Montgomery County property record for 812 Jonker Ct, Gaithersburg, MD 20878
| Property Type | Single Family Home |
|---|---|
| Details | 3 ba · 2,188 sqft · built 1970 |
| Lot Size | 0.28 acres (12,185 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $440,000 (Apr 2016) |
| Tax Bill | $7,457 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 09-00828698 |
| Primary APN | 09-00828698 |
|---|---|
| Alternative APN |
|
| Full Baths | 3 Baths |
|---|---|
| Stories | 1 Story |
| Building Area | 2,188 sqft Living Area |
| Gross Area | 2,500 sqft |
| 1st Floor Area | 1,588 sqft |
| Basement Area | 600 sqft |
| Finished Basement | 600 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1970 |
|---|---|
| Effective Year Built | Effective 1970 |
| Architectural Style | Townhouse |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 12,185 sqft (0.28 acres) |
| Garage Type | Attached |
| Garage Area | 312 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Porch |
| Porch Area | 240 sqft |
| Deck Area | 419 sqft |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Sewer | Municipal |
| Account Number | 00828698 |
|---|---|
| Street Address | 812 JONKER CT |
| City | GAITHERSBURG |
| State | MD |
| Zip | 20878-1881 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R90 |
| Legal Description | DIAMOND COURTS 5787/ 682 |
| Legal Subdivision | DIAMOND COURTS |
| Legal Block | C |
| Legal Lot Number | 51 |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 9 |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 700823 |
812 Jonker Ct is owned and occupied by two individuals who bought it in April 2016.
Source: Montgomery County records, as of August 17, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 812 JONKER CT, GAITHERSBURG, MD 20878-1881 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Tenants by the Entirety |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 5, 2016 · Amount on File |
| Deed Sale | Apr 5, 2016 · Amount on File |
| Deed Book / Page | 51860 / 45 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 812 Jonker Ct was $7,457.
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 | $626,600 (+5.07%) Land $248,800 Building $377,800 | $626,600 (-) Land $248,800 Building $377,800 | |
| 2025 | $7,457.00 | $596,367 | $626,600 Land $248,800 Building $377,800 |
| 2023 | $535,900 Land $248,800 Building $287,100 | $535,900 Land $248,800 Building $287,100 | |
| 2022 | $6,177.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 812 Jonker Ct in Zone X, an area of minimal flood risk.
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 | 2 in force |
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 812 Jonker Ct 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 98% of the US · lower than 96% of Maryland |
|---|---|
| Wildfire Likelihood | Under 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 211 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 |
| Astound Broadband Cable | 1,500 / 50 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
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