BuildingCensus
B

F5 Tower

Office in Seattle, WA · 801 5TH AVE · 98104

ENERGY STAR score
82
band B · 2025
Site EUI
48.4
kBtu/ft²
GHG emissions
552
tCO₂e
GHG intensity
0.7
kgCO₂e/ft²
Floor area
905,655
sq ft
Year built
2018
vintage
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85–10070–8455–691–54
This entry + 6 nearby

Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025

Benchmarking record

FieldValue
ENERGY STAR score82 (band B)
Site EUI48.4 kBtu/ft²
Source EUI121.6 kBtu/ft²
GHG emissions552 tCO₂e
GHG intensity0.7 kgCO₂e/ft²
Electricity10,026,220 kWh
Natural gas66,861 therms
Gross floor area905,655 sq ft
Source recordseattle:50518:2025

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2025latest82-748.4 kBtu/ft²552 tCO₂e
202489+2142.0 kBtu/ft²507 tCO₂e
202368-660.0 kBtu/ft²600 tCO₂e
202274+354.5 kBtu/ft²509 tCO₂e
202171-451.2 kBtu/ft²453 tCO₂e
202075-1147.8 kBtu/ft²346 tCO₂e
20198642.7 kBtu/ft²320 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.

Program details →

Ownership

No owning organisation shown. Names of private individuals in the disclosure are not published here.

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Location

Address
801 5TH AVE
State
Washington
ZIP
98104
Coordinates
47.60518, -122.33097

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Seattle · biggest emitters

Frequently asked questions

What is F5 Tower's energy grade?

F5 Tower scores 82 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 F5 Tower use?

Its 2025 site energy-use intensity was 48.4 kBtu/ft² (121.6 kBtu/ft² source) across 905,655 sq ft, including 10,026,220 kWh of electricity and 66,861 therms of natural gas.

What are F5 Tower's carbon emissions?

F5 Tower reported 552 tCO₂e of greenhouse-gas emissions (0.7 kgCO₂e/ft²) for 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.

Working with Seattle building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.

Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:50518:2025.