At a glance
Alderway Building is a 46,766-square-foot office building at 521-539 SW BROADWAY in Portland, Oregon, built in 1929. In its 2024 Portland benchmarking disclosure it reported a site energy-use intensity of 23.6 kBtu/ft² and 133 tCO₂e of greenhouse-gas emissions.
Commercial Building Energy Performance Reporting Policy · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 23.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 133 tCO₂e |
| GHG intensity | — |
| Electricity | 208,320 kWh |
| Natural gas | 3,950 therms |
| Gross floor area | 46,766 sq ft |
| Source record | portland_or:1N1E34CC-6800-B1:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 23.6 kBtu/ft² | 133 tCO₂e | |
| 2023 | — | 24.1 kBtu/ft² | 143 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
- 521-539 SW BROADWAY
- 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 Alderway 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 23.6 kBtu/ft² is about half of the average of 47.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 46,766 sq ft, it is about half of the average floor area of 100,908 sq ft for those buildings. It was built in 1929, 28 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 Alderway Building's energy performance changed over time?
BuildingCensus holds 2 Portland disclosures for Alderway Building, covering report years 2023–2024. Site EUI moved from 24.1 kBtu/ft² (2023) to 23.6 kBtu/ft² (2024), a 2% decrease. Reported emissions went from 143 tCO₂e to 133 tCO₂e over the same span (down 7%).
What does a site EUI of 23.6 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. Alderway Building's 23.6 kBtu/ft² across 46,766 sq ft works out to about 1.1 billion Btu (323 MWh-equivalent) in 2024. The disclosure also reports 208,320 kWh of electricity and 3,950 therms of natural gas for the year.
Which law requires Alderway Building to report its energy use?
Alderway 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:1N1E34CC-6800-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
- Glass Lab (350 SE MILL ST)· 46,395 sq ft · EUI 35.2 kBtu/ft²
- 1121 SW SALMON ST· 46,050 sq ft · score 45 (D)
- 5550 Macadam· 45,986 sq ft · score 38 (D)
- 3030 Building at South Waterfront· 45,594 sq ft · score 79 (B)
- 1400 NW 22ND AVE· 45,000 sq ft · score 95 (A)
- 809 NW FLANDERS ST· 45,000 sq ft · score 73 (B)
- 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 Alderway Building's energy grade?
Alderway Building did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 23.6 kBtu/ft².
How much energy does Alderway Building use?
Its 2024 site energy-use intensity was 23.6 kBtu/ft² across 46,766 sq ft, including 208,320 kWh of electricity and 3,950 therms of natural gas.
What are Alderway Building's carbon emissions?
Alderway Building reported 133 tCO₂e of greenhouse-gas emissions for 2024.
Where is Alderway Building?
Alderway Building is at 521-539 SW BROADWAY, in Portland, Oregon.
How big is Alderway Building and when was it built?
Alderway Building has 46,766 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1929 as its year built. It is classed as office.
Is Alderway 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, “Alderway Building, Portland, Oregon — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/portland/alderway-building-bad39e2a (data as of July 9, 2026).