Fairfax Apartments Association
Multifamily Housing in Philadelphia, PA · 4231-41 Locust Street · 19104
At a glance
Fairfax Apartments Association is a 42,485-square-foot multifamily housing building at 4231-41 Locust Street in Philadelphia, Pennsylvania, built in 1927. In its 2020 Philadelphia benchmarking disclosure it reported a site energy-use intensity of 339.8 kBtu/ft² and 898 tCO₂e of greenhouse-gas emissions.
Phila. Code §9-3402 / Building Energy Performance Program · reporting year 2020
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 339.8 kBtu/ft² |
| Source EUI | 483.4 kBtu/ft² |
| GHG emissions | 898 tCO₂e |
| GHG intensity | — |
| Electricity | 900,592 kWh |
| Natural gas | 113,650 therms |
| Water use | 8,022 kgal |
| Gross floor area | 42,485 sq ft |
| Source record | philadelphia:13430947:2020 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2020latest | — | 339.8 kBtu/ft² | 898 tCO₂e | |
| 2019 | — | 345.3 kBtu/ft² | 900 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 4231-41 Locust Street
- City
- Philadelphia
- State
- Pennsylvania
- ZIP
- 19104
- Coordinates
- 39.95399, -75.20850
Within ~1 km
Nearby benchmarked buildings
Hospital (General Medical & Surgical) · 1,496,149 sq ft
- West Park Apartmentsscore —
Multifamily Housing · 373,952 sq ft
- West Park Apartmentsscore 24
Multifamily Housing · 373,532 sq ft
- University Park Associatescore —
Multifamily Housing · 325,020 sq ft
- Scion: The Radianscore 19
Multifamily Housing · 287,279 sq ft
- 169-HWS University Cityscore 71
Hotel · 110,000 sq ft
See also: most efficient in Philadelphia · biggest emitters
How does Fairfax Apartments Association 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 339.8 kBtu/ft² is about 511% above the average of 55.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 42,485 sq ft, it is about 66% below the average floor area of 125,469 sq ft for those buildings. It was built in 1927, 44 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 Fairfax Apartments Association's energy performance changed over time?
BuildingCensus holds 2 Philadelphia disclosures for Fairfax Apartments Association, covering report years 2019–2020. Site EUI moved from 345.3 kBtu/ft² (2019) to 339.8 kBtu/ft² (2020), a 2% decrease. Reported emissions went from 900 tCO₂e to 898 tCO₂e over the same span (down 0%).
What does a site EUI of 339.8 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. Fairfax Apartments Association's 339.8 kBtu/ft² across 42,485 sq ft works out to about 14.4 billion Btu (4,231 MWh-equivalent) in 2020. Its source EUI of 483.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 900,592 kWh of electricity, 113,650 therms of natural gas and 8,022 thousand gallons of water for the year.
Which law requires Fairfax Apartments Association to report its energy use?
Fairfax Apartments Association 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 2020 disclosure (source record philadelphia:13430947:2020). 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
- 1234 Lofts· 42,099 sq ft · EUI 32.3 kBtu/ft²
- Revere Terrace· 40,713 sq ft · score 79 (B)
- Pensdale Housing II LP· 40,360 sq ft · score 100 (A)
- Nativity BVM Place (M): 3255 Belgrade Street· 39,145 sq ft · score 3 (D)
- 2103 W Godfrey Avenue AKA 6200 Wister Street· 38,598 sq ft
- Washington Square West (wh84)· 37,386 sq ft · score 2 (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 Fairfax Apartments Association's energy grade?
Fairfax Apartments Association did not report an ENERGY STAR score in its 2020 disclosure, but its site energy-use intensity was 339.8 kBtu/ft².
How much energy does Fairfax Apartments Association use?
Its 2020 site energy-use intensity was 339.8 kBtu/ft² (483.4 kBtu/ft² source) across 42,485 sq ft, including 900,592 kWh of electricity and 113,650 therms of natural gas.
What are Fairfax Apartments Association's carbon emissions?
Fairfax Apartments Association reported 898 tCO₂e of greenhouse-gas emissions for 2020.
Where is Fairfax Apartments Association?
Fairfax Apartments Association is at 4231-41 Locust Street, in Philadelphia, Pennsylvania 19104. Its coordinates are 39.95399, -75.20850 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Fairfax Apartments Association and when was it built?
Fairfax Apartments Association has 42,485 sq ft of gross floor area, as reported in its 2020 disclosure. The disclosure lists 1927 as its year built. It is classed as multifamily housing.
Is Fairfax Apartments Association covered by Phila. Code §9-3402 / Building Energy Performance Program?
Yes — it appears in the 2020 Building Energy Benchmarking disclosure, which lists the buildings reporting under Phila. Code §9-3402 / Building Energy Performance Program.
Working with Philadelphia building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Fairfax Apartments Association, Philadelphia, Pennsylvania — 2020 benchmarking disclosure”, https://buildingcensus.com/buildings/philadelphia/fairfax-apartments-association-848a9045 (data as of July 9, 2026).