17198 Roberto St, Castro Valley, CA 94546 Property Records

Alameda County property record for 17198 Roberto St, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 906 sqft · built 1957
Lot Size	0.131 acres (5,684 sqft)
Owner	Individual Name on Record
Last Sale	$663,000 (Aug 2023)
Tax Bill	$8,943 (2025)
Deeds & Mortgages	Aug 2023 Sale & Mortgage Dec 2022 Transfer
Flood Zone	Zone X (minimal risk)
APN	`80A-234-17`

Property Details

APN / Parcel Number

Primary APN	`80A-234-17`
Alternative APN	`080A-0234-017-00`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	4 Rooms
Stories	1 Story
Building Area	906 sqft Living Area

Exterior

Year Built	Built 1957
Effective Year Built	Effective 1959
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	5,684 sqft (0.131 acres)
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	17198 ROBERTO ST
City	CASTRO VALLEY
State	CA
Zip	94546-3849
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00017 BLK: AR: 080A PAGE: 0234
Legal Subdivision	EL PORTAL
Legal Lot Number	516
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	3
Census Block	3018
Census Tract	430500

Owner

Source: Alameda County records, as of September 18, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on Record
Mailing Address	17198 ROBERTO ST, CASTRO VALLEY, CA 94546-3849
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Aug 11, 2023	Grant Deed, Transfer · Conventional Mortgage RESICENTRAL LLC
Dec 23, 2022	Quit Claim Deed, Transfer Quitclaim

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 11, 2023 · Amount on Record
Deed Sale	Aug 11, 2023 · Amount on Record
Deed Document Number	202391613
Prior Transfer Date	Dec 21, 2022
Prior Transfer Doc	0000201555
Record Updated	Oct 29, 2026

August 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Aug 11, 2023
Property Address	17198 ROBERTO ST, CASTRO VALLEY, CA 94546-3849
Document Number	0000091613
Map Reference	MB 8 PG 76&77
Instrument Date	Aug 9, 2023
Instrument	2023091613
Transaction Type	Transfer
Record Updated	Sep 5, 2023
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$729.30
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	17198 ROBERTO ST, CASTRO VALLEY, CA 94546-3849

Mortgage

Document Number	0000091614
Date	Aug 11, 2023
Instrument	2023091614

Lender

Name	RESICENTRAL LLC
Type	Non-Lending Institution

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2053

December 2022: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ALAMEDA CA
Recording Date	Dec 23, 2022
Property Address	17198 ROBERTO ST, CASTRO VALLEY, CA 94546-3849
Document Number	0000201555
Map Reference	MB 8 PG 76&77
Instrument Date	Dec 21, 2022
Instrument	2022201555
Transaction Type	Transfer
Record Updated	Jan 20, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	22145 MONTGOMERY ST, HAYWARD, CA 94541-3939

Tax Assessment & Valuation

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

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$689,784 (+2%) Land $206,935 Building $482,849
2025	$8,943.00 (+5.68%)	$676,260 (+6.16%) Land $202,878 Building $473,382
2023	$8,462.00 (+287.81%)	$637,000 (+451.76%) Land $191,100 Building $445,900	$582,030
2022	$2,182.00	$115,448 Land $64,364 Building $51,084

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

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

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 796 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

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

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