Montgomery County property record for 10620 Alloway Dr, Potomac, MD 20854
| Property Type | Single Family Home |
|---|---|
| Details | 7.5 ba · 8,379 sqft · built 1999 |
| Lot Size | 2.26 acres (98,446 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $360,000 (Apr 1998) |
| Tax Bill | $29,285 (2025) |
| Deeds & Mortgages | Nov 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 10-03181578 |
| Primary APN | 10-03181578 |
|---|---|
| Alternative APNs |
|
| Full Baths | 7.5 Baths |
|---|---|
| Half Baths | 3 Half Baths |
| Stories | 2 Stories |
| Building Area | 8,379 sqft Living Area |
| Gross Area | 9,235 sqft |
| 1st Floor Area | 3,705 sqft |
| Basement Area | 1,400 sqft |
| Finished Basement | 1,400 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1999 |
|---|---|
| Effective Year Built | Effective 1999 |
| Architectural Style | Bi-Level |
| Exterior Material | Brick |
| Construction Type | Brick |
| Roof Material | Composition Shingle |
| Lot Area | 98,446 sqft |
| Garage Type | Attached |
| Garage Area | 856 sqft |
| Parking Spaces | 3 Parking Spaces |
| Pool Area | 800 sqft |
|---|---|
| Porch | Open Porch |
| Porch Area | 1,008 sqft |
| Patio Area | 1,000 sqft |
| Bath House | 286 sqft |
| Tennis Court | Tennis Court |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Sewer | Connected |
| Account Number | 03181578 |
|---|---|
| Street Address | 10620 ALLOWAY DR |
| City | POTOMAC |
| State | MD |
| Zip | 20854-1600 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RE2 |
| Legal Description | POTOMAC RANCH |
| Legal Subdivision | POTOMAC RANCH |
| Legal Block | D |
| Legal Lot Number | 26 |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 10 |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 706008 |
Source: Montgomery County assessment roll, 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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 10620 ALLOWAY DR, POTOMAC, MD 20854-1600 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Apr 9, 1998 · Amount on Record |
| Deed Sale | Apr 9, 1998 · Amount on Record |
| Deed Document Number | 1998114257 |
| Deed Book / Page | 15724 / 656 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | MONTGOMERY MD |
| Property Address | 10620 ALLOWAY DR, POTOMAC, MD 20854-1600 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | GPN TITLE INC |
| Name | Verified Name |
|---|
| Document Number | 0552820450 |
|---|---|
| Date | Nov 28, 2017 |
| Book Page | 55282/450 |
| Name | 1ST PORTFOLIO LENDING CORP |
|---|---|
| Type | Lending Institution |
| Address | FAIRFAX, VA 22033 |
| Type | ARM |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Dec 1, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3.87% |
| Type Change Date | Dec 1, 2024 |
| Change Frequency | Annually |
| Min Rate At Change | 3% |
| Max Rate At Change | 8.87% |
| Index | 1-Year LIBOR |
| Margin | 3 |
| Max Rate | 8.87% |
Source: Montgomery County assessment roll, as of August 17, 2026
| Type | Name |
|---|---|
| State | Maryland |
| County | Montgomery County |
| Unified School District | Montgomery County Public Schools (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $2,594,300 (+2.46%) | $2,718,900 (+7.38%) Land $556,500 Building $2,162,400 | |
| 2025 | $29,285.00 (+17.19%) | $2,532,000 (+7.45%) Land $556,500 Building $1,975,500 | $2,532,000 (-) Land $556,500 Building $1,975,500 |
| 2023 | $2,356,467 | $2,532,000 Land $556,500 Building $1,975,500 | |
| 2022 | $24,989.00 |
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 · 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 |
| Flood Insurance Cost | Premium on Record median of 27 policies |
| Nearby Flood Policies | 27 in force |
| Nearby Flood Claims | 3 (2019–2025) |
| Claims Outside the SFHA | 3 of 3 |
| Most Recent Claim | Jul 2025 · 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.
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 | Direct burnable vegetation |
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 66 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber | 2,300 / 2,300 |
| Xfinity Cable | 1,200 / 35 |
5G (outdoors only) and 4G LTE
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