Capital Beltway Building Ii
Office in Montgomery County, MD · 1751 Elton Rd · 20903
At a glance
Capital Beltway Building Ii is a 27,606-square-foot office building at 1751 Elton Rd in Montgomery County, Maryland, built in 1978. In its 2024 Montgomery County benchmarking disclosure it reported an ENERGY STAR score of 56 out of 100 (grade C), a site energy-use intensity of 67.9 kBtu/ft² and 141 tCO₂e of greenhouse-gas emissions. That score is higher than 32% of the 325 scored office buildings in Montgomery County.
Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 56 (band C) |
| Site EUI | 67.9 kBtu/ft² |
| Source EUI | 146.3 kBtu/ft² |
| GHG emissions | 141 tCO₂e |
| GHG intensity | — |
| Electricity | 346,761 kWh |
| Natural gas | 6,916 therms |
| Gross floor area | 27,606 sq ft |
| Source record | montgomery_county:4948051:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 56 | -1 | 67.9 kBtu/ft² | 141 tCO₂e |
| 2023 | 57 | 63.1 kBtu/ft² | 136 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
- 1751 Elton Rd
- State
- Maryland
- ZIP
- 20903
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 Capital Beltway Building Ii compare with other office buildings in Montgomery County?
The latest disclosures cover 414 office buildings in Montgomery County, out of 1,766 buildings citywide. Capital Beltway Building Ii's ENERGY STAR score of 56 compares with an average of 63 across the 325 that report a score; it scores higher than 32% of them and lower than 66%. Its site EUI of 67.9 kBtu/ft² is roughly in line with the average of 66.5 kBtu/ft².
At 27,606 sq ft, it is about 79% below the average floor area of 132,356 sq ft for those buildings. It was built in 1978, 9 years earlier than the group's average year built (1987). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has Capital Beltway Building Ii's energy performance changed over time?
BuildingCensus holds 2 Montgomery County disclosures for Capital Beltway Building Ii, covering report years 2023–2024. Its ENERGY STAR score went from 57 in 2023 to 56 in 2024 (-1 points); its best year on file was 2023, at 57. Site EUI moved from 63.1 kBtu/ft² (2023) to 67.9 kBtu/ft² (2024), an 8% increase. Reported emissions went from 136 tCO₂e to 141 tCO₂e over the same span (up 3%).
What does an ENERGY STAR score of 56 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 56 means the building performs better than about 56% of its national peers. BuildingCensus bands the score into report-card grades; 56 falls in band C — below median (55–69). It sits 19 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. Capital Beltway Building Ii's 67.9 kBtu/ft² across 27,606 sq ft works out to about 1.9 billion Btu (549 MWh-equivalent) in 2024. Its source EUI of 146.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 346,761 kWh of electricity and 6,916 therms of natural gas for the year.
Which law requires Capital Beltway Building Ii to report its energy use?
Capital Beltway Building Ii 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:4948051:2024). 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 office buildings in Montgomery County
- White Oak Professional Center· 27,421 sq ft · score 43 (D)
- The Atrium· 27,280 sq ft · score 60 (C)
- City Hall (1151)· 26,484 sq ft · score 39 (D)
- Tesla - Silver Springs· 26,260 sq ft · score 4 (D)
- 18900 Woodfield Rd· 25,462 sq ft · score 90 (A)
- Eb Clarksburg Llc (22600)· 25,218 sq ft
- Office buildings in Montgomery County· 414 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 Capital Beltway Building Ii's energy grade?
Capital Beltway Building Ii scores 56 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 Montgomery County disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Capital Beltway Building Ii use?
Its 2024 site energy-use intensity was 67.9 kBtu/ft² (146.3 kBtu/ft² source) across 27,606 sq ft, including 346,761 kWh of electricity and 6,916 therms of natural gas.
What are Capital Beltway Building Ii's carbon emissions?
Capital Beltway Building Ii reported 141 tCO₂e of greenhouse-gas emissions for 2024.
Where is Capital Beltway Building Ii?
Capital Beltway Building Ii is at 1751 Elton Rd, in Montgomery County, Maryland 20903.
How big is Capital Beltway Building Ii and when was it built?
Capital Beltway Building Ii has 27,606 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1978 as its year built. It is classed as office.
Is Capital Beltway Building Ii 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, “Capital Beltway Building Ii, Montgomery County, Maryland — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/montgomery-county/capital-beltway-building-ii-498f94d7 (data as of October 2, 2026).