733 ST ANTOINE
Office Bldg--3 Stories Or Less · Detroit · 48226
At a glance
733 ST ANTOINE in Detroit, MI is listed on the Detroit property roll as “Office Bldg--3 Stories Or Less”, parcel ID 0300340715. The roll records 22,540 sq ft of building area, a 1897 build year and an assessed value of $1,127,400.
Detroit assessment roll
Parcel record
| Field | Value |
|---|---|
| parcel ID | 0300340715 |
| Site address | 733 ST ANTOINE |
| Land use (DOR) | — Office Bldg--3 Stories Or Less |
| Building area (actual) | 22,540 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | — |
| Year built | 1897 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $1,127,400 |
Recorded owner (assessment roll)
BLUE CROSS/BLUE SHIELD OF MICHIGAN
MAIL CODE 1209
Owner mailing address: 600 E LAFAYETTE, DETROIT, MI, 48226
3 Detroit 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
- 733 ST ANTOINE
- City
- Detroit
- ZIP
- 48226
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 733 ST ANTOINE compare with other Detroit office buildings?
At 22,540 sq ft, 733 ST ANTOINE is about 45% smaller than the average office building on the Detroit roll, which comes to 40,771 sq ft across 1,416 buildings.
Its assessed value works out to $50 per square foot of building area, against $22 across all office floor area on the roll.
Does the owner of 733 ST ANTOINE hold other Detroit office property?
3 Detroit office properties (3 parcels, 2.2M sq ft) are recorded to an owner sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What does “Office Bldg--3 Stories Or Less” mean for this parcel?
The Detroit roll classifies parcel ID 0300340715 as “Office Bldg--3 Stories Or Less”. 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 733 ST ANTOINE?
The recorded owner on the Detroit assessment roll (current) is BLUE CROSS/BLUE SHIELD OF MICHIGAN, MAIL CODE 1209. Owner mailing address on file: 600 E LAFAYETTE, DETROIT, MI, 48226.
How big is 733 ST ANTOINE?
The Detroit roll records 22,540 sq ft of building area, a build year of 1897.
What is the assessed value of 733 ST ANTOINE?
$1,127,400 on the Detroit roll. Assessed values are taxable-roll figures, not market prices.
What is the parcel ID for 733 ST ANTOINE?
Parcel ID 0300340715, site address 733 ST ANTOINE, Detroit. It is the key to look the parcel up in the City of Detroit open-data parcel roll (Detroit).
More around 733 ST ANTOINE
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Detroit — City of Detroit open-data parcel roll (taxpayer names and mailing addresses, nightly), the assessor sales view with prices and counterparties, and the city's energy benchmarking ordinance datasets. The licence roll covers regulated trades only, so no tenant layer is possible.
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.
Working with Detroit office parcels? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
Dataset updated . Source: Detroit assessment roll, parcel ID 0300340715.
About this data
Source: City of Detroit open-data parcel roll (Detroit), as published September 21, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “733 ST ANTOINE, Detroit, MI (parcel ID 0300340715)”, https://buildingcensus.com/offices/detroit/office-building-2850e598 (data as of September 21, 2026).