Highlander Apts (Prev Cogir Northgate)
Senior Living Community in Seattle, WA · 11501 15TH AVE NE · 98125
At a glance
Highlander Apts (Prev Cogir Northgate) is a 89,391-square-foot senior living community building at 11501 15TH AVE NE in Seattle, Washington, built in 1962.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Natural gas | 4,687 therms |
| Gross floor area | 89,391 sq ft |
| Source record | seattle:21568:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | — | — | |
| 2024 | — | 33.4 kBtu/ft² | 52 tCO₂e | |
| 2023 | 97 | +27 | 35.7 kBtu/ft² | 72 tCO₂e |
| 2022 | 70 | ±0 | 55.9 kBtu/ft² | 96 tCO₂e |
| 2021 | 70 | +17 | 56.1 kBtu/ft² | 100 tCO₂e |
| 2020 | 53 | -11 | 65.9 kBtu/ft² | 133 tCO₂e |
| 2019 | 64 | +9 | 59.7 kBtu/ft² | 115 tCO₂e |
| 2018 | 55 | 64.0 kBtu/ft² | 124 tCO₂e | |
| 2017 | — | — | 99 tCO₂e | |
| 2016 | 49 | -10 | 60.8 kBtu/ft² | 116 tCO₂e |
| 2015 | 59 | 56.7 kBtu/ft² | 101 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
- 11501 15TH AVE NE
- City
- Seattle
- State
- Washington
- ZIP
- 98125
- Coordinates
- 47.71235, -122.31323
Within ~1 km
Nearby benchmarked buildings
- Owlscore 100
Multifamily Housing · 274,153 sq ft
- The Park At Northgate Apartmentsscore 76
Multifamily Housing · 151,450 sq ft
- Northgate 3 Llcscore 100
Multifamily Housing · 141,793 sq ft
- Northgate Villa Condominiumscore 100
Multifamily Housing · 140,594 sq ft
- Northgate Village Retailscore —
Strip Mall · 98,539 sq ft
- Cedarvale House & Villagescore 86
Multifamily Housing · 88,340 sq ft
See also: most efficient in Seattle · biggest emitters
How does Highlander Apts (Prev Cogir Northgate) compare with other senior living community buildings in Seattle?
The latest disclosures cover 48 senior living community buildings in Seattle, out of 3,871 buildings citywide.
At 89,391 sq ft, it is about 34% below the average floor area of 136,458 sq ft for those buildings. It was built in 1962, 29 years earlier than the group's average year built (1991). Across all 24 jurisdictions BuildingCensus covers, the 1,181 senior living community buildings average an ENERGY STAR score of 71 and a site EUI of 73.6 kBtu/ft².
How has Highlander Apts (Prev Cogir Northgate)'s energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Highlander Apts (Prev Cogir Northgate), covering report years 2015–2025. Its ENERGY STAR score went from 59 in 2015 to 97 in 2023 (+38 points). Site EUI moved from 56.7 kBtu/ft² (2015) to 33.4 kBtu/ft² (2024), a 41% decrease. Reported emissions went from 101 tCO₂e to 52 tCO₂e over the same span (down 49%).
Which law requires Highlander Apts (Prev Cogir Northgate) to report its energy use?
Highlander Apts (Prev Cogir Northgate) 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:21568:2025). 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 senior living community buildings in Seattle
- Norse Home· 83,008 sq ft · score 100 (A)
- Aegis Living On Madison· 79,805 sq ft · score 87 (A)
- Aegis West Seattle· 78,232 sq ft · score 98 (A)
- Admiral Heights· 76,699 sq ft · score 54 (D)
- Aegis Living Lake Union· 73,322 sq ft · score 77 (B)
- Aegis Living In Ravenna· 71,461 sq ft · score 95 (A)
- Senior Living Community buildings in Seattle· 48 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 Highlander Apts (Prev Cogir Northgate)'s energy grade?
Highlander Apts (Prev Cogir Northgate) did not report an ENERGY STAR score in its 2025 disclosure.
How much energy does Highlander Apts (Prev Cogir Northgate) use?
No energy-use intensity was reported for 2025.
What are Highlander Apts (Prev Cogir Northgate)'s carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is Highlander Apts (Prev Cogir Northgate)?
Highlander Apts (Prev Cogir Northgate) is at 11501 15TH AVE NE, in Seattle, Washington 98125. Its coordinates are 47.71235, -122.31323 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Highlander Apts (Prev Cogir Northgate) and when was it built?
Highlander Apts (Prev Cogir Northgate) has 89,391 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1962 as its year built. It is classed as senior living community.
Is Highlander Apts (Prev Cogir Northgate) 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, “Highlander Apts (Prev Cogir Northgate), Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/highlander-apts-prev-cogir-northgate-26acfb00 (data as of October 2, 2026).