At a glance
Virginia Mason- Blackford Hall is a 22,667-square-foot office building at 1204 TERRY AVE in Seattle, Washington, built in 1946. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 1 out of 100 (grade D), a site energy-use intensity of 147.0 kBtu/ft² and 149 tCO₂e of greenhouse-gas emissions. That score is higher than 0% 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 | 1 (band D) |
| Site EUI | 147.0 kBtu/ft² |
| Source EUI | 288.0 kBtu/ft² |
| GHG emissions | 149 tCO₂e |
| GHG intensity | 6.1 kgCO₂e/ft² |
| Electricity | 507,440 kWh |
| Natural gas | 3,590 therms |
| Gross floor area | 22,667 sq ft |
| Source record | seattle:21117:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 1 | ±0 | 147.0 kBtu/ft² | 149 tCO₂e |
| 2024 | 1 | ±0 | 161.5 kBtu/ft² | 167 tCO₂e |
| 2023 | 1 | ±0 | 173.9 kBtu/ft² | 190 tCO₂e |
| 2022 | 1 | ±0 | 161.1 kBtu/ft² | 176 tCO₂e |
| 2021 | 1 | ±0 | 174.5 kBtu/ft² | 195 tCO₂e |
| 2020 | 1 | ±0 | 165.0 kBtu/ft² | 186 tCO₂e |
| 2019 | 1 | ±0 | 174.8 kBtu/ft² | 203 tCO₂e |
| 2018 | 1 | ±0 | 187.9 kBtu/ft² | 200 tCO₂e |
| 2017 | 1 | ±0 | 191.8 kBtu/ft² | 211 tCO₂e |
| 2016 | 1 | ±0 | 166.2 kBtu/ft² | 153 tCO₂e |
| 2015 | 1 | 157.8 kBtu/ft² | 131 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
- 1204 TERRY AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98101
- Coordinates
- 47.61063, -122.32741
Within ~1 km
Nearby benchmarked buildings
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- Seattle Convention Centerscore —
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- Us Bank Centerscore 87
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See also: most efficient in Seattle · biggest emitters
How does Virginia Mason- Blackford Hall compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Virginia Mason- Blackford Hall's ENERGY STAR score of 1 compares with an average of 76 across the 378 that report a score; it scores higher than 0% of them and lower than 99%. Its site EUI of 147.0 kBtu/ft² is about 228% above the average of 44.8 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 6.1 kgCO₂e/ft² is about 777% above the group average of 0.7 kgCO₂e/ft².
At 22,667 sq ft, it is about 88% below the average floor area of 196,452 sq ft for those buildings. It was built in 1946, 19 years earlier 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 Virginia Mason- Blackford Hall's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Virginia Mason- Blackford Hall, covering report years 2015–2025. Its ENERGY STAR score was 1 in both 2015 and 2025. Site EUI moved from 157.8 kBtu/ft² (2015) to 147.0 kBtu/ft² (2025), a 7% decrease. Reported emissions went from 131 tCO₂e to 149 tCO₂e over the same span (up 14%).
What does an ENERGY STAR score of 1 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: 1 is the bottom of the scale. BuildingCensus bands the score into report-card grades; 1 falls in band D — lowest band (1–54). It sits 74 points below 75, the threshold for ENERGY STAR certification. 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. Virginia Mason- Blackford Hall's 147.0 kBtu/ft² across 22,667 sq ft works out to about 3.3 billion Btu (977 MWh-equivalent) in 2025. Its source EUI of 288.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 507,440 kWh of electricity and 3,590 therms of natural gas for the year.
Which law requires Virginia Mason- Blackford Hall to report its energy use?
Virginia Mason- Blackford Hall 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:21117:2025). 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
- Fremont Foundry· 22,388 sq ft · EUI 23.0 kBtu/ft²
- Salmon Bay Fisheries Bldg· 22,365 sq ft · score 77 (B)
- Services For The Blind-Alaska St· 22,364 sq ft · score 71 (B)
- Sand Point Building 29· 21,931 sq ft · score 28 (D)
- SIXTH & KING ASSOCIATES· 21,600 sq ft
- 4000 Aurora Building· 21,436 sq ft · score 97 (A)
- 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 Virginia Mason- Blackford Hall's energy grade?
Virginia Mason- Blackford Hall scores 1 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Virginia Mason- Blackford Hall use?
Its 2025 site energy-use intensity was 147.0 kBtu/ft² (288.0 kBtu/ft² source) across 22,667 sq ft, including 507,440 kWh of electricity and 3,590 therms of natural gas.
What are Virginia Mason- Blackford Hall's carbon emissions?
Virginia Mason- Blackford Hall reported 149 tCO₂e of greenhouse-gas emissions (6.1 kgCO₂e/ft²) for 2025.
Where is Virginia Mason- Blackford Hall?
Virginia Mason- Blackford Hall is at 1204 TERRY AVE, in Seattle, Washington 98101. Its coordinates are 47.61063, -122.32741 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Virginia Mason- Blackford Hall and when was it built?
Virginia Mason- Blackford Hall has 22,667 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1946 as its year built. It is classed as office.
Is Virginia Mason- Blackford Hall 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, “Virginia Mason- Blackford Hall, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/virginia-mason-blackford-hall-1592bf57 (data as of October 2, 2026).