Tramonti At Lake Union Condominium
Multifamily Housing in Seattle, WA · 2920 EASTLAKE AVE E · 98102
At a glance
Tramonti At Lake Union Condominium is a 62,504-square-foot multifamily housing building at 2920 EASTLAKE AVE E in Seattle, Washington, built in 2004. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 71 out of 100 (grade B), a site energy-use intensity of 35.1 kBtu/ft² and 28 tCO₂e of greenhouse-gas emissions. That score is higher than 19% of the 1,652 scored multifamily housing buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 71 (band B) |
| Site EUI | 35.1 kBtu/ft² |
| Source EUI | 80.7 kBtu/ft² |
| GHG emissions | 28 tCO₂e |
| GHG intensity | 0.7 kgCO₂e/ft² |
| Electricity | 314,460 kWh |
| Natural gas | 4,276 therms |
| Gross floor area | 62,504 sq ft |
| Source record | seattle:23560:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 71 | +1 | 35.1 kBtu/ft² | 28 tCO₂e |
| 2024 | 70 | -5 | 35.2 kBtu/ft² | 29 tCO₂e |
| 2023 | 75 | ±0 | 35.2 kBtu/ft² | 31 tCO₂e |
| 2022 | 75 | -3 | 36.9 kBtu/ft² | 34 tCO₂e |
| 2021 | 78 | -12 | 35.0 kBtu/ft² | 31 tCO₂e |
| 2020 | 90 | -3 | 35.2 kBtu/ft² | 32 tCO₂e |
| 2019 | 93 | +3 | 34.3 kBtu/ft² | 33 tCO₂e |
| 2018 | 90 | -1 | 26.3 kBtu/ft² | 30 tCO₂e |
| 2017 | 91 | +41 | 27.9 kBtu/ft² | 34 tCO₂e |
| 2016 | 50 | +9 | 18.7 kBtu/ft² | 6 tCO₂e |
| 2015 | 41 | 19.8 kBtu/ft² | 6 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
- 2920 EASTLAKE AVE E
- City
- Seattle
- State
- Washington
- ZIP
- 98102
- Coordinates
- 47.64786, -122.32378
Within ~1 km
Nearby benchmarked buildings
- Terry & Maple Hall Uwscore —
Residence Hall/Dormitory · 325,000 sq ft
- Northlake Commonsscore —
Mixed Use Property · 294,150 sq ft
- Liza Eastlakescore 99
Multifamily Housing · 207,034 sq ft
- Eastlake 2851score 100
Multifamily Housing · 165,325 sq ft
Laboratory · 143,439 sq ft
- Tops K-8 (Sps-District)score 70
K-12 School · 95,501 sq ft
See also: most efficient in Seattle · biggest emitters
How does Tramonti At Lake Union Condominium compare with other multifamily housing buildings in Seattle?
The latest disclosures cover 1,971 multifamily housing buildings in Seattle, out of 3,871 buildings citywide. Tramonti At Lake Union Condominium's ENERGY STAR score of 71 compares with an average of 83 across the 1,652 that report a score; it scores higher than 19% of them and lower than 80%. Its site EUI of 35.1 kBtu/ft² is roughly in line with the average of 34.9 kBtu/ft². Its emissions intensity of 0.7 kgCO₂e/ft² is roughly in line with the group average of 0.7 kgCO₂e/ft².
At 62,504 sq ft, it is about 28% below the average floor area of 86,468 sq ft for those buildings. It was built in 2004, 21 years later than the group's average year built (1983). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Tramonti At Lake Union Condominium's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Tramonti At Lake Union Condominium, covering report years 2015–2025. Its ENERGY STAR score went from 41 in 2015 to 71 in 2025 (+30 points); its best year on file was 2019, at 93. Site EUI moved from 19.8 kBtu/ft² (2015) to 35.1 kBtu/ft² (2025), an 77% increase. Reported emissions went from 6 tCO₂e to 28 tCO₂e over the same span (up 350%).
What does an ENERGY STAR score of 71 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 71 means the building performs better than about 71% of its national peers. BuildingCensus bands the score into report-card grades; 71 falls in band B — above median (70–84). It sits 4 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. Tramonti At Lake Union Condominium's 35.1 kBtu/ft² across 62,504 sq ft works out to about 2.2 billion Btu (643 MWh-equivalent) in 2025. Its source EUI of 80.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 314,460 kWh of electricity and 4,276 therms of natural gas for the year.
Which law requires Tramonti At Lake Union Condominium to report its energy use?
Tramonti At Lake Union Condominium 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:23560:2025). 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 multifamily housing buildings in Seattle
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- Lexicon Apts· 62,049 sq ft · score 100 (A)
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- Multifamily Housing buildings in Seattle· 1,971 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 Tramonti At Lake Union Condominium's energy grade?
Tramonti At Lake Union Condominium scores 71 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Tramonti At Lake Union Condominium use?
Its 2025 site energy-use intensity was 35.1 kBtu/ft² (80.7 kBtu/ft² source) across 62,504 sq ft, including 314,460 kWh of electricity and 4,276 therms of natural gas.
What are Tramonti At Lake Union Condominium's carbon emissions?
Tramonti At Lake Union Condominium reported 28 tCO₂e of greenhouse-gas emissions (0.7 kgCO₂e/ft²) for 2025.
Where is Tramonti At Lake Union Condominium?
Tramonti At Lake Union Condominium is at 2920 EASTLAKE AVE E, in Seattle, Washington 98102. Its coordinates are 47.64786, -122.32378 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Tramonti At Lake Union Condominium and when was it built?
Tramonti At Lake Union Condominium has 62,504 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2004 as its year built. It is classed as multifamily housing.
Is Tramonti At Lake Union Condominium 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, “Tramonti At Lake Union Condominium, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/tramonti-at-lake-union-condominium-3660469e (data as of October 2, 2026).