Montgomery County property record for 300 E Diamond Ave, Gaithersburg, MD 20877
| Property Type | Government / Public Use |
|---|---|
| Details | 1,276 sqft · built 1900 |
| Lot Size | 0.342 acres (14,907 sqft) |
| Owner | 2 Individual Names on Record |
| Flood Zone | Zone X (minimal risk) |
| APN | 09-00818872 |
| Primary APN | 09-00818872 |
|---|---|
| Alternative APN |
|
| Building Area | 1,276 sqft |
|---|
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1900 |
| Lot Area | 14,907 sqft (0.342 acres) |
| Sewer | Municipal |
|---|
| Account Number | 00818872 |
|---|---|
| Street Address | 300 W DIAMOND AVE |
| City | GAITHERSBURG |
| State | MD |
| Zip | 20877 |
| Property Category | Public Works |
| Property Type | Public Works > Government / Public Use |
| Local Zoning Code | RB |
| Legal Description | THOMAS ADD TO GAITHE RSBURG ITEM NO 90307 |
| Legal Subdivision | GAITHERSBURG TOWN |
| Legal Block | 2 |
| Legal Lot Number | 1 |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 9 |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 700724 |
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 23607 PUBLIC HOUSE RD, CLARKSBURG, MD 20871-4324 |
| Owner Type | Individual |
| Vesting | Tenants by the Entirety |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 12, 2000 |
| Deed Sale | Oct 12, 2000 |
| Deed Document Number | 2000192885 |
| Deed Book / Page | 18470 / 560 |
| Last Transfer Date | Dec 20, 2022 |
| Transfer Doc | 6662000097 |
| 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 | Assessed Value | Assessed Market Value |
|---|---|---|
| 2026 | $206,100 (+3.14%) Land $206,000 Building $100 | $206,100 (-) Land $206,000 Building $100 |
| 2025 | $199,833 (+6.69%) | $206,100 (+10.04%) Land $206,000 Building $100 |
| 2023 | $187,300 Land $187,200 Building $100 | $187,300 Land $187,200 Building $100 |
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 | Not rated no burnable land within 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 230 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 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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