At a glance
City Place Ii (Fiona) is a 271,071-square-foot office building at 500 BOREN AVE N in Seattle, Washington, built in 2009. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 97 out of 100 (grade A), a site energy-use intensity of 38.2 kBtu/ft² and 42 tCO₂e of greenhouse-gas emissions. That score is higher than 90% 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 | 97 (band A) |
| Site EUI | 38.2 kBtu/ft² |
| Source EUI | 106.3 kBtu/ft² |
| GHG emissions | 42 tCO₂e |
| GHG intensity | 0.2 kgCO₂e/ft² |
| Electricity | 1,935,748 kWh |
| Natural gas | 705 therms |
| Gross floor area | 271,071 sq ft |
| Source record | seattle:473:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 97 | ±0 | 38.2 kBtu/ft² | 42 tCO₂e |
| 2024 | 97 | ±0 | 38.3 kBtu/ft² | 48 tCO₂e |
| 2023 | 97 | +6 | 41.1 kBtu/ft² | 49 tCO₂e |
| 2022 | 91 | +1 | 55.7 kBtu/ft² | 67 tCO₂e |
| 2021 | 90 | 48.0 kBtu/ft² | 54 tCO₂e | |
| 2020 | — | — | — | |
| 2019 | 94 | ±0 | 41.6 kBtu/ft² | 53 tCO₂e |
| 2018 | 94 | +1 | 40.1 kBtu/ft² | 51 tCO₂e |
| 2017 | 93 | -3 | 41.3 kBtu/ft² | 52 tCO₂e |
| 2016 | 96 | ±0 | 42.4 kBtu/ft² | 53 tCO₂e |
| 2015 | 96 | 42.7 kBtu/ft² | 53 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
- 500 BOREN AVE N
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.62383, -122.33560
Within ~1 km
Nearby benchmarked buildings
Office · 1,599,394 sq ft
- Day 1 Tower And Spheres (Amazon)score 93
Office · 1,599,230 sq ft
- Onni South Lake Unionscore 77
Multifamily Housing · 1,546,084 sq ft
- Insignia Condosscore 47
Multifamily Housing · 1,464,631 sq ft
- Amazon Nitroscore 94
Office · 1,323,773 sq ft
- Troy Block (Amazon)score 88
Office · 1,261,155 sq ft
See also: most efficient in Seattle · biggest emitters
How does City Place Ii (Fiona) compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. City Place Ii (Fiona)'s ENERGY STAR score of 97 compares with an average of 76 across the 378 that report a score; it scores higher than 90% of them and lower than 7%. Its site EUI of 38.2 kBtu/ft² is about 15% 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 0.2 kgCO₂e/ft² is about 66% below the group average of 0.7 kgCO₂e/ft².
At 271,071 sq ft, it is about 38% above the average floor area of 196,452 sq ft for those buildings. It was built in 2009, 44 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 City Place Ii (Fiona)'s energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for City Place Ii (Fiona), covering report years 2015–2025. Its ENERGY STAR score went from 96 in 2015 to 97 in 2025 (+1 points); its best year on file was 2023, at 97. Site EUI moved from 42.7 kBtu/ft² (2015) to 38.2 kBtu/ft² (2025), a 11% decrease. Reported emissions went from 53 tCO₂e to 42 tCO₂e over the same span (down 21%).
What does an ENERGY STAR score of 97 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 97 means the building performs better than about 97% of its national peers. BuildingCensus bands the score into report-card grades; 97 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. City Place Ii (Fiona)'s 38.2 kBtu/ft² across 271,071 sq ft works out to about 10.4 billion Btu (3,035 MWh-equivalent) in 2025. Its source EUI of 106.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,935,748 kWh of electricity and 705 therms of natural gas for the year.
Which law requires City Place Ii (Fiona) to report its energy use?
City Place Ii (Fiona) 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:473:2025). 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
- 605 Union Station· 268,130 sq ft · EUI 28.3 kBtu/ft²
- 400 Westlake Building· 268,005 sq ft · score 100 (A)
- PLAZA 600 BUILDING· 265,851 sq ft · score 81 (B)
- Amazon- Unicorn· 254,218 sq ft · score 62 (C)
- 3101 Western (Formerly Airborne Bldg)· 253,103 sq ft · score 3 (D)
- World Trade Center North· 251,044 sq ft · score 100 (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 City Place Ii (Fiona)'s energy grade?
City Place Ii (Fiona) scores 97 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 City Place Ii (Fiona) use?
Its 2025 site energy-use intensity was 38.2 kBtu/ft² (106.3 kBtu/ft² source) across 271,071 sq ft, including 1,935,748 kWh of electricity and 705 therms of natural gas.
What are City Place Ii (Fiona)'s carbon emissions?
City Place Ii (Fiona) reported 42 tCO₂e of greenhouse-gas emissions (0.2 kgCO₂e/ft²) for 2025.
Where is City Place Ii (Fiona)?
City Place Ii (Fiona) is at 500 BOREN AVE N, in Seattle, Washington 98109. Its coordinates are 47.62383, -122.33560 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is City Place Ii (Fiona) and when was it built?
City Place Ii (Fiona) has 271,071 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2009 as its year built. It is classed as office.
Is City Place Ii (Fiona) 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).
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.
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, “City Place Ii (Fiona), Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/city-place-ii-fiona-7f3a51b9 (data as of October 2, 2026).