Asbury Methodist Diamond.Hefner Apartments
Multifamily Housing in Montgomery County, MD · 415 Russell Ave · 20877
At a glance
Asbury Methodist Diamond.Hefner Apartments is a 349,403-square-foot multifamily housing building at 415 Russell Ave in Montgomery County, Maryland, built in 1990. In its 2024 Montgomery County benchmarking disclosure it reported an ENERGY STAR score of 50 out of 100 (grade D), a site energy-use intensity of 54.1 kBtu/ft² and 1,330 tCO₂e of greenhouse-gas emissions. That score is higher than 10% of the 514 scored multifamily housing buildings in Montgomery County.
Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 50 (band D) |
| Site EUI | 54.1 kBtu/ft² |
| Source EUI | 103.9 kBtu/ft² |
| GHG emissions | 1,330 tCO₂e |
| GHG intensity | — |
| Electricity | 2,752,969 kWh |
| Natural gas | 95,140 therms |
| Gross floor area | 349,403 sq ft |
| Source record | montgomery_county:23359915:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 50 | +2 | 54.1 kBtu/ft² | 1,330 tCO₂e |
| 2023 | 48 | 52.2 kBtu/ft² | 1,298 tCO₂e |
Compliance context
Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)
Montgomery County's BEPS (Bill 16-21; regulations approved in 2025) sets declining site-EUI standards for buildings of 25,000+ sq ft, with interim and then final standards later this decade and into the 2030s depending on building type.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 415 Russell Ave
- State
- Maryland
- ZIP
- 20877
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Montgomery County · biggest emitters
How does Asbury Methodist Diamond.Hefner Apartments compare with other multifamily housing buildings in Montgomery County?
The latest disclosures cover 553 multifamily housing buildings in Montgomery County, out of 1,766 buildings citywide. Asbury Methodist Diamond.Hefner Apartments's ENERGY STAR score of 50 compares with an average of 80 across the 514 that report a score; it scores higher than 10% of them and lower than 90%. Its site EUI of 54.1 kBtu/ft² is about 25% above the average of 43.2 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 349,403 sq ft, it is about 76% above the average floor area of 198,668 sq ft for those buildings. Its 1990 construction date is close to the group's average year built (1989). 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 Asbury Methodist Diamond.Hefner Apartments's energy performance changed over time?
BuildingCensus holds 2 Montgomery County disclosures for Asbury Methodist Diamond.Hefner Apartments, covering report years 2023–2024. Its ENERGY STAR score went from 48 in 2023 to 50 in 2024 (+2 points). Site EUI moved from 52.2 kBtu/ft² (2023) to 54.1 kBtu/ft² (2024), an 4% increase. Reported emissions went from 1,298 tCO₂e to 1,330 tCO₂e over the same span (up 2%).
What does an ENERGY STAR score of 50 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 50 means the building performs better than about 50% of its national peers. BuildingCensus bands the score into report-card grades; 50 falls in band D — lowest band (1–54). It sits 25 points below 75, the threshold for ENERGY STAR certification. In Montgomery County, 53% 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. Asbury Methodist Diamond.Hefner Apartments's 54.1 kBtu/ft² across 349,403 sq ft works out to about 18.9 billion Btu (5,540 MWh-equivalent) in 2024. Its source EUI of 103.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,752,969 kWh of electricity and 95,140 therms of natural gas for the year.
Which law requires Asbury Methodist Diamond.Hefner Apartments to report its energy use?
Asbury Methodist Diamond.Hefner Apartments reports under the Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21), the legal basis of Montgomery County's Commercial 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 montgomery_county:23359915:2024). Montgomery County's BEPS (Bill 16-21; regulations approved in 2025) sets declining site-EUI standards for buildings of 25,000+ sq ft, with interim and then final standards later this decade and into the 2030s depending on building type.
More multifamily housing buildings in Montgomery County
- Westchester West· 347,883 sq ft · score 82 (B)
- White Oak Towers· 344,400 sq ft · score 11 (D)
- Cadence At Crown - 113 Ellington Blvd· 343,741 sq ft · EUI 47.7 kBtu/ft²
- Blair Plaza· 342,824 sq ft · score 91 (A)
- Avana Oak Mill - Co (Km001)· 341,698 sq ft · score 4 (D)
- Midtown Bethesda North Condominium· 340,889 sq ft · score 67 (C)
- Multifamily Housing buildings in Montgomery County· 553 benchmarked
- All Montgomery County benchmarked buildings· Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)
- Most efficient large buildings in Montgomery County
- Least efficient large buildings in Montgomery County
- Biggest emitters in Montgomery County
Frequently asked questions
What is Asbury Methodist Diamond.Hefner Apartments's energy grade?
Asbury Methodist Diamond.Hefner Apartments scores 50 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Montgomery County disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Asbury Methodist Diamond.Hefner Apartments use?
Its 2024 site energy-use intensity was 54.1 kBtu/ft² (103.9 kBtu/ft² source) across 349,403 sq ft, including 2,752,969 kWh of electricity and 95,140 therms of natural gas.
What are Asbury Methodist Diamond.Hefner Apartments's carbon emissions?
Asbury Methodist Diamond.Hefner Apartments reported 1,330 tCO₂e of greenhouse-gas emissions for 2024.
Where is Asbury Methodist Diamond.Hefner Apartments?
Asbury Methodist Diamond.Hefner Apartments is at 415 Russell Ave, in Montgomery County, Maryland 20877.
How big is Asbury Methodist Diamond.Hefner Apartments and when was it built?
Asbury Methodist Diamond.Hefner Apartments has 349,403 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1990 as its year built. It is classed as multifamily housing.
Is Asbury Methodist Diamond.Hefner Apartments covered by the Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)?
Yes — it appears in the 2024 Commercial Building Energy Benchmarking disclosure, which lists the buildings reporting under the Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21).
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About this data
Source: Commercial Building Energy Benchmarking (Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Asbury Methodist Diamond.Hefner Apartments, Montgomery County, Maryland — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/montgomery-county/asbury-methodist-diamond-hefner-apartments-bde30f25 (data as of October 2, 2026).