734 Longfellow
Multifamily Housing in Washington, DC, DC · 734 Longfellow St NE · 20011
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 98 (band A) |
| Site EUI | 35.5 kBtu/ft² |
| Source EUI | 72.6 kBtu/ft² |
| GHG emissions | 109 tCO₂e |
| GHG intensity | 2.6 kgCO₂e/ft² |
| Electricity | 249,167 kWh |
| Natural gas | 6,413 therms |
| Water use | 2,453 kgal |
| Gross floor area | 42,071 sq ft |
| Source record | dc:PM19574405:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 98 | +3 | 35.5 kBtu/ft² | 109 tCO₂e |
| 2023 | 95 | -4 | 38.0 kBtu/ft² | 109 tCO₂e |
| 2022 | 99 | 36.1 kBtu/ft² | 110 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
ATHENA LLC
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Location
- Address
- 734 Longfellow St NE
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20011
- Coordinates
- 38.95712, -77.02321
Within ~1 km
Nearby benchmarked buildings
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- Brightwood Education Campusscore 29
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- Truesdell Education Campusscore 48
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- 5601 13th Street NWscore 37
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- Longfellow Condominiumscore 81
Multifamily Housing · 62,986 sq ft
See also: most efficient in Washington, DC · biggest emitters
Frequently asked questions
What is 734 Longfellow's energy grade?
734 Longfellow scores 98 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 734 Longfellow use?
Its 2024 site energy-use intensity was 35.5 kBtu/ft² (72.6 kBtu/ft² source) across 42,071 sq ft, including 249,167 kWh of electricity and 6,413 therms of natural gas.
What are 734 Longfellow's carbon emissions?
734 Longfellow reported 109 tCO₂e of greenhouse-gas emissions (2.6 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:PM19574405:2024.