United Airlines
Commercial-Office · Denver · 3309 N SYRACUSE ST
At a glance
United Airlines (3309 N SYRACUSE ST) in Denver, CO is listed on the Denver property roll as “Commercial-Office”, schedule number 0128200014000. The roll records 721,403 sq ft of building area, 5 floors, a 1968 build year and an assessed value of $171,182,200.
Denver assessment roll
Parcel record
| Field | Value |
|---|---|
| schedule number | 0128200014000 |
| Site address | 3309 N SYRACUSE ST |
| Land use (DOR) | 303 — Commercial-Office |
| Building area (actual) | 721,403 sq ft |
| Floors / units / buildings | 5 / — / — |
| Lot size | 935,268 sq ft |
| Year built | 1968 |
| Zoning (primary) | — |
| Land value | $17,536,300 |
| Building value | — |
| Total assessed value | $171,182,200 |
Recorded owner (assessment roll)
UNITED AIRLINES INC
Owner mailing address: PO BOX 6649, CHICAGO, IL, 60680
Location
- Address
- 3309 N SYRACUSE ST
- City
- Denver
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does United Airlines compare with other Denver office buildings?
At 721,403 sq ft, United Airlines is about 14 times the size of the average office building on the Denver roll, which comes to 51,722 sq ft across 2,022 buildings.
Its assessed value works out to $237 per square foot of building area, against $207 across all office floor area on the roll.
What does “Commercial-Office” mean for this parcel?
The Denver roll classifies schedule number 0128200014000 as “Commercial-Office” (use code 303). 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 United Airlines?
The recorded owner on the Denver assessment roll (current) is UNITED AIRLINES INC. Owner mailing address on file: PO BOX 6649, CHICAGO, IL, 60680.
How big is United Airlines?
The Denver roll records 721,403 sq ft of building area, 5 floors, a build year of 1968. It sits on a 935,268 sq ft lot.
What is the assessed value of United Airlines?
$171,182,200 on the Denver roll. Assessed values are taxable-roll figures, not market prices.
What is the schedule number for United Airlines?
Schedule number 0128200014000, site address 3309 N SYRACUSE ST, Denver. It is the key to look the parcel up in the City and County of Denver open-data parcels (Denver).
More around United Airlines
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Denver — City and County of Denver open-data parcels (owner names, mailing addresses, office classes, commercial areas), the recorded sales and transfers table with prices and counterparties, and Energize Denver benchmarking. The city's licence roll covers regulated trades only and carries no premises addresses, 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 Denver 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: Denver assessment roll, schedule number 0128200014000.
About this data
Source: City and County of Denver open-data parcels (Denver), as published September 20, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “United Airlines, Denver, CO (schedule number 0128200014000)”, https://buildingcensus.com/offices/denver/united-airlines-868c6352 (data as of September 20, 2026).