Montgomery County property record for 317 E Diamond Ave, Gaithersburg, MD 20877
| Property Type | Commercial Office |
|---|---|
| Details | 28,260 sqft · built 1941 |
| Lot Size | 0.99 acres (43,107 sqft) |
| Owner | Company Name on Record |
| Last Sale | $6,850,000 (Jun 2025) |
| Tax Bill | $48,811 (2025) |
| Deeds & Mortgages | Apr 2018 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 09-03096914 |
| Primary APN | 09-03096914 |
|---|---|
| Alternative APN |
|
| Units | 9 Units |
|---|---|
| Stories | 1 Story |
| Building Area | 28,260 sqft Gross Area |
| 1st Floor Area | 28,260 sqft |
| Basement Area | 9,792 sqft |
| Fire Sprinklers | Fire Sprinklers |
| Year Built | Built 1941 |
|---|---|
| Effective Year Built | Effective 1941 |
| Construction Type | Brick |
| Fire Resistance | Masonry Walls, Wood Interior |
| Lot Area | 43,107 sqft (0.99 acres) |
| View / Lot | Commercial/Industrial |
| Canopy | 1,584 sqft |
| Total Buildings | 2 Buildings |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Sewer | Municipal |
| Account Number | 03096914 |
|---|---|
| Street Address | 317 E DIAMOND AVE |
| City | GAITHERSBURG |
| State | MD |
| Zip | 20877-3093 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Local Zoning Code | CBD |
| Legal Description | WINKLER PROPERTY |
| 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 | 13105 ISLE OF MANN WAY, HIGHLAND, MD 20777-9788 |
| Owner Type | Company |
| Vesting | Sole Owner |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 9, 2025 · Amount on Record |
| Deed Sale | Jun 9, 2025 · Amount on Record |
| Prior Sale | Oct 1, 1993 · Amount on Record |
| Deed Book / Page | 69261 / 105 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | MONTGOMERY MD |
| Recording Date | Apr 10, 2018 |
| Property Address | 317 E DIAMOND AVE, GAITHERSBURG, MD 20877-3093 |
| Document Number | 0558700452 |
| Book / Page | 055870 / 000452 |
| Instrument Date | Mar 13, 2018 |
| Transaction Type | Transfer |
| Record Updated | Apr 20, 2018 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 8418 PETERS RD FREDERICK MD 217048107, FREDERICK, MD 21704-8107 |
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 | $3,452,800 (+4.57%) Land $733,200 Building $2,719,600 | $3,452,800 (-) Land $733,200 Building $2,719,600 | |
| 2025 | $48,811.00 (+14.97%) | $3,301,867 (+10.06%) | $3,452,800 (+15.09%) Land $733,200 Building $2,719,600 |
| 2023 | $3,000,000 Land $666,400 Building $2,333,600 | $3,000,000 Land $666,400 Building $2,333,600 | |
| 2022 | $42,457.00 |
Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
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.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures