830 NW 73 ST
Office building — one story · Unincorporated County · 33150 · Little Haiti / Lemon City
At a glance
830 NW 73 ST in Unincorporated County, FL is listed on the Miami-Dade County property roll as “Office building — one story”, folio 3031110353960. The roll records 2,660 sq ft of building area, 1 floors, a 1949 build year and an assessed value of $1,353,349 (2026 roll). It last sold for $1,290,000 in Jan 2019. 2 active business locations at this address appear in public records.
Permits and tenant turnover — what runs ahead of a listing
Recent activity
| Issued | Suite | Work | Cost | Status | Contractor |
|---|---|---|---|---|---|
| Jul 2026 | — | GENERAL (COUNTY) · FENCE | — | A | CONTRACTORS 911 LLC |
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 |
|---|---|---|---|---|
| Jan 2019 | $1,290,000 | 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 |
|---|---|---|---|---|
| ADONEL CONCRETE CORP | — | Nov 2022 | County business tax | folio match · high |
| GERARDO L GARCIAvia ADONEL CONCRETE CORP. | — | Feb 2025 | Certificate of use | folio match · high |
Miami-Dade County assessment roll 2026
Parcel record
| Field | Value |
|---|---|
| folio | 3031110353960 |
| Site address | 830 NW 73 ST |
| Land use (DOR) | 1713 — Office building — one story |
| Building area (actual) | 2,660 sq ft |
| Building area (gross) | 2,660 sq ft |
| Floors / units / buildings | 1 / — / 1 |
| Lot size | 29,319 sq ft |
| Year built | 1949 |
| Zoning (primary) | 7300 |
| Land value | $1,172,760 |
| Building value | $180,589 |
| Total assessed value | $1,353,349 |
Recorded owner (assessment roll)
830 NW 73 STREET LLC
Owner mailing address: 242 NW 42 AVE FLR 4, MIAMI, FL, 33126
2 Miami office properties share this owner mailing address →
Commercial property is usually held one building per entity; a shared mailbox is how the roll reveals a portfolio. It is evidence of common ownership, not proof.
Location
- Address
- 830 NW 73 ST
- City
- Unincorporated County
- Submarket
- Little Haiti / Lemon City
- ZIP
- 33150
- Coordinates
- 25.84164, -80.21172
Submarket labels are informal ZIP-derived groupings, not official designations.
Within ~650 m
Nearby office buildings
- 6777 NW 7 AVE13 tenants
6,722 sq ft · 1 fl · 1990
- 1001 NW 72 ST3 tenants
3,688 sq ft · 1 fl · 1968
- 1100 NW 73 ST11 tenants
2,888 sq ft · 1 fl · 1937
- 980 NW 79 ST0 tenants
2,340 sq ft · 1 fl · 1936
- 660 NW 71 ST4 tenants
1,307 sq ft · 1 fl · 1949
- 680 NW 71 ST4 tenants
1,250 sq ft · 1 fl · 1934
How does 830 NW 73 ST compare with other Miami office buildings?
At 2,660 sq ft, 830 NW 73 ST 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 $509 per square foot of building area, against $203 across all office floor area on the roll.
The last recorded sale priced it at $485 per square foot.
Does the owner of 830 NW 73 ST hold other Miami office property?
2 Miami office properties (2 parcels, 3K sq ft) are recorded to 2 owner entities sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What has happened at 830 NW 73 ST recently?
1 recorded transfer is on file for this parcel, the latest dated Jan 2019.
1 building permit on record, 1 issued in the last 24 months.
What does “OFFICE BUILDING - ONE STORY : OFFICE BUILDING” mean for this parcel?
The Miami-Dade County roll classifies folio 3031110353960 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 7300.
Frequently asked questions
Who owns 830 NW 73 ST?
The recorded owner on the Miami-Dade County assessment roll (2026) is 830 NW 73 STREET LLC. Owner mailing address on file: 242 NW 42 AVE FLR 4, MIAMI, FL, 33126.
What companies have offices at 830 NW 73 ST?
2 active business locations at this building appear in Miami-Dade County public records, including ADONEL CONCRETE CORP, GERARDO L GARCIA. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 830 NW 73 ST?
The Miami-Dade County roll records 2,660 sq ft of building area, 1 floors, a build year of 1949. It sits on a 29,319 sq ft lot.
What is the assessed value of 830 NW 73 ST?
$1,353,349 on the 2026 Miami-Dade County roll — $1,172,760 land and $180,589 building. Assessed values are taxable-roll figures, not market prices.
When did 830 NW 73 ST last sell?
The last recorded transfer was in Jan 2019 for $1,290,000 ($485 per square foot).
What is the folio for 830 NW 73 ST?
Folio 3031110353960, site address 830 NW 73 ST, Unincorporated County. It is the key to look the parcel up in the Miami-Dade County Property Appraiser — assessment roll.
More around 830 NW 73 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.
- Miami-Dade County building permits, and City of Miami permits since 2014 — Issued permits on the parcel: scope of work, suite where recorded, contractor, status and completion date, plus job cost and square footage from the city's file.
- Miami-Dade County certificates of use — Certificates authorising a business to occupy a space: the date it was issued, the corporate and trading names, the county's business-use label, the suite, and the officers named on the application.
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.
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Dataset updated . Source: Miami-Dade County assessment roll, folio 3031110353960.
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, “830 NW 73 ST, Unincorporated County, FL (folio 3031110353960)”, https://buildingcensus.com/offices/miami/office-building-16c5a083 (data as of October 8, 2026).