Miami commercial building operations research
Miami–Fort Lauderdale–West Palm Beach, FL MSA · CBSA 33100
OMB Bulletin 23-01 / July 2023 delineation
STATESFlorida
Factum has completed a bounded, reproducible Miami-Dade building-footprint audit, not a metro building census. The current official BuildingList2024_50kplus layer contains 5,665 footprint rows, 5,649 distinct nonblank UBIDs and 4,067 distinct folios. The prior 3,497-folio candidate denominator is not reproducible from the public source contract and is withdrawn from current use. Broward and Palm Beach remain uncovered.
What the current denominator means
This Public Seed keeps building-footprint records, UBIDs, assessment folios, parent folios, parcels, physical buildings and campuses separate. An ordered 5,665-row OBJECTID/UBID/FOLIO/PARENT_FOLIO manifest is preserved as a 535,358-byte UTF-8 artifact with SHA-256 b407c2f571b7929d5b8dbeb82517ee9423221ba92ca57f1703b04ac313fcf7d1. The rows include 854 folios with multiple footprints and 16 duplicate-UBID excess rows. Six deterministic 25-folio batches returned 150 exact Property Appraiser folio identities without a failed request or conflicting return. Five folios in positions 126–150 each retain two footprint rows; none of these assessment matches collapses footprint, parcel or building identity.
Miami-Dade 50,000-plus footprint rows
Official BuildingList2024_50kplus feature rows satisfying LIVING_AREA greater than or equal to 50,000. A footprint row is not automatically one physical building or one assessment property.
Distinct nonblank UBIDs
Distinct UBID values across the bounded footprint layer. Sixteen excess rows share a UBID with another row and remain duplicate candidates rather than accepted merges.
Distinct folios linked to footprint rows
Miami-Dade Property Appraiser folio identifiers present on the 5,665 footprint rows. A folio identifies assessment property or parcel grain, not necessarily a building.
One-footprint folios
Folios appearing on exactly one row in this footprint layer. This cardinality does not prove a one-parcel or one-building identity.
Multi-footprint folios
Folios linked to more than one footprint row, with a maximum of 23 rows for one folio. Every one-to-many state is preserved for identity review.
County UBID source rows
Rows in the broader official county UBID Building Footprints layer. It is source context, not the 50,000-square-foot cohort and not a metro-wide building denominator.
Deterministic assessment-reconciliation receipts
The first 150 lexicographically ordered distinct folios each returned an exact folio identity from the official Property Appraiser service across six bounded batches, with no request failure or conflicting return. Five folios in positions 126–150 each retain two source footprint rows, and all selected manifest and returned Property Appraiser parent-folio fields in that batch were empty. The batches retain source DOR classification, site address, legal description and parent-folio fields for each response. These receipts validate the bounded assessment lookup path only; they do not merge footprint, parcel or building identities or define DOR eligibility.
Questions this page answers
Compact answers are rendered in visible HTML and structured data so people and answer engines can retrieve the same claims and caveats.
01How many large Miami buildings did Factum find?+
Factum has not accepted a physical-building count. The bounded official layer has 5,665 footprint rows linked to 5,649 distinct UBIDs and 4,067 assessment folios; those are different source grains.
02Why was the prior 3,497-folio denominator withdrawn?+
The public source contract and exact predicate needed to reproduce that cohort were not retained. The current official 50,000-plus layer instead reproduces 5,665 footprint rows and 4,067 folios, so Factum will not reverse-engineer or relabel an unsupported subset.
03Does one UBID equal one verified building?+
Not yet. Miami-Dade describes UBID as a building identifier derived from footprint geometry, but the live bounded layer has 16 excess rows in duplicate-UBID groups. Those conflicts require review before a uniqueness or building-identity claim.
04Does one folio equal one building?+
No. The Property Appraiser defines a folio as a 13-digit property or parcel identifier. In this slice, 854 folios link to multiple footprint rows, so folio, footprint and building identities remain separate.
05Do Florida DOR codes define the eligible building universe?+
No. They are assessment land-use classifications and may include local four-digit refinements. Any project allow or deny mapping remains provisional until its exact codebook and selection contract are accepted.
06Does this cover the full Miami metro?+
No. Miami-Dade is one of three counties in the MSA. Broward and Palm Beach require separate official enumeration and reconciliation.
07Can these records be used for dispatch?+
No. This bounded source packet has zero Graph Mapped, Verified or Dispatch Ready records and contains no operating rules.
08Is there now a reproducible Miami-Dade source manifest?+
Yes. The ordered OBJECTID, UBID, FOLIO and PARENT_FOLIO projection contains 5,665 rows and is preserved as a 535,358-byte UTF-8 artifact with SHA-256 b407c2f571b7929d5b8dbeb82517ee9423221ba92ca57f1703b04ac313fcf7d1. All PARENT_FOLIO values were blank in this bounded layer; that is an observed source state, not a parent-child inference.
09How much of the Miami-Dade assessment lookup has been checked?+
The first 150 lexicographically ordered distinct folios have been checked in six reproducible batches. All 150 returned the requested folio identity from the official Property Appraiser service. This is a source-path check, not a claim that a folio equals a building, that a source DOR class is project-eligible or that the metro census is complete.
Explicit unknowns
These are active research requirements—not footnotes to be smoothed over.
- 01The exact selection predicate, immutable folio list and checksum behind the prior 3,497-folio claim.
- 02Resolution of the 16 duplicate-UBID excess rows and every multi-footprint folio.
- 03Assessment-side match, unmatched and DOR-code distributions for the 4,067 folios.
- 04The documented operational meaning of PARENT_FOLIO in the selected public layers; no parent value was populated in the bounded footprint layer.
- 05Assessment-side outcomes and DOR distributions beyond the first 150 lexicographically ordered folios.
- 06Official source enumeration and cross-source reconciliation for Broward and Palm Beach counties.
- 07Physical-building and campus identity, ownership, management, operating rules and dispatch-critical evidence for all candidates.
Sources and scope
Public-page claims are limited to what the cited sources support. Source records, parcels, accounts, footprints, campuses, and physical buildings remain distinct identities until reconciled.
- 01Miami-Dade County — BuildingList2024_50kplus ↗
Miami-Dade County · Supports: Bounded footprint rows, UBID and folio cardinalities, source predicate and one-to-many identity review
- 02Miami-Dade County — UBID Building Footprints ↗
Miami-Dade County · Supports: Countywide UBID source context and geometry-derived identifier semantics
- 03Miami-Dade County — Property Boundaries ↗
Miami-Dade County · Supports: Independent assessment-side FOLIO, PARENT_FOLIO, DOR_CODE_CUR and DOR_DESC reconciliation path
- 04Miami-Dade Property Appraiser — folio numbers ↗
Miami-Dade County Property Appraiser · Supports: Official 13-digit folio identifier semantics
- 05Miami-Dade Property Appraiser — property-search service ↗
Miami-Dade County Property Appraiser · Supports: Exact folio-return receipts and source-reported DOR classification, site address, legal description and parent-folio fields for the first 150 ordered folios
- 06Florida Department of Revenue — assessment roll and GIS data ↗
Florida Department of Revenue · Supports: State assessment-roll publication path and future independent code and folio reconciliation
- 07U.S. Census Bureau metropolitan delineation files ↗
Federal government · Supports: Canonical CBSA identity and boundary vintage