At a glance
830 4th Ave South - Turner Construction is a 53,840-square-foot office building at 830 4TH AVE S in Seattle, Washington, built in 1913. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 70.5 kBtu/ft² and 61 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 70.5 kBtu/ft² |
| Source EUI | 156.7 kBtu/ft² |
| GHG emissions | 61 tCO₂e |
| GHG intensity | 1.5 kgCO₂e/ft² |
| Electricity | 570,879 kWh |
| Natural gas | 9,566 therms |
| Gross floor area | 53,840 sq ft |
| Source record | seattle:24458:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 70.5 kBtu/ft² | 61 tCO₂e | |
| 2024 | — | — | — | |
| 2023 | 15 | +6 | 80.9 kBtu/ft² | 52 tCO₂e |
| 2022 | 9 | -15 | 90.9 kBtu/ft² | 55 tCO₂e |
| 2021 | 24 | 78.4 kBtu/ft² | 54 tCO₂e | |
| 2020 | — | — | 11 tCO₂e | |
| 2019 | 69 | -5 | 65.6 kBtu/ft² | 50 tCO₂e |
| 2018 | 74 | +12 | 60.5 kBtu/ft² | 45 tCO₂e |
| 2017 | 62 | -9 | 68.0 kBtu/ft² | 52 tCO₂e |
| 2016 | 71 | +1 | 68.0 kBtu/ft² | 44 tCO₂e |
| 2015 | 70 | 66.1 kBtu/ft² | 41 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
- 830 4TH AVE S
- City
- Seattle
- State
- Washington
- ZIP
- 98134
- Coordinates
- 47.59501, -122.32852
Within ~1 km
Nearby benchmarked buildings
- Centurylink Field-Stadiumscore —
Stadium (Open) · 1,913,640 sq ft
- T-Mobile Park (Safeco Field)score —
Other - Entertainment/Public Assembly · 1,172,127 sq ft
Parking · 872,409 sq ft
- 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 830 4th Ave South - Turner Construction compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 70.5 kBtu/ft² is about 57% 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 1.5 kgCO₂e/ft² is about twice the group average of 0.7 kgCO₂e/ft².
At 53,840 sq ft, it is about 73% below the average floor area of 196,452 sq ft for those buildings. It was built in 1913, 52 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 830 4th Ave South - Turner Construction's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for 830 4th Ave South - Turner Construction, covering report years 2015–2025. Its ENERGY STAR score went from 70 in 2015 to 15 in 2023 (-55 points); its best year on file was 2018, at 74. Site EUI moved from 66.1 kBtu/ft² (2015) to 70.5 kBtu/ft² (2025), an 7% increase. Reported emissions went from 41 tCO₂e to 61 tCO₂e over the same span (up 48%).
What does a site EUI of 70.5 kBtu/ft² mean?
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. 830 4th Ave South - Turner Construction's 70.5 kBtu/ft² across 53,840 sq ft works out to about 3.8 billion Btu (1,112 MWh-equivalent) in 2025. Its source EUI of 156.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 570,879 kWh of electricity and 9,566 therms of natural gas for the year.
Which law requires 830 4th Ave South - Turner Construction to report its energy use?
830 4th Ave South - Turner Construction 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:24458:2025). 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
- Northgate Office Building· 53,730 sq ft · score 10 (D)
- Mckinstry 220 South Dawson· 53,620 sq ft · score 85 (A)
- Prologis Park Seattle 2· 53,550 sq ft · score 94 (A)
- Tableau· 53,108 sq ft · score 36 (D)
- Marshall Building/Dahlia Lounge· 52,800 sq ft · score 53 (D)
- Resource Center· 52,759 sq ft · score 84 (B)
- 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 830 4th Ave South - Turner Construction's energy grade?
830 4th Ave South - Turner Construction did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 70.5 kBtu/ft².
How much energy does 830 4th Ave South - Turner Construction use?
Its 2025 site energy-use intensity was 70.5 kBtu/ft² (156.7 kBtu/ft² source) across 53,840 sq ft, including 570,879 kWh of electricity and 9,566 therms of natural gas.
What are 830 4th Ave South - Turner Construction's carbon emissions?
830 4th Ave South - Turner Construction reported 61 tCO₂e of greenhouse-gas emissions (1.5 kgCO₂e/ft²) for 2025.
Where is 830 4th Ave South - Turner Construction?
830 4th Ave South - Turner Construction is at 830 4TH AVE S, in Seattle, Washington 98134. Its coordinates are 47.59501, -122.32852 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 830 4th Ave South - Turner Construction and when was it built?
830 4th Ave South - Turner Construction has 53,840 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1913 as its year built. It is classed as office.
Is 830 4th Ave South - Turner Construction 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, “830 4th Ave South - Turner Construction, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/830-4th-ave-south-turner-construction-aa40f351 (data as of October 2, 2026).