TITLE |
| May 19, 2021 | Deed of Trust, Mortgage · Conventional Mortgage HOME POINT FINANCIAL CORPORATION |
| Nov 25, 2019 | Deed of Trust, Mortgage · Conventional Mortgage LOANDEPOT.COM LLC |
| Jan 10, 2017 | Deed of Trust, Mortgage · Conventional Mortgage FREMONT BK |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 6, 2000 · Amount on Record |
| Deed Sale | Sep 6, 2000 · Amount on Record |
| Prior Sale | Jan 13, 1999 · Amount on Record |
| Deed Document Number | 2000268779 |
| Last Transfer Date | Jun 25, 2004 |
| Transfer Doc | 0000305293 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jul 14, 2026 |
| Property Address | 4048 MARSTEN AVE, UNION CITY, CA 94587-2505 |
| Document Number | 0000091093 |
| Instrument Date | Jul 7, 2026 |
| Instrument | 202691093 |
| Transaction Type | Mortgage |
| Record Updated | Sep 9, 2026 |
| Title Company | CHICAGO TITLE W, CHICAGO TITLE |
| Name | Verified Name |
|---|---|
| Relationship | Family Trust, 221 |
| Address | 4048 MARSTEN AVE, UNION CITY, CA 94587-2505 |
| Document Number | 0000091093, |
|---|---|
| Date | Jul 14, 2026 |
| Instrument | 202691093 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Aug 1, 2056 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6.38% |
| Initial Type | Adjustable Rate |
| Adjustable | Adjustable Rate Rider |
| Max Rate | -1% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 4048 MARSTEN AVE, UNION CITY, CA 94587-2505 |
| Transaction Type | Mortgage |
| Record Updated | Jan 28, 2022 |
| Name | Verified Name |
|---|---|
| Address | 4048 MARSTEN AVE, UNION CITY, CA 94587-2505 |
| Document Number | 0000189304 |
|---|---|
| Date | May 19, 2021 |
| Instrument | 2021189304 |
| Name | HOME POINT FINANCIAL CORPORATION |
|---|---|
| Type | Mortgage Company |
| Address | PARSIPPANY, NJ 07054 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jun 1, 2051 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 4048 MARSTEN AVE, UNION CITY, CA 94587-2505 |
| Document Number | 0000246334 |
| Instrument Date | Nov 25, 2019 |
| Transaction Type | Mortgage |
| Record Updated | Jan 14, 2020 |
| Title Company | OLD REPUBLIC TITLE |
| Name | Verified Name |
|---|---|
| Address | 4048 MARSTEN AVE UNION CITY CA 945872505, UNION CITY, CA 94587-2505 |
| Document Number | 0000246334 |
|---|---|
| Date | Dec 2, 2019 |
| Instrument | 246334 |
| Name | LOANDEPOT.COM LLC |
|---|---|
| Type | Funding / Finance Company |
| Address | FOOTHILL RANCH, CA 92610 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Dec 1, 2049 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 4048 MARSTEN AVE, UNION CITY, CA 94587-2505 |
| Document Number | 0000012641 |
| Instrument Date | Jan 10, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Feb 7, 2017 |
| Title Company | OLD REPUBLIC TITLE |
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 4048 MARSTEN AVE UNION CITY CA 945872505, UNION CITY, CA 94587-2505 |
| Document Number | 0000012641 |
|---|---|
| Date | Jan 18, 2017 |
| Instrument | 12641 |
| Name | FREMONT BK |
|---|---|
| Type | Bank |
| Address | LIVERMORE, CA 94551 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jan 17, 2047 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Union City |
| Unified School District | New Haven Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $472,723 (+0.51%) Land $143,917 Building $335,806 | ||
| 2025 | $6,783.00 (-2.7%) Homeowner's exemption | $470,319 (+4.04%) Land $141,096 Building $329,223 | |
| 2023 | $6,971.00 Homeowner's exemption | $452,059 Land $135,618 Building $316,441 | $1,116,090 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | 10.0 ft |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on Record median of 23 individual policies |
| Nearby Flood Policies | 25 units insured incl. 2 condo units |
| Nearby Flood Claims | 1 (1986) |
| Most Recent Claim | Mar 1986 · Severe Storms & Flooding |
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 | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Indirect 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 | ALAMEDA COUNTY WATER DISTRICT serves 344,000 people · EPA ID CA0110001 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Nov 2025 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None 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 621 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| RobinsonHSS Fixed Wireless | 1,000 / 1,000 |
| Tekify Fiber & Wireless Fixed Wireless | 570 / 120 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
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