BuildingCensus
D

505 UNION STATION

Office in Seattle, WA · 505 5TH AVE S · 98104

ENERGY STAR score
39
band D · 2024
Site EUI
56.8
kBtu/ft²
GHG emissions
96
tCO₂e
GHG intensity
0.3
kgCO₂e/ft²
Floor area
312,512
sq ft
Year built
2000
vintage
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85–10070–8455–691–54
This entry + 6 nearby

Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2024

Benchmarking record

FieldValue
ENERGY STAR score39 (band D)
Site EUI56.8 kBtu/ft²
Source EUI159.0 kBtu/ft²
GHG emissions96 tCO₂e
GHG intensity0.3 kgCO₂e/ft²
Electricity4,854,640 kWh
Gross floor area312,512 sq ft
Source recordseattle:658:2024

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2024latest39+756.8 kBtu/ft²96 tCO₂e
202332+476.0 kBtu/ft²129 tCO₂e
202228-479.7 kBtu/ft²135 tCO₂e
202132-3175.9 kBtu/ft²128 tCO₂e
202063-271.8 kBtu/ft²129 tCO₂e
201965+1169.4 kBtu/ft²132 tCO₂e
20185478.2 kBtu/ft²149 tCO₂e
201777.8 kBtu/ft²147 tCO₂e
201682.4 kBtu/ft²155 tCO₂e
201584.2 kBtu/ft²162 tCO₂e

Compliance context

Seattle Energy Benchmarking Ordinance (SMC 22.920)

Seattle's Building Emissions Performance Standard (2023) sets declining carbon targets for buildings over 20,000 sq ft, with penalties for non-compliance beginning in the 2030s.

Program details →

Ownership

No owner listed in the disclosure.

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Location

Address
505 5TH AVE S
State
Washington
ZIP
98104
Coordinates
47.59865, -122.32854

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Seattle · biggest emitters

Frequently asked questions

What is 505 UNION STATION's energy grade?

505 UNION STATION scores 39 out of 100 on ENERGY STAR — band D (Lowest band (1–54)) — in its 2024 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.

How much energy does 505 UNION STATION use?

Its 2024 site energy-use intensity was 56.8 kBtu/ft² (159.0 kBtu/ft² source) across 312,512 sq ft, including 4,854,640 kWh of electricity.

What are 505 UNION STATION's carbon emissions?

505 UNION STATION reported 96 tCO₂e of greenhouse-gas emissions (0.3 kgCO₂e/ft²) for 2024. Seattle's Building Emissions Performance Standard (2023) sets declining carbon targets for buildings over 20,000 sq ft, with penalties for non-compliance beginning in the 2030s.

Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:658:2024.