Montgomery County property record for 357 Frederick Ave, Rockville, MD 20850
| Property Type | Park, Playground, Picnic Area |
|---|---|
| Details | 9,576 sqft · built 1970 |
| Lot Size | 1.01 acres (44,431 sqft) |
| Owner | 2 Company Names on File |
| Flood Zone | Zone X (minimal risk) |
| APN | 04-00151792 |
| Primary APN | 04-00151792 |
|---|---|
| Alternative APN |
|
| Building Area | 9,576 sqft Total Area |
|---|
| Year Built | Built 1970 |
|---|---|
| Effective Year Built | Effective 1970 |
| Lot Area | 44,431 sqft |
| View / Lot | Commercial/Industrial |
| Account Number | 00151792 |
|---|---|
| Street Address | 357 FREDERICK AVE |
| City | ROCKVILLE |
| State | MD |
| Zip | 20850-1215 |
| Property Category | Public Works |
| Property Type | Public Works > Park, Playground, Picnic Area |
| Local Zoning Code | R60 |
| Legal Description | TEN BROS ETC |
| Legal Subdivision | CODM SPRING PARK ROCKVILLE PAR IND |
| Legal Block | 1 |
| Jurisdiction | MONTGOMERY MD |
| Township / Civil Division | 4 |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 700902 |
357 Frederick Ave, a public works property, is owned by a company.
Source: Montgomery County records, as of August 17, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Owner Type | Company |
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 |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Montgomery County assessment roll, as of August 17, 2026
| Type | Name |
|---|---|
| State | Maryland |
| County | Montgomery County |
| Municipality | Rockville City |
| Unified School District | Montgomery County Public Schools (PK - 12) |
| Year | Assessed Value | Assessed Market Value |
|---|---|---|
| 2026 | $1,095,900 (+1.06%) Land $377,700 Building $718,200 | $1,095,900 (-) Land $377,700 Building $718,200 |
| 2025 | $1,084,433 | $1,095,900 Land $377,700 Building $718,200 |
| 2023 | $1,061,500 Land $343,300 Building $718,200 | $1,061,500 Land $343,300 Building $718,200 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 357 Frederick Ave in Zone X, an area of minimal flood risk.
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 | 1 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.
Wildfire risk around 357 Frederick Ave 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 | 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 | CITY OF ROCKVILLE serves 52,000 people · EPA ID MD0150003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jun 2025 |
| Lead | Under 1 ppb (2018) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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 332 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 / 250 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
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