At a glance
Nippon Kan/Kobe Park Building is a 31,432-square-foot office building at 633 YESLER WAY in Seattle, Washington, built in 1909. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 11 out of 100 (grade D), a site energy-use intensity of 185.1 kBtu/ft² and 240 tCO₂e of greenhouse-gas emissions. That score is higher than 2% of the 378 scored office buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 11 (band D) |
| Site EUI | 185.1 kBtu/ft² |
| Source EUI | 255.5 kBtu/ft² |
| GHG emissions | 240 tCO₂e |
| GHG intensity | 8.2 kgCO₂e/ft² |
| Electricity | 301,745 kWh |
| Natural gas | 44,228 therms |
| Gross floor area | 31,432 sq ft |
| Source record | seattle:26847:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 11 | -63 | 185.1 kBtu/ft² | 240 tCO₂e |
| 2024 | 74 | +13 | 45.0 kBtu/ft² | 28 tCO₂e |
| 2023 | 61 | -6 | 49.8 kBtu/ft² | 21 tCO₂e |
| 2022 | 67 | +2 | 47.6 kBtu/ft² | 24 tCO₂e |
| 2021 | 65 | +5 | 49.0 kBtu/ft² | 25 tCO₂e |
| 2020 | 60 | +11 | 50.1 kBtu/ft² | 21 tCO₂e |
| 2019 | 49 | 56.1 kBtu/ft² | 20 tCO₂e | |
| 2018 | — | 48.8 kBtu/ft² | 9 tCO₂e | |
| 2017 | — | 53.5 kBtu/ft² | 10 tCO₂e | |
| 2016 | — | 45.8 kBtu/ft² | 8 tCO₂e | |
| 2015 | — | 45.4 kBtu/ft² | 8 tCO₂e |
Compliance context
Seattle Energy Benchmarking Ordinance (SMC 22.920)
Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines 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
- 633 YESLER WAY
- City
- Seattle
- State
- Washington
- ZIP
- 98104
- Coordinates
- 47.60105, -122.32542
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Nippon Kan/Kobe Park Building compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Nippon Kan/Kobe Park Building's ENERGY STAR score of 11 compares with an average of 76 across the 378 that report a score; it scores higher than 2% of them and lower than 97%. Its site EUI of 185.1 kBtu/ft² is about 313% above the average of 44.8 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 8.2 kgCO₂e/ft² is about 1066% above the group average of 0.7 kgCO₂e/ft².
At 31,432 sq ft, it is about 84% below the average floor area of 196,452 sq ft for those buildings. It was built in 1909, 56 years earlier than the group's average year built (1965). 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 Nippon Kan/Kobe Park Building's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Nippon Kan/Kobe Park Building, covering report years 2015–2025. Its ENERGY STAR score went from 49 in 2019 to 11 in 2025 (-38 points); its best year on file was 2024, at 74. Site EUI moved from 45.4 kBtu/ft² (2015) to 185.1 kBtu/ft² (2025), an 308% increase. Reported emissions went from 8 tCO₂e to 240 tCO₂e over the same span (up 2796%).
What does an ENERGY STAR score of 11 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 11 means the building performs better than about 11% of its national peers. BuildingCensus bands the score into report-card grades; 11 falls in band D — lowest band (1–54). It sits 64 points below 75, the threshold for ENERGY STAR certification. In Seattle, 69% 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. Nippon Kan/Kobe Park Building's 185.1 kBtu/ft² across 31,432 sq ft works out to about 5.8 billion Btu (1,705 MWh-equivalent) in 2025. Its source EUI of 255.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 301,745 kWh of electricity and 44,228 therms of natural gas for the year.
Which law requires Nippon Kan/Kobe Park Building to report its energy use?
Nippon Kan/Kobe Park Building reports under the Seattle Energy Benchmarking Ordinance (SMC 22.920), the legal basis of Seattle's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record seattle:26847:2025). Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
More office buildings in Seattle
- Northlake Plaza· 31,417 sq ft · score 58 (C)
- Waterworks Office & Marina· 30,840 sq ft · score 17 (D)
- Ballou Wright Building· 30,720 sq ft · EUI 29.0 kBtu/ft²
- Apex Belltown Condominium· 30,700 sq ft · EUI 29.3 kBtu/ft²
- FOURTH & UNION BUILDING/MEN'S WAREHOUSE· 30,525 sq ft
- Office Bldg, 4209 21ST AVE W· 30,172 sq ft · score 92 (A)
- Office buildings in Seattle· 497 benchmarked
- All Seattle benchmarked buildings· Seattle Energy Benchmarking Ordinance (SMC 22.920)
- Most efficient large buildings in Seattle
- Least efficient large buildings in Seattle
- Biggest emitters in Seattle
Frequently asked questions
What is Nippon Kan/Kobe Park Building's energy grade?
Nippon Kan/Kobe Park Building scores 11 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Nippon Kan/Kobe Park Building use?
Its 2025 site energy-use intensity was 185.1 kBtu/ft² (255.5 kBtu/ft² source) across 31,432 sq ft, including 301,745 kWh of electricity and 44,228 therms of natural gas.
What are Nippon Kan/Kobe Park Building's carbon emissions?
Nippon Kan/Kobe Park Building reported 240 tCO₂e of greenhouse-gas emissions (8.2 kgCO₂e/ft²) for 2025.
Where is Nippon Kan/Kobe Park Building?
Nippon Kan/Kobe Park Building is at 633 YESLER WAY, in Seattle, Washington 98104. Its coordinates are 47.60105, -122.32542 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Nippon Kan/Kobe Park Building and when was it built?
Nippon Kan/Kobe Park Building has 31,432 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1909 as its year built. It is classed as office.
Is Nippon Kan/Kobe Park Building covered by the Seattle Energy Benchmarking Ordinance (SMC 22.920)?
Yes — it appears in the 2025 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Seattle Energy Benchmarking Ordinance (SMC 22.920).
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About this data
Source: Building Energy Benchmarking (Seattle Energy Benchmarking Ordinance (SMC 22.920)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Nippon Kan/Kobe Park Building, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/nippon-kan-kobe-park-building-a68985a2 (data as of October 2, 2026).