San Diego County property record for 3901 Grandon Ave, San Marcos, CA 92078
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,232 sqft · built 1961 |
| Lot Size | 0.138 acres (6,000 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $119,500 (Dec 1995) |
| Tax Bill | $3,403 (2025) |
| Deeds & Mortgages | Feb 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 219-322-06-00 |
| Primary APN | 219-322-06-00 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,232 sqft Living Area |
| Year Built | Built 1961 |
|---|---|
| Effective Year Built | Effective 1961 |
| Exterior Material | Stucco |
| Roof Material | Gravel |
| Lot Area | 6,000 sqft (0.138 acres) |
| Lot Dimensions | 100 ft deep x 60 ft wide |
| Garage Type | Carport |
| Carport | Carport |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Old Parcel Number | 2193220500 |
|---|---|
| Street Address | 3901 GRANDON AVE |
| City | SAN MARCOS |
| State | CA |
| Zip | 92078-3606 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R-1-7.5 |
| Legal Description | LOT 35 (EX ST OP) TR 004464 |
| Legal Subdivision | GRANDON ESTATES |
| Legal Tract | 004464 |
| Legal Block | 2 |
| Legal Lot Number | 35 |
| Jurisdiction | SAN DIEGO CA |
| Township / Civil Division | OCEANSIDE-ESCONDIDO |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 20019 |
3901 Grandon Ave is owned and occupied by two individuals who bought it in December 1995.
Source: San Diego County records, as of July 28, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3901 GRANDON AVE, SAN MARCOS, CA 92078-3606 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Dec 29, 1995 · Amount on File |
| Deed Sale | Dec 29, 1995 · Amount on File |
| Deed Document Number | 1995598800 |
| Prior Transfer Date | Aug 18, 1993 |
| Prior Transfer Doc | 0000565554 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN DIEGO CA |
| Recording Date | Feb 9, 2021 |
| Property Address | 3901 GRANDON AVE, SAN MARCOS, CA 92078-3606 |
| Document Number | 0000098334 |
| Map Reference | MAP 4464 |
| Instrument Date | Jan 19, 2021 |
| Instrument | 2021-0098334 |
| Transaction Type | Transfer |
| Record Updated | Aug 24, 2021 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 3901 GRANDON AVE, SAN MARCOS, CA 92078-3606 |
The 2025 property tax bill for 3901 Grandon Ave was $3,403.
Source: San Diego County assessment roll, as of July 28, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Diego County |
| Municipality | San Marcos City |
| Unified School District | San Marcos Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $300,621 (+2%) Land $155,350 Building $145,271 | |
| 2025 | $3,403.00 | $294,727 Land $152,304 Building $142,423 |
| 2023 | $3,164.00 (+1.38%) | $283,285 Land $146,391 Building $136,894 |
| 2022 | $3,121.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 3901 Grandon Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1982.
Source: FEMA National Flood Hazard Layer, effective September 3, 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 Claims | 1 (1982) |
| Most Recent Claim | Mar 1982 · 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 3901 Grandon Ave 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 | VALLECITOS WD serves 114,700 people · EPA ID CA3710002 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Mar 2022 |
| 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 | 1 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 795 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Cox Communications Cable | 2,000 / 100 |
| Starlink Satellite | 280 / 30 |
May also be available: AT&T, San Diego Broadband, Spectrum, T-Mobile, Verizon.
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