Lambda Chi Alpha Fraternity
Multifamily Housing in Seattle, WA · 4509 19TH AVE NE · 98105
At a glance
Lambda Chi Alpha Fraternity is a 20,629-square-foot multifamily housing building at 4509 19TH AVE NE in Seattle, Washington, built in 1928.
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 | 63,922 kWh |
| Gross floor area | 20,629 sq ft |
| Source record | seattle:26919:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | — | — | |
| 2024 | — | — | 2 tCO₂e | |
| 2023 | — | — | 2 tCO₂e | |
| 2022 | — | — | 2 tCO₂e | |
| 2021 | 2 | -76 | 127.4 kBtu/ft² | 125 tCO₂e |
| 2020 | 78 | +38 | 48.5 kBtu/ft² | 39 tCO₂e |
| 2019 | 40 | -3 | 66.6 kBtu/ft² | 56 tCO₂e |
| 2018 | 43 | -8 | 64.3 kBtu/ft² | 54 tCO₂e |
| 2017 | 51 | -1 | 63.0 kBtu/ft² | 51 tCO₂e |
| 2016 | 52 | +9 | 58.6 kBtu/ft² | 48 tCO₂e |
| 2015 | 43 | 59.3 kBtu/ft² | 46 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
- 4509 19TH AVE NE
- City
- Seattle
- State
- Washington
- ZIP
- 98105
- Coordinates
- 47.66164, -122.30762
Within ~1 km
Nearby benchmarked buildings
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- Uw Tower Bldg Complexscore —
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- Arista Residencesscore 99
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- Chapter Building 1score 100
Office · 328,919 sq ft
See also: most efficient in Seattle · biggest emitters
How does Lambda Chi Alpha Fraternity 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 20,629 sq ft, it is about 76% below the average floor area of 86,468 sq ft for those buildings. It was built in 1928, 55 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 Lambda Chi Alpha Fraternity's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Lambda Chi Alpha Fraternity, covering report years 2015–2025. Its ENERGY STAR score went from 43 in 2015 to 2 in 2021 (-41 points); its best year on file was 2020, at 78. Site EUI moved from 59.3 kBtu/ft² (2015) to 127.4 kBtu/ft² (2021), an 115% increase. Reported emissions went from 46 tCO₂e to 2 tCO₂e over the same span (down 96%).
Which law requires Lambda Chi Alpha Fraternity to report its energy use?
Lambda Chi Alpha Fraternity 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:26919:2025). 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
- Costas/Apts/U Seafood· 20,600 sq ft · EUI 66.1 kBtu/ft²
- Galleon Apartments· 20,598 sq ft · score 95 (A)
- Merrill Place Residential Condominium· 20,583 sq ft · EUI 17.9 kBtu/ft²
- Chester Apts & Stores· 20,509 sq ft · EUI 29.3 kBtu/ft²
- Mercer Place Condominium· 20,506 sq ft · EUI 23.3 kBtu/ft²
- Apartments, 1340 12TH AVE S· 20,467 sq ft · score 96 (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 Lambda Chi Alpha Fraternity's energy grade?
Lambda Chi Alpha Fraternity did not report an ENERGY STAR score in its 2025 disclosure.
How much energy does Lambda Chi Alpha Fraternity use?
No energy-use intensity was reported for 2025.
What are Lambda Chi Alpha Fraternity's carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is Lambda Chi Alpha Fraternity?
Lambda Chi Alpha Fraternity is at 4509 19TH AVE NE, in Seattle, Washington 98105. Its coordinates are 47.66164, -122.30762 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Lambda Chi Alpha Fraternity and when was it built?
Lambda Chi Alpha Fraternity has 20,629 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1928 as its year built. It is classed as multifamily housing.
Is Lambda Chi Alpha Fraternity 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, “Lambda Chi Alpha Fraternity, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/lambda-chi-alpha-fraternity-897b3a6e (data as of October 2, 2026).