256 NW 42 AVE
Office building — one story · Miami · 33126 · Airport West / Blue Lagoon
At a glance
256 NW 42 AVE in Miami, FL is listed on the Miami-Dade County property roll as “Office building — one story”, folio 0141050120010. The roll records 1,672 sq ft of building area, 1 floors, a 1939 build year and an assessed value of $751,369 (2026 roll). It last sold for $100 in Nov 2019. 3 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 |
|---|---|---|---|---|---|
| May 2025 | — | SIGN · BOX SIGN | $8,000 | Final | AMAZING SIGNS & SERVICES LLC |
| May 2025 | — | SIGN · OWNER IDENTIFICATION SIGNS (ELECTRICAL): NEW SINGLE FACED | $2,000 | Final | AMAZING SIGNS & SERVICES LLC |
| May 2025 | — | SIGN · CHANNEL LETTERS | $1,900 | Final | AMAZING SIGNS & SERVICES LLC |
| May 2025 | — | SIGN · OWNER IDENTIFICATION SIGNS (ELECTRICAL): NEW SINGLE FACED | $1,900 | Final | AMAZING SIGNS & SERVICES LLC |
| Apr 2019 | — | BUILDING RECERTIFICATION/MILESTONE INSPECTION · BUILDING RECERTIFICATION/MILESTONE INSPECTION | — | Final | — |
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 |
|---|---|---|---|---|
| Nov 2019 | $100 | 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 — 4 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| T-MOBILE SOUTHvia T MOBILE SOUTH | — | Nov 2017 | County business tax | address match · high |
| T-MOBILE | — | Nov 2017 | County business tax | address match · high |
| T-MOBILE FINANCIAL LLC | — | Nov 2017 | County business tax | address match · high |
Former / closed records (1)
| Company | Suite | Since | Source |
|---|---|---|---|
| T-MOBILE LEASING LLC | — | Nov 2017 | County business tax |
Miami-Dade County assessment roll 2026
Parcel record
| Field | Value |
|---|---|
| folio | 0141050120010 |
| Site address | 256 NW 42 AVE |
| Land use (DOR) | 1713 — Office building — one story |
| Building area (actual) | 1,672 sq ft |
| Building area (gross) | 1,672 sq ft |
| Floors / units / buildings | 1 / 1 / 1 |
| Lot size | 6,800 sq ft |
| Year built | 1939 |
| Zoning (primary) | 6100 |
| Land value | $578,000 |
| Building value | $173,369 |
| Total assessed value | $751,369 |
Recorded owner (assessment roll)
JJ VALLE LLC
Owner mailing address: 1553 SAN IGNACIO AVE, CORAL GABLES, FL, 33146
7 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
- 256 NW 42 AVE
- City
- Miami
- Submarket
- Airport West / Blue Lagoon
- ZIP
- 33126
- Coordinates
- 25.77452, -80.26409
Submarket labels are informal ZIP-derived groupings, not official designations.
Within ~650 m
Nearby office buildings
- 4201 NW 7 ST34 tenants
694,828 sq ft · 6 fl · 1983
- 4200 W FLAGLER ST4 tenants
352,368 sq ft · 4 fl · 1964
- 850 NW 42 AVE207 tenants
216,910 sq ft · 5 fl · 2021
- 4343 W FLAGLER ST10 tenants
56,853 sq ft · 5 fl · 1983
- 4000 W FLAGLER ST11 tenants
54,410 sq ft · 5 fl · 1987
- 4231 W FLAGLER ST1 tenants
52,343 sq ft · 7 fl · 1972
How does 256 NW 42 AVE compare with other Miami office buildings?
At 1,672 sq ft, 256 NW 42 AVE 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 $449 per square foot of building area, against $203 across all office floor area on the roll.
The last recorded sale priced it at $0 per square foot.
Does the owner of 256 NW 42 AVE hold other Miami office property?
7 Miami office properties (7 parcels, 53.4K sq ft) are recorded to 6 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 256 NW 42 AVE recently?
1 recorded transfer is on file for this parcel, the latest dated Nov 2019.
5 building permits on record, 4 issued in the last 24 months with $13.8K of declared job value.
In the last 12 months 0 businesses opened a receipt here and 1 closed one.
What does “OFFICE BUILDING - ONE STORY : OFFICE BUILDING” mean for this parcel?
The Miami-Dade County roll classifies folio 0141050120010 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 6100.
Frequently asked questions
Who owns 256 NW 42 AVE?
The recorded owner on the Miami-Dade County assessment roll (2026) is JJ VALLE LLC. Owner mailing address on file: 1553 SAN IGNACIO AVE, CORAL GABLES, FL, 33146.
What companies have offices at 256 NW 42 AVE?
3 active business locations at this building appear in Miami-Dade County public records, including T-MOBILE SOUTH, T-MOBILE, T-MOBILE FINANCIAL LLC. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 256 NW 42 AVE?
The Miami-Dade County roll records 1,672 sq ft of building area, 1 floors, a build year of 1939. It sits on a 6,800 sq ft lot.
What is the assessed value of 256 NW 42 AVE?
$751,369 on the 2026 Miami-Dade County roll — $578,000 land and $173,369 building. Assessed values are taxable-roll figures, not market prices.
When did 256 NW 42 AVE last sell?
The last recorded transfer was in Nov 2019 for $100 ($0 per square foot).
What is the folio for 256 NW 42 AVE?
Folio 0141050120010, site address 256 NW 42 AVE, Miami. It is the key to look the parcel up in the Miami-Dade County Property Appraiser — assessment roll.
More around 256 NW 42 AVE
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 0141050120010.
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, “256 NW 42 AVE, Miami, FL (folio 0141050120010)”, https://buildingcensus.com/offices/miami/office-building-ee6d9339 (data as of October 8, 2026).