Illumina Lake Union
Multifamily Housing in Seattle, WA · 219 E GARFIELD ST · 98102
At a glance
Illumina Lake Union is a 106,524-square-foot multifamily housing building at 219 E GARFIELD ST in Seattle, Washington, built in 2005.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 839,075 kWh |
| Gross floor area | 106,524 sq ft |
| Source record | seattle:21579:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | — | — | |
| 2024 | 85 | -2 | 49.8 kBtu/ft² | 22 tCO₂e |
| 2023 | 87 | +3 | 49.6 kBtu/ft² | 22 tCO₂e |
| 2022 | 84 | -3 | 52.8 kBtu/ft² | 28 tCO₂e |
| 2021 | 87 | ±0 | 50.9 kBtu/ft² | 27 tCO₂e |
| 2020 | 87 | -3 | 48.1 kBtu/ft² | 20 tCO₂e |
| 2019 | 90 | -1 | 47.3 kBtu/ft² | 20 tCO₂e |
| 2018 | 91 | +9 | 46.3 kBtu/ft² | 19 tCO₂e |
| 2017 | 82 | +7 | 49.0 kBtu/ft² | 19 tCO₂e |
| 2016 | 75 | -12 | 49.1 kBtu/ft² | 19 tCO₂e |
| 2015 | 87 | 27.1 kBtu/ft² | 19 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
- 219 E GARFIELD ST
- City
- Seattle
- State
- Washington
- ZIP
- 98102
- Coordinates
- 47.63361, -122.32490
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Illumina Lake Union 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.
At 106,524 sq ft, it is about 23% above the average floor area of 86,468 sq ft for those buildings. It was built in 2005, 22 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 Illumina Lake Union's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Illumina Lake Union, covering report years 2015–2025. Its ENERGY STAR score went from 87 in 2015 to 85 in 2024 (-2 points); its best year on file was 2018, at 91. Site EUI moved from 27.1 kBtu/ft² (2015) to 49.8 kBtu/ft² (2024), an 84% increase. Reported emissions went from 19 tCO₂e to 22 tCO₂e over the same span (up 20%).
Which law requires Illumina Lake Union to report its energy use?
Illumina Lake Union 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:21579:2025). 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
- Stone Way Apartments· 106,218 sq ft · score 89 (A)
- Lowell-Emerson· 105,776 sq ft
- Bellora Condominium· 105,707 sq ft · score 69 (C)
- Uncle Bob's Place Condominium· 104,897 sq ft · score 100 (A)
- The Central Apartments· 104,598 sq ft · score 92 (A)
- Hawthorne Apartments· 104,452 sq ft · score 100 (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 Illumina Lake Union's energy grade?
Illumina Lake Union did not report an ENERGY STAR score in its 2025 disclosure.
How much energy does Illumina Lake Union use?
No energy-use intensity was reported for 2025.
What are Illumina Lake Union's carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is Illumina Lake Union?
Illumina Lake Union is at 219 E GARFIELD ST, in Seattle, Washington 98102. Its coordinates are 47.63361, -122.32490 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Illumina Lake Union and when was it built?
Illumina Lake Union has 106,524 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2005 as its year built. It is classed as multifamily housing.
Is Illumina Lake Union 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, “Illumina Lake Union, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/illumina-lake-union-c110310b (data as of October 2, 2026).