Orange County property record for 604 Knowell Pl, Costa Mesa, CA 92627
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,687 sqft · built 1954 |
| Lot Size | 0.139 acres (6,032 sqft) |
| Owner | Individual Name on File |
| Last Sale | $120,000 (Dec 2014) |
| Tax Bill | $2,528 (2025) |
| Deeds & Mortgages | Oct 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 422-131-23 |
| Primary APN | 422-131-23 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,687 sqft Living Area |
| 1st Floor Area | 1,687 sqft |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1954 |
| Lot Area | 6,032 sqft (0.139 acres) |
| Garage Area | 360 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | HVAC |
|---|
| Street Address | 604 KNOWELL PL |
|---|---|
| City | COSTA MESA |
| State | CA |
| Zip | 92627-2623 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | N TR 2168 BLK LOT 6 |
| Legal Subdivision | TRACT NO 2168 |
| Legal Tract | 2168 |
| Legal Lot Number | 6 |
| Jurisdiction | ORANGE CA |
| Township / Civil Division | CENTRAL COAST |
| Census Block Group | 4 |
| Census Block | 4000 |
| Census Tract | 63702 |
604 Knowell Pl is owned and occupied by an individual who bought it in December 2014.
Source: Orange County records, as of August 4, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 604 KNOWELL PL, COSTA MESA, CA 92627-2623 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Sole Owner |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Dec 22, 2014 · Amount on File |
| Deed Sale | Dec 22, 2014 · Amount on File |
| Deed Document Number | 2014551653 |
| Prior Transfer Date | Dec 12, 1996 |
| Prior Transfer Doc | 0000655303 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ORANGE CA |
| Recording Date | Oct 6, 2020 |
| Property Address | 604 KNOWELL PL, COSTA MESA, CA 92627-2623 |
| Document Number | 0000551420 |
| Map Reference | MB 62 PG 19 |
| Instrument Date | Sep 14, 2020 |
| Instrument | 2020000551420 |
| Transaction Type | Transfer |
| Record Updated | Sep 14, 2021 |
| Title Company | ORANGE COAST TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 604 KNOWELL PL, COSTA MESA, CA 92627-2623 |
| Document Number | 0000551421 |
|---|---|
| Date | Oct 6, 2020 |
| Instrument | 2020000551421 |
| Name | OWNING CORPORATION |
|---|---|
| Type | Non-Lending Institution |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Oct 1, 2050 |
The 2025 property tax bill for 604 Knowell Pl was $2,528 with a homeowner's exemption.
Source: Orange County assessment roll, as of August 4, 2026
| Type | Name |
|---|---|
| State | California |
| County | Orange County |
| Municipality | Costa Mesa City |
| Unified School District | Newport-Mesa Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $147,289 (+2%) Land $27,717 Building $119,572 | |
| 2025 | $2,528.00 Homeowner's exemption | $144,401 Land $27,173 Building $117,228 |
| 2023 | $2,300.00 (+6.98%) Homeowner's exemption | $138,795 Land $26,118 Building $112,677 |
| 2022 | $2,150.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 604 Knowell Pl in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1997.
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 |
| Nearby Flood Claims | 1 (1997) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Dec 1997 · rainfall accumulation |
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.
The area around 604 Knowell Pl has no burnable land within ember reach, so its wildfire risk is not rated.
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.
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 |
| 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.
Source: FCC Broadband Data Collection, based on 769 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Cosmo Network Solutions, GeoLinks, T-Mobile.
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