1818 Knox St, Castro Valley, CA 94546 Property Records

Alameda County property record for 1818 Knox St, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	2 bd · 2 ba · 1,224 sqft · built 1948
Lot Size	0.092 acres (4,000 sqft)
Owner	2 Individual Names on File
Last Sale	$830,000 (Jul 2023)
Tax Bill	$10,963 (2025)
Deeds & Mortgages	Jul 2023 Sale & Mortgage Sep 2019 Mortgage + 2 more
Flood Zone	Zone AE (high risk)
APN	`415-100-115`

Property Details

APN / Parcel Number

Primary APN	`415-100-115`
Alternative APN	`415-0100-115-00`

Interior

Bedrooms	2 Beds
Full Baths	2 Baths
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,224 sqft Living Area

Exterior

Year Built	Built 1948
Effective Year Built	Effective 1948
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	4,000 sqft (0.092 acres)
Garage Type	Carport
Carport	Carport

Location & Zoning

Street Address	1818 KNOX ST
City	CASTRO VALLEY
State	CA
Zip	94546-7032
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00115 BLK: AR: 0415 PAGE: 0100
Legal Subdivision	KNOX
Legal Block	B
Legal Lot Number	15
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	1
Census Block	1011
Census Tract	431200

Owner

1818 Knox St is owned and occupied by two individuals who bought it in July 2023.

Source: Alameda County records, as of August 5, 2026

Owner of Record	2 Individual Names on File
Mailing Address	1818 KNOX ST, CASTRO VALLEY, CA 94546-7032
Occupancy	Owner Occupied
Owner Type	Individual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Jul 10, 2023	Grant Deed, Transfer · Conventional Mortgage CITIBANK NA
Sep 19, 2019	Deed of Trust, Mortgage · Conventional Mortgage MOUNTAIN WEST FINANCIAL INC
Jan 12, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage HOME POINT FINANCIAL CORPORATION
Aug 21, 2017	Grant Deed, Transfer · Conventional Mortgage MOUNTAIN WEST FINANCIAL INC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 10, 2023 · Amount on File
Deed Sale	Jul 10, 2023 · Amount on File
Prior Sale	Aug 21, 2017 · Amount on File
Deed Document Number	202377537
Prior Transfer Date	Jun 16, 1997
Prior Transfer Doc	0000170762
Record Updated	Oct 29, 2026

July 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Jul 10, 2023
Property Address	1818 KNOX ST, CASTRO VALLEY, CA 94546-7032
Document Number	0000077537
Map Reference	MB 17 PG 87
Instrument Date	Jul 5, 2023
Instrument	2023077537
Transaction Type	Transfer
Record Updated	Aug 14, 2023
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	1818 KNOX ST, CASTRO VALLEY, CA 94546-7032

Mortgage

Document Number	0000077538
Date	Jul 10, 2023
Instrument	2023077538

Lender

Name	CITIBANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Aug 1, 2053

September 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	1818 KNOX ST, CASTRO VALLEY, CA 94546-7032
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIRST AMERICAN TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000187756
Date	Sep 19, 2019
Instrument	2019187756

Lender

Name	MOUNTAIN WEST FINANCIAL INC
Type	Funding / Finance Company
Address	REDLANDS, CA 92374

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Oct 1, 2049

January 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Jan 12, 2021
Property Address	1818 KNOX ST, CASTRO VALLEY, CA 94546-7032
Document Number	0000013320
Map Reference	MB 17 PG 87
Instrument Date	Dec 28, 2020
Instrument	2021013320
Transaction Type	Transfer
Record Updated	Aug 19, 2021
Title Company	STEWART TITLE GUARANTY CO

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	1818 KNOX ST, CASTRO VALLEY, CA 94546-7032

Mortgage

Document Number	0000013321
Date	Jan 12, 2021
Instrument	2021013321

Lender

Name	HOME POINT FINANCIAL CORPORATION
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Jan 1, 2051

August 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Aug 21, 2017
Property Address	1818 KNOX ST, CASTRO VALLEY, CA 94546-7032
Document Number	0000182788
Map Reference	MB17 PG87
Instrument Date	Aug 11, 2017
Instrument	2017182788
Transaction Type	Transfer
Record Updated	Aug 19, 2021
Title Company	OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Notice of Default Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1818 KNOX ST, CASTRO VALLEY, CA 94546-7032

Mortgage

Document Number	0000182789
Date	Aug 21, 2017
Instrument	2017182789

Lender

Name	MOUNTAIN WEST FINANCIAL INC
Type	Funding / Finance Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Sep 1, 2047

Tax Assessment & Valuation

The 2025 property tax bill for 1818 Knox St was $10,963 with a homeowner's exemption.

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

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$856,532 (+1.17%) Land $260,100 Building $603,432
2025	$10,963.00 Homeowner's exemption	$846,600 Land $255,000 Building $591,600
2023	$9,543.00 (+2.27%) Homeowner's exemption	$732,731 (+2%) Land $219,819 Building $512,912	$729,810
2022	$9,331.00 Homeowner's exemption	$718,367 Land $215,510 Building $502,857

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA maps place 1818 Knox St in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.

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	Varies along the reach; see FIRM
Flood Insurance Requirement	Required federally backed loans
Flood Insurance Cost	Premium on File median of 15 policies
Community Rating System	Class 7 (15% premium discount)
Nearby Flood Policies	15 in force
Nearby Flood Claims	1 (1996)
Most Recent Claim	Dec 1996 · rainfall accumulation

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

The area around 1818 Knox St has no burnable land within ember reach, so its wildfire risk is not rated.

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.

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 744 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 · Fixed Wireless, DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks.

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