Montgomery County property record for 18503 Reliant Dr, Gaithersburg, MD 20879
| Property Type | Single Family Home |
|---|---|
| Details | 2.5 ba · 5,328 sqft · built 2001 |
| Lot Size | 0.424 acres (18,475 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $695,000 (Aug 2008) |
| Tax Bill | $9,551 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 01-03310852 |
| Primary APN | 01-03310852 |
|---|---|
| Alternative APN |
|
| Full Baths | 2.5 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Stories | 2 Stories |
| Building Area | 5,328 sqft Living Area |
| Gross Area | 5,810 sqft |
| 1st Floor Area | 2,298 sqft |
| Basement Area | 1,362 sqft |
| Finished Basement | 1,362 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 2001 |
|---|---|
| Effective Year Built | Effective 2001 |
| Architectural Style | Bi-Level |
| Exterior Material | Siding |
| Roof Material | Composition Shingle |
| Lot Area | 18,475 sqft (0.424 acres) |
| Garage Type | Attached |
| Garage Area | 482 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 180 sqft |
| Deck Area | 200 sqft |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Sewer | Connected |
| Account Number | 03310852 |
|---|---|
| Street Address | 18503 RELIANT DR |
| City | GAITHERSBURG |
| State | MD |
| Zip | 20879-5419 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RE1 |
| Legal Description | REDLAND PARK |
| Legal Subdivision | REDLAND PARK |
| Legal Block | B |
| Legal Lot Number | 37 |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 1 |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 700103 |
18503 Reliant Dr is owned and occupied by two individuals who bought it in August 2008.
Source: Montgomery County records, as of August 17, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 18503 RELIANT DR, GAITHERSBURG, MD 20879-5419 |
| 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 | Aug 27, 2008 · Amount on File |
| Deed Sale | Aug 27, 2008 · Amount on File |
| Prior Sale | Jun 27, 2001 · Amount on File |
| Deed Document Number | 2008120001 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 18503 Reliant Dr was $9,551.
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 | $920,500 (+8.81%) Land $236,100 Building $684,400 | $920,500 (-) Land $236,100 Building $684,400 | |
| 2025 | $9,551.00 | $846,000 | $920,500 Land $236,100 Building $684,400 |
| 2023 | $697,000 Land $236,100 Building $460,900 | $697,000 Land $236,100 Building $460,900 | |
| 2022 | $7,388.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 18503 Reliant Dr in Zone X, an area of minimal flood risk, though there have been 4 flood claims nearby since 1978.
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 | 4 (1978–2019) |
| Claims Outside the SFHA | 2 of 4 |
| Most Recent Claim | Jul 2019 · 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.
Wildfire risk around 18503 Reliant 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 | 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 70 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fiber | 980 / 880 |
| T-Mobile Fixed Wireless | 100 / 20 |
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