BuildingCensus
B

Uptown Condo

Multifamily Housing in Seattle, WA · 520 2ND AVE W · 98119

At a glance

Uptown Condo is a 35,655-square-foot multifamily housing building at 520 2ND AVE W in Seattle, Washington, built in 1992. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 79 out of 100 (grade B), a site energy-use intensity of 28.5 kBtu/ft² and 5 tCO₂e of greenhouse-gas emissions. That score is higher than 27% of the 1,652 scored multifamily housing buildings in Seattle.

ENERGY STAR score
79
band B · 2025
Site EUI
28.5
kBtu/ft²
GHG emissions
5
tCO₂e
GHG intensity
0.2
kgCO₂e/ft²
Floor area
35,655
sq ft
Year built
1992
vintage
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85–10070–8455–691–54
This entry + 6 nearby

Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025

Benchmarking record

FieldValue
ENERGY STAR score79 (band B)
Site EUI28.5 kBtu/ft²
Source EUI79.9 kBtu/ft²
GHG emissions5 tCO₂e
GHG intensity0.2 kgCO₂e/ft²
Electricity250,038 kWh
Natural gas6 therms
Gross floor area35,655 sq ft
Source recordseattle:27039:2025

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2025latest79+428.5 kBtu/ft²5 tCO₂e
202475+329.6 kBtu/ft²5 tCO₂e
202372+1930.4 kBtu/ft²5 tCO₂e
202253-1342.6 kBtu/ft²22 tCO₂e
202166-542.1 kBtu/ft²30 tCO₂e
202071+240.6 kBtu/ft²31 tCO₂e
201969+1240.6 kBtu/ft²30 tCO₂e
201857+1742.9 kBtu/ft²29 tCO₂e
201740+1147.8 kBtu/ft²32 tCO₂e
201629-4946.6 kBtu/ft²29 tCO₂e
20157829.1 kBtu/ft²29 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.

Program details →

Ownership

No owning organisation shown. Names of private individuals in the disclosure are not published here.

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Location

Address
520 2ND AVE W
State
Washington
ZIP
98119
Coordinates
47.62403, -122.35911

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Seattle · biggest emitters

How does Uptown Condo 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. Uptown Condo's ENERGY STAR score of 79 compares with an average of 83 across the 1,652 that report a score; it scores higher than 27% of them and lower than 71%. Its site EUI of 28.5 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. Its emissions intensity of 0.2 kgCO₂e/ft² is about 77% below the group average of 0.7 kgCO₂e/ft².

At 35,655 sq ft, it is about 59% below the average floor area of 86,468 sq ft for those buildings. It was built in 1992, 9 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 Uptown Condo's energy performance changed over time?

BuildingCensus holds 11 Seattle disclosures for Uptown Condo, covering report years 2015–2025. Its ENERGY STAR score went from 78 in 2015 to 79 in 2025 (+1 points). Site EUI moved from 29.1 kBtu/ft² (2015) to 28.5 kBtu/ft² (2025), a 2% decrease. Reported emissions went from 29 tCO₂e to 5 tCO₂e over the same span (down 83%).

What does an ENERGY STAR score of 79 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 79 means the building performs better than about 79% of its national peers. BuildingCensus bands the score into report-card grades; 79 falls in band B — above median (70–84). 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. Uptown Condo's 28.5 kBtu/ft² across 35,655 sq ft works out to about 1 billion Btu (298 MWh-equivalent) in 2025. Its source EUI of 79.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 250,038 kWh of electricity and 6 therms of natural gas for the year.

Which law requires Uptown Condo to report its energy use?

Uptown Condo 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:27039:2025). 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

Frequently asked questions

What is Uptown Condo's energy grade?

Uptown Condo scores 79 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.

How much energy does Uptown Condo use?

Its 2025 site energy-use intensity was 28.5 kBtu/ft² (79.9 kBtu/ft² source) across 35,655 sq ft, including 250,038 kWh of electricity and 6 therms of natural gas.

What are Uptown Condo's carbon emissions?

Uptown Condo reported 5 tCO₂e of greenhouse-gas emissions (0.2 kgCO₂e/ft²) for 2025.

Where is Uptown Condo?

Uptown Condo is at 520 2ND AVE W, in Seattle, Washington 98119. Its coordinates are 47.62403, -122.35911 (latitude, longitude), as published in the Building Energy Benchmarking file.

How big is Uptown Condo and when was it built?

Uptown Condo has 35,655 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1992 as its year built. It is classed as multifamily housing.

Is Uptown Condo 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, “Uptown Condo, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/uptown-condo-0712461a (data as of October 2, 2026).