The 2025 property tax bill for 2547 Cornerstone Ln was $17,308.
Source: Orange County assessment roll, as of August 4, 2026
Property Jurisdictions
Type
Name
State
California
County
Orange County
Municipality
Costa Mesa City
Unified School District
Newport-Mesa Unified School District (KG - 12)
Tax Bill & Assessment History
Year
Tax Bill
Assessed Value
2026
$1,569,526 (+2%)Land $1,123,418Building $446,108
2025
$17,308.00
$1,538,751Land $1,101,390Building $437,361
2023
$16,484.00 (+82.41%)
$1,479,000Land $1,058,621Building $420,379
2022
$9,037.00
Assessed value is set for property tax purposes and is not a market price estimate.
Flood
FEMA maps place 2547 Cornerstone Ln in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 27, 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
2 in force
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 2547 Cornerstone Ln is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
Wildfire Risk
Low lower than 99.1% of the US · lower than 99.2% of California
Wildfire Likelihood
Under 0.01% 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
MESA WATER DISTRICT serves 110,000 people · EPA ID CA3010004
Water Source
Purchased surface water from several systems
Last State Inspection
Aug 2023
Lead
Under 1 ppb (2024–2026) 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.
Internet Providers
Source: FCC Broadband Data Collection, based on 645 locations within half a mile, as of December 31, 2025
Provider
Max Down / Up (Mbps)
AT&T Fiber · DSL · Fixed Wireless in parts of the area
5,000 / 5,000
Spectrum Cable · Fiber in parts of the area
1,000 / 1,000
Cosmo Network Solutions Fixed Wireless
250 / 100
T-Mobile Fixed Wireless
100 / 20
May also be available: Consolidated Smart Broadband Systems, GeoLinks, Verizon.