Montgomery County property record for 421 Bostwick Ln, Gaithersburg, MD 20878
| Property Type | Single Family Home |
|---|---|
| Details | 2.5 ba · 2,618 sqft · built 1985 |
| Lot Size | 0.197 acres (8,576 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $579,900 (Dec 2005) |
| Tax Bill | $6,884 (2025) |
| Deeds & Mortgages | Aug 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 09-02356687 |
| Primary APN | 09-02356687 |
|---|---|
| Alternative APN |
|
| Full Baths | 2.5 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Stories | 2 Stories |
| Building Area | 2,618 sqft Living Area |
| Gross Area | 3,080 sqft |
| 1st Floor Area | 1,058 sqft |
| Basement Area | 800 sqft |
| Finished Basement | 800 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1985 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | Bi-Level |
| Exterior Material | Siding |
| Roof Material | Composition Shingle |
| Lot Area | 8,576 sqft (0.197 acres) |
| Garage Type | Attached |
| Garage Area | 462 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 448 sqft |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Sewer | Municipal |
| Account Number | 02356687 |
|---|---|
| Street Address | 421 BOSTWICK LN |
| City | GAITHERSBURG |
| State | MD |
| Zip | 20878-1933 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R90 |
| Legal Description | FERNSHIRE FARMS |
| Legal Subdivision | FERNSHIRE FARMS |
| Legal Block | C |
| Legal Lot Number | 36 |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 9 |
| Census Block Group | 1 |
| Census Block | 1012 |
| Census Tract | 700823 |
421 Bostwick Ln is owned and occupied by two individuals who bought it in December 2005.
Source: Montgomery County records, as of August 17, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 421 BOSTWICK LN, GAITHERSBURG, MD 20878-1933 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 19, 2005 · Amount on File |
| Deed Sale | Dec 19, 2005 · Amount on File |
| Deed Document Number | 200538003 |
| Deed Book / Page | 31467 / 454 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | MONTGOMERY MD |
| Property Address | 421 BOSTWICK LN, GAITHERSBURG, MD 20878-1933 |
| Transaction Type | Mortgage |
| Record Updated | Sep 16, 2021 |
| Title Company | AMROCK INC, AMROCK LLC |
| Name | Verified Name |
|---|---|
| Address | 421 BOSTWICK LN, GAITHERSBURG, MD 20878-1933 |
| Document Number | 0639220268 |
|---|---|
| Date | Aug 31, 2021 |
| Book Page | 63922/268 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Address | COLUMBUS, OH 43240 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 349 Months |
| Due | Sep 1, 2050 |
The 2025 property tax bill for 421 Bostwick Ln was $6,884.
Source: Montgomery County assessment roll, as of August 17, 2026
| Type | Name |
|---|---|
| State | Maryland |
| County | Montgomery County |
| Municipality | Gaithersburg City |
| Unified School District | Montgomery County Public Schools (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $576,100 (+4.31%) Land $236,000 Building $340,100 | $576,100 (-) Land $236,000 Building $340,100 | |
| 2025 | $6,884.00 | $552,300 | $576,100 Land $236,000 Building $340,100 |
| 2023 | $504,700 Land $236,000 Building $268,700 | $504,700 Land $236,000 Building $268,700 | |
| 2022 | $5,841.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 421 Bostwick Ln in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1979.
Source: FEMA National Flood Hazard Layer, effective April 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 | 1 (1979) |
| Most Recent Claim | Oct 1979 · tidal / storm surge |
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 risk around 421 Bostwick 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 97% of the US · lower than 94% of Maryland |
|---|---|
| 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.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | WASHINGTON SUBURBAN SANITARY COMMISSION serves 1,900,000 people · EPA ID MD0150005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | May 2025 |
| Lead | Under 1 ppb (2018–2020) 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 225 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| Xfinity Cable | 2,000 / 2,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, AT&T.
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