Sonoma County property record for 309 Sejong Ln, Santa Rosa, CA 95403
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,434 sqft · built 2017 |
| Lot Size | 0.063 acres (2,757 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $600,000 (Aug 2021) |
| Tax Bill | $8,889 (2025) |
| Deeds & Mortgages | Aug 2021 Sale & Mortgage May 2020 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 058-171-057-000 |
| Primary APN | 058-171-057-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 5 Rooms |
| Building Area | 1,434 sqft Living Area |
| Gross Area | 1,684 sqft |
| Year Built | Built 2017 |
|---|---|
| Effective Year Built | Effective 2018 |
| Lot Area | 2,757 sqft (0.063 acres) |
| Garage Type | Attached |
| Garage Area | 250 sqft |
| Parking Spaces | 1 Parking Space |
| Old Parcel Number | 058-171-057 |
|---|---|
| Street Address | 309 SEJONG LN |
| City | SANTA ROSA |
| State | CA |
| Zip | 95403-1674 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | 2017 MARK WEST VILLAGE LOT 6 |
| Legal Subdivision | MARK WEST VILLAGE |
| Legal Block | 2 |
| Legal Lot Number | 6 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SANTA ROSA |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 152702 |
309 Sejong Ln is owned and occupied by two individuals who bought it in August 2021.
Source: Sonoma County records, as of September 1, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 309 SEJONG LN, SANTA ROSA, CA 95403-1674 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Date | Document |
|---|---|
| Aug 31, 2021 | Grant Deed, Transfer · Conventional Mortgage GUARANTEED RATE INC |
| May 11, 2020 | Deed of Trust, Mortgage · VA Mortgage NORTHPOINTE BANK |
| May 31, 2019 | Grant Deed, Transfer · VA Mortgage GUARANTEED RATE AFFINITY LLC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 31, 2021 · Amount on File |
| Deed Sale | Aug 31, 2021 · Amount on File |
| Prior Sale | May 31, 2019 · Amount on File |
| Deed Document Number | 202199110 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Aug 31, 2021 |
| Property Address | 309 SEJONG LN, SANTA ROSA, CA 95403-1674 |
| Document Number | 0000099110 |
| Map Reference | MB 783 PG 8-14 |
| Instrument Date | Aug 27, 2021 |
| Instrument | 2021099110 |
| Transaction Type | Transfer |
| Record Updated | Aug 17, 2023 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $660.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 309 SEJONG LN, SANTA ROSA, CA 95403-1674 |
| Document Number | 0000099111 |
|---|---|
| Date | Aug 31, 2021 |
| Instrument | 2021099111 |
| Name | GUARANTEED RATE INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Sep 1, 2051 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SONOMA CA |
| Property Address | 309 SEJONG LN, SANTA ROSA, CA 95403-1674 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | PREMIUM TITLE CALIFORNIA INC |
| Name | Verified Name |
|---|
| Document Number | 0000035402 |
|---|---|
| Date | May 11, 2020 |
| Instrument | 2020035402 |
| Name | NORTHPOINTE BANK |
|---|---|
| Type | Bank |
| Address | GRAND RAPIDS, MI 49546 |
| Type | VA Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jun 1, 2050 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | May 31, 2019 |
| Property Address | 309 SEJONG LN, SANTA ROSA, CA 95403-1674 |
| Document Number | 0000036727 |
| Map Reference | MB 783 PG 8-14 |
| Instrument Date | Apr 3, 2019 |
| Instrument | 2019036727 |
| Transaction Type | Transfer |
| Record Updated | Aug 19, 2021 |
| Title Company | NORTH AMER TTL CA PLEASANTIO |
| Amount | Amount on Record |
|---|---|
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 309 SEJONG LN, SANTA ROSA, CA 95403-1674 |
| Document Number | 0000036728 |
|---|---|
| Date | May 31, 2019 |
| Instrument | 2019036728 |
| Name | GUARANTEED RATE AFFINITY LLC |
|---|---|
| Type | Seller |
| Type | VA Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jun 1, 2049 |
The 2025 property tax bill for 309 Sejong Ln was $8,889.
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Elementary School District | Mark West Union Elementary School District (KG - 06) |
| Secondary School District | Santa Rosa High School District (07 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $649,456 (+2%) Land $259,782 Building $389,674 | |
| 2025 | $8,889.00 | $636,723 Land $254,689 Building $382,034 |
| 2023 | $8,401.00 (+4.89%) | $612,000 Land $244,800 Building $367,200 |
| 2022 | $8,009.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 309 Sejong Ln in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective February 15, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 309 Sejong Ln is low, with 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 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 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.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CALIFORNIA-AMERICAN LARKFIELD (PUC) private · serves 7,911 people · EPA ID CA4910023 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Mar 2026 |
| Lead | 6 ppb (2023–2025) 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 460 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 1,200 / 35 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
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