UW MEDICINE-LK UNION PHASE II ITHS.ORG
Mixed Use Property in Seattle, WA · 850 REPUBLICAN ST · 98109
At a glance
UW MEDICINE-LK UNION PHASE II ITHS.ORG is a 436,497-square-foot mixed use property building at 850 REPUBLICAN ST in Seattle, Washington, built in 2008. In its 2024 Seattle benchmarking disclosure it reported a site energy-use intensity of 174.1 kBtu/ft² and 954 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 174.1 kBtu/ft² |
| Source EUI | 391.2 kBtu/ft² |
| GHG emissions | 954 tCO₂e |
| GHG intensity | 3.6 kgCO₂e/ft² |
| Electricity | 9,221,216 kWh |
| Natural gas | 145,576 therms |
| Gross floor area | 436,497 sq ft |
| Source record | seattle:488:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 174.1 kBtu/ft² | 954 tCO₂e | |
| 2023 | — | 165.7 kBtu/ft² | 924 tCO₂e | |
| 2022 | — | 178.3 kBtu/ft² | 1,095 tCO₂e | |
| 2021 | — | 179.7 kBtu/ft² | 1,037 tCO₂e | |
| 2020 | — | 172.2 kBtu/ft² | 981 tCO₂e | |
| 2019 | — | 175.5 kBtu/ft² | 1,030 tCO₂e | |
| 2018 | — | 179.8 kBtu/ft² | 1,096 tCO₂e | |
| 2017 | — | 191.4 kBtu/ft² | 1,217 tCO₂e | |
| 2016 | — | 171.2 kBtu/ft² | 983 tCO₂e | |
| 2015 | — | 144.0 kBtu/ft² | 761 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
- 850 REPUBLICAN ST
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.62405, -122.34036
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does UW MEDICINE-LK UNION PHASE II ITHS.ORG compare with other mixed use property buildings in Seattle?
The latest disclosures cover 157 mixed use property buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 174.1 kBtu/ft² is about 153% above the average of 68.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 3.6 kgCO₂e/ft² is about 158% above the group average of 1.4 kgCO₂e/ft².
At 436,497 sq ft, it is about 164% above the average floor area of 165,352 sq ft for those buildings. It was built in 2008, 40 years later than the group's average year built (1968). Across all 24 jurisdictions BuildingCensus covers, the 1,212 mixed use property buildings average an ENERGY STAR score of 69 and a site EUI of 79.8 kBtu/ft².
How has UW MEDICINE-LK UNION PHASE II ITHS.ORG's energy performance changed over time?
BuildingCensus holds 10 Seattle disclosures for UW MEDICINE-LK UNION PHASE II ITHS.ORG, covering report years 2015–2024. Site EUI moved from 144.0 kBtu/ft² (2015) to 174.1 kBtu/ft² (2024), an 21% increase. Reported emissions went from 761 tCO₂e to 954 tCO₂e over the same span (up 25%).
What does a site EUI of 174.1 kBtu/ft² mean?
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. UW MEDICINE-LK UNION PHASE II ITHS.ORG's 174.1 kBtu/ft² across 436,497 sq ft works out to about 76 billion Btu (22,272 MWh-equivalent) in 2024. Its source EUI of 391.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 9,221,216 kWh of electricity and 145,576 therms of natural gas for the year.
Which law requires UW MEDICINE-LK UNION PHASE II ITHS.ORG to report its energy use?
UW MEDICINE-LK UNION PHASE II ITHS.ORG 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 2024 disclosure (source record seattle:488:2024). 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 mixed use property buildings in Seattle
- Uw- Sandpoint Building # 5 (5a,5b,5c,5d)· 384,772 sq ft · EUI 45.5 kBtu/ft²
- First Hill Medical Pavilion (Hart First Hill Llc)· 383,914 sq ft · EUI 78.1 kBtu/ft²
- Metropolitan Park North Building· 380,312 sq ft · EUI 23.3 kBtu/ft²
- Boeing South Park Campus Report· 334,368 sq ft · EUI 134.2 kBtu/ft²
- Fred Meyer Greenwood· 314,958 sq ft · score 86 (A)
- Washington Athletic Club· 305,548 sq ft · EUI 96.4 kBtu/ft²
- Mixed Use Property buildings in Seattle· 157 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 UW MEDICINE-LK UNION PHASE II ITHS.ORG's energy grade?
UW MEDICINE-LK UNION PHASE II ITHS.ORG did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 174.1 kBtu/ft².
How much energy does UW MEDICINE-LK UNION PHASE II ITHS.ORG use?
Its 2024 site energy-use intensity was 174.1 kBtu/ft² (391.2 kBtu/ft² source) across 436,497 sq ft, including 9,221,216 kWh of electricity and 145,576 therms of natural gas.
What are UW MEDICINE-LK UNION PHASE II ITHS.ORG's carbon emissions?
UW MEDICINE-LK UNION PHASE II ITHS.ORG reported 954 tCO₂e of greenhouse-gas emissions (3.6 kgCO₂e/ft²) for 2024.
Where is UW MEDICINE-LK UNION PHASE II ITHS.ORG?
UW MEDICINE-LK UNION PHASE II ITHS.ORG is at 850 REPUBLICAN ST, in Seattle, Washington 98109. Its coordinates are 47.62405, -122.34036 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is UW MEDICINE-LK UNION PHASE II ITHS.ORG and when was it built?
UW MEDICINE-LK UNION PHASE II ITHS.ORG has 436,497 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2008 as its year built. It is classed as mixed use property.
Is UW MEDICINE-LK UNION PHASE II ITHS.ORG covered by the Seattle Energy Benchmarking Ordinance (SMC 22.920)?
Yes — it appears in the 2024 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, “UW MEDICINE-LK UNION PHASE II ITHS.ORG, Seattle, Washington — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/uw-medicine-lk-union-phase-ii-iths-org-a22e7377 (data as of October 2, 2026).