Miami-Dade County property record for 548 S Mashta Dr, Key Biscayne, FL 33149
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 5 ba · 8,943 sqft · built 2014 |
| Lot Size | 0.344 acres (15,000 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $5,300,000 (May 2010) |
| Tax Bill | $160,682 (2025) |
| Flood Zone | Zone AE (high risk) |
| APN | 24-5205-009-0150 |
| Primary APN | 24-5205-009-0150 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 5 Baths |
| Units | 2 Units |
| Stories | 4 Stories |
| Building Area | 8,943 sqft Living Area |
| Gross Area | 11,940 sqft |
| Elevator | Elevator |
| Year Built | Built 2014 |
|---|---|
| Effective Year Built | Effective 2014 |
| Exterior Material | Concrete Block/Stucco |
| Construction Type | Concrete Block |
| Roof Type | Rigid Frame Bar Joist |
| Roof Material | Other |
| Lot Area | 15,000 sqft (0.344 acres) |
| Lot Dimensions | 150 ft deep x 100 ft wide |
| Patio Area | 1,200 sqft |
| Boat Access | Boat Access |
| Street Address | 548 S MASHTA DR |
|---|---|
| City | KEY BISCAYNE |
| State | FL |
| Zip | 33149-1733 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | 2001 |
| Legal Description | 5-6 55 42 PB 65-65 MASHTA ISLAND A REPLAT OF TRS A B & C SE70FT OF LOT 14 & NWLY30FT OF LOT 15 BLK 3 LOT SIZE100.000 X 150 OR 14921-1238 0291 1 |
| Legal Range | 42E |
| Legal Township | 55S |
| Legal Section | 05 |
| Legal Subdivision | MASHTA ISLAND |
| Legal Tract | A |
| Legal Block | 1 |
| Legal Lot Number | 14 |
| Jurisdiction | DADE FL |
| Township / Civil Division | KEY BISCAYNE |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 4602 |
Source: Miami-Dade County records, as of October 21, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 548 S MASHTA DR, KEY BISCAYNE, FL 33149-1733 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 20, 2010 · Amount on Record |
| Deed Sale | May 20, 2010 · Amount on Record |
| Deed Document Number | 2010340375 |
| Deed Book / Page | 27291 / 4766 |
| Record Updated | Oct 29, 2026 |
Source: Miami-Dade County assessment roll, as of October 21, 2026
| Type | Name |
|---|---|
| State | Florida |
| County | Miami-Dade County |
| Municipality | Key Biscayne Village |
| Unified School District | Dade County School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $160,682.00 (+3.61%) Homeowner's exemption | $10,257,352 (+5.99%) | $12,265,186 (+14.93%) Land $9,300,000 Building $2,965,186 |
| 2023 | $155,083.00 (+3.5%) Homeowner's exemption | $9,677,935 (+3%) | $10,671,845 (+6.1%) Land $7,770,000 Building $2,901,845 |
| 2022 | $149,834.00 Homeowner's exemption | $9,396,054 | $10,058,375 Land $7,125,000 Building $2,933,375 |
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 January 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | 10.0 ft |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on Record median of 201 policies |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 201 in force |
| Nearby Flood Claims | 312 (1979–2024) |
| Claims Outside the SFHA | 1 of 312 |
| Most Recent Claim | Jun 2024 · rainfall accumulation |
| Claims by Event |
|
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 | Not rated no burnable land within 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 | MDWASA - MAIN SYSTEM serves 2,377,460 people · EPA ID FL4130871 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Dec 2023 |
| Lead | 3 ppb (2023) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 6 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 247 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
5G (outdoors only) and 4G LTE
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