Chelsea Condo
Multifamily Housing in Philadelphia, PA · 1515 Locust Street · 19102
At a glance
Chelsea Condo is a 1,855-square-foot multifamily housing building at 1515 Locust Street in Philadelphia, Pennsylvania, built in 1950. In its 2024 Philadelphia benchmarking disclosure it reported a site energy-use intensity of 55.4 kBtu/ft² and 237 tCO₂e of greenhouse-gas emissions.
Phila. Code §9-3402 / Building Energy Performance Program · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 55.4 kBtu/ft² |
| Source EUI | 126.8 kBtu/ft² |
| GHG emissions | 237 tCO₂e |
| GHG intensity | — |
| Electricity | 632,307 kWh |
| Natural gas | 8,867 therms |
| Water use | 1,524 kgal |
| Gross floor area | 1,855 sq ft |
| Source record | philadelphia:5036358:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 55.4 kBtu/ft² | 237 tCO₂e | |
| 2023 | — | 60.2 kBtu/ft² | 268 tCO₂e | |
| 2022 | — | 62.6 kBtu/ft² | 268 tCO₂e | |
| 2021 | — | 61.0 kBtu/ft² | 276 tCO₂e | |
| 2020 | — | 65.7 kBtu/ft² | 298 tCO₂e | |
| 2019 | — | 58.3 kBtu/ft² | 262 tCO₂e |
Compliance context
Phila. Code §9-3402 / Building Energy Performance Program
Philadelphia requires commercial and multifamily buildings of 50,000+ sq ft to benchmark annually; its Building Energy Performance Program additionally requires non-residential buildings of 50,000+ sq ft to complete a tune-up or certify as high-performance every five years, with fines starting at $2,000 for non-compliance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 1515 Locust Street
- City
- Philadelphia
- State
- Pennsylvania
- ZIP
- 19102
- Coordinates
- 39.94873, -75.16676
Within ~1 km
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Multifamily Housing · 887,048 sq ft
See also: most efficient in Philadelphia · biggest emitters
How does Chelsea Condo compare with other multifamily housing buildings in Philadelphia?
The latest disclosures cover 768 multifamily housing buildings in Philadelphia, out of 2,379 buildings citywide. Its site EUI of 55.4 kBtu/ft² is roughly in line with the average of 55.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 1,855 sq ft, it is about 99% below the average floor area of 125,469 sq ft for those buildings. It was built in 1950, 21 years earlier than the group's average year built (1971). 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 Chelsea Condo's energy performance changed over time?
BuildingCensus holds 6 Philadelphia disclosures for Chelsea Condo, covering report years 2019–2024. Site EUI moved from 58.3 kBtu/ft² (2019) to 55.4 kBtu/ft² (2024), a 5% decrease. Reported emissions went from 262 tCO₂e to 237 tCO₂e over the same span (down 10%).
What does a site EUI of 55.4 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. Chelsea Condo's 55.4 kBtu/ft² across 1,855 sq ft works out to about 0.1 billion Btu (30 MWh-equivalent) in 2024. Its source EUI of 126.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 632,307 kWh of electricity, 8,867 therms of natural gas and 1,524 thousand gallons of water for the year.
Which law requires Chelsea Condo to report its energy use?
Chelsea Condo reports under Phila. Code §9-3402 / Building Energy Performance Program, the legal basis of Philadelphia'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 philadelphia:5036358:2024). Philadelphia requires commercial and multifamily buildings of 50,000+ sq ft to benchmark annually; its Building Energy Performance Program additionally requires non-residential buildings of 50,000+ sq ft to complete a tune-up or certify as high-performance every five years, with fines starting at $2,000 for non-compliance.
More multifamily housing buildings in Philadelphia
- (PA2414) - Metroclub Condominiums (201 N 8th St)· 1,738 sq ft · score 88 (A)
- Hopkinson House· 1,700 sq ft · score 100 (A)
- Cobbs Creek: Cobbs Creek· 1,574 sq ft · score 50 (D)
- National at Old City Condominiums· 1,540 sq ft · score 97 (A)
- Murano Condominium ASN· 1,470 sq ft · score 57 (C)
- Old Shoe Factory Condominiums· 1,460 sq ft · score 48 (D)
- Multifamily Housing buildings in Philadelphia· 768 benchmarked
- All Philadelphia benchmarked buildings· Phila. Code §9-3402 / Building Energy Performance Program
- Most efficient large buildings in Philadelphia
- Least efficient large buildings in Philadelphia
- Biggest emitters in Philadelphia
Frequently asked questions
What is Chelsea Condo's energy grade?
Chelsea Condo did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 55.4 kBtu/ft².
How much energy does Chelsea Condo use?
Its 2024 site energy-use intensity was 55.4 kBtu/ft² (126.8 kBtu/ft² source) across 1,855 sq ft, including 632,307 kWh of electricity and 8,867 therms of natural gas.
What are Chelsea Condo's carbon emissions?
Chelsea Condo reported 237 tCO₂e of greenhouse-gas emissions for 2024.
Where is Chelsea Condo?
Chelsea Condo is at 1515 Locust Street, in Philadelphia, Pennsylvania 19102. Its coordinates are 39.94873, -75.16676 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Chelsea Condo and when was it built?
Chelsea Condo has 1,855 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1950 as its year built. It is classed as multifamily housing.
Is Chelsea Condo covered by Phila. Code §9-3402 / Building Energy Performance Program?
Yes — it appears in the 2024 Building Energy Benchmarking disclosure, which lists the buildings reporting under Phila. Code §9-3402 / Building Energy Performance Program.
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About this data
Source: Building Energy Benchmarking (Phila. Code §9-3402 / Building Energy Performance Program), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Chelsea Condo, Philadelphia, Pennsylvania — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/philadelphia/chelsea-condo-2468d2dd (data as of July 9, 2026).