University House - Wallingford
Multifamily Housing in Seattle, WA · 4400 STONE WAY N · 98103
At a glance
University House - Wallingford is a 217,146-square-foot multifamily housing building at 4400 STONE WAY N in Seattle, Washington, built in 1997. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 54 out of 100 (grade D), a site energy-use intensity of 46.5 kBtu/ft² and 178 tCO₂e of greenhouse-gas emissions. That score is higher than 10% of the 1,652 scored multifamily housing buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 54 (band D) |
| Site EUI | 46.5 kBtu/ft² |
| Source EUI | 96.4 kBtu/ft² |
| GHG emissions | 178 tCO₂e |
| GHG intensity | 1.1 kgCO₂e/ft² |
| Electricity | 1,272,523 kWh |
| Natural gas | 30,686 therms |
| Gross floor area | 217,146 sq ft |
| Source record | seattle:23774:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 54 | -10 | 46.5 kBtu/ft² | 178 tCO₂e |
| 2024 | 64 | +4 | 40.4 kBtu/ft² | 138 tCO₂e |
| 2023 | 60 | +2 | 42.1 kBtu/ft² | 143 tCO₂e |
| 2022 | 58 | +10 | 43.6 kBtu/ft² | 149 tCO₂e |
| 2021 | 48 | +7 | 45.1 kBtu/ft² | 149 tCO₂e |
| 2020 | 41 | +5 | 45.7 kBtu/ft² | 154 tCO₂e |
| 2019 | 36 | +9 | 48.1 kBtu/ft² | 168 tCO₂e |
| 2018 | 27 | 55.5 kBtu/ft² | 241 tCO₂e | |
| 2017 | — | 48.6 kBtu/ft² | 153 tCO₂e | |
| 2016 | 31 | -4 | 47.4 kBtu/ft² | 145 tCO₂e |
| 2015 | 35 | 46.6 kBtu/ft² | 144 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
- 4400 STONE WAY N
- City
- Seattle
- State
- Washington
- ZIP
- 98103
- Coordinates
- 47.66032, -122.34149
Within ~1 km
Nearby benchmarked buildings
- Broadstone Vinscore 83
Multifamily Housing · 824,678 sq ft
- Bowman Stonewayscore 99
Multifamily Housing · 426,320 sq ft
- Lincoln High (Sps-District)score 93
K-12 School · 241,066 sq ft
- Prescott Wallingford Apartmentsscore 100
Multifamily Housing · 198,233 sq ft
- Smith & Burnsscore —
Multifamily MR (5-9) · 175,844 sq ft
- Stonehedge Apartmentsscore 97
Multifamily Housing · 158,180 sq ft
See also: most efficient in Seattle · biggest emitters
How does University House - Wallingford 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. University House - Wallingford's ENERGY STAR score of 54 compares with an average of 83 across the 1,652 that report a score; it scores higher than 10% of them and lower than 90%. Its site EUI of 46.5 kBtu/ft² is about 33% above the average of 34.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 1.1 kgCO₂e/ft² is about 60% above the group average of 0.7 kgCO₂e/ft².
At 217,146 sq ft, it is about 151% above the average floor area of 86,468 sq ft for those buildings. It was built in 1997, 14 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 University House - Wallingford's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for University House - Wallingford, covering report years 2015–2025. Its ENERGY STAR score went from 35 in 2015 to 54 in 2025 (+19 points); its best year on file was 2024, at 64. Site EUI moved from 46.6 kBtu/ft² (2015) to 46.5 kBtu/ft² (2025), a 0% decrease. Reported emissions went from 144 tCO₂e to 178 tCO₂e over the same span (up 23%).
What does an ENERGY STAR score of 54 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 54 means the building performs better than about 54% of its national peers. BuildingCensus bands the score into report-card grades; 54 falls in band D — lowest band (1–54). It sits 21 points below 75, the threshold for ENERGY STAR certification. 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. University House - Wallingford's 46.5 kBtu/ft² across 217,146 sq ft works out to about 10.1 billion Btu (2,959 MWh-equivalent) in 2025. Its source EUI of 96.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,272,523 kWh of electricity and 30,686 therms of natural gas for the year.
Which law requires University House - Wallingford to report its energy use?
University House - Wallingford 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:23774:2025). 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
- Linden Square· 214,388 sq ft · score 99 (A)
- Rooster Apts· 213,952 sq ft · score 99 (A)
- Amli Wallingford Apartment-North· 213,576 sq ft · score 99 (A)
- Mercy Magnuson Place - Building 9 - Sand Point· 213,076 sq ft · score 25 (D)
- Link Apartments· 213,016 sq ft · score 94 (A)
- Jefferson Terrace· 212,938 sq ft · score 73 (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 University House - Wallingford's energy grade?
University House - Wallingford scores 54 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does University House - Wallingford use?
Its 2025 site energy-use intensity was 46.5 kBtu/ft² (96.4 kBtu/ft² source) across 217,146 sq ft, including 1,272,523 kWh of electricity and 30,686 therms of natural gas.
What are University House - Wallingford's carbon emissions?
University House - Wallingford reported 178 tCO₂e of greenhouse-gas emissions (1.1 kgCO₂e/ft²) for 2025.
Where is University House - Wallingford?
University House - Wallingford is at 4400 STONE WAY N, in Seattle, Washington 98103. Its coordinates are 47.66032, -122.34149 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is University House - Wallingford and when was it built?
University House - Wallingford has 217,146 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1997 as its year built. It is classed as multifamily housing.
Is University House - Wallingford 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, “University House - Wallingford, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/university-house-wallingford-5847cf00 (data as of October 2, 2026).