At a glance
Dekum Building is a 65,948-square-foot office building at 519 SW 3RD AVE in Portland, Oregon, built in 1890. In its 2024 Portland benchmarking disclosure it reported a site energy-use intensity of 33.7 kBtu/ft² and 191 tCO₂e of greenhouse-gas emissions.
Commercial Building Energy Performance Reporting Policy · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 33.7 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 191 tCO₂e |
| GHG intensity | — |
| Electricity | 524,595 kWh |
| Natural gas | 4,323 therms |
| Gross floor area | 65,948 sq ft |
| Source record | portland_or:1N1E34CD-8900-B1:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 33.7 kBtu/ft² | 191 tCO₂e | |
| 2023 | — | 20.0 kBtu/ft² | 100 tCO₂e |
Compliance context
Commercial Building Energy Performance Reporting Policy
Portland requires commercial buildings over 20,000 sq ft to report energy performance annually, with civil penalties for buildings that fail to comply.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 519 SW 3RD AVE
- City
- Portland
- State
- Oregon
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Portland · biggest emitters
How does Dekum Building compare with other office buildings in Portland?
The latest disclosures cover 335 office buildings in Portland, out of 952 buildings citywide. Its site EUI of 33.7 kBtu/ft² is about 29% below the average of 47.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 65,948 sq ft, it is about 35% below the average floor area of 100,908 sq ft for those buildings. It was built in 1890, 67 years earlier than the group's average year built (1957). 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 Dekum Building's energy performance changed over time?
BuildingCensus holds 2 Portland disclosures for Dekum Building, covering report years 2023–2024. Site EUI moved from 20.0 kBtu/ft² (2023) to 33.7 kBtu/ft² (2024), an 69% increase. Reported emissions went from 100 tCO₂e to 191 tCO₂e over the same span (up 91%).
What does a site EUI of 33.7 kBtu/ft² mean?
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. Dekum Building's 33.7 kBtu/ft² across 65,948 sq ft works out to about 2.2 billion Btu (651 MWh-equivalent) in 2024. The disclosure also reports 524,595 kWh of electricity and 4,323 therms of natural gas for the year.
Which law requires Dekum Building to report its energy use?
Dekum Building reports under the Commercial Building Energy Performance Reporting Policy, the legal basis of Portland's Commercial Building Energy Reporting program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record portland_or:1N1E34CD-8900-B1:2024). Portland requires commercial buildings over 20,000 sq ft to report energy performance annually, with civil penalties for buildings that fail to comply.
More office buildings in Portland
- THE RESERVE· 65,728 sq ft · score 70 (B)
- Willamette Park Plaza (273)· 65,239 sq ft · score 49 (D)
- 638 SW 5TH AVE· 64,781 sq ft · EUI 30.0 kBtu/ft²
- Director Building· 64,699 sq ft · score 85 (A)
- EC Corp Office Bldg 1· 63,889 sq ft · score 89 (A)
- United Carriage Building· 63,172 sq ft · EUI 22.1 kBtu/ft²
- Office buildings in Portland· 335 benchmarked
- All Portland benchmarked buildings· Commercial Building Energy Performance Reporting Policy
- Most efficient large buildings in Portland
- Least efficient large buildings in Portland
- Biggest emitters in Portland
Frequently asked questions
What is Dekum Building's energy grade?
Dekum Building did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 33.7 kBtu/ft².
How much energy does Dekum Building use?
Its 2024 site energy-use intensity was 33.7 kBtu/ft² across 65,948 sq ft, including 524,595 kWh of electricity and 4,323 therms of natural gas.
What are Dekum Building's carbon emissions?
Dekum Building reported 191 tCO₂e of greenhouse-gas emissions for 2024.
Where is Dekum Building?
Dekum Building is at 519 SW 3RD AVE, in Portland, Oregon.
How big is Dekum Building and when was it built?
Dekum Building has 65,948 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1890 as its year built. It is classed as office.
Is Dekum Building covered by the Commercial Building Energy Performance Reporting Policy?
Yes — it appears in the 2024 Commercial Building Energy Reporting disclosure, which lists the buildings reporting under the Commercial Building Energy Performance Reporting Policy.
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About this data
Source: Commercial Building Energy Reporting (Commercial Building Energy Performance Reporting Policy), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Dekum Building, Portland, Oregon — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/portland/dekum-building-35d504e0 (data as of July 9, 2026).