Alameda County property record for 18530 Carlwyn Dr, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2.5 ba · 2,449 sqft · built 1954 |
| Lot Size | 0.15 acres (6,527 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,100,000 (Sep 2020) |
| Tax Bill | $14,836 (2025) |
| Deeds & Mortgages | Feb 2022 Line of Credit Sep 2020 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84D-1107-20 |
| Primary APN | 84D-1107-20 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 2,449 sqft Living Area |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1977 |
| Architectural Style | L-Shape |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 6,527 sqft (0.15 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 18530 CARLWYN DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-2032 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00010 BLK: 0001 TR: 1222 |
| Legal Tract | 1222 |
| Legal Lot Number | 10 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 430400 |
18530 Carlwyn Dr is owned and occupied by two individuals who bought it in September 2020.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 18530 CARLWYN DR, CASTRO VALLEY, CA 94546-2032 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Feb 17, 2022 | Deed of Trust, Mortgage · Line of Credit PNC BANK NA |
| Sep 22, 2020 | Grant Deed, Transfer · Conventional Mortgage US BANK NA |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 22, 2020 · Amount on File |
| Deed Sale | Sep 22, 2020 · Amount on File |
| Deed Document Number | 2020241228 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 18530 CARLWYN DR, CASTRO VALLEY, CA 94546-2032 |
| Transaction Type | Mortgage |
| Record Updated | Mar 7, 2022 |
| Name | Verified Name |
|---|---|
| Address | 18530 CARLWYN DR, CASTRO VALLEY, CA 94546-2032 |
| Document Number | 0000036758 |
|---|---|
| Date | Feb 17, 2022 |
| Instrument | 2022036758 |
| Name | PNC BANK NA |
|---|---|
| Type | Bank |
| Address | DAYTON, OH 45401 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 480 Months |
| Due | Feb 1, 2062 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Sep 22, 2020 |
| Property Address | 18530 CARLWYN DR, CASTRO VALLEY, CA 94546-2032 |
| Document Number | 0000241228 |
| Map Reference | MB 33 PG 65 |
| Instrument Date | Sep 17, 2020 |
| Instrument | 2020241228 |
| Transaction Type | Transfer |
| Record Updated | Aug 19, 2021 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $1,210.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 18530 CARLWYN DR, CASTRO VALLEY, CA 94546-2032 |
| Document Number | 0000241229 |
|---|---|
| Date | Sep 22, 2020 |
| Instrument | 2020241229 |
| Name | US BANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Oct 1, 2050 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.62% |
| Type Change Date | Oct 1, 2030 |
| Change Frequency | Annually |
| Min Rate At Change | 2.75% |
| Max Rate At Change | 7.62% |
| Index | 1-Year CMT |
| Max Rate | 7.62% |
The 2025 property tax bill for 18530 Carlwyn Dr was $14,836 with a homeowner's exemption.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Castro Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $1,207,465 (+1.41%) Land $364,339 Building $850,126 | ||
| 2025 | $14,836.00 Homeowner's exemption | $1,190,661 Land $357,198 Building $833,463 | |
| 2023 | $14,297.00 Homeowner's exemption | $1,144,440 Land $343,332 Building $801,108 | $1,316,430 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 18530 Carlwyn Dr in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1982.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 2 (1982–2022) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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 risk around 18530 Carlwyn Dr is low, with a 0.01% annual chance of wildfire.
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 | None beyond 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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 606 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Etheric Networks, GeoLinks, Unwired, Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures