5849 Alderbrook Ct, Castro Valley, CA 94552 Property Records

Alameda County property record for 5849 Alderbrook Ct, Castro Valley, CA 94552

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 2,499 sqft · built 1984
Lot Size	0.198 acres (8,610 sqft)
Owner	Trust Name on File
Last Sale	$405,000 (Aug 1999)
Tax Bill	$8,610 (2025)
Deeds & Mortgages	Jun 2021 Line of Credit Dec 2020 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`85-6309-23`

Property Details

APN / Parcel Number

Primary APN	`85-6309-23`
Alternative APN	`085-6309-023-00`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	9 Rooms
Stories	2 Stories
Building Area	2,499 sqft Living Area

Exterior

Year Built	Built 1984
Effective Year Built	Effective 1992
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	8,610 sqft (0.198 acres)
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	5849 ALDERBROOK CT
City	CASTRO VALLEY
State	CA
Zip	94552-1748
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00080 BLK: TR: 3983
Legal Tract	3983
Legal Lot Number	80
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	1
Census Block	1001
Census Tract	430200

Owner

5849 Alderbrook Ct is owner-occupied and held in a trust since December 2020.

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

Owner of Record	Trust Name on File
Mailing Address	5849 ALDERBROOK CT, CASTRO VALLEY, CA 94552-1748
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

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
Jun 17, 2021	Deed of Trust, Mortgage · Line of Credit STANFORD FCU
Dec 8, 2020	Quit Claim Deed, Transfer OLD REPUBLIC TITLE
Dec 8, 2020	Intrafamily Transfer, Transfer · Conventional Mortgage QUICKEN LOANS LLC

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 19, 1999 · Amount on File
Deed Sale	Aug 19, 1999 · Amount on File
Deed Document Number	1999318314
Last Transfer Date	Dec 2, 2020
Transfer Doc	0000340757
Record Updated	Oct 29, 2026

June 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	5849 ALDERBROOK CT, CASTRO VALLEY, CA 94552-1748
Transaction Type	Mortgage
Record Updated	Sep 28, 2023

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	5849 ALDERBROOK CT, CASTRO VALLEY, CA 94552-1748
Investor	Possibly a Property Investor

Mortgage

Document Number	0000219890
Date	Jun 17, 2021
Instrument	2021219890

Lender

Name	STANFORD FCU
Type	Credit Union
Address	PALO ALTO, CA 94303

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	239 Months
Due	May 14, 2041

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

December 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ALAMEDA CA
Recording Date	Dec 8, 2020
Property Address	5849 ALDERBROOK CT, CASTRO VALLEY, CA 94552-1748
Document Number	0000340757
Instrument Date	Oct 30, 2020
Instrument	340757
Transaction Type	Transfer
Record Updated	Feb 15, 2021
Title Company	OLD REPUBLIC TITLE

Transaction

Tax	$0.00
Amount Accuracy	Full Value
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	5849 ALDERBROOK CT CASTRO VALLEY CA 945521748, CASTRO VALLEY, CA 94552-1748

December 2020: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Dec 8, 2020
Property Address	5849 ALDERBROOK CT, CASTRO VALLEY, CA 94552-1748
Document Number	0000340755
Map Reference	MB 115 PG 1
Instrument Date	Oct 30, 2020
Instrument	2020340755
Transaction Type	Transfer
Record Updated	Aug 19, 2021
Title Company	OLD REPUBLIC TITLE COMPANY

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
Address	5849 ALDERBROOK CT, CASTRO VALLEY, CA 94552-1748
Investor	Possibly a Property Investor

Mortgage

Document Number	0000340756
Date	Dec 8, 2020
Instrument	2020340756

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Dec 1, 2050

Tax Assessment & Valuation

The 2025 property tax bill for 5849 Alderbrook Ct was $8,610 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	Castro Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$669,317 (+0.94%) Land $190,465 Building $485,852
2025	$8,610.00 Homeowner's exemption	$663,059 Land $186,732 Building $476,327
2023	$8,277.00 Homeowner's exemption	$637,316 Land $179,482 Building $457,834	$1,556,730

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

Flood

FEMA maps place 5849 Alderbrook Ct 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 5849 Alderbrook Ct is high, ranking above 72% of the US, with a 0.3% annual chance of wildfire.

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

Wildfire Risk	High above 72% of the US · above 47% of California
Wildfire Likelihood	0.3% 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 208 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
Starlink Satellite	280 / 30
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Unwired.

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