At a glance
Magnuson Bldg 2, Conservation Corps is a 178,196-square-foot office building at 7727 63RD AVE NE in Seattle, Washington, built in 1970. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 9.9 kBtu/ft² and 48 tCO₂e of greenhouse-gas emissions. That score is higher than 96% of the 378 scored office buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 9.9 kBtu/ft² |
| Source EUI | 16.5 kBtu/ft² |
| GHG emissions | 48 tCO₂e |
| GHG intensity | 0.3 kgCO₂e/ft² |
| Electricity | 147,174 kWh |
| Natural gas | 9,220 therms |
| Gross floor area | 178,196 sq ft |
| Source record | seattle:50257:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 100 | 9.9 kBtu/ft² | 48 tCO₂e | |
| 2024 | — | 8.7 kBtu/ft² | 59 tCO₂e | |
| 2023 | — | 7.4 kBtu/ft² | 49 tCO₂e | |
| 2022 | — | 8.1 kBtu/ft² | 56 tCO₂e | |
| 2021 | — | 8.7 kBtu/ft² | 60 tCO₂e | |
| 2020 | — | 8.9 kBtu/ft² | 58 tCO₂e | |
| 2019 | — | 8.2 kBtu/ft² | 49 tCO₂e | |
| 2018 | 100 | 8.3 kBtu/ft² | 54 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
- 7727 63RD AVE NE
- City
- Seattle
- State
- Washington
- ZIP
- 98115
- Coordinates
- 47.68534, -122.26235
Within ~1 km
Nearby benchmarked buildings
- Magnuson Park Campusscore —
Other - Recreation · 564,258 sq ft
Mixed Use Property · 384,772 sq ft
Multifamily Housing · 213,076 sq ft
- Seventy-O-One Condominiumscore 83
Multifamily Housing · 144,779 sq ft
- Fairway Estates Condominiumscore 73
Multifamily Housing · 143,539 sq ft
- Sandpiper The Condominiumscore 79
Multifamily Housing · 120,701 sq ft
See also: most efficient in Seattle · biggest emitters
How does Magnuson Bldg 2, Conservation Corps compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Magnuson Bldg 2, Conservation Corps's ENERGY STAR score of 100 compares with an average of 76 across the 378 that report a score; it scores higher than 96% of them. Its site EUI of 9.9 kBtu/ft² is about 78% below the average of 44.8 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.3 kgCO₂e/ft² is about half of the group average of 0.7 kgCO₂e/ft².
At 178,196 sq ft, it is roughly in line with the average floor area of 196,452 sq ft for those buildings. It was built in 1970, 5 years later than the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has Magnuson Bldg 2, Conservation Corps's energy performance changed over time?
BuildingCensus holds 8 Seattle disclosures for Magnuson Bldg 2, Conservation Corps, covering report years 2018–2025. Its ENERGY STAR score was 100 in both 2018 and 2025. Site EUI moved from 8.3 kBtu/ft² (2018) to 9.9 kBtu/ft² (2025), an 19% increase. Reported emissions went from 54 tCO₂e to 48 tCO₂e over the same span (down 10%).
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. Magnuson Bldg 2, Conservation Corps's 9.9 kBtu/ft² across 178,196 sq ft works out to about 1.8 billion Btu (517 MWh-equivalent) in 2025. Its source EUI of 16.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 147,174 kWh of electricity and 9,220 therms of natural gas for the year.
Which law requires Magnuson Bldg 2, Conservation Corps to report its energy use?
Magnuson Bldg 2, Conservation Corps 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:50257:2025). 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 office buildings in Seattle
- Republican Building· 176,532 sq ft
- Mercer/Yale Bldg - 1260 Mercer· 175,885 sq ft · score 98 (A)
- Second And Spring Building· 172,842 sq ft · EUI 50.3 kBtu/ft²
- 35 Stone Office Building· 171,945 sq ft · score 88 (A)
- Active Voice Building (Formerly Sixth & Lenora)· 169,020 sq ft · score 87 (A)
- National Building· 167,860 sq ft · EUI 22.5 kBtu/ft²
- Office buildings in Seattle· 497 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 Magnuson Bldg 2, Conservation Corps's energy grade?
Magnuson Bldg 2, Conservation Corps scores 100 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 Magnuson Bldg 2, Conservation Corps use?
Its 2025 site energy-use intensity was 9.9 kBtu/ft² (16.5 kBtu/ft² source) across 178,196 sq ft, including 147,174 kWh of electricity and 9,220 therms of natural gas.
What are Magnuson Bldg 2, Conservation Corps's carbon emissions?
Magnuson Bldg 2, Conservation Corps reported 48 tCO₂e of greenhouse-gas emissions (0.3 kgCO₂e/ft²) for 2025.
Where is Magnuson Bldg 2, Conservation Corps?
Magnuson Bldg 2, Conservation Corps is at 7727 63RD AVE NE, in Seattle, Washington 98115. Its coordinates are 47.68534, -122.26235 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Magnuson Bldg 2, Conservation Corps and when was it built?
Magnuson Bldg 2, Conservation Corps has 178,196 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1970 as its year built. It is classed as office.
Is Magnuson Bldg 2, Conservation Corps 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, “Magnuson Bldg 2, Conservation Corps, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/magnuson-bldg-2-conservation-corps-5d8e5770 (data as of October 2, 2026).