817 MARIPOSA RD LAFAYETTE CA 945494210, LAFAYETTE, CA 94549-4210
May 2017: Intrafamily Transfer, Transfer
Document Type
Intrafamily Transfer
Jurisdiction
CONTRA COSTA CA
Recording Date
May 31, 2017
Property Address
817 MARIPOSA RD, LAFAYETTE, CA 94549-4210
Document Number
0000096144
Map Reference
MAP22 PG675
Instrument Date
May 26, 2017
Instrument
2017-096144
Transaction Type
Transfer
Record Updated
Nov 3, 2022
Title Company
CHICAGO 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
817 MARIPOSA RD, LAFAYETTE, CA 94549-4210
Mortgage
Document Number
0000096145
Date
May 31, 2017
Instrument
2017-096145
Lender
Name
RPM MORTGAGE INC
Type
Mortgage Company
Agreement
Type
ARM
Amount
Amount on Record
Term
361 Months
Due
Jun 1, 2047
Interest
Rate Type
Adjustable Rate
Rate
5.25%
Type Change Date
Jun 1, 2022
Change Frequency
Annually
Min Rate At Change
5.25%
Max Rate At Change
7.25%
Index
1-Year LIBOR
Max Rate
10.2%
Tax Assessment & Valuation
The 2025 property tax bill for 817 Mariposa Rd was $11,846.
Source: Contra Costa County assessment roll, as of July 14, 2026
Property Jurisdictions
Type
Name
State
California
County
Contra Costa County
Municipality
Lafayette City
Secondary School District
Acalanes Union High School District (09 - 12)
Elementary School District
Lafayette Elementary School District (KG - 08)
Tax Bill & Assessment History
Year
Tax Bill
Assessed Value
2026
$916,580 (+2%)Land $756,973Building $159,607
2025
$11,846.00Homeowner's exemption
$898,609Land $742,131Building $156,478
2023
$11,430.00 (+1.57%)Homeowner's exemption
$863,716Land $713,314Building $150,402
2022
$11,253.00
Assessed value is set for property tax purposes and is not a market price estimate.
Flood
FEMA maps place 817 Mariposa Rd in Zone X, an area of minimal flood risk, though there have been 6 flood claims nearby since 1983.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
FEMA Flood Zone
Zone X minimal risk
Flood Insurance Requirement
Not required lenders may require it
Nearby Flood Policies
4 in force
Nearby Flood Claims
6 (1983–1998)
Claims Outside the SFHA
4 of 6
Most Recent Claim
Feb 1998 · Severe Winter Storms And Flooding
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
Wildfire risk around 817 Mariposa Rd is moderate, ranking above 51% 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 51% of the US · lower than 70% of California
Wildfire Likelihood
0.1% annual chance
Exposure
None beyond 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 275 locations within half a mile, as of December 31, 2025
Provider
Max Down / Up (Mbps)
Xfinity Cable
2,000 / 250
Unwired Fixed Wireless
300 / 25
AT&T DSL · Fiber in parts of the area
100 / 20
May also be available: Etheric Networks, T-Mobile, Verizon.