Montgomery County property record for 4125 Mount Olney Ln, Olney, MD 20832
| Property Type | Single Family Home |
|---|---|
| Details | 3 ba · 1,990 sqft · built 1971 |
| Lot Size | 0.369 acres (16,070 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $6,994 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 08-00744417 |
| Primary APN | 08-00744417 |
|---|---|
| Alternative APN |
|
| Full Baths | 3 Baths |
|---|---|
| Stories | 1 Story |
| Building Area | 1,990 sqft Living Area |
| Gross Area | 2,830 sqft |
| 1st Floor Area | 1,690 sqft |
| Basement Area | 300 sqft |
| Finished Basement | 300 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1971 |
|---|---|
| Effective Year Built | Effective 1971 |
| Architectural Style | Townhouse |
| Exterior Material | Brick |
| Construction Type | Brick |
| Roof Material | Composition Shingle |
| Lot Area | 16,070 sqft (0.369 acres) |
| Garage Type | Attached |
| Garage Area | 840 sqft |
| Parking Spaces | 3 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Sewer | Municipal |
| Account Number | 00744417 |
|---|---|
| Street Address | 4125 MOUNT OLNEY LN |
| City | OLNEY |
| State | MD |
| Zip | 20832-1003 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RE1 |
| Legal Description | OLNEY MILL |
| Legal Subdivision | OLNEY MILL |
| Legal Block | 33 |
| Legal Lot Number | 6 |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 8 |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 701304 |
4125 Mount Olney Ln is owner-occupied and held in a trust since December 2024.
Source: Montgomery County records, as of August 17, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 4125 MOUNT OLNEY LN, OLNEY, MD 20832-1003 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Dec 12, 2024 |
| Transfer Doc | 0687870009 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 4125 Mount Olney Ln was $6,994, up 7.2% from the year before.
Source: Montgomery County assessment roll, as of August 17, 2026
| Type | Name |
|---|---|
| State | Maryland |
| County | Montgomery County |
| Unified School District | Montgomery County Public Schools (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $580,800 (+5.91%) | $645,600 (+17.72%) Land $262,000 Building $383,600 | |
| 2025 | $6,994.00 (+7.19%) | $548,400 Land $249,500 Building $298,900 | $548,400 Land $249,500 Building $298,900 |
| 2024 | $6,525.00 | ||
| 2023 | $483,867 | $548,400 Land $249,500 Building $298,900 | |
| 2022 | $4,818.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4125 Mount Olney Ln in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 4125 Mount Olney Ln is low, with 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 80% of the US · above 41% of Maryland |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 239 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 1,200 / 35 |
| Verizon Fiber | 980 / 880 |
| T-Mobile Fixed Wireless | 100 / 20 |
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