Jet On Boylston Flats
Multifamily Housing in Seattle, WA · 1820 BOYLSTON AVE · 98122
At a glance
Jet On Boylston Flats is a 42,090-square-foot multifamily housing building at 1820 BOYLSTON AVE in Seattle, Washington, built in 2019. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 97 out of 100 (grade A), a site energy-use intensity of 41.9 kBtu/ft² and 48 tCO₂e of greenhouse-gas emissions. That score is higher than 70% 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 | 97 (band A) |
| Site EUI | 41.9 kBtu/ft² |
| Source EUI | 78.4 kBtu/ft² |
| GHG emissions | 48 tCO₂e |
| GHG intensity | 1.3 kgCO₂e/ft² |
| Electricity | 219,531 kWh |
| Natural gas | 8,480 therms |
| Gross floor area | 42,090 sq ft |
| Source record | seattle:50512:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 97 | -1 | 41.9 kBtu/ft² | 48 tCO₂e |
| 2024 | 98 | +1 | 40.1 kBtu/ft² | 47 tCO₂e |
| 2023 | 97 | ±0 | 41.5 kBtu/ft² | 48 tCO₂e |
| 2022 | 97 | ±0 | 43.3 kBtu/ft² | 51 tCO₂e |
| 2021 | 97 | -1 | 41.5 kBtu/ft² | 48 tCO₂e |
| 2020 | 98 | 36.9 kBtu/ft² | 40 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
- 1820 BOYLSTON AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98122
- Coordinates
- 47.61822, -122.32298
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Jet On Boylston Flats 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. Jet On Boylston Flats's ENERGY STAR score of 97 compares with an average of 83 across the 1,652 that report a score; it scores higher than 70% of them and lower than 25%. Its site EUI of 41.9 kBtu/ft² is about 20% above the average of 34.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 1.3 kgCO₂e/ft² is about 81% above the group average of 0.7 kgCO₂e/ft².
At 42,090 sq ft, it is about half of the average floor area of 86,468 sq ft for those buildings. It was built in 2019, 36 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 Jet On Boylston Flats's energy performance changed over time?
BuildingCensus holds 6 Seattle disclosures for Jet On Boylston Flats, covering report years 2020–2025. Its ENERGY STAR score went from 98 in 2020 to 97 in 2025 (-1 points); its best year on file was 2020, at 98. Site EUI moved from 36.9 kBtu/ft² (2020) to 41.9 kBtu/ft² (2025), an 14% increase. Reported emissions went from 40 tCO₂e to 48 tCO₂e over the same span (up 20%).
What does an ENERGY STAR score of 97 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 97 means the building performs better than about 97% of its national peers. BuildingCensus bands the score into report-card grades; 97 falls in band A — high performer (85–100). 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. Jet On Boylston Flats's 41.9 kBtu/ft² across 42,090 sq ft works out to about 1.8 billion Btu (517 MWh-equivalent) in 2025. Its source EUI of 78.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 219,531 kWh of electricity and 8,480 therms of natural gas for the year.
Which law requires Jet On Boylston Flats to report its energy use?
Jet On Boylston Flats 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:50512:2025). 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
- Olympic Park Condominium· 42,084 sq ft · score 87 (A)
- Second & Pine Apts· 42,078 sq ft · score 62 (C)
- Terrace View· 42,048 sq ft · score 85 (A)
- June On South Lake· 42,000 sq ft · score 93 (A)
- The Point Apartments· 41,921 sq ft · score 80 (B)
- Gilman Court Apartments· 41,919 sq ft · score 72 (B)
- 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 Jet On Boylston Flats's energy grade?
Jet On Boylston Flats scores 97 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Jet On Boylston Flats use?
Its 2025 site energy-use intensity was 41.9 kBtu/ft² (78.4 kBtu/ft² source) across 42,090 sq ft, including 219,531 kWh of electricity and 8,480 therms of natural gas.
What are Jet On Boylston Flats's carbon emissions?
Jet On Boylston Flats reported 48 tCO₂e of greenhouse-gas emissions (1.3 kgCO₂e/ft²) for 2025.
Where is Jet On Boylston Flats?
Jet On Boylston Flats is at 1820 BOYLSTON AVE, in Seattle, Washington 98122. Its coordinates are 47.61822, -122.32298 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Jet On Boylston Flats and when was it built?
Jet On Boylston Flats has 42,090 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2019 as its year built. It is classed as multifamily housing.
Is Jet On Boylston Flats 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, “Jet On Boylston Flats, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/jet-on-boylston-flats-726da6df (data as of October 2, 2026).