18081 Columbia Dr, Castro Valley, CA 94552 Property Records

Alameda County property record for 18081 Columbia Dr, Castro Valley, CA 94552

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 2,646 sqft · built 1980
Lot Size	0.263 acres (11,469 sqft)
Owner	2 Individual Names on File
Last Sale	$1,550,000 (Oct 2025)
Tax Bill	$9,030 (2025)
Deeds & Mortgages	Oct 2025 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`85-6308-16`

Property Details

APN / Parcel Number

Primary APN	`85-6308-16`
Alternative APN	`085-6308-016-00`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,646 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1980
Effective Year Built	Effective 1985
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	11,469 sqft (0.263 acres)
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Street Address	18081 COLUMBIA DR
City	CASTRO VALLEY
State	CA
Zip	94552-1744
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00002 BLK: TR: 3983
Legal Subdivision	TR 3983
Legal Tract	3983
Legal Lot Number	2
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	1
Census Block	1001
Census Tract	430200

Owner

18081 Columbia Dr is owned and occupied by two individuals who bought it in October 2025.

Source: Alameda County records, as of August 5, 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	2 Individual Names on File
Mailing Address	18081 COLUMBIA DR, CASTRO VALLEY, CA 94552-1744
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Oct 27, 2025 · Amount on File
Deed Sale	Oct 27, 2025 · Amount on File
Deed Document Number	2025134592
Prior Transfer Date	Jan 7, 2011
Prior Transfer Doc	0000022552
Record Updated	Oct 29, 2026

October 2025: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Oct 27, 2025
Property Address	18081 COLUMBIA DR, CASTRO VALLEY, CA 94552-1744
Document Number	0000134592
Map Reference	MB 115 PG 1
Instrument Date	Oct 16, 2025
Instrument	2025134592
Transaction Type	Transfer
Record Updated	Dec 1, 2025
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,705.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Right of Survivorship
Address	18081 COLUMBIA DR, CASTRO VALLEY, CA 94552-1744

Mortgage

Document Number	0000134593
Date	Oct 27, 2025
Instrument	2025134593

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Nov 1, 2055

Interest

Rate Type	Adjustable Rate
Rate	5.5%
Adjustable	Adjustable Rate Rider
Type Change Date	Nov 1, 2032
Change Frequency	6 Months
Min Rate At Change	3.5%
Max Rate At Change	7.5%
Index	Other
Max Rate	10.5%

Tax Assessment & Valuation

The 2025 property tax bill for 18081 Columbia Dr was $9,030.

Source: Alameda County assessment roll, as of August 5, 2026

Property Jurisdictions

Type	Name
State	California
County	Alameda County
Unified School District	Castro Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$1,543,000 (+120.88%) Land $465,000 Building $1,085,000
2025	$9,030.00 Homeowner's exemption	$698,579 Land $196,279 Building $502,300
2023	$8,683.00 Homeowner's exemption	$671,454 Land $188,657 Building $482,797	$1,619,280

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

FEMA maps place 18081 Columbia Dr in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective May 25, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Wildfire risk around 18081 Columbia Dr is moderate, ranking above 53% of the US, with a 0.1% annual chance of wildfire.

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

Wildfire Risk	Moderate above 53% of the US · lower than 68% of California
Wildfire Likelihood	0.1% annual chance
Exposure	Direct burnable vegetation

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

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

Violations Reported to EPA

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.

Internet Providers

Source: FCC Broadband Data Collection, based on 412 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Sonic Telecom Fiber	10,000 / 10,000
AT&T Fiber · DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20

May also be available: Etheric Networks, T-Mobile.

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