Montgomery County property record for 316 E Diamond Ave, Gaithersburg, MD 20877
| Property Type | Commercial Office |
|---|---|
| Details | 4,800 sqft · built 1934 |
| Lot Size | 0.193 acres (8,422 sqft) |
| Owner | Company Name on Record |
| Last Sale | $1,550,000 (Oct 2024) |
| Tax Bill | $12,662 (2025) |
| Deeds & Mortgages | Mar 2023 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 09-03639352 |
| Primary APN | 09-03639352 |
|---|---|
| Alternative APNs |
|
| Units | 3 Units |
|---|---|
| Stories | 2 Stories |
| Building Area | 4,800 sqft Gross Area |
| 1st Floor Area | 4,800 sqft |
| Year Built | Built 1934 |
|---|---|
| Effective Year Built | Effective 1934 |
| Exterior Material | Brick |
| Construction Type | Brick |
| Fire Resistance | Wood or Wood & Steel Frame |
| Lot Area | 8,422 sqft (0.193 acres) |
| View / Lot | Commercial/Industrial |
| Garage Type | Detached |
| Garage Area | 1,584 sqft |
| Parking Spaces | 5 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 50 sqft |
| Canopy | 144 sqft |
| Cooling System | A/C Chilled Water |
|---|---|
| Heating System | Hot Water |
| Sewer | Municipal |
| Account Number | 03639352 |
|---|---|
| Street Address | 316 E DIAMOND AVE |
| City | GAITHERSBURG |
| State | MD |
| Zip | 20877-3016 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Local Zoning Code | CBD |
| Legal Description | PAR B OLDE TOWNE |
| Legal Subdivision | GAITHERSBURG TOWN |
| Legal Block | E |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 9 |
| Census Block Group | 1 |
| Census Block | 1002 |
| 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 | 316 E DIAMOND AVE, GAITHERSBURG, MD 20877-3016 |
| Owner Type | Company |
| Vesting | Limited Liability Partnership |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 21, 2024 · Amount on Record |
| Deed Sale | Oct 21, 2024 · Amount on Record |
| Prior Sale | Mar 31, 2005 |
| Deed Book / Page | 68517 / 362 |
| Prior Transfer Date | Mar 17, 2023 |
| Prior Transfer Doc | 0668490447 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | MONTGOMERY MD |
| Recording Date | Mar 28, 2023 |
| Property Address | 316 E DIAMOND AVE, GAITHERSBURG, MD 20877-3070 |
| Document Number | 0668490447 |
| Book / Page | 66849 / 447 |
| Map Reference | PL 23895 |
| Instrument Date | Mar 17, 2023 |
| Transaction Type | Transfer |
| Record Updated | Apr 25, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Tenants in Severalty |
| Address | 316 E DIAMOND AVE, GAITHERSBURG, MD 20877-3070 |
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 | $930,500 (+2.8%) Land $187,900 Building $742,600 | $930,500 (-) Land $187,900 Building $742,600 | |
| 2025 | $12,662.00 (+4.19%) | $905,133 (+5.94%) | $930,500 (+8.91%) Land $187,900 Building $742,600 |
| 2024 | $12,153.00 (+9.06%) | ||
| 2023 | $854,400 Land $170,800 Building $683,600 | $854,400 Land $170,800 Building $683,600 | |
| 2022 | $11,143.00 |
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 276 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
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