At a glance
Inscape Arts Building is a 76,624-square-foot office building at 815 AIRPORT WAY S in Seattle, Washington, built in 1930. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 81 out of 100 (grade B), a site energy-use intensity of 34.2 kBtu/ft² and 29 tCO₂e of greenhouse-gas emissions. That score is higher than 44% 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 | 81 (band B) |
| Site EUI | 34.2 kBtu/ft² |
| Source EUI | 89.7 kBtu/ft² |
| GHG emissions | 29 tCO₂e |
| GHG intensity | 0.4 kgCO₂e/ft² |
| Electricity | 736,484 kWh |
| Natural gas | 2,836 therms |
| Gross floor area | 76,624 sq ft |
| Source record | seattle:649:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 81 | +16 | 34.2 kBtu/ft² | 29 tCO₂e |
| 2024 | 65 | -2 | 43.9 kBtu/ft² | 33 tCO₂e |
| 2023 | 67 | +10 | 43.2 kBtu/ft² | 32 tCO₂e |
| 2022 | 57 | -9 | 49.8 kBtu/ft² | 36 tCO₂e |
| 2021 | 66 | -6 | 44.2 kBtu/ft² | 34 tCO₂e |
| 2020 | 72 | +2 | 39.7 kBtu/ft² | 32 tCO₂e |
| 2019 | 70 | +1 | 41.0 kBtu/ft² | 33 tCO₂e |
| 2018 | 69 | +13 | 41.6 kBtu/ft² | 32 tCO₂e |
| 2017 | 56 | -35 | 45.3 kBtu/ft² | 32 tCO₂e |
| 2016 | 91 | ±0 | 36.2 kBtu/ft² | 31 tCO₂e |
| 2015 | 91 | 34.7 kBtu/ft² | 26 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
- 815 AIRPORT WAY S
- City
- Seattle
- State
- Washington
- ZIP
- 98134
- Coordinates
- 47.59503, -122.32704
Within ~1 km
Nearby benchmarked buildings
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- Embassy Suites- Downtown Seattlescore 91
Mixed Use Property · 680,770 sq ft
Multifamily Housing · 619,416 sq ft
- King County Courthousescore 56
Courthouse · 540,360 sq ft
See also: most efficient in Seattle · biggest emitters
How does Inscape Arts Building compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Inscape Arts Building's ENERGY STAR score of 81 compares with an average of 76 across the 378 that report a score; it scores higher than 44% of them and lower than 53%. Its site EUI of 34.2 kBtu/ft² is about 24% 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 0.4 kgCO₂e/ft² is about half of the group average of 0.7 kgCO₂e/ft².
At 76,624 sq ft, it is about 61% below the average floor area of 196,452 sq ft for those buildings. It was built in 1930, 35 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 Inscape Arts Building's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Inscape Arts Building, covering report years 2015–2025. Its ENERGY STAR score went from 91 in 2015 to 81 in 2025 (-10 points); its best year on file was 2015, at 91. Site EUI moved from 34.7 kBtu/ft² (2015) to 34.2 kBtu/ft² (2025), a 1% decrease. Reported emissions went from 26 tCO₂e to 29 tCO₂e over the same span (up 13%).
What does an ENERGY STAR score of 81 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 81 means the building performs better than about 81% of its national peers. BuildingCensus bands the score into report-card grades; 81 falls in band B — above median (70–84). 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. Inscape Arts Building's 34.2 kBtu/ft² across 76,624 sq ft works out to about 2.6 billion Btu (768 MWh-equivalent) in 2025. Its source EUI of 89.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 736,484 kWh of electricity and 2,836 therms of natural gas for the year.
Which law requires Inscape Arts Building to report its energy use?
Inscape Arts Building 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:649:2025). 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
- Eastlake Center (South)· 76,245 sq ft · score 68 (C)
- Scripps Building - 221 First Avenue West· 76,213 sq ft · score 69 (C)
- Leschi Lake Center· 75,868 sq ft · EUI 47.8 kBtu/ft²
- Palmer Bldg· 75,600 sq ft · score 85 (A)
- Interurban Building (Old Smith Tower Annex Building)· 75,496 sq ft · score 86 (A)
- Provident Building· 75,288 sq ft · score 87 (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 Inscape Arts Building's energy grade?
Inscape Arts Building scores 81 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 Inscape Arts Building use?
Its 2025 site energy-use intensity was 34.2 kBtu/ft² (89.7 kBtu/ft² source) across 76,624 sq ft, including 736,484 kWh of electricity and 2,836 therms of natural gas.
What are Inscape Arts Building's carbon emissions?
Inscape Arts Building reported 29 tCO₂e of greenhouse-gas emissions (0.4 kgCO₂e/ft²) for 2025.
Where is Inscape Arts Building?
Inscape Arts Building is at 815 AIRPORT WAY S, in Seattle, Washington 98134. Its coordinates are 47.59503, -122.32704 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Inscape Arts Building and when was it built?
Inscape Arts Building has 76,624 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1930 as its year built. It is classed as office.
Is Inscape Arts Building 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, “Inscape Arts Building, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/inscape-arts-building-22b29052 (data as of October 2, 2026).