Montgomery County property record for 429 E Diamond Ave, Gaithersburg, MD 20877
| Property Type | Warehouse, Storage |
|---|---|
| Details | 16,800 sqft · built 1982 |
| Lot Size | 0.628 acres (27,332 sqft) |
| Owner | Company Name on Record |
| Last Sale | $950,000 (Sep 2003) |
| Tax Bill | $32,232 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 09-02174817 |
| Primary APN | 09-02174817 |
|---|---|
| Alternative APN |
|
| Units | 12 Units |
|---|---|
| Stories | 1 Story |
| Building Area | 16,800 sqft Gross Area |
| 1st Floor Area | 16,800 sqft |
| Year Built | Built 1982 |
|---|---|
| Effective Year Built | Effective 1982 |
| Construction Type | Brick |
| Fire Resistance | Masonry Walls, Wood Interior |
| Lot Area | 27,332 sqft (0.628 acres) |
| View / Lot | Commercial/Industrial |
| Cooling System | Central |
|---|---|
| Heating System | Space Heater |
| Sewer | Municipal |
| Account Number | 02174817 |
|---|---|
| Street Address | 429 E DIAMOND AVE |
| City | GAITHERSBURG |
| State | MD |
| Zip | 20877-3028 |
| Property Category | Industrial |
| Property Type | Industrial > Warehouse, Storage |
| Local Zoning Code | CBD |
| Legal Description | GAITHERSBURG FLIEGEL S 2ND ADD |
| Legal Subdivision | GAITHERSBURG TOWN |
| Legal Block | 1 |
| Legal Lot Number | 1 |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 9 |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 700725 |
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 | Company Name on Record |
|---|---|
| Mailing Address | 429 E DIAMOND AVE, GAITHERSBURG, MD 20877-3028 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 9, 2003 · Amount on Record |
| Deed Sale | Sep 9, 2003 · Amount on Record |
| Deed Document Number | 2003281639 |
| 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 | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $2,052,200 (+5.7%) Land $406,400 Building $1,645,800 | $2,052,200 (-) Land $406,400 Building $1,645,800 | |
| 2025 | $32,232.00 (+24.65%) | $1,941,533 (+12.87%) | $2,052,200 (+19.3%) Land $406,400 Building $1,645,800 |
| 2023 | $1,720,200 Land $369,500 Building $1,350,700 | $1,720,200 Land $369,500 Building $1,350,700 | |
| 2022 | $25,858.00 |
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
| 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 | Low lower than 98% of the US · lower than 96% of Maryland |
|---|---|
| Wildfire Likelihood | Under 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 | 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 212 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 / 2,000 |
| Astound Broadband Cable | 1,500 / 50 |
May also be available: T-Mobile.
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