380 W 21 ST
Office building — one story · Hialeah · 33010 · Hialeah South
At a glance
380 W 21 ST in Hialeah, FL is listed on the Miami-Dade County property roll as “Office building — one story”, folio 0431070020920. The roll records 4,593 sq ft of building area, 1 floors, a 1992 build year and an assessed value of $871,271 (2026 roll). It last sold for $1,700,000 in Aug 2017. 2 active business locations at this address appear in public records.
Recorded transfers — county roll + state sale file
Sale history
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| Aug 2017 | $1,700,000 | 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 |
|---|---|---|---|---|
| CHILDRENS CHRISTIAN SCHOOLHOUSE INC | — | Oct 1991 | County business tax | address match · high |
Registered entities at this address (1) — Florida corporate registry
Active Florida entities whose registered principal address is this building. A registration is evidence of presence, not a verified lease — many are holding companies or entities administered from a tenant's suite.
| Entity | Suite / floor | Filed | Match |
|---|---|---|---|
| AJM HIALEAH HOLDINGS, LLC | — | Jun 2017 | address match · high |
Miami-Dade County assessment roll 2026
Parcel record
| Field | Value |
|---|---|
| folio | 0431070020920 |
| Site address | 380 W 21 ST |
| Land use (DOR) | 1713 — Office building — one story |
| Building area (actual) | 4,593 sq ft |
| Building area (gross) | 4,593 sq ft |
| Floors / units / buildings | 1 / — / 1 |
| Lot size | 7,709 sq ft |
| Year built | 1992 |
| Zoning (primary) | 7100 |
| Land value | $462,540 |
| Building value | $408,731 |
| Total assessed value | $871,271 |
Recorded owner (assessment roll)
AJM HIALEAH HOLDINGS LLC
Owner mailing address: 380 W 21 ST, HIALEAH, FL, 33010
The owner is on site. A business-tax receipt at this address is held in the owner's own name, so the public record shows an owner-occupier rather than a landlord letting the space.
Location
- Address
- 380 W 21 ST
- City
- Hialeah
- Submarket
- Hialeah South
- ZIP
- 33010
- Coordinates
- 25.84030, -80.28938
Submarket labels are informal ZIP-derived groupings, not official designations.
Within ~650 m
Nearby office buildings
- 149 W 21 ST23 tenants
15,463 sq ft · 2018
- 1801 W 4 AVE2 tenants
6,794 sq ft · 1 fl · 1960
- 375 W 19 ST2 tenants
4,355 sq ft · 1 fl · 1972
- 2530 W 2 AVE0 tenants
3,564 sq ft · 1 fl · 1963
- 96 W 21 ST0 tenants
3,320 sq ft · 1 fl · 1966
- 235 W 25 ST3 tenants
2,954 sq ft · 2 fl · 1967
How does 380 W 21 ST compare with other Miami office buildings?
At 4,593 sq ft, 380 W 21 ST is less than a fifth 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 $190 per square foot of building area, against $203 across all office floor area on the roll.
The last recorded sale priced it at $370 per square foot.
Does the owner of 380 W 21 ST hold other Miami office property?
AJM HIALEAH HOLDINGS LLC also holds a business-tax receipt at this address, so the public record shows an owner-occupier rather than a landlord letting the space.
What has happened at 380 W 21 ST recently?
1 recorded transfer is on file for this parcel, the latest dated Aug 2017.
What does “OFFICE BUILDING - ONE STORY : OFFICE BUILDING” mean for this parcel?
The Miami-Dade County roll classifies folio 0431070020920 as “OFFICE BUILDING - ONE STORY : OFFICE BUILDING” (use code 1713). 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 7100.
Frequently asked questions
Who owns 380 W 21 ST?
The recorded owner on the Miami-Dade County assessment roll (2026) is AJM HIALEAH HOLDINGS LLC. Owner mailing address on file: 380 W 21 ST, HIALEAH, FL, 33010.
What companies have offices at 380 W 21 ST?
2 active business locations at this building appear in Miami-Dade County public records, including CHILDRENS CHRISTIAN SCHOOLHOUSE INC, AJM HIALEAH HOLDINGS, LLC. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 380 W 21 ST?
The Miami-Dade County roll records 4,593 sq ft of building area, 1 floors, a build year of 1992. It sits on a 7,709 sq ft lot.
What is the assessed value of 380 W 21 ST?
$871,271 on the 2026 Miami-Dade County roll — $462,540 land and $408,731 building. Assessed values are taxable-roll figures, not market prices.
When did 380 W 21 ST last sell?
The last recorded transfer was in Aug 2017 for $1,700,000 ($370 per square foot).
What is the folio for 380 W 21 ST?
Folio 0431070020920, site address 380 W 21 ST, Hialeah. It is the key to look the parcel up in the Miami-Dade County Property Appraiser — assessment roll.
More around 380 W 21 ST
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 0431070020920.
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, “380 W 21 ST, Hialeah, FL (folio 0431070020920)”, https://buildingcensus.com/offices/miami/office-building-3fcccaf8 (data as of October 8, 2026).