Aspen Terrace Apartments
Multifamily Housing in Seattle, WA · 1717 BELMONT AVE · 98122
At a glance
Aspen Terrace Apartments is a 42,249-square-foot multifamily housing building at 1717 BELMONT AVE in Seattle, Washington, built in 2020. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 87 out of 100 (grade A), a site energy-use intensity of 51.6 kBtu/ft² and 48 tCO₂e of greenhouse-gas emissions. That score is higher than 41% 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 | 87 (band A) |
| Site EUI | 51.6 kBtu/ft² |
| Source EUI | 113.0 kBtu/ft² |
| GHG emissions | 48 tCO₂e |
| GHG intensity | 1.1 kgCO₂e/ft² |
| Electricity | 413,666 kWh |
| Natural gas | 7,594 therms |
| Gross floor area | 42,249 sq ft |
| Source record | seattle:26266:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 87 | -10 | 51.6 kBtu/ft² | 48 tCO₂e |
| 2024 | 97 | 32.5 kBtu/ft² | 8 tCO₂e | |
| 2023 | — | — | — | |
| 2022 | — | — | — | |
| 2021 | — | — | — |
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
- 1717 BELMONT AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98122
- Coordinates
- 47.61690, -122.32488
Within ~1 km
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How does Aspen Terrace 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. Aspen Terrace Apartments's ENERGY STAR score of 87 compares with an average of 83 across the 1,652 that report a score; it scores higher than 41% of them and lower than 57%. Its site EUI of 51.6 kBtu/ft² is about 48% 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 63% above the group average of 0.7 kgCO₂e/ft².
At 42,249 sq ft, it is about half of the average floor area of 86,468 sq ft for those buildings. It was built in 2020, 37 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 Aspen Terrace Apartments's energy performance changed over time?
BuildingCensus holds 5 Seattle disclosures for Aspen Terrace Apartments, covering report years 2021–2025. Its ENERGY STAR score went from 97 in 2024 to 87 in 2025 (-10 points); its best year on file was 2024, at 97. Site EUI moved from 32.5 kBtu/ft² (2024) to 51.6 kBtu/ft² (2025), an 59% increase. Reported emissions went from 8 tCO₂e to 48 tCO₂e over the same span (up 497%).
What does an ENERGY STAR score of 87 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 87 means the building performs better than about 87% of its national peers. BuildingCensus bands the score into report-card grades; 87 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. Aspen Terrace Apartments's 51.6 kBtu/ft² across 42,249 sq ft works out to about 2.2 billion Btu (639 MWh-equivalent) in 2025. Its source EUI of 113.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 413,666 kWh of electricity and 7,594 therms of natural gas for the year.
Which law requires Aspen Terrace Apartments to report its energy use?
Aspen Terrace 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:26266:2025). 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
- Campus View Apts· 42,189 sq ft · score 91 (A)
- Point Elliott Condominium· 42,188 sq ft · EUI 32.2 kBtu/ft²
- Park Manor Apts· 42,182 sq ft · score 77 (B)
- Sgt Jose Cangas, Sr. Apartments· 42,169 sq ft · score 71 (B)
- Cornerstone Of Queen Anne Condominium· 42,093 sq ft · score 55 (C)
- Jet On Boylston Flats· 42,090 sq ft · score 97 (A)
- 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 Aspen Terrace Apartments's energy grade?
Aspen Terrace Apartments scores 87 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 Aspen Terrace Apartments use?
Its 2025 site energy-use intensity was 51.6 kBtu/ft² (113.0 kBtu/ft² source) across 42,249 sq ft, including 413,666 kWh of electricity and 7,594 therms of natural gas.
What are Aspen Terrace Apartments's carbon emissions?
Aspen Terrace Apartments reported 48 tCO₂e of greenhouse-gas emissions (1.1 kgCO₂e/ft²) for 2025.
Where is Aspen Terrace Apartments?
Aspen Terrace Apartments is at 1717 BELMONT AVE, in Seattle, Washington 98122. Its coordinates are 47.61690, -122.32488 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Aspen Terrace Apartments and when was it built?
Aspen Terrace Apartments has 42,249 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2020 as its year built. It is classed as multifamily housing.
Is Aspen Terrace 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).
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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, “Aspen Terrace Apartments, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/aspen-terrace-apartments-4908e00d (data as of October 2, 2026).