3300 E 1St Ave
Commercial-Office · Denver · 80206 · 3300 E 1ST AVE
At a glance
3300 E 1St Ave (3300 E 1ST AVE) in Denver, CO is listed on the Denver property roll as “Commercial-Office”, schedule number 0512507183000. The roll records 98,876 sq ft of building area, 6 floors, a 1978 build year and an assessed value of $34,532,800. It last sold for $37,550,000 in May 2018.
Recorded transfers — county roll + state sale file
Sale history
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| May 2018 | $37,550,000 | not rated | County roll | — |
Prices are the consideration recorded in Denver's public property records. Where a qualification code exists it is the assessor's judgement of whether a transfer was arm's length; transfers without one 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.
Denver assessment roll
Parcel record
| Field | Value |
|---|---|
| schedule number | 0512507183000 |
| Site address | 3300 E 1ST AVE |
| Land use (DOR) | 303 — Commercial-Office |
| Building area (actual) | 98,876 sq ft |
| Floors / units / buildings | 6 / — / — |
| Lot size | 46,894 sq ft |
| Year built | 1978 |
| Zoning (primary) | — |
| Land value | $10,551,200 |
| Building value | — |
| Total assessed value | $34,532,800 |
Recorded owner (assessment roll)
GRE 3300 EAST 1ST AVENUE OWNER LLC
Owner mailing address: 900 N MICHIGAN AVE STE 1450, CHICAGO, IL, 60611
2 Denver 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
- 3300 E 1ST AVE
- City
- Denver
- ZIP
- 80206
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 3300 E 1St Ave compare with other Denver office buildings?
At 98,876 sq ft, 3300 E 1St Ave is about twice 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 $349 per square foot of building area, against $207 across all office floor area on the roll.
The last recorded sale priced it at $380 per square foot.
Does the owner of 3300 E 1St Ave hold other Denver office property?
2 Denver office properties (2 parcels, 876.1K sq ft) are recorded to 2 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 3300 E 1St Ave recently?
1 recorded transfer is on file for this parcel, the latest dated May 2018.
What does “Commercial-Office” mean for this parcel?
The Denver roll classifies schedule number 0512507183000 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 3300 E 1St Ave?
The recorded owner on the Denver assessment roll (current) is GRE 3300 EAST 1ST AVENUE OWNER LLC. Owner mailing address on file: 900 N MICHIGAN AVE STE 1450, CHICAGO, IL, 60611.
How big is 3300 E 1St Ave?
The Denver roll records 98,876 sq ft of building area, 6 floors, a build year of 1978. It sits on a 46,894 sq ft lot.
What is the assessed value of 3300 E 1St Ave?
$34,532,800 on the Denver roll. Assessed values are taxable-roll figures, not market prices.
When did 3300 E 1St Ave last sell?
The last recorded transfer was in May 2018 for $37,550,000 ($380 per square foot).
What is the schedule number for 3300 E 1St Ave?
Schedule number 0512507183000, site address 3300 E 1ST AVE, Denver. It is the key to look the parcel up in the City and County of Denver open-data parcels (Denver).
More around 3300 E 1St Ave
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.
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Dataset updated . Source: Denver assessment roll, schedule number 0512507183000.
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, “3300 E 1St Ave, Denver, CO (schedule number 0512507183000)”, https://buildingcensus.com/offices/denver/3300-e-1st-ave-ecfa48b7 (data as of September 20, 2026).