Montgomery County property record for 331 Dean Dr, Rockville, MD 20851
| Property Type | Single Family Home |
|---|---|
| Details | 1.5 ba · 1,846 sqft · built 1953 |
| Lot Size | 0.158 acres (6,875 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $434,000 (Jun 2013) |
| Tax Bill | $7,792 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 04-00216045 |
| Primary APN | 04-00216045 |
|---|---|
| Alternative APN |
|
| Full Baths | 1.5 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Stories | 2 Stories |
| Building Area | 1,846 sqft Living Area |
| 1st Floor Area | 988 sqft |
| Utility Area | 66 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1953 |
|---|---|
| Effective Year Built | Effective 1953 |
| Architectural Style | Bi-Level |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 6,875 sqft (0.158 acres) |
| Porch | Open Porch |
|---|---|
| Porch Area | 102 sqft |
| Patio Area | 250 sqft |
| Shed | 1 Shed |
| Shed Area | 120 sqft |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Sewer | Municipal |
| Account Number | 00216045 |
|---|---|
| Street Address | 331 DEAN DR |
| City | ROCKVILLE |
| State | MD |
| Zip | 20851-1144 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R60 |
| Legal Description | GEERAERTS ADD TWINBR OOK |
| Legal Subdivision | TWINBROOK |
| Legal Block | 57 |
| Legal Lot Number | 18 |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 4 |
| Census Block Group | 4 |
| Census Block | 4003 |
| Census Tract | 701101 |
331 Dean Dr is owned and occupied by two individuals who bought it in June 2013.
Source: Montgomery County records, as of August 17, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 331 DEAN DR, ROCKVILLE, MD 20851-1144 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Tenants by the Entirety |
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 | Jun 24, 2013 · Amount on File |
| Deed Sale | Jun 24, 2013 · Amount on File |
| Prior Sale | Jun 25, 2007 |
| Deed Book / Page | 47080 / 111 |
| Prior Transfer Date | Jun 21, 2007 |
| Prior Transfer Doc | 79534 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 331 Dean Dr was $7,792, down 1.8% from the year before.
Source: Montgomery County assessment roll, as of August 17, 2026
| Type | Name |
|---|---|
| State | Maryland |
| County | Montgomery County |
| Municipality | Rockville City |
| Unified School District | Montgomery County Public Schools (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $611,200 (+6.01%) Land $235,200 Building $376,000 | $611,200 (-) Land $235,200 Building $376,000 | |
| 2025 | $7,792.00 (-1.79%) | $576,567 | $611,200 Land $235,200 Building $376,000 |
| 2024 | $7,934.00 | ||
| 2023 | $507,300 (+1.78%) Land $224,000 Building $283,300 | $507,300 (-) Land $224,000 Building $283,300 | |
| 2022 | $6,392.00 Homeowner's exemption | $498,433 | $507,300 Land $224,000 Building $283,300 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 331 Dean Dr in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 331 Dean Dr 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 · above 41% of Maryland |
|---|---|
| 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 | CITY OF ROCKVILLE serves 52,000 people · EPA ID MD0150003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jun 2025 |
| Lead | Under 1 ppb (2018) 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 377 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber | 2,300 / 2,300 |
| Xfinity Cable | 2,000 / 250 |
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