Interstate South Medical Office
Parking in Portland, OR · 3500 WI/ N INTERSTATE AVE
At a glance
Interstate South Medical Office is a 94,446-square-foot parking building at 3500 WI/ N INTERSTATE AVE in Portland, Oregon, built in 1998. In its 2024 Portland benchmarking disclosure it reported a site energy-use intensity of 150.1 kBtu/ft² and 1,065 tCO₂e of greenhouse-gas emissions.
Commercial Building Energy Performance Reporting Policy · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 150.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,065 tCO₂e |
| GHG intensity | — |
| Electricity | 2,253,602 kWh |
| Natural gas | 64,906 therms |
| Gross floor area | 94,446 sq ft |
| Source record | portland_or:1N1E27BB-2200-B1:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 150.1 kBtu/ft² | 1,065 tCO₂e | |
| 2023 | — | 140.5 kBtu/ft² | 940 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
- 3500 WI/ N INTERSTATE 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 Interstate South Medical Office compare with other parking buildings in Portland?
The latest disclosures cover 7 parking buildings in Portland, out of 952 buildings citywide. Its site EUI of 150.1 kBtu/ft² is about 158% above the average of 58.2 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 94,446 sq ft, it is about 71% below the average floor area of 322,020 sq ft for those buildings. It was built in 1998, 12 years later than the group's average year built (1986). Across all 24 jurisdictions BuildingCensus covers, the 1,071 parking buildings average an ENERGY STAR score of 67 and a site EUI of 40.3 kBtu/ft².
How has Interstate South Medical Office's energy performance changed over time?
BuildingCensus holds 2 Portland disclosures for Interstate South Medical Office, covering report years 2023–2024. Site EUI moved from 140.5 kBtu/ft² (2023) to 150.1 kBtu/ft² (2024), an 7% increase. Reported emissions went from 940 tCO₂e to 1,065 tCO₂e over the same span (up 13%).
What does a site EUI of 150.1 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. Interstate South Medical Office's 150.1 kBtu/ft² across 94,446 sq ft works out to about 14.2 billion Btu (4,155 MWh-equivalent) in 2024. The disclosure also reports 2,253,602 kWh of electricity and 64,906 therms of natural gas for the year.
Which law requires Interstate South Medical Office to report its energy use?
Interstate South Medical Office 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:1N1E27BB-2200-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 parking buildings in Portland
Frequently asked questions
What is Interstate South Medical Office's energy grade?
Interstate South Medical Office did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 150.1 kBtu/ft².
How much energy does Interstate South Medical Office use?
Its 2024 site energy-use intensity was 150.1 kBtu/ft² across 94,446 sq ft, including 2,253,602 kWh of electricity and 64,906 therms of natural gas.
What are Interstate South Medical Office's carbon emissions?
Interstate South Medical Office reported 1,065 tCO₂e of greenhouse-gas emissions for 2024.
Where is Interstate South Medical Office?
Interstate South Medical Office is at 3500 WI/ N INTERSTATE AVE, in Portland, Oregon.
How big is Interstate South Medical Office and when was it built?
Interstate South Medical Office has 94,446 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1998 as its year built. It is classed as parking.
Is Interstate South Medical Office 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, “Interstate South Medical Office, Portland, Oregon — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/portland/interstate-south-medical-office-36b489f9 (data as of July 9, 2026).