The Hawarden Cooperative Associates
Multifamily Housing in Washington, DC, DC · 1419 R St., NW · 20009
At a glance
The Hawarden Cooperative Associates is a 38,310-square-foot multifamily housing building at 1419 R St., NW in Washington, DC, built in 1910. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 97 out of 100 (grade A), a site energy-use intensity of 47.3 kBtu/ft² and 108 tCO₂e of greenhouse-gas emissions. That score is higher than 87% of the 1,618 scored multifamily housing buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 97 (band A) |
| Site EUI | 47.3 kBtu/ft² |
| Source EUI | 65.4 kBtu/ft² |
| GHG emissions | 108 tCO₂e |
| GHG intensity | 2.8 kgCO₂e/ft² |
| Electricity | 100,812 kWh |
| Natural gas | 14,680 therms |
| Water use | 541 kgal |
| Gross floor area | 38,310 sq ft |
| Source record | dc:PM17725342:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 97 | ±0 | 47.3 kBtu/ft² | 108 tCO₂e |
| 2023 | 97 | +1 | 44.9 kBtu/ft² | 103 tCO₂e |
| 2022 | 96 | 51.0 kBtu/ft² | 116 tCO₂e |
Compliance context
Clean and Affordable Energy Act / BEPS
DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.
Ownership
HARWARDEN COOPERATIVE ASSOCIATES
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Location
- Address
- 1419 R St., NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20009
- Coordinates
- 38.91293, -77.03280
Within ~1 km
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How does The Hawarden Cooperative Associates compare with other multifamily housing buildings in Washington, DC?
The latest disclosures cover 1,799 multifamily housing buildings in Washington, DC, out of 6,870 buildings citywide. The Hawarden Cooperative Associates's ENERGY STAR score of 97 compares with an average of 72 across the 1,618 that report a score; it scores higher than 87% of them and lower than 10%. Its site EUI of 47.3 kBtu/ft² is roughly in line with the average of 51.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 2.8 kgCO₂e/ft² is about 26% below the group average of 3.8 kgCO₂e/ft².
At 38,310 sq ft, it is about 72% below the average floor area of 136,346 sq ft for those buildings. It was built in 1910, 55 years earlier than the group's average year built (1965). 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 The Hawarden Cooperative Associates's energy performance changed over time?
BuildingCensus holds 3 Washington, DC disclosures for The Hawarden Cooperative Associates, covering report years 2022–2024. Its ENERGY STAR score went from 96 in 2022 to 97 in 2024 (+1 points); its best year on file was 2023, at 97. Site EUI moved from 51.0 kBtu/ft² (2022) to 47.3 kBtu/ft² (2024), a 7% decrease. Reported emissions went from 116 tCO₂e to 108 tCO₂e over the same span (down 7%).
What does an ENERGY STAR score of 97 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 97 means the building performs better than about 97% of its national peers. BuildingCensus bands the score into report-card grades; 97 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In Washington, DC, 47% of scored buildings are at 75 or above.
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. The Hawarden Cooperative Associates's 47.3 kBtu/ft² across 38,310 sq ft works out to about 1.8 billion Btu (531 MWh-equivalent) in 2024. Its source EUI of 65.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 100,812 kWh of electricity, 14,680 therms of natural gas and 541 thousand gallons of water for the year.
Which law requires The Hawarden Cooperative Associates to report its energy use?
The Hawarden Cooperative Associates reports under the Clean and Affordable Energy Act / BEPS, the legal basis of Washington, DC'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 dc:PM17725342:2024). DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.
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Frequently asked questions
What is The Hawarden Cooperative Associates's energy grade?
The Hawarden Cooperative Associates scores 97 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 The Hawarden Cooperative Associates use?
Its 2024 site energy-use intensity was 47.3 kBtu/ft² (65.4 kBtu/ft² source) across 38,310 sq ft, including 100,812 kWh of electricity and 14,680 therms of natural gas.
What are The Hawarden Cooperative Associates's carbon emissions?
The Hawarden Cooperative Associates reported 108 tCO₂e of greenhouse-gas emissions (2.8 kgCO₂e/ft²) for 2024.
Where is The Hawarden Cooperative Associates?
The Hawarden Cooperative Associates is at 1419 R St., NW, in Washington, DC 20009. Its coordinates are 38.91293, -77.03280 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is The Hawarden Cooperative Associates and when was it built?
The Hawarden Cooperative Associates has 38,310 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1910 as its year built. It is classed as multifamily housing.
Is The Hawarden Cooperative Associates covered by the Clean and Affordable Energy Act / BEPS?
Yes — it appears in the 2024 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Clean and Affordable Energy Act / BEPS.
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About this data
Source: Building Energy Benchmarking (Clean and Affordable Energy Act / BEPS), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “The Hawarden Cooperative Associates, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/the-hawarden-cooperative-associates-f52a561b (data as of July 9, 2026).