Epicenter Apts
Mixed Use Property in Seattle, WA · 620 N 34TH ST · 98103
At a glance
Epicenter Apts is a 225,145-square-foot mixed use property building at 620 N 34TH ST in Seattle, Washington, built in 2002. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 46.7 kBtu/ft² and 48 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 46.7 kBtu/ft² |
| Source EUI | 130.7 kBtu/ft² |
| GHG emissions | 48 tCO₂e |
| GHG intensity | 0.3 kgCO₂e/ft² |
| Electricity | 2,489,687 kWh |
| Gross floor area | 225,145 sq ft |
| Source record | seattle:21134:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 46.7 kBtu/ft² | 48 tCO₂e | |
| 2024 | — | — | — | |
| 2023 | 92 | ±0 | 33.0 kBtu/ft² | 23 tCO₂e |
| 2022 | 92 | +2 | 34.0 kBtu/ft² | 24 tCO₂e |
| 2021 | 90 | +3 | 34.3 kBtu/ft² | 24 tCO₂e |
| 2020 | 87 | -8 | 34.5 kBtu/ft² | 24 tCO₂e |
| 2019 | 95 | ±0 | 31.3 kBtu/ft² | 22 tCO₂e |
| 2018 | 95 | -4 | 30.7 kBtu/ft² | 21 tCO₂e |
| 2017 | 99 | +6 | 27.7 kBtu/ft² | 19 tCO₂e |
| 2016 | 93 | +7 | 30.0 kBtu/ft² | 21 tCO₂e |
| 2015 | 86 | 32.8 kBtu/ft² | 23 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
- 620 N 34TH ST
- City
- Seattle
- State
- Washington
- ZIP
- 98103
- Coordinates
- 47.64985, -122.35046
Within ~1 km
Nearby benchmarked buildings
- Bowman Stonewayscore 99
Multifamily Housing · 426,320 sq ft
- Parkview & Waterside Campusscore —
Office · 404,916 sq ft
- Adobe Building-801-N 34 St.score 74
Office · 280,957 sq ft
Office · 243,334 sq ft
- The Clinescore 100
Multifamily Housing · 209,331 sq ft
- Lakeview At Fremontscore 93
Office · 202,623 sq ft
See also: most efficient in Seattle · biggest emitters
How does Epicenter Apts compare with other mixed use property buildings in Seattle?
The latest disclosures cover 157 mixed use property buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 46.7 kBtu/ft² is about 32% below the average of 68.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.3 kgCO₂e/ft² is about 81% below the group average of 1.4 kgCO₂e/ft².
At 225,145 sq ft, it is about 36% above the average floor area of 165,352 sq ft for those buildings. It was built in 2002, 34 years later than the group's average year built (1968). Across all 24 jurisdictions BuildingCensus covers, the 1,212 mixed use property buildings average an ENERGY STAR score of 69 and a site EUI of 79.8 kBtu/ft².
How has Epicenter Apts's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Epicenter Apts, covering report years 2015–2025. Its ENERGY STAR score went from 86 in 2015 to 92 in 2023 (+6 points); its best year on file was 2017, at 99. Site EUI moved from 32.8 kBtu/ft² (2015) to 46.7 kBtu/ft² (2025), an 42% increase. Reported emissions went from 23 tCO₂e to 48 tCO₂e over the same span (up 112%).
What does a site EUI of 46.7 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. Epicenter Apts's 46.7 kBtu/ft² across 225,145 sq ft works out to about 10.5 billion Btu (3,081 MWh-equivalent) in 2025. Its source EUI of 130.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,489,687 kWh of electricity for the year.
Which law requires Epicenter Apts to report its energy use?
Epicenter Apts 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:21134:2025). 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 mixed use property buildings in Seattle
- Port Of Seattle Bell Harbor Complex & Conference - Campus· 217,088 sq ft · EUI 158.2 kBtu/ft²
- 4225 Roosevelt Bldg- U Of W Med. Center· 196,749 sq ft · EUI 156.1 kBtu/ft²
- Sixth & Wall Building (521 Wall St)· 192,630 sq ft · EUI 35.0 kBtu/ft²
- Elliott Park Building· 190,000 sq ft · EUI 157.2 kBtu/ft²
- Sodo Urban Works· 188,681 sq ft · EUI 153.0 kBtu/ft²
- Commons At Ballard· 178,578 sq ft · score 96 (A)
- Mixed Use Property buildings in Seattle· 157 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 Epicenter Apts's energy grade?
Epicenter Apts did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 46.7 kBtu/ft².
How much energy does Epicenter Apts use?
Its 2025 site energy-use intensity was 46.7 kBtu/ft² (130.7 kBtu/ft² source) across 225,145 sq ft, including 2,489,687 kWh of electricity.
What are Epicenter Apts's carbon emissions?
Epicenter Apts reported 48 tCO₂e of greenhouse-gas emissions (0.3 kgCO₂e/ft²) for 2025.
Where is Epicenter Apts?
Epicenter Apts is at 620 N 34TH ST, in Seattle, Washington 98103. Its coordinates are 47.64985, -122.35046 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Epicenter Apts and when was it built?
Epicenter Apts has 225,145 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2002 as its year built. It is classed as mixed use property.
Is Epicenter Apts 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, “Epicenter Apts, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/epicenter-apts-27909984 (data as of October 2, 2026).