4535 And 4550 Ava U District Apartments
Multifamily Housing in Seattle, WA · 4550 11TH AVE NE · 98105
At a glance
4535 And 4550 Ava U District Apartments is a 411,067-square-foot multifamily housing building at 4550 11TH AVE NE in Seattle, Washington, built in 2013. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 23.3 kBtu/ft² and 120 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 23.3 kBtu/ft² |
| Source EUI | 54.5 kBtu/ft² |
| GHG emissions | 120 tCO₂e |
| GHG intensity | 0.4 kgCO₂e/ft² |
| Electricity | 1,480,817 kWh |
| Natural gas | 18,163 therms |
| Gross floor area | 411,067 sq ft |
| Source record | seattle:49825:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 23.3 kBtu/ft² | 120 tCO₂e | |
| 2024 | — | 23.5 kBtu/ft² | 119 tCO₂e | |
| 2023 | — | 25.0 kBtu/ft² | 128 tCO₂e | |
| 2022 | — | 26.2 kBtu/ft² | 126 tCO₂e | |
| 2021 | — | 22.6 kBtu/ft² | 115 tCO₂e | |
| 2020 | — | 22.8 kBtu/ft² | 123 tCO₂e | |
| 2019 | — | 26.0 kBtu/ft² | 156 tCO₂e | |
| 2018 | 100 | ±0 | 26.6 kBtu/ft² | 155 tCO₂e |
| 2017 | 100 | ±0 | 29.0 kBtu/ft² | 168 tCO₂e |
| 2016 | 100 | ±0 | 24.7 kBtu/ft² | 132 tCO₂e |
| 2015 | 100 | 23.6 kBtu/ft² | 107 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
- 4550 11TH AVE NE
- City
- Seattle
- State
- Washington
- ZIP
- 98105
- Coordinates
- 47.66281, -122.31608
Within ~1 km
Nearby benchmarked buildings
College/University · 15,216,474 sq ft
- The Standard At Seattlescore 100
Multifamily Housing · 612,844 sq ft
- Uw Tower Bldg Complexscore —
College/University · 417,035 sq ft
- Chapter Building 1score 100
Office · 328,919 sq ft
- Terry & Maple Hall Uwscore —
Residence Hall/Dormitory · 325,000 sq ft
- Here Student Housing + Safewayscore 97
Multifamily Housing · 316,048 sq ft
See also: most efficient in Seattle · biggest emitters
How does 4535 And 4550 Ava U District Apartments compare with other multifamily housing buildings in Seattle?
The latest disclosures cover 1,971 multifamily housing buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 23.3 kBtu/ft² is about 33% below the average of 34.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.4 kgCO₂e/ft² is about 41% below the group average of 0.7 kgCO₂e/ft².
At 411,067 sq ft, it is about 375% above the average floor area of 86,468 sq ft for those buildings. It was built in 2013, 30 years later than the group's average year built (1983). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has 4535 And 4550 Ava U District Apartments's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for 4535 And 4550 Ava U District Apartments, covering report years 2015–2025. Its ENERGY STAR score was 100 in both 2015 and 2018. Site EUI moved from 23.6 kBtu/ft² (2015) to 23.3 kBtu/ft² (2025), a 1% decrease. Reported emissions went from 107 tCO₂e to 120 tCO₂e over the same span (up 12%).
What does a site EUI of 23.3 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. 4535 And 4550 Ava U District Apartments's 23.3 kBtu/ft² across 411,067 sq ft works out to about 9.6 billion Btu (2,807 MWh-equivalent) in 2025. Its source EUI of 54.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,480,817 kWh of electricity and 18,163 therms of natural gas for the year.
Which law requires 4535 And 4550 Ava U District Apartments to report its energy use?
4535 And 4550 Ava U District Apartments 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:49825:2025). 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 multifamily housing buildings in Seattle
- Spruce West Seattle· 409,825 sq ft · score 61 (C)
- Spire Condos· 400,000 sq ft · score 87 (A)
- Rollin Street Flats· 399,935 sq ft · score 74 (B)
- Avalon Belltown Towers· 397,034 sq ft · score 72 (B)
- One Lakefront At 1287· 395,317 sq ft · score 98 (A)
- Skye At Belltown· 393,841 sq ft · score 76 (B)
- Multifamily Housing buildings in Seattle· 1,971 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 4535 And 4550 Ava U District Apartments's energy grade?
4535 And 4550 Ava U District Apartments did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 23.3 kBtu/ft².
How much energy does 4535 And 4550 Ava U District Apartments use?
Its 2025 site energy-use intensity was 23.3 kBtu/ft² (54.5 kBtu/ft² source) across 411,067 sq ft, including 1,480,817 kWh of electricity and 18,163 therms of natural gas.
What are 4535 And 4550 Ava U District Apartments's carbon emissions?
4535 And 4550 Ava U District Apartments reported 120 tCO₂e of greenhouse-gas emissions (0.4 kgCO₂e/ft²) for 2025.
Where is 4535 And 4550 Ava U District Apartments?
4535 And 4550 Ava U District Apartments is at 4550 11TH AVE NE, in Seattle, Washington 98105. Its coordinates are 47.66281, -122.31608 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 4535 And 4550 Ava U District Apartments and when was it built?
4535 And 4550 Ava U District Apartments has 411,067 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2013 as its year built. It is classed as multifamily housing.
Is 4535 And 4550 Ava U District Apartments 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, “4535 And 4550 Ava U District Apartments, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/4535-and-4550-ava-u-district-apartments-1ee13ec8 (data as of October 2, 2026).