Montgomery County property record for 509 Deerfield Ave, Silver Spring, MD 20910
| Property Type | Single Family Home |
|---|---|
| Details | 1.5 ba · 1,792 sqft · built 1942 |
| Lot Size | 0.144 acres (6,284 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $6,210 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 13-01047935 |
| Primary APN | 13-01047935 |
|---|---|
| Alternative APN |
|
| Full Baths | 1.5 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Stories | 1 Story |
| Building Area | 1,792 sqft Living Area |
| Gross Area | 1,992 sqft |
| 1st Floor Area | 1,016 sqft |
| Basement Area | 338 sqft |
| Finished Basement | 338 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1942 |
|---|---|
| Effective Year Built | Effective 1942 |
| Architectural Style | Multi-Level |
| Exterior Material | Brick |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 6,284 sqft (0.144 acres) |
| Garage Type | Attached |
| Garage Area | 200 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Sewer | Municipal |
| Account Number | 01047935 |
|---|---|
| Street Address | 509 DEERFIELD AVE |
| City | SILVER SPRING |
| State | MD |
| Zip | 20910-5506 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R60 |
| Legal Description | SMITHS 4TH ADD |
| Legal Subdivision | SILVER SPRING |
| Legal Block | 22 |
| Legal Lot Number | 41 |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 13 |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 702401 |
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 Company Names on Record |
|---|---|
| Mailing Address | 509 DEERFIELD AVE, SILVER SPRING, MD 20910-5506 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Sep 5, 2024 |
| Transfer Doc | 0684100372 |
| Record Updated | Sep 20, 2026 |
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 | $534,900 (-) Land $334,600 Building $200,300 | $534,900 (-) Land $334,600 Building $200,300 | |
| 2025 | $6,210.00 (-10.47%) | $534,900 (-0.97%) Land $334,600 Building $200,300 | $534,900 (-1.85%) Land $334,600 Building $200,300 |
| 2024 | $6,936.00 (+41.99%) | ||
| 2023 | $540,133 | $545,000 Land $334,600 Building $210,400 | |
| 2022 | $4,885.00 |
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 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 2 in force |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; 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 445 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 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: MoCoNet, Starry.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures