At a glance
Empire Park Realty Investments Llc is a 151,875-square-foot office building at 1355 South Colorado Blvd. in Denver, Colorado, built in 1979. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 58 out of 100 (grade C), a site energy-use intensity of 82.3 kBtu/ft² and 1,358 tCO₂e of greenhouse-gas emissions. That score is higher than 20% of the 339 scored office buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 58 (band C) |
| Site EUI | 82.3 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,358 tCO₂e |
| GHG intensity | — |
| Electricity | 1,997,976 kWh |
| Natural gas | 56,748 therms |
| Gross floor area | 151,875 sq ft |
| Source record | denver:3690:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 58 | +2 | 82.3 kBtu/ft² | 1,358 tCO₂e |
| 2022 | 56 | -8 | 82.2 kBtu/ft² | 1,389 tCO₂e |
| 2021 | 64 | 63.5 kBtu/ft² | 1,342 tCO₂e |
Compliance context
Energize Denver Building Performance Policy
Energize Denver sets energy-use (EUI) targets for buildings of 25,000+ sq ft — for most buildings an interim target in 2028 and a final target in 2032 — with civil penalties of roughly $0.15–0.35 per kBtu over target for non-compliance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 1355 South Colorado Blvd.
- City
- Denver
- State
- Colorado
- ZIP
- 80222
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Denver · biggest emitters
How does Empire Park Realty Investments Llc compare with other office buildings in Denver?
The latest disclosures cover 427 office buildings in Denver, out of 3,287 buildings citywide. Empire Park Realty Investments Llc's ENERGY STAR score of 58 compares with an average of 71 across the 339 that report a score; it scores higher than 20% of them and lower than 79%. Its site EUI of 82.3 kBtu/ft² is about 23% above the average of 67.1 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 151,875 sq ft, it is roughly in line with the average floor area of 157,927 sq ft for those buildings. Its 1979 construction date is close to the group's average year built (1980). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has Empire Park Realty Investments Llc's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for Empire Park Realty Investments Llc, covering report years 2021–2023. Its ENERGY STAR score went from 64 in 2021 to 58 in 2023 (-6 points); its best year on file was 2021, at 64. Site EUI moved from 63.5 kBtu/ft² (2021) to 82.3 kBtu/ft² (2023), an 30% increase. Reported emissions went from 1,342 tCO₂e to 1,358 tCO₂e over the same span (up 1%).
What does an ENERGY STAR score of 58 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 58 means the building performs better than about 58% of its national peers. BuildingCensus bands the score into report-card grades; 58 falls in band C — below median (55–69). It sits 17 points below 75, the threshold for ENERGY STAR certification. In Denver, 54% of scored buildings are at 75 or above.
Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. Empire Park Realty Investments Llc's 82.3 kBtu/ft² across 151,875 sq ft works out to about 12.5 billion Btu (3,663 MWh-equivalent) in 2023. The disclosure also reports 1,997,976 kWh of electricity and 56,748 therms of natural gas for the year.
Which law requires Empire Park Realty Investments Llc to report its energy use?
Empire Park Realty Investments Llc reports under the Energize Denver Building Performance Policy, the legal basis of Denver's Energize Denver Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2023 disclosure (source record denver:3690:2023). Energize Denver sets energy-use (EUI) targets for buildings of 25,000+ sq ft — for most buildings an interim target in 2028 and a final target in 2032 — with civil penalties of roughly $0.15–0.35 per kBtu over target for non-compliance.
More office buildings in Denver
- 1630 Welton Level Office Llc· 151,200 sq ft · score 97 (A)
- Speer Denver Tower, Llc· 147,506 sq ft · score 74 (B)
- 120667_Denver Motorbank· 145,126 sq ft · score 37 (D)
- The Citadel· 144,493 sq ft · score 84 (B)
- 4350 South Monaco· 144,048 sq ft · score 71 (B)
- Tamarac Plaza 2· 144,026 sq ft · score 76 (B)
- Office buildings in Denver· 427 benchmarked
- All Denver benchmarked buildings· Energize Denver Building Performance Policy
- Most efficient large buildings in Denver
- Least efficient large buildings in Denver
- Biggest emitters in Denver
Frequently asked questions
What is Empire Park Realty Investments Llc's energy grade?
Empire Park Realty Investments Llc scores 58 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2023 Denver disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Empire Park Realty Investments Llc use?
Its 2023 site energy-use intensity was 82.3 kBtu/ft² across 151,875 sq ft, including 1,997,976 kWh of electricity and 56,748 therms of natural gas.
What are Empire Park Realty Investments Llc's carbon emissions?
Empire Park Realty Investments Llc reported 1,358 tCO₂e of greenhouse-gas emissions for 2023.
Where is Empire Park Realty Investments Llc?
Empire Park Realty Investments Llc is at 1355 South Colorado Blvd., in Denver, Colorado 80222.
How big is Empire Park Realty Investments Llc and when was it built?
Empire Park Realty Investments Llc has 151,875 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1979 as its year built. It is classed as office.
Is Empire Park Realty Investments Llc covered by the Energize Denver Building Performance Policy?
Yes — it appears in the 2023 Energize Denver Benchmarking disclosure, which lists the buildings reporting under the Energize Denver Building Performance Policy.
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About this data
Source: Energize Denver Benchmarking (Energize Denver Building Performance Policy), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Empire Park Realty Investments Llc, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/empire-park-realty-investments-llc-34486826 (data as of July 9, 2026).