Ho Wong Real Real Estate
K-12 School in Philadelphia, PA · 1025 Callowhill St · 19123
At a glance
Ho Wong Real Real Estate is a 60,000-square-foot K-12 school at 1025 Callowhill St in Philadelphia, Pennsylvania, built in 1980. In its 2023 Philadelphia benchmarking disclosure it reported an ENERGY STAR score of 61 out of 100 (grade C), a site energy-use intensity of 41.4 kBtu/ft² and 153 tCO₂e of greenhouse-gas emissions. That score is higher than 73% of the 281 scored K-12 school buildings in Philadelphia.
Phila. Code §9-3402 / Building Energy Performance Program · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 61 (band C) |
| Site EUI | 41.4 kBtu/ft² |
| Source EUI | 87.1 kBtu/ft² |
| GHG emissions | 153 tCO₂e |
| GHG intensity | — |
| Electricity | 365,133 kWh |
| Natural gas | 8,262 therms |
| Water use | 417 kgal |
| Gross floor area | 60,000 sq ft |
| Source record | philadelphia:4101791:2023 |
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
- 1025 Callowhill St
- City
- Philadelphia
- State
- Pennsylvania
- ZIP
- 19123
- Coordinates
- 39.95908, -75.15612
Within ~1 km
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See also: most efficient in Philadelphia · biggest emitters
How does Ho Wong Real Real Estate compare with other K-12 school buildings in Philadelphia?
The latest disclosures cover 295 K-12 school buildings in Philadelphia, out of 2,379 buildings citywide. Ho Wong Real Real Estate's ENERGY STAR score of 61 compares with an average of 42 across the 281 that report a score; it scores higher than 73% of them and lower than 27%. Its site EUI of 41.4 kBtu/ft² is about 41% below the average of 70.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 60,000 sq ft, it is about 42% below the average floor area of 103,884 sq ft for those buildings. It was built in 1980, 30 years later than the group's average year built (1950). Across all 24 jurisdictions BuildingCensus covers, the 6,548 K-12 school buildings average an ENERGY STAR score of 64 and a site EUI of 52.7 kBtu/ft².
What does an ENERGY STAR score of 61 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 61 means the building performs better than about 61% of its national peers. BuildingCensus bands the score into report-card grades; 61 falls in band C — below median (55–69). It sits 14 points below 75, the threshold for ENERGY STAR certification. In Philadelphia, 35% 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. Ho Wong Real Real Estate's 41.4 kBtu/ft² across 60,000 sq ft works out to about 2.5 billion Btu (728 MWh-equivalent) in 2023. Its source EUI of 87.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 365,133 kWh of electricity, 8,262 therms of natural gas and 417 thousand gallons of water for the year.
Which law requires Ho Wong Real Real Estate to report its energy use?
Ho Wong Real Real Estate 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 2023 disclosure (source record philadelphia:4101791:2023). 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 K-12 school buildings in Philadelphia
- Cassidy· 59,123 sq ft · score 59 (C)
- W.E. Martin· 58,000 sq ft · score 100 (A)
- 2239 West Montgomery Ave· 57,200 sq ft · score 97 (A)
- The City School Poplar Campus· 52,235 sq ft · score 72 (B)
- Kearny· 49,000 sq ft · score 4 (D)
- Rhawnhurst· 46,000 sq ft · score 76 (B)
- K-12 School buildings in Philadelphia· 295 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 Ho Wong Real Real Estate's energy grade?
Ho Wong Real Real Estate scores 61 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2023 Philadelphia disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Ho Wong Real Real Estate use?
Its 2023 site energy-use intensity was 41.4 kBtu/ft² (87.1 kBtu/ft² source) across 60,000 sq ft, including 365,133 kWh of electricity and 8,262 therms of natural gas.
What are Ho Wong Real Real Estate's carbon emissions?
Ho Wong Real Real Estate reported 153 tCO₂e of greenhouse-gas emissions for 2023.
Where is Ho Wong Real Real Estate?
Ho Wong Real Real Estate is at 1025 Callowhill St, in Philadelphia, Pennsylvania 19123. Its coordinates are 39.95908, -75.15612 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Ho Wong Real Real Estate and when was it built?
Ho Wong Real Real Estate has 60,000 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1980 as its year built. It is classed as K-12 school.
Is Ho Wong Real Real Estate covered by Phila. Code §9-3402 / Building Energy Performance Program?
Yes — it appears in the 2023 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, “Ho Wong Real Real Estate, Philadelphia, Pennsylvania — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/philadelphia/ho-wong-real-real-estate-94d9095c (data as of July 9, 2026).