Montgomery County property record for 421 Sternwheeler Ct, Gaithersburg, MD 20877
| Property Type | Townhouse |
|---|---|
| Details | 3 ba · 1,360 sqft · built 1981 |
| Lot Size | 0.042 acres (1,840 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $325,000 (Nov 2007) |
| Tax Bill | $3,350 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 09-01907416 |
| Primary APN | 09-01907416 |
|---|---|
| Alternative APN |
|
| Full Baths | 3 Baths |
|---|---|
| Half Baths | 2 Half Baths |
| Stories | 2 Stories |
| Building Area | 1,360 sqft Living Area |
| 1st Floor Area | 680 sqft |
| Basement Area | 1 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1981 |
|---|---|
| Effective Year Built | Effective 1981 |
| Architectural Style | Townhouse |
| Exterior Material | Siding |
| Roof Material | Composition Shingle |
| Lot Area | 1,840 sqft (0.042 acres) |
| Deck Area | 200 sqft |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Sewer | Municipal |
| Account Number | 01907416 |
|---|---|
| Street Address | 421 STERNWHEELER CT |
| City | GAITHERSBURG |
| State | MD |
| Zip | 20877-3416 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | R18 |
| Legal Description | AUDUBON SQUARE |
| Legal Subdivision | AUDUBON SQUARE |
| Legal Block | A |
| Legal Lot Number | 7 |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 9 |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 700725 |
Source: Montgomery County records, as of August 17, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 421 STERNWHEELER CT, GAITHERSBURG, MD 20877-3416 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 21, 2007 · Amount on Record |
| Deed Sale | Nov 21, 2007 · Amount on Record |
| Deed Document Number | 2007105477 |
| Deed Book / Page | 35078 / 335 |
| Record Updated | Sep 20, 2026 |
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 | $390,800 (+9.06%) Land $150,000 Building $240,800 | $390,800 (-) Land $150,000 Building $240,800 | |
| 2025 | $3,350.00 (-24.09%) | $358,333 (+22.13%) | $390,800 (+33.2%) Land $150,000 Building $240,800 |
| 2024 | $4,413.00 (+48.09%) | ||
| 2023 | $293,400 Land $120,000 Building $173,400 | $293,400 Land $120,000 Building $173,400 | |
| 2022 | $2,980.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective April 12, 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.
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 98.5% 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 212 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 |
| Astound Broadband Cable | 1,500 / 50 |
May also be available: T-Mobile.
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