Wanamaker House
Multifamily Housing in Philadelphia, PA · 2020 Walnut Street · 19103
At a glance
Wanamaker House is a 200-square-foot multifamily housing building at 2020 Walnut Street in Philadelphia, Pennsylvania, built in 1983. In its 2024 Philadelphia benchmarking disclosure it reported an ENERGY STAR score of 34 out of 100 (grade D), a site energy-use intensity of 61.7 kBtu/ft² and 1,347 tCO₂e of greenhouse-gas emissions.
Some figures below are far outside what a multifamily housingof this size can use or emit — most likely a unit or entry error in the city's file. They are shown exactly as published and are left out of rankings and averages.
Phila. Code §9-3402 / Building Energy Performance Program · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 34 (band D) |
| Site EUI | 61.7 kBtu/ft² |
| Source EUI | 143.3 kBtu/ft² |
| GHG emissions | 1,347 tCO₂e |
| GHG intensity | — |
| Electricity | 3,669,885 kWh |
| Natural gas | 46,740 therms |
| Water use | 11,493 kgal |
| Gross floor area | 200 sq ft |
| Source record | philadelphia:5025694:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 34 | -11 | 61.7 kBtu/ft² | 1,347 tCO₂e |
| 2023 | 45 | +1 | 55.4 kBtu/ft² | 1,228 tCO₂e |
| 2022 | 44 | +9 | 63.4 kBtu/ft² | 1,332 tCO₂e |
| 2021 | 35 | +5 | 65.1 kBtu/ft² | 1,435 tCO₂e |
| 2020 | 30 | -3 | 65.9 kBtu/ft² | 1,504 tCO₂e |
| 2019 | 33 | 67.3 kBtu/ft² | 1,593 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
- 2020 Walnut Street
- City
- Philadelphia
- State
- Pennsylvania
- ZIP
- 19103
- Coordinates
- 39.95066, -75.17483
Within ~1 km
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See also: most efficient in Philadelphia · biggest emitters
How has Wanamaker House's energy performance changed over time?
BuildingCensus holds 6 Philadelphia disclosures for Wanamaker House, covering report years 2019–2024. Its ENERGY STAR score went from 33 in 2019 to 34 in 2024 (+1 points); its best year on file was 2023, at 45. Site EUI moved from 67.3 kBtu/ft² (2019) to 55.4 kBtu/ft² (2023), a 18% decrease. Reported emissions went from 1,593 tCO₂e to 1,228 tCO₂e over the same span (down 23%).
What does an ENERGY STAR score of 34 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 34 means the building performs better than about 34% of its national peers. BuildingCensus bands the score into report-card grades; 34 falls in band D — lowest band (1–54). It sits 41 points below 75, the threshold for ENERGY STAR certification. In Philadelphia, 35% of scored buildings are at 75 or above.
Which law requires Wanamaker House to report its energy use?
Wanamaker House 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:5025694:2024). 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
Frequently asked questions
What is Wanamaker House's energy grade?
Wanamaker House scores 34 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Philadelphia disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Wanamaker House use?
Its 2024 site energy-use intensity was 61.7 kBtu/ft² (143.3 kBtu/ft² source) across 200 sq ft, including 3,669,885 kWh of electricity and 46,740 therms of natural gas.
What are Wanamaker House's carbon emissions?
Wanamaker House reported 1,347 tCO₂e of greenhouse-gas emissions for 2024.
Where is Wanamaker House?
Wanamaker House is at 2020 Walnut Street, in Philadelphia, Pennsylvania 19103. Its coordinates are 39.95066, -75.17483 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Wanamaker House and when was it built?
Wanamaker House has 200 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1983 as its year built. It is classed as multifamily housing.
Is Wanamaker House 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, “Wanamaker House, Philadelphia, Pennsylvania — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/philadelphia/wanamaker-house-ce37c2f2 (data as of July 9, 2026).