Olive Terrace Apts
Multifamily Housing in Seattle, WA · 420 E HOWELL ST · 98122
At a glance
Olive Terrace Apts is a 28,094-square-foot multifamily housing building at 420 E HOWELL ST in Seattle, Washington, built in 1955. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 91 out of 100 (grade A) and a site energy-use intensity of 28.6 kBtu/ft². That score is higher than 49% 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 | 91 (band A) |
| Site EUI | 28.6 kBtu/ft² |
| Source EUI | 80.2 kBtu/ft² |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 235,755 kWh |
| Gross floor area | 28,094 sq ft |
| Source record | seattle:26075:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 91 | 28.6 kBtu/ft² | — | |
| 2024 | — | — | — | |
| 2023 | — | 36.7 kBtu/ft² | 6 tCO₂e | |
| 2022 | — | 36.9 kBtu/ft² | 6 tCO₂e | |
| 2021 | — | 33.4 kBtu/ft² | 5 tCO₂e | |
| 2020 | — | 35.3 kBtu/ft² | 6 tCO₂e | |
| 2019 | — | 32.8 kBtu/ft² | 5 tCO₂e | |
| 2018 | — | 33.5 kBtu/ft² | 6 tCO₂e | |
| 2017 | — | 35.9 kBtu/ft² | 6 tCO₂e | |
| 2016 | 63 | -2 | 32.9 kBtu/ft² | 5 tCO₂e |
| 2015 | 65 | 32.4 kBtu/ft² | 5 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
- 420 E HOWELL ST
- City
- Seattle
- State
- Washington
- ZIP
- 98122
- Coordinates
- 47.61800, -122.32558
Within ~1 km
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- Grand Hyatt Seattlescore —
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See also: most efficient in Seattle · biggest emitters
How does Olive Terrace Apts 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. Olive Terrace Apts's ENERGY STAR score of 91 compares with an average of 83 across the 1,652 that report a score; it scores higher than 49% of them and lower than 48%. Its site EUI of 28.6 kBtu/ft² is about 18% below the average of 34.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 28,094 sq ft, it is about 68% below the average floor area of 86,468 sq ft for those buildings. It was built in 1955, 28 years earlier 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 Olive Terrace Apts's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Olive Terrace Apts, covering report years 2015–2025. Its ENERGY STAR score went from 65 in 2015 to 91 in 2025 (+26 points). Site EUI moved from 32.4 kBtu/ft² (2015) to 28.6 kBtu/ft² (2025), a 12% decrease. Reported emissions went from 5 tCO₂e to 6 tCO₂e over the same span (up 13%).
What does an ENERGY STAR score of 91 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 91 means the building performs better than about 91% of its national peers. BuildingCensus bands the score into report-card grades; 91 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. Olive Terrace Apts's 28.6 kBtu/ft² across 28,094 sq ft works out to about 0.8 billion Btu (235 MWh-equivalent) in 2025. Its source EUI of 80.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 235,755 kWh of electricity for the year.
Which law requires Olive Terrace Apts to report its energy use?
Olive Terrace Apts 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:26075:2025). 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
- Park Royal Apartments· 28,080 sq ft · score 88 (A)
- Sir Galahad Apt· 28,058 sq ft · EUI 25.3 kBtu/ft²
- Boylston Place· 28,038 sq ft · score 99 (A)
- Harbor Square Apts· 28,033 sq ft · score 100 (A)
- Magnolia Villager Condominium· 27,997 sq ft · score 68 (C)
- Culp Apts· 27,996 sq ft
- 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 Olive Terrace Apts's energy grade?
Olive Terrace Apts scores 91 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 Olive Terrace Apts use?
Its 2025 site energy-use intensity was 28.6 kBtu/ft² (80.2 kBtu/ft² source) across 28,094 sq ft, including 235,755 kWh of electricity.
What are Olive Terrace Apts's carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is Olive Terrace Apts?
Olive Terrace Apts is at 420 E HOWELL ST, in Seattle, Washington 98122. Its coordinates are 47.61800, -122.32558 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Olive Terrace Apts and when was it built?
Olive Terrace Apts has 28,094 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1955 as its year built. It is classed as multifamily housing.
Is Olive Terrace Apts 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, “Olive Terrace Apts, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/olive-terrace-apts-4f04f9a5 (data as of October 2, 2026).