At a glance
Navos Office is a 36,879-square-foot office building at 2600 SW HOLDEN ST in Seattle, Washington, built in 1970. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 92 out of 100 (grade A), a site energy-use intensity of 22.3 kBtu/ft² and 2 tCO₂e of greenhouse-gas emissions. That score is higher than 76% 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 | 92 (band A) |
| Site EUI | 22.3 kBtu/ft² |
| Source EUI | 62.5 kBtu/ft² |
| GHG emissions | 2 tCO₂e |
| GHG intensity | 0.1 kgCO₂e/ft² |
| Electricity | 110,184 kWh |
| Gross floor area | 36,879 sq ft |
| Source record | seattle:24601:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 92 | +2 | 22.3 kBtu/ft² | 2 tCO₂e |
| 2024 | 90 | +3 | 23.4 kBtu/ft² | 2 tCO₂e |
| 2023 | 87 | +8 | 25.8 kBtu/ft² | 3 tCO₂e |
| 2022 | 79 | ±0 | 31.8 kBtu/ft² | 3 tCO₂e |
| 2021 | 79 | +36 | 31.8 kBtu/ft² | 3 tCO₂e |
| 2020 | 43 | +15 | 53.1 kBtu/ft² | 5 tCO₂e |
| 2019 | 28 | +10 | 64.9 kBtu/ft² | 6 tCO₂e |
| 2018 | 18 | -6 | 76.1 kBtu/ft² | 7 tCO₂e |
| 2017 | 24 | -2 | 72.7 kBtu/ft² | 7 tCO₂e |
| 2016 | 26 | -9 | 67.9 kBtu/ft² | 7 tCO₂e |
| 2015 | 35 | 60.0 kBtu/ft² | 6 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
- 2600 SW HOLDEN ST
- City
- Seattle
- State
- Washington
- ZIP
- 98126
- Coordinates
- 47.53419, -122.36624
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Navos Office compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Navos Office's ENERGY STAR score of 92 compares with an average of 76 across the 378 that report a score; it scores higher than 76% of them and lower than 21%. Its site EUI of 22.3 kBtu/ft² is about half of 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 0.1 kgCO₂e/ft² is about 81% below the group average of 0.7 kgCO₂e/ft².
At 36,879 sq ft, it is about 81% below 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 Navos Office's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Navos Office, covering report years 2015–2025. Its ENERGY STAR score went from 35 in 2015 to 92 in 2025 (+57 points). Site EUI moved from 60.0 kBtu/ft² (2015) to 22.3 kBtu/ft² (2025), a 63% decrease. Reported emissions went from 6 tCO₂e to 2 tCO₂e over the same span (down 64%).
What does an ENERGY STAR score of 92 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 92 means the building performs better than about 92% of its national peers. BuildingCensus bands the score into report-card grades; 92 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. Navos Office's 22.3 kBtu/ft² across 36,879 sq ft works out to about 0.8 billion Btu (241 MWh-equivalent) in 2025. Its source EUI of 62.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 110,184 kWh of electricity for the year.
Which law requires Navos Office to report its energy use?
Navos Office 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:24601:2025). 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
- Greybar Building· 36,630 sq ft · score 79 (B)
- Alaska Trade Building· 36,160 sq ft · EUI 46.8 kBtu/ft²
- 95 S Jackson· 36,075 sq ft · EUI 16.7 kBtu/ft²
- 1555 4th Ave S· 36,000 sq ft · score 61 (C)
- 10th Ave Bldg· 36,000 sq ft · score 78 (B)
- Heartwood/Fobes 562· 36,000 sq ft · score 93 (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 Navos Office's energy grade?
Navos Office scores 92 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 Navos Office use?
Its 2025 site energy-use intensity was 22.3 kBtu/ft² (62.5 kBtu/ft² source) across 36,879 sq ft, including 110,184 kWh of electricity.
What are Navos Office's carbon emissions?
Navos Office reported 2 tCO₂e of greenhouse-gas emissions (0.1 kgCO₂e/ft²) for 2025.
Where is Navos Office?
Navos Office is at 2600 SW HOLDEN ST, in Seattle, Washington 98126. Its coordinates are 47.53419, -122.36624 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Navos Office and when was it built?
Navos Office has 36,879 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 Navos Office 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, “Navos Office, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/navos-office-569b918a (data as of October 2, 2026).