11133 Cornerstone Rd, Riverside, CA 92503 Property Records

Riverside County property record for 11133 Cornerstone Rd, Riverside, CA 92503

Property Summary

Property Type	Single Family Home
Details	2 bd · 1.75 ba · 1,540 sqft · built 2018
Lot Size	0.48 acres (20,909 sqft)
Owner	2 Company Names on File
Last Sale	$70,000 (Oct 2014)
Tax Bill	$6,861 (2025)
Deeds & Mortgages	May 2021 Transfer
Flood Zone	Zone X (minimal risk)
APN	`136-421-001`

Property Details

APN / Parcel Number

Primary APN	`136-421-001`

Interior

Bedrooms	2 Beds
Full Baths	1.75 Baths
Half Baths	1 Half Bath
Stories	1 Story
Building Area	1,540 sqft Living Area
Gross Area	2,362 sqft
1st Floor Area	1,540 sqft

Exterior

Year Built	Built 2018
Effective Year Built	Effective 2018
Construction Type	Wood
Roof Material	Tile
Lot Area	20,909 sqft (0.48 acres)
Garage Type	Attached
Garage Area	465 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Connected

Location & Zoning

Street Address	11133 CORNERSTONE RD
City	RIVERSIDE
State	CA
Zip	92503-0633
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	RA
Legal Description	.48 ACRES M/L IN LOT 23 MB 353/042 TR 28493
Legal Subdivision	TRACT 28493
Legal Tract	28493
Legal Lot Number	23
Jurisdiction	RIVERSIDE CA
Township / Civil Division	CORONA
Census Block Group	2
Census Block	2001
Census Tract	41414

Owner

Source: Riverside County records · APN 136-421-001

Assessment roll updated July 29, 2026 · Last verified August 2026

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

Owner of Record	2 Company Names on File
Mailing Address	11133 CORNERSTONE RD, RIVERSIDE, CA 92503-0633
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Living Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Oct 29, 2014 · Amount on Record
Deed Sale	Oct 29, 2014 · Amount on Record
Deed Document Number	2014411589
Last Transfer Date	Dec 21, 2020
Transfer Doc	0000307971
Record Updated	Sep 20, 2026

May 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	RIVERSIDE CA
Recording Date	May 19, 2021
Property Address	11133 CORNERSTONE RD, RIVERSIDE, CA 92503-0633
Document Number	0000307971
Map Reference	MB 353 PG 042
Instrument Date	Dec 21, 2020
Instrument	2021-0307971
Transaction Type	Transfer
Record Updated	Jun 07, 2023

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	Living Trust
Address	11133 CORNERSTONE RD, RIVERSIDE, CA 92503-0633

Tax Assessment & Valuation

Source: Riverside County records · Assessment roll updated July 29, 2026 · Last verified August 2026

Property Jurisdictions

Type	Name
State	California
County	Riverside County
Unified School District	Alvord Unified School District (KG - 12)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$364,682 (+2%) Land $85,806 Building $278,876
2025	$6,861.00 (+3.62%) Homeowner's exemption	$357,532 (+4.04%) Land $84,124 Building $273,408
2023	$6,621.00 (+4.35%) Homeowner's exemption	$343,651 Land $80,858 Building $262,793
2022	$6,345.00
2021			$609,300

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of October 14, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	1 in force

Wildfire

Wildfire Risk	Low lower than 96% of the US · lower than 97.4% of California
Wildfire Likelihood	0.02% annual chance
Exposure	None beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000
AT&T DSL	100 / 20

May also be available: Verizon.

Based on FCC filings for 315 locations within half a mile of this property.

Cell Coverage

5G (outdoors only) and 4G LTE

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	CITY OF RIVERSIDE serves 302,776 people
Water Source	Groundwater influenced by surface water
Lead	1 ppb (2023–2025) 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.