50 W MASHTA DR 6
Professional services building · Key Biscayne · 33149
At a glance
50 W MASHTA DR 6 in Key Biscayne, FL is listed on the Miami-Dade County property roll as “Professional services building”, folio 2452050410060. The roll records 1,444 sq ft of building area, a 1978 build year and an assessed value of $657,020 (2026 roll). It last sold for $510,000 in May 2008. 2 active business locations at this address appear in public records.
Permits and tenant turnover — what runs ahead of a listing
Recent activity
Permits come from Miami-Dade County, with job cost and square footage added from the City of Miami's file where the building sits in the city. Arrivals and departures are business-tax receipts opened and closed at this address. None of this is an availability listing. A permit means work was authorised, not that space is for rent, and a closed receipt can mean a business moved, renamed or simply stopped renewing. It is the record that runs ahead of a listing, which is the only part of "what is coming available" that is public at all.
Recorded transfers — county roll + state sale file
Sale history
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| May 2008 | $510,000 | not rated | County roll | — |
Prices are the consideration the documentary stamps indicate, as recorded by Miami-Dade County. A qualification code is the property appraiser's judgement of whether a transfer was arm's length; the state publishes it only for the current roll period, so older transfers appear unrated rather than assumed clean. Whether a building is on the market today, and at what price, is not a public record and is not shown here — asking prices, listings and lease terms live in private commercial databases.
Public record — 2 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| DOEREN MAYHEW | STE 6 | Apr 2026 | County business tax | folio match · high |
| LANCASTER & REED LLCvia REED RICHARD CPA | STE 6 | Oct 2018 | County business tax | folio match · high |
Miami-Dade County assessment roll 2026
Parcel record
| Field | Value |
|---|---|
| folio | 2452050410060 |
| Site address | 50 W MASHTA DR 6 |
| Land use (DOR) | 1918 — Professional services building |
| Building area (actual) | 1,444 sq ft |
| Building area (gross) | 1,444 sq ft |
| Floors / units / buildings | — / — / 1 |
| Lot size | — |
| Year built | 1978 |
| Zoning (primary) | 6100 |
| Land value | $0 |
| Building value | $0 |
| Total assessed value | $657,020 |
Recorded owner (assessment roll)
TATCHU LLC
Owner mailing address: 50 W MASHTA DR STE 6, KEY BISCAYNE, FL, 33149
Location
- Address
- 50 W MASHTA DR 6
- City
- Key Biscayne
- ZIP
- 33149
- Coordinates
- 25.68628, -80.16425
Within ~650 m
Nearby office buildings
- 520 CRANDON BLVD5 tenants
15,532 sq ft · 2 fl · 2001
- 580 CRANDON BLVD33 tenants
14,854 sq ft · 2010
- 30 W MASHTA DR43 tenants
14,174 sq ft · 2 fl · 1988
- 753 CRANDON BLVD A0 tenants
4,720 sq ft · 1998
- 753 CRANDON BLVD B0 tenants
2,772 sq ft · 1998
- 50 W MASHTA DR78 tenants
1,278 sq ft · 1978
How does 50 W MASHTA DR 6 compare with other Miami office buildings?
At 1,444 sq ft, 50 W MASHTA DR 6 is less than a tenth the size of the average office building on the Miami-Dade County roll, which comes to 29,215 sq ft across 4,288 buildings.
Its assessed value works out to $455 per square foot of building area, against $203 across all office floor area on the roll.
The last recorded sale priced it at $353 per square foot.
What has happened at 50 W MASHTA DR 6 recently?
1 recorded transfer is on file for this parcel, the latest dated May 2008.
In the last 12 months 1 business opened a receipt here and 0 closed one.
What does “PROFESSIONAL SERVICE BLDG : CONDOMINIUM - COMMERCIAL” mean for this parcel?
The Miami-Dade County roll classifies folio 2452050410060 as “PROFESSIONAL SERVICE BLDG : CONDOMINIUM - COMMERCIAL” (use code 1918). BuildingCensus includes a parcel in its office census when the roll gives it an office-class use, so the label is the county's, not an inference.
Its primary zoning on the roll is 6100.
Frequently asked questions
Who owns 50 W MASHTA DR 6?
The recorded owner on the Miami-Dade County assessment roll (2026) is TATCHU LLC. Owner mailing address on file: 50 W MASHTA DR STE 6, KEY BISCAYNE, FL, 33149.
What companies have offices at 50 W MASHTA DR 6?
2 active business locations at this building appear in Miami-Dade County public records, including DOEREN MAYHEW, LANCASTER & REED LLC. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 50 W MASHTA DR 6?
The Miami-Dade County roll records 1,444 sq ft of building area, a build year of 1978.
What is the assessed value of 50 W MASHTA DR 6?
$657,020 on the 2026 Miami-Dade County roll — $0 land and $0 building. Assessed values are taxable-roll figures, not market prices.
When did 50 W MASHTA DR 6 last sell?
The last recorded transfer was in May 2008 for $510,000 ($353 per square foot).
What is the folio for 50 W MASHTA DR 6?
Folio 2452050410060, site address 50 W MASHTA DR 6, Key Biscayne. It is the key to look the parcel up in the Miami-Dade County Property Appraiser — assessment roll.
More around 50 W MASHTA DR 6
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Miami-Dade County Property Appraiser — assessment roll — Parcel identity, site address, recorded owner, use code, areas, year built and assessed values, via the county's public GIS services (MD_LandInformation, PaGis layer).
- Miami-Dade County Local Business Tax roll — Business-tax receipts: business name, premises address (incl. suite/floor), account status and start date, via the county's public GIS services.
- Florida Division of Corporations (Sunbiz) — corporate data file — Registered entities: document number, status, filing date, registered agent and principal address, from the state's public quarterly data file.
- Miami-Dade County Property Appraiser — recorded sale — The last recorded transfer price and date for the parcel, from the county's public property point view.
- Florida Department of Revenue — Sale Data File — Every transfer in the current roll period with the property appraiser's sale qualification code, vacant/improved code, multi-parcel flag and the clerk's recording reference.
Every fact on this page is drawn from the government records above — no listing sites, no scraped platforms, no third-party images. Facts from public records are uncopyrightable; each tenancy row carries its source and match confidence. Records can lag reality — a business-tax receipt or registration at an address is evidence of occupancy, not a lease confirmation.
Working with Miami office parcels? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
Dataset updated . Source: Miami-Dade County assessment roll, folio 2452050410060.
About this data
Source: Miami-Dade County Property Appraiser — assessment roll, as published October 8, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “50 W MASHTA DR 6, Key Biscayne, FL (folio 2452050410060)”, https://buildingcensus.com/offices/miami/office-building-98e1d647 (data as of October 8, 2026).