Cirque Apts
Multifamily Housing in Seattle, WA · 621 HARVARD AVE E · 98102
At a glance
Cirque Apts is a 27,580-square-foot multifamily housing building at 621 HARVARD AVE E in Seattle, Washington, built in 1965. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 84 out of 100 (grade B) and a site energy-use intensity of 35.1 kBtu/ft². That score is higher than 36% 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 | 84 (band B) |
| Site EUI | 35.1 kBtu/ft² |
| Source EUI | 70.9 kBtu/ft² |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 157,511 kWh |
| Natural gas | 4,304 therms |
| Gross floor area | 27,580 sq ft |
| Source record | seattle:25170:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 84 | 35.1 kBtu/ft² | — | |
| 2024 | — | — | — | |
| 2023 | 81 | -5 | 34.2 kBtu/ft² | 25 tCO₂e |
| 2022 | 86 | -4 | 33.9 kBtu/ft² | 25 tCO₂e |
| 2021 | 90 | +4 | 31.9 kBtu/ft² | 24 tCO₂e |
| 2020 | 86 | +4 | 32.6 kBtu/ft² | 25 tCO₂e |
| 2019 | 82 | +2 | 34.2 kBtu/ft² | 26 tCO₂e |
| 2018 | 80 | -10 | 34.5 kBtu/ft² | 26 tCO₂e |
| 2017 | 90 | +6 | 32.5 kBtu/ft² | 26 tCO₂e |
| 2016 | 84 | -6 | 31.4 kBtu/ft² | 24 tCO₂e |
| 2015 | 90 | 30.0 kBtu/ft² | 24 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 621 HARVARD AVE E
- City
- Seattle
- State
- Washington
- ZIP
- 98102
- Coordinates
- 47.62480, -122.32232
Within ~1 km
Nearby benchmarked buildings
- Metropolitan Park Eastscore 84
Office · 497,513 sq ft
- 1150 Eastlakescore —
Mixed Use Property · 444,757 sq ft
- Joulescore 99
Multifamily Housing · 436,301 sq ft
Other/Specialty Hospital · 351,530 sq ft
- The Lyricscore —
Multifamily Housing · 345,949 sq ft
- 1100 Eastlake - (2013)score —
Mixed Use Property · 287,224 sq ft
See also: most efficient in Seattle · biggest emitters
How does Cirque Apts 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. Cirque Apts's ENERGY STAR score of 84 compares with an average of 83 across the 1,652 that report a score; it scores higher than 36% of them and lower than 62%. Its site EUI of 35.1 kBtu/ft² is roughly in line with the average of 34.9 kBtu/ft².
At 27,580 sq ft, it is about 68% below the average floor area of 86,468 sq ft for those buildings. It was built in 1965, 18 years earlier 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 Cirque Apts's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Cirque Apts, covering report years 2015–2025. Its ENERGY STAR score went from 90 in 2015 to 84 in 2025 (-6 points); its best year on file was 2015, at 90. Site EUI moved from 30.0 kBtu/ft² (2015) to 35.1 kBtu/ft² (2025), an 17% increase. Reported emissions went from 24 tCO₂e to 25 tCO₂e over the same span (up 4%).
What does an ENERGY STAR score of 84 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 84 means the building performs better than about 84% of its national peers. BuildingCensus bands the score into report-card grades; 84 falls in band B — above median (70–84). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. Cirque Apts's 35.1 kBtu/ft² across 27,580 sq ft works out to about 1 billion Btu (284 MWh-equivalent) in 2025. Its source EUI of 70.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 157,511 kWh of electricity and 4,304 therms of natural gas for the year.
Which law requires Cirque Apts to report its energy use?
Cirque 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:25170:2025). 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
- Nelson Manor-Low Income Senior· 27,553 sq ft · score 66 (C)
- Fremont Vista Condominium· 27,533 sq ft · score 67 (C)
- Brittany House Condominium· 27,504 sq ft · score 80 (B)
- Hillcrest Apts· 27,504 sq ft · score 100 (A)
- Far East Building Apts· 27,494 sq ft · EUI 22.9 kBtu/ft²
- Whitman Vista Condominium· 27,480 sq ft · score 95 (A)
- 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 Cirque Apts's energy grade?
Cirque Apts scores 84 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 Cirque Apts use?
Its 2025 site energy-use intensity was 35.1 kBtu/ft² (70.9 kBtu/ft² source) across 27,580 sq ft, including 157,511 kWh of electricity and 4,304 therms of natural gas.
What are Cirque Apts's carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is Cirque Apts?
Cirque Apts is at 621 HARVARD AVE E, in Seattle, Washington 98102. Its coordinates are 47.62480, -122.32232 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Cirque Apts and when was it built?
Cirque Apts has 27,580 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1965 as its year built. It is classed as multifamily housing.
Is Cirque 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).
Working with Seattle building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Cirque Apts, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/cirque-apts-78ba397b (data as of October 2, 2026).