1101 Madison Tower
Medical Office in Seattle, WA · 1101 MADISON ST · 98104
At a glance
1101 Madison Tower is a 690,158-square-foot medical office at 1101 MADISON ST in Seattle, Washington, built in 1992. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 70 out of 100 (grade B), a site energy-use intensity of 93.7 kBtu/ft² and 147 tCO₂e of greenhouse-gas emissions. That score is higher than 59% of the 32 scored medical office buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 70 (band B) |
| Site EUI | 93.7 kBtu/ft² |
| Source EUI | 262.4 kBtu/ft² |
| GHG emissions | 147 tCO₂e |
| GHG intensity | 0.5 kgCO₂e/ft² |
| Electricity | 7,427,519 kWh |
| Gross floor area | 690,158 sq ft |
| Source record | seattle:438:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 70 | 93.7 kBtu/ft² | 147 tCO₂e | |
| 2024 | — | 92.1 kBtu/ft² | 144 tCO₂e | |
| 2023 | 59 | -4 | 107.2 kBtu/ft² | 168 tCO₂e |
| 2022 | 63 | ±0 | 104.6 kBtu/ft² | 164 tCO₂e |
| 2021 | 63 | +59 | 104.0 kBtu/ft² | 163 tCO₂e |
| 2020 | 4 | -35 | 173.5 kBtu/ft² | 141 tCO₂e |
| 2019 | 39 | ±0 | 101.4 kBtu/ft² | 159 tCO₂e |
| 2018 | 39 | -6 | 100.9 kBtu/ft² | 158 tCO₂e |
| 2017 | 45 | -13 | 97.6 kBtu/ft² | 153 tCO₂e |
| 2016 | 58 | -10 | 78.2 kBtu/ft² | 123 tCO₂e |
| 2015 | 68 | 69.7 kBtu/ft² | 109 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
- 1101 MADISON ST
- City
- Seattle
- State
- Washington
- ZIP
- 98104
- Coordinates
- 47.60921, -122.32425
Within ~1 km
Nearby benchmarked buildings
College/University · 2,099,379 sq ft
Parking · 2,080,885 sq ft
- Columbia Centerscore 90
Office · 1,952,220 sq ft
Hospital (General Medical & Surgical) · 1,926,841 sq ft
- Seattle Convention Centerscore —
Convention Center · 1,842,925 sq ft
- Two Union Squarescore 96
Office · 1,605,578 sq ft
See also: most efficient in Seattle · biggest emitters
How does 1101 Madison Tower compare with other medical office buildings in Seattle?
The latest disclosures cover 45 medical office buildings in Seattle, out of 3,871 buildings citywide. 1101 Madison Tower's ENERGY STAR score of 70 compares with an average of 60 across the 32 that report a score; it scores higher than 59% of them and lower than 38%. Its site EUI of 93.7 kBtu/ft² is roughly in line with the average of 88.3 kBtu/ft². Its emissions intensity of 0.5 kgCO₂e/ft² is about 64% below the group average of 1.5 kgCO₂e/ft².
At 690,158 sq ft, it is about 374% above the average floor area of 145,612 sq ft for those buildings. It was built in 1992, 13 years later than the group's average year built (1979). Across all 24 jurisdictions BuildingCensus covers, the 1,266 medical office buildings average an ENERGY STAR score of 64 and a site EUI of 92.2 kBtu/ft².
How has 1101 Madison Tower's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for 1101 Madison Tower, covering report years 2015–2025. Its ENERGY STAR score went from 68 in 2015 to 70 in 2025 (+2 points). Site EUI moved from 69.7 kBtu/ft² (2015) to 93.7 kBtu/ft² (2025), an 34% increase. Reported emissions went from 109 tCO₂e to 147 tCO₂e over the same span (up 34%).
What does an ENERGY STAR score of 70 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: a score of 70 means the building performs better than about 70% of its national peers. BuildingCensus bands the score into report-card grades; 70 falls in band B — above median (70–84). It sits 5 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. 1101 Madison Tower's 93.7 kBtu/ft² across 690,158 sq ft works out to about 64.7 billion Btu (18,952 MWh-equivalent) in 2025. Its source EUI of 262.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 7,427,519 kWh of electricity for the year.
Which law requires 1101 Madison Tower to report its energy use?
1101 Madison Tower 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:438:2025). 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 medical office buildings in Seattle
- Nordstrom Elmer J Medical Tower Condominium· 422,503 sq ft · score 92 (A)
- MEDICAL DENTAL BUILDING· 363,934 sq ft
- James Tower (Providence Medical Center)· 320,946 sq ft · EUI 68.7 kBtu/ft²
- Cabrini Medical Tower· 319,911 sq ft · score 31 (D)
- 600 BROADWAY· 289,419 sq ft · score 92 (A)
- HARBORVIEW MEDICAL CENTER - Pat Steel Building· 275,130 sq ft
- Medical Office buildings in Seattle· 45 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 1101 Madison Tower's energy grade?
1101 Madison Tower scores 70 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1101 Madison Tower use?
Its 2025 site energy-use intensity was 93.7 kBtu/ft² (262.4 kBtu/ft² source) across 690,158 sq ft, including 7,427,519 kWh of electricity.
What are 1101 Madison Tower's carbon emissions?
1101 Madison Tower reported 147 tCO₂e of greenhouse-gas emissions (0.5 kgCO₂e/ft²) for 2025.
Where is 1101 Madison Tower?
1101 Madison Tower is at 1101 MADISON ST, in Seattle, Washington 98104. Its coordinates are 47.60921, -122.32425 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1101 Madison Tower and when was it built?
1101 Madison Tower has 690,158 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1992 as its year built. It is classed as medical office.
Is 1101 Madison Tower 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, “1101 Madison Tower, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/1101-madison-tower-ca3677ba (data as of October 2, 2026).