521 W BAY ST
Office · Tampa · 33606
At a glance
521 W BAY ST in Tampa, FL is listed on the Tampa / Hillsborough County property roll as “Office”, parcel ID 391829244ZX000016000040A. The roll records 511 sq ft of building area, a 1990 build year and an assessed value of $596,885.
Tampa / Hillsborough County assessment roll
Parcel record
| Field | Value |
|---|---|
| parcel ID | 391829244ZX000016000040A |
| Site address | 521 W BAY ST |
| Land use (DOR) | 023 — Office |
| Building area (actual) | 511 sq ft |
| Floors / units / buildings | — / — / 1 |
| Lot size | 6,897 sq ft |
| Year built | 1990 |
| Zoning (primary) | — |
| Land value | $467,280 |
| Building value | — |
| Total assessed value | $596,885 |
Recorded owner (assessment roll)
HIGHWOODS PROPERTIES INC TRUST
Owner mailing address: 150 FAYETTEVILLE ST STE 1400, RALEIGH, NC, 27601
21 Tampa 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
- 521 W BAY ST
- City
- Tampa
- ZIP
- 33606
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 521 W BAY ST compare with other Tampa office buildings?
At 511 sq ft, 521 W BAY ST is less than a tenth the size of the average office building on the Tampa / Hillsborough County roll, which comes to 14,851 sq ft across 5,432 buildings.
Its assessed value works out to $1168 per square foot of building area, against $141 across all office floor area on the roll.
Does the owner of 521 W BAY ST hold other Tampa office property?
21 Tampa office properties (21 parcels, 6.3M sq ft) are recorded to 8 owner entities sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What does “Office” mean for this parcel?
The Tampa / Hillsborough County roll classifies parcel ID 391829244ZX000016000040A as “Office” (use code 023). 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.
Frequently asked questions
Who owns 521 W BAY ST?
The recorded owner on the Tampa / Hillsborough County assessment roll (current) is HIGHWOODS PROPERTIES INC TRUST. Owner mailing address on file: 150 FAYETTEVILLE ST STE 1400, RALEIGH, NC, 27601.
How big is 521 W BAY ST?
The Tampa / Hillsborough County roll records 511 sq ft of building area, a build year of 1990. It sits on a 6,897 sq ft lot.
What is the assessed value of 521 W BAY ST?
$596,885 on the Tampa / Hillsborough County roll. Assessed values are taxable-roll figures, not market prices.
What is the parcel ID for 521 W BAY ST?
Parcel ID 391829244ZX000016000040A, site address 521 W BAY ST, Tampa. It is the key to look the parcel up in the Florida DOR NAL assessment roll for Hillsborough County (Tampa / Hillsborough County).
More around 521 W BAY ST
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Tampa / Hillsborough County — Florida DOR NAL assessment roll for Hillsborough County: owner names, mailing addresses, values, and recorded sales with price at month precision. The county's local business tax roll is not yet ingested, so no tenant layer yet.
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: Tampa / Hillsborough County assessment roll, parcel ID 391829244ZX000016000040A.
About this data
Source: Florida DOR NAL assessment roll for Hillsborough County (Tampa / Hillsborough County), as published September 20, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “521 W BAY ST, Tampa, FL (parcel ID 391829244ZX000016000040A)”, https://buildingcensus.com/offices/tampa/office-building-03fea834 (data as of September 20, 2026).