Longfellow Arms Apartments
Multifamily Housing in Washington, DC, DC · 506 Longfellow St NW · 20011
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 65 (band C) |
| Site EUI | 43.0 kBtu/ft² |
| Source EUI | 95.1 kBtu/ft² |
| GHG emissions | 84 tCO₂e |
| GHG intensity | 3.3 kgCO₂e/ft² |
| Electricity | 215,579 kWh |
| Natural gas | 3,745 therms |
| Water use | 1,087 kgal |
| Gross floor area | 25,802 sq ft |
| Source record | dc:PM20474710:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 65 | +4 | 43.0 kBtu/ft² | 84 tCO₂e |
| 2023 | 61 | -9 | 41.8 kBtu/ft² | 84 tCO₂e |
| 2022 | 70 | 43.0 kBtu/ft² | 85 tCO₂e |
Compliance context
Clean and Affordable Energy Act / BEPS
DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve on 5-year compliance cycles, with penalties for buildings that fail to meet their pathway.
Ownership
LONGFELLOW ARMS NWDC LIMITED PARTNERSHIP
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Location
- Address
- 506 Longfellow St NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20011
- Coordinates
- 38.95722, -77.02067
Within ~1 km
Nearby benchmarked buildings
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- WASHINGTON, DCscore 27
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- Truesdell Education Campusscore 48
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- Longfellow Condominiumscore 81
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See also: most efficient in Washington, DC · biggest emitters
Frequently asked questions
What is Longfellow Arms Apartments's energy grade?
Longfellow Arms Apartments scores 65 out of 100 on ENERGY STAR — band C (Below median (55–69)) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Longfellow Arms Apartments use?
Its 2024 site energy-use intensity was 43.0 kBtu/ft² (95.1 kBtu/ft² source) across 25,802 sq ft, including 215,579 kWh of electricity and 3,745 therms of natural gas.
What are Longfellow Arms Apartments's carbon emissions?
Longfellow Arms Apartments reported 84 tCO₂e of greenhouse-gas emissions (3.3 kgCO₂e/ft²) for 2024. DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve on 5-year compliance cycles, with penalties for buildings that fail to meet their pathway.
Dataset updated . Source: Building Energy Benchmarking disclosure, record dc:PM20474710:2024.