BuildingCensus
C

Park Lane Place Condominium

Multifamily Housing in Seattle, WA · 400 BOYLSTON AVE E · 98102

At a glance

Park Lane Place Condominium is a 32,430-square-foot multifamily housing building at 400 BOYLSTON AVE E in Seattle, Washington, built in 1931. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 65 out of 100 (grade C), a site energy-use intensity of 41.8 kBtu/ft² and 30 tCO₂e of greenhouse-gas emissions. That score is higher than 14% of the 1,652 scored multifamily housing buildings in Seattle.

ENERGY STAR score
65
band C · 2025
Site EUI
41.8
kBtu/ft²
GHG emissions
30
tCO₂e
GHG intensity
0.9
kgCO₂e/ft²
Floor area
32,430
sq ft
Year built
1931
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 score65 (band C)
Site EUI41.8 kBtu/ft²
Source EUI91.6 kBtu/ft²
GHG emissions30 tCO₂e
GHG intensity0.9 kgCO₂e/ft²
Electricity259,223 kWh
Natural gas4,714 therms
Gross floor area32,430 sq ft
Source recordseattle:27352:2025

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2025latest65-141.8 kBtu/ft²30 tCO₂e
202466+140.4 kBtu/ft²27 tCO₂e
202365+141.1 kBtu/ft²28 tCO₂e
202264-142.7 kBtu/ft²29 tCO₂e
202165+241.5 kBtu/ft²28 tCO₂e
202063-141.1 kBtu/ft²28 tCO₂e
201964-141.1 kBtu/ft²28 tCO₂e
201865+640.8 kBtu/ft²29 tCO₂e
201759-2344.2 kBtu/ft²32 tCO₂e
201682+426.1 kBtu/ft²5 tCO₂e
20157825.1 kBtu/ft²5 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.

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Ownership

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

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Location

Address
400 BOYLSTON AVE E
State
Washington
ZIP
98102
Coordinates
47.62212, -122.32293

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Seattle · biggest emitters

How does Park Lane Place Condominium 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. Park Lane Place Condominium's ENERGY STAR score of 65 compares with an average of 83 across the 1,652 that report a score; it scores higher than 14% of them and lower than 85%. Its site EUI of 41.8 kBtu/ft² is about 20% above the average of 34.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 0.9 kgCO₂e/ft² is about 31% above the group average of 0.7 kgCO₂e/ft².

At 32,430 sq ft, it is about 62% below the average floor area of 86,468 sq ft for those buildings. It was built in 1931, 52 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 Park Lane Place Condominium's energy performance changed over time?

BuildingCensus holds 11 Seattle disclosures for Park Lane Place Condominium, covering report years 2015–2025. Its ENERGY STAR score went from 78 in 2015 to 65 in 2025 (-13 points); its best year on file was 2016, at 82. Site EUI moved from 25.1 kBtu/ft² (2015) to 41.8 kBtu/ft² (2025), an 67% increase. Reported emissions went from 5 tCO₂e to 30 tCO₂e over the same span (up 537%).

What does an ENERGY STAR score of 65 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 65 means the building performs better than about 65% of its national peers. BuildingCensus bands the score into report-card grades; 65 falls in band C — below median (55–69). It sits 10 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. Park Lane Place Condominium's 41.8 kBtu/ft² across 32,430 sq ft works out to about 1.4 billion Btu (397 MWh-equivalent) in 2025. Its source EUI of 91.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 259,223 kWh of electricity and 4,714 therms of natural gas for the year.

Which law requires Park Lane Place Condominium to report its energy use?

Park Lane Place Condominium 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:27352:2025). 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 Park Lane Place Condominium's energy grade?

Park Lane Place Condominium scores 65 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 Park Lane Place Condominium use?

Its 2025 site energy-use intensity was 41.8 kBtu/ft² (91.6 kBtu/ft² source) across 32,430 sq ft, including 259,223 kWh of electricity and 4,714 therms of natural gas.

What are Park Lane Place Condominium's carbon emissions?

Park Lane Place Condominium reported 30 tCO₂e of greenhouse-gas emissions (0.9 kgCO₂e/ft²) for 2025.

Where is Park Lane Place Condominium?

Park Lane Place Condominium is at 400 BOYLSTON AVE E, in Seattle, Washington 98102. Its coordinates are 47.62212, -122.32293 (latitude, longitude), as published in the Building Energy Benchmarking file.

How big is Park Lane Place Condominium and when was it built?

Park Lane Place Condominium has 32,430 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1931 as its year built. It is classed as multifamily housing.

Is Park Lane Place Condominium 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, “Park Lane Place Condominium, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/park-lane-place-condominium-237775ac (data as of October 2, 2026).