THUNDERBIRD APTS - EXEMPT
Multifamily LR (1-4) in Seattle, WA · 4821 FAUNTLEROY WAY SW · 98116
At a glance
THUNDERBIRD APTS - EXEMPT is a 21,596-square-foot multifamily LR (1-4) building at 4821 FAUNTLEROY WAY SW in Seattle, Washington, built in 1957. In its 2024 Seattle benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 12.5 kBtu/ft² and 2 tCO₂e of greenhouse-gas emissions. That score is higher than 80% of the 25 scored multifamily LR (1-4) buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 12.5 kBtu/ft² |
| Source EUI | 35.1 kBtu/ft² |
| GHG emissions | 2 tCO₂e |
| GHG intensity | 0.1 kgCO₂e/ft² |
| Electricity | 79,339 kWh |
| Gross floor area | 21,596 sq ft |
| Source record | seattle:27114:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 12.5 kBtu/ft² | 2 tCO₂e |
| 2023 | 100 | ±0 | 13.4 kBtu/ft² | 2 tCO₂e |
| 2022 | 100 | 12.4 kBtu/ft² | 2 tCO₂e | |
| 2021 | — | — | — | |
| 2020 | 76 | -7 | 28.3 kBtu/ft² | 4 tCO₂e |
| 2019 | 83 | ±0 | 26.4 kBtu/ft² | 3 tCO₂e |
| 2018 | 83 | -1 | 26.3 kBtu/ft² | 3 tCO₂e |
| 2017 | 84 | +7 | 26.4 kBtu/ft² | 3 tCO₂e |
| 2016 | 77 | -4 | 26.0 kBtu/ft² | 3 tCO₂e |
| 2015 | 81 | 25.3 kBtu/ft² | 3 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
- 4821 FAUNTLEROY WAY SW
- City
- Seattle
- State
- Washington
- ZIP
- 98116
- Coordinates
- 47.55857, -122.38186
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does THUNDERBIRD APTS - EXEMPT compare with other multifamily LR (1-4) buildings in Seattle?
The latest disclosures cover 53 multifamily LR (1-4) buildings in Seattle, out of 3,871 buildings citywide. THUNDERBIRD APTS - EXEMPT's ENERGY STAR score of 100 compares with an average of 73 across the 25 that report a score; it scores higher than 80% of them. Its site EUI of 12.5 kBtu/ft² is about 69% below the average of 40.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.1 kgCO₂e/ft² is about 92% below the group average of 0.9 kgCO₂e/ft².
At 21,596 sq ft, it is about half of the average floor area of 45,933 sq ft for those buildings. It was built in 1957, 19 years earlier than the group's average year built (1976).
How has THUNDERBIRD APTS - EXEMPT's energy performance changed over time?
BuildingCensus holds 10 Seattle disclosures for THUNDERBIRD APTS - EXEMPT, covering report years 2015–2024. Its ENERGY STAR score went from 81 in 2015 to 100 in 2024 (+19 points); its best year on file was 2022, at 100. Site EUI moved from 25.3 kBtu/ft² (2015) to 12.5 kBtu/ft² (2024), a 51% decrease. Reported emissions went from 3 tCO₂e to 2 tCO₂e over the same span (down 50%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. THUNDERBIRD APTS - EXEMPT's 12.5 kBtu/ft² across 21,596 sq ft works out to about 0.3 billion Btu (79 MWh-equivalent) in 2024. Its source EUI of 35.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 79,339 kWh of electricity for the year.
Which law requires THUNDERBIRD APTS - EXEMPT to report its energy use?
THUNDERBIRD APTS - EXEMPT 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 2024 disclosure (source record seattle:27114:2024). 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 LR (1-4) buildings in Seattle
- 750 ON THE HILL CONDOMINIUM· 21,583 sq ft
- HALCON CONDOMINIUM· 21,552 sq ft
- Lake City Commons· 21,388 sq ft · EUI 32.7 kBtu/ft²
- CAL ANDERSON HOUSE· 21,005 sq ft · score 36 (D)
- SAN JUAN APTS- DEMOLISHED MAY 2016· 20,998 sq ft · score 98 (A)
- VIKING APT· 20,688 sq ft
- Multifamily LR (1-4) buildings in Seattle· 53 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 THUNDERBIRD APTS - EXEMPT's energy grade?
THUNDERBIRD APTS - EXEMPT scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does THUNDERBIRD APTS - EXEMPT use?
Its 2024 site energy-use intensity was 12.5 kBtu/ft² (35.1 kBtu/ft² source) across 21,596 sq ft, including 79,339 kWh of electricity.
What are THUNDERBIRD APTS - EXEMPT's carbon emissions?
THUNDERBIRD APTS - EXEMPT reported 2 tCO₂e of greenhouse-gas emissions (0.1 kgCO₂e/ft²) for 2024.
Where is THUNDERBIRD APTS - EXEMPT?
THUNDERBIRD APTS - EXEMPT is at 4821 FAUNTLEROY WAY SW, in Seattle, Washington 98116. Its coordinates are 47.55857, -122.38186 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is THUNDERBIRD APTS - EXEMPT and when was it built?
THUNDERBIRD APTS - EXEMPT has 21,596 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1957 as its year built. It is classed as multifamily LR (1-4).
Is THUNDERBIRD APTS - EXEMPT covered by the Seattle Energy Benchmarking Ordinance (SMC 22.920)?
Yes — it appears in the 2024 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, “THUNDERBIRD APTS - EXEMPT, Seattle, Washington — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/thunderbird-apts-exempt-928c7e8f (data as of October 2, 2026).