Miami-Dade County property record for 591 N Mashta Dr, Key Biscayne, FL 33149
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 4.5 ba · 4,290 sqft · built 1960 |
| Lot Size | 0.349 acres (15,184 sqft) |
| Owner | Individual Name on File |
| Last Sale | $3,230,000 (Mar 2004) |
| Tax Bill | $112,793 (2025) |
| Flood Zone | Zone AE (high risk) |
| APN | 24-5205-009-0040 |
| Primary APN | 24-5205-009-0040 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 4.5 Baths |
| Half Baths | 1 Half Bath |
| Stories | 2 Stories |
| Building Area | 4,290 sqft Living Area |
| Gross Area | 6,219 sqft |
| 1st Floor Area | 4,200 sqft |
| Year Built | Built 1960 |
|---|---|
| Effective Year Built | Effective 2007 |
| Exterior Material | Concrete Block/Hollow Tile/Frame |
| Construction Type | Concrete Block |
| Lot Area | 15,184 sqft (0.349 acres) |
| Lot Dimensions | 146 ft deep x 104 ft wide |
| Patio Area | 600 sqft |
| Boat Access | Boat Access |
| Street Address | 591 N MASHTA DR |
|---|---|
| City | KEY BISCAYNE |
| State | FL |
| Zip | 33149-1718 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | 2001 |
| Legal Description | MASHTA ISLAND A REPLAT OF TRS A B & C PB 65-65 LOT 11BLK 1 LOT SIZE104.000 X 146 OR 15577-14 0982 1 COC 22096-0549 03 2004 1 |
| Legal Range | 42E |
| Legal Township | 55S |
| Legal Section | 05 |
| Legal Subdivision | MASHTA ISLAND |
| Legal Tract | A |
| Legal Block | 1 |
| Legal Lot Number | 11 |
| Jurisdiction | DADE FL |
| Township / Civil Division | KEY BISCAYNE |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 4602 |
591 N Mashta Dr is owned and occupied by an individual who bought it in March 2004.
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 File |
|---|---|
| Mailing Address | 591 N MASHTA DR, KEY BISCAYNE, FL 33149-1718 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Mar 5, 2004 · Amount on File |
| Deed Sale | Mar 5, 2004 · Amount on File |
| Deed Document Number | 2004151798 |
| Deed Book / Page | 22096 / 549 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 591 N Mashta Dr was $112,793.
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 | $112,793.00 | $6,316,504 | $7,696,204 Land $7,012,715 Building $683,489 |
| 2023 | $90,593.00 (+9.9%) | $6,434,780 (+3.07%) Land $5,739,552 Building $695,228 | $6,434,780 (+3.07%) Land $5,739,552 Building $695,228 |
| 2022 | $82,432.00 | $6,243,258 Land $5,542,160 Building $701,098 | $6,243,258 Land $5,542,160 Building $701,098 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 591 N Mashta Dr in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.
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 File 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.
Wildfire risk around 591 N Mashta Dr 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 96% of the US · lower than 96% of Florida |
|---|---|
| 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 | 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 |
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