3840 MAIN HWY
Office building — one story · Miami · 33133 · Coconut Grove
At a glance
3840 MAIN HWY in Miami, FL is listed on the Miami-Dade County property roll as “Office building — one story”, folio 0141280040070. The roll records 12,998 sq ft of building area, 1 floors, a 1951 build year and an assessed value of $6,598,370 (2026 roll). It last sold for $4,550,000 in Feb 2022.
Permits and tenant turnover — what runs ahead of a listing
Recent activity
| Issued | Suite | Work | Cost | Status | Contractor |
|---|---|---|---|---|---|
| Aug 2026 | — | ELECTRICAL · LOW VOLTAGE SECURITY CAMERAS | $10,000 | Active | JR Telecom Wiring Solutions LLC |
| Apr 2026 | — | SIGN · OWNER IDENTIFICATION SIGNS (NO ELECTRICAL): NEW FOOTING | $50,000 | Final | ALTAFORMA GROUP LLC |
| Feb 2022 | — | BUILDING RECERTIFICATION/MILESTONE INSPECTION · BUILDING RECERTIFICATION/MILESTONE INSPECTION | — | Final | — |
| Dec 2021 | — | REMODELING/REPAIRS · STRUCTURAL REPAIRS | $3,200 | Final | ADIVO CONSTRUCTION CORP |
| Dec 2021 | — | ELECTRICAL · SERVICE REPAIR | $500 | Final | king power systems inc |
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 |
|---|---|---|---|---|
| Feb 2022 | $4,550,000 | 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 — 0 matched business locations
Tenants & business locations
No active business locations at this address appear in the public records ingested so far. That is a statement about the records, not the building: tenants without a county business-tax receipt or a Florida registration at this address are invisible to public data.
Miami-Dade County assessment roll 2026
Parcel record
| Field | Value |
|---|---|
| folio | 0141280040070 |
| Site address | 3840 MAIN HWY |
| Land use (DOR) | 1713 — Office building — one story |
| Building area (actual) | 12,998 sq ft |
| Building area (gross) | 12,998 sq ft |
| Floors / units / buildings | 1 / — / 1 |
| Lot size | 32,040 sq ft |
| Year built | 1951 |
| Zoning (primary) | 0100 |
| Land value | $5,767,200 |
| Building value | $831,170 |
| Total assessed value | $6,598,370 |
Recorded owner (assessment roll)
THE CONVENT OF THE
SACRED HEART OF MIAMI INC
Owner mailing address: 3747 MAIN HIGHWAY, MIAMI, FL, 33133
Location
- Address
- 3840 MAIN HWY
- City
- Miami
- Submarket
- Coconut Grove
- ZIP
- 33133
- Coordinates
- 25.72012, -80.25037
Submarket labels are informal ZIP-derived groupings, not official designations.
Within ~650 m
Nearby office buildings
- 3291 FRANKLIN AVE1 tenants
3,639 sq ft · 1 fl · 1956
- 3516 MAIN HWY1 tenants
2,996 sq ft · 1 fl · 1977
- 3554 MAIN HWY0 tenants
2,263 sq ft · 2 fl · 1988
- 3936 MAIN HWY10 tenants
360 sq ft · 1 fl · 1929
How does 3840 MAIN HWY compare with other Miami office buildings?
At 12,998 sq ft, 3840 MAIN HWY is about 56% smaller than 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 $508 per square foot of building area, against $203 across all office floor area on the roll.
The last recorded sale priced it at $350 per square foot.
What has happened at 3840 MAIN HWY recently?
1 recorded transfer is on file for this parcel, the latest dated Feb 2022.
5 building permits on record, 2 issued in the last 24 months with $60K of declared job value.
What does “OFFICE BUILDING - ONE STORY : OFFICE BUILDING” mean for this parcel?
The Miami-Dade County roll classifies folio 0141280040070 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 0100.
Frequently asked questions
Who owns 3840 MAIN HWY?
The recorded owner on the Miami-Dade County assessment roll (2026) is THE CONVENT OF THE, SACRED HEART OF MIAMI INC. Owner mailing address on file: 3747 MAIN HIGHWAY, MIAMI, FL, 33133.
What companies have offices at 3840 MAIN HWY?
No business locations at this building appear in the public records ingested so far — no licence, tax or registry record currently lists this address; that is a gap in the record, not proof the building is empty.
How big is 3840 MAIN HWY?
The Miami-Dade County roll records 12,998 sq ft of building area, 1 floors, a build year of 1951. It sits on a 32,040 sq ft lot.
What is the assessed value of 3840 MAIN HWY?
$6,598,370 on the 2026 Miami-Dade County roll — $5,767,200 land and $831,170 building. Assessed values are taxable-roll figures, not market prices.
When did 3840 MAIN HWY last sell?
The last recorded transfer was in Feb 2022 for $4,550,000 ($350 per square foot).
What is the folio for 3840 MAIN HWY?
Folio 0141280040070, site address 3840 MAIN HWY, Miami. It is the key to look the parcel up in the Miami-Dade County Property Appraiser — assessment roll.
More around 3840 MAIN HWY
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.
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 0141280040070.
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, “3840 MAIN HWY, Miami, FL (folio 0141280040070)”, https://buildingcensus.com/offices/miami/office-building-47913b2d (data as of October 8, 2026).