Northway Square East
Medical Office in Seattle, WA · 2150 N 107TH ST · 98133
At a glance
Northway Square East is a 86,400-square-foot medical office at 2150 N 107TH ST in Seattle, Washington, built in 1974. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 68 out of 100 (grade C), a site energy-use intensity of 91.0 kBtu/ft² and 218 tCO₂e of greenhouse-gas emissions. That score is higher than 53% of the 32 scored medical office buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 68 (band C) |
| Site EUI | 91.0 kBtu/ft² |
| Source EUI | 170.5 kBtu/ft² |
| GHG emissions | 218 tCO₂e |
| GHG intensity | 2.8 kgCO₂e/ft² |
| Electricity | 983,462 kWh |
| Natural gas | 37,655 therms |
| Gross floor area | 86,400 sq ft |
| Source record | seattle:575:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 68 | +16 | 91.0 kBtu/ft² | 218 tCO₂e |
| 2024 | 52 | +11 | 106.7 kBtu/ft² | 269 tCO₂e |
| 2023 | 41 | ±0 | 125.9 kBtu/ft² | 334 tCO₂e |
| 2022 | 41 | +25 | 112.0 kBtu/ft² | 270 tCO₂e |
| 2021 | 16 | -30 | 122.4 kBtu/ft² | 302 tCO₂e |
| 2020 | 46 | -17 | 130.6 kBtu/ft² | 346 tCO₂e |
| 2019 | 63 | +19 | 85.1 kBtu/ft² | 26 tCO₂e |
| 2018 | 44 | -1 | 125.1 kBtu/ft² | 314 tCO₂e |
| 2017 | 45 | -8 | 112.4 kBtu/ft² | 277 tCO₂e |
| 2016 | 53 | -4 | 116.1 kBtu/ft² | 288 tCO₂e |
| 2015 | 57 | 107.5 kBtu/ft² | 254 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
- 2150 N 107TH ST
- City
- Seattle
- State
- Washington
- ZIP
- 98133
- Coordinates
- 47.70744, -122.33171
Within ~1 km
Nearby benchmarked buildings
- Thornton Place (Parent Property)score 61
Multifamily Housing · 771,253 sq ft
- Northgate Northscore —
Mixed Use Property · 705,535 sq ft
Hospital (General Medical & Surgical) · 668,027 sq ft
Parking · 423,569 sq ft
Retail Store · 302,812 sq ft
- Galleriascore 92
Multifamily Housing · 227,233 sq ft
See also: most efficient in Seattle · biggest emitters
How does Northway Square East compare with other medical office buildings in Seattle?
The latest disclosures cover 45 medical office buildings in Seattle, out of 3,871 buildings citywide. Northway Square East's ENERGY STAR score of 68 compares with an average of 60 across the 32 that report a score; it scores higher than 53% of them and lower than 44%. Its site EUI of 91.0 kBtu/ft² is roughly in line with the average of 88.3 kBtu/ft². Its emissions intensity of 2.8 kgCO₂e/ft² is about 86% above the group average of 1.5 kgCO₂e/ft².
At 86,400 sq ft, it is about 41% below the average floor area of 145,612 sq ft for those buildings. It was built in 1974, 5 years earlier than the group's average year built (1979). Across all 24 jurisdictions BuildingCensus covers, the 1,266 medical office buildings average an ENERGY STAR score of 64 and a site EUI of 92.2 kBtu/ft².
How has Northway Square East's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Northway Square East, covering report years 2015–2025. Its ENERGY STAR score went from 57 in 2015 to 68 in 2025 (+11 points). Site EUI moved from 107.5 kBtu/ft² (2015) to 91.0 kBtu/ft² (2025), a 15% decrease. Reported emissions went from 254 tCO₂e to 218 tCO₂e over the same span (down 14%).
What does an ENERGY STAR score of 68 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 68 means the building performs better than about 68% of its national peers. BuildingCensus bands the score into report-card grades; 68 falls in band C — below median (55–69). It sits 7 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. Northway Square East's 91.0 kBtu/ft² across 86,400 sq ft works out to about 7.9 billion Btu (2,304 MWh-equivalent) in 2025. Its source EUI of 170.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 983,462 kWh of electricity and 37,655 therms of natural gas for the year.
Which law requires Northway Square East to report its energy use?
Northway Square East 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:575:2025). 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 medical office buildings in Seattle
- NORTHWEST MEDICAL CENTER-demo'd· 83,448 sq ft · score 54 (D)
- Asian Counseling And Referral Service Building· 76,598 sq ft · score 100 (A)
- Office Building, 2111 N NORTHGATE WAY· 76,105 sq ft · score 29 (D)
- Mcmurray Medical Building· 63,909 sq ft · score 48 (D)
- Scca - Proton Therapy Center· 53,575 sq ft · score 1 (D)
- Springbrook Bldg· 45,264 sq ft · score 37 (D)
- Medical Office buildings in Seattle· 45 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 Northway Square East's energy grade?
Northway Square East scores 68 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Northway Square East use?
Its 2025 site energy-use intensity was 91.0 kBtu/ft² (170.5 kBtu/ft² source) across 86,400 sq ft, including 983,462 kWh of electricity and 37,655 therms of natural gas.
What are Northway Square East's carbon emissions?
Northway Square East reported 218 tCO₂e of greenhouse-gas emissions (2.8 kgCO₂e/ft²) for 2025.
Where is Northway Square East?
Northway Square East is at 2150 N 107TH ST, in Seattle, Washington 98133. Its coordinates are 47.70744, -122.33171 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Northway Square East and when was it built?
Northway Square East has 86,400 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1974 as its year built. It is classed as medical office.
Is Northway Square East 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, “Northway Square East, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/northway-square-east-6266f9ee (data as of October 2, 2026).