421 Chestnut Street
Multifamily Housing in Philadelphia, PA · 19106
At a glance
421 Chestnut Street is a 956-square-foot multifamily housing building in Philadelphia, Pennsylvania, built in 1857. It is listed in the 2024 Building Energy Benchmarking disclosure without energy figures: no ENERGY STAR score, energy use or emissions were published for it that year. Its most recent reported figures are from 2023, with a site EUI of 68.9 kBtu/ft².
No energy data reported for 2024
421 Chestnut Street appears in the 2024 Building Energy Benchmarking disclosure, but no ENERGY STAR score, energy use or emissions were published for it — the building did not report benchmarking data for that year. Earlier reported years are in the table below.
Floor area on file: 956 sq ft · Built 1857
Source record philadelphia:16436783:2024
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | — | — | |
| 2023 | — | 68.9 kBtu/ft² | 274 tCO₂e | |
| 2022 | — | 90.5 kBtu/ft² | 356 tCO₂e | |
| 2021 | — | 74.2 kBtu/ft² | 327 tCO₂e | |
| 2020 | — | 69.0 kBtu/ft² | 307 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
- 421 Chestnut Street
- City
- Philadelphia
- State
- Pennsylvania
- ZIP
- 19106
- Coordinates
- 39.94925, -75.14824
Within ~1 km
Nearby benchmarked buildings
- The Lits Buildingscore 73
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- 03-1-Philadelphia Head Officescore 18
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- 801 Market Streetscore 85
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- 140399 Plazascore 29
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- Bourse Buildingscore —
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- Chubb Insurancescore 65
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See also: most efficient in Philadelphia · biggest emitters
How has 421 Chestnut Street's energy performance changed over time?
BuildingCensus holds 5 Philadelphia disclosures for 421 Chestnut Street, covering report years 2020–2024. Site EUI moved from 69.0 kBtu/ft² (2020) to 68.9 kBtu/ft² (2023), a 0% decrease. Reported emissions went from 307 tCO₂e to 274 tCO₂e over the same span (down 11%).
Which law requires 421 Chestnut Street to report its energy use?
421 Chestnut Street 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:16436783:2024). 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
- 429 N. 13th Street· 919 sq ft · score 100 (A)
- Locust Point Condominium Association· 894 sq ft · score 68 (C)
- The WireWorks Historic Condominiums· 885 sq ft · score 93 (A)
- Independence Place Owners Association· 860 sq ft · score 50 (D)
- Brewery Condominiums- Brewery House· 823 sq ft · score 88 (A)
- The Franklin Residences· 800 sq ft · score 16 (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 421 Chestnut Street's energy grade?
421 Chestnut Street has no grade: it did not report energy data for 2024. The 2024 Building Energy Benchmarking disclosure lists the building but publishes no ENERGY STAR score, energy use or emissions for it.
Where is 421 Chestnut Street?
421 Chestnut Street is in Philadelphia, Pennsylvania 19106. Its coordinates are 39.94925, -75.14824 (latitude, longitude), as published in the Building Energy Benchmarking file.
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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, “421 Chestnut Street, Philadelphia, Pennsylvania — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/philadelphia/421-chestnut-street-49349378 (data as of July 9, 2026).