At a glance
Harbor Marina Bldgs E & F is a 60,657-square-foot office building at 1131 SW KLICKITAT WAY in Seattle, Washington, built in 1997. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 85 out of 100 (grade A), a site energy-use intensity of 49.0 kBtu/ft² and 20 tCO₂e of greenhouse-gas emissions. That score is higher than 54% 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 | 85 (band A) |
| Site EUI | 49.0 kBtu/ft² |
| Source EUI | 129.2 kBtu/ft² |
| GHG emissions | 20 tCO₂e |
| GHG intensity | 0.5 kgCO₂e/ft² |
| Electricity | 529,012 kWh |
| Natural gas | 1,882 therms |
| Gross floor area | 60,657 sq ft |
| Source record | seattle:23268:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 85 | +30 | 49.0 kBtu/ft² | 20 tCO₂e |
| 2024 | 55 | -13 | 77.5 kBtu/ft² | 21 tCO₂e |
| 2023 | 68 | -12 | 70.7 kBtu/ft² | 39 tCO₂e |
| 2022 | 80 | +27 | 52.4 kBtu/ft² | 19 tCO₂e |
| 2021 | 53 | -26 | 67.9 kBtu/ft² | 18 tCO₂e |
| 2020 | 79 | +17 | 46.3 kBtu/ft² | 13 tCO₂e |
| 2019 | 62 | +1 | 60.9 kBtu/ft² | 18 tCO₂e |
| 2018 | 61 | ±0 | 60.4 kBtu/ft² | 17 tCO₂e |
| 2017 | 61 | +4 | 68.9 kBtu/ft² | 21 tCO₂e |
| 2016 | 57 | +3 | 69.5 kBtu/ft² | 20 tCO₂e |
| 2015 | 54 | 71.8 kBtu/ft² | 21 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
- 1131 SW KLICKITAT WAY
- City
- Seattle
- State
- Washington
- ZIP
- 98134
- Coordinates
- 47.56999, -122.34703
Within ~1 km
Nearby benchmarked buildings
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Manufacturing/Industrial Plant · 326,751 sq ft
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Mixed Use Property · 113,780 sq ft
- Fergusonscore 45
Distribution Center · 72,719 sq ft
Mixed Use Property · 51,000 sq ft
See also: most efficient in Seattle · biggest emitters
How does Harbor Marina Bldgs E & F compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Harbor Marina Bldgs E & F's ENERGY STAR score of 85 compares with an average of 76 across the 378 that report a score; it scores higher than 54% of them and lower than 44%. Its site EUI of 49.0 kBtu/ft² is roughly in line with the average of 44.8 kBtu/ft². Its emissions intensity of 0.5 kgCO₂e/ft² is about 29% below the group average of 0.7 kgCO₂e/ft².
At 60,657 sq ft, it is about 69% below the average floor area of 196,452 sq ft for those buildings. It was built in 1997, 32 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 Harbor Marina Bldgs E & F's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Harbor Marina Bldgs E & F, covering report years 2015–2025. Its ENERGY STAR score went from 54 in 2015 to 85 in 2025 (+31 points). Site EUI moved from 71.8 kBtu/ft² (2015) to 49.0 kBtu/ft² (2025), a 32% decrease. Reported emissions went from 21 tCO₂e to 20 tCO₂e over the same span (down 3%).
What does an ENERGY STAR score of 85 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 85 means the building performs better than about 85% of its national peers. BuildingCensus bands the score into report-card grades; 85 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. Harbor Marina Bldgs E & F's 49.0 kBtu/ft² across 60,657 sq ft works out to about 3 billion Btu (871 MWh-equivalent) in 2025. Its source EUI of 129.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 529,012 kWh of electricity and 1,882 therms of natural gas for the year.
Which law requires Harbor Marina Bldgs E & F to report its energy use?
Harbor Marina Bldgs E & F 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:23268:2025). 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
- GREEN ROOM· 60,592 sq ft · score 89 (A)
- The End Of Elliott Complex· 59,800 sq ft · score 56 (C)
- GIBRALTAR TOWER· 59,400 sq ft · EUI 25.8 kBtu/ft²
- Fremont Crossing· 59,293 sq ft · EUI 13.2 kBtu/ft²
- Roebling Bldg· 58,970 sq ft · score 86 (A)
- TRIANON BUILDING· 57,620 sq ft
- 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 Harbor Marina Bldgs E & F's energy grade?
Harbor Marina Bldgs E & F scores 85 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 Harbor Marina Bldgs E & F use?
Its 2025 site energy-use intensity was 49.0 kBtu/ft² (129.2 kBtu/ft² source) across 60,657 sq ft, including 529,012 kWh of electricity and 1,882 therms of natural gas.
What are Harbor Marina Bldgs E & F's carbon emissions?
Harbor Marina Bldgs E & F reported 20 tCO₂e of greenhouse-gas emissions (0.5 kgCO₂e/ft²) for 2025.
Where is Harbor Marina Bldgs E & F?
Harbor Marina Bldgs E & F is at 1131 SW KLICKITAT WAY, in Seattle, Washington 98134. Its coordinates are 47.56999, -122.34703 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Harbor Marina Bldgs E & F and when was it built?
Harbor Marina Bldgs E & F has 60,657 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1997 as its year built. It is classed as office.
Is Harbor Marina Bldgs E & F 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, “Harbor Marina Bldgs E & F, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/harbor-marina-bldgs-e-f-7484e29b (data as of October 2, 2026).