Rock Creek Century Llc, 20420
Office in Montgomery County, MD · 20420 Century Boulevard · 20874
At a glance
Rock Creek Century Llc, 20420 is a 37,388-square-foot office building at 20420 Century Boulevard in Montgomery County, Maryland, built in 2000. In its 2024 Montgomery County benchmarking disclosure it reported an ENERGY STAR score of 45 out of 100 (grade D), a site energy-use intensity of 71.1 kBtu/ft² and 191 tCO₂e of greenhouse-gas emissions. That score is higher than 22% 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 | 45 (band D) |
| Site EUI | 71.1 kBtu/ft² |
| Source EUI | 141.2 kBtu/ft² |
| GHG emissions | 191 tCO₂e |
| GHG intensity | — |
| Electricity | 416,780 kWh |
| Natural gas | 12,364 therms |
| Gross floor area | 37,388 sq ft |
| Source record | montgomery_county:16882816:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 45 | +12 | 71.1 kBtu/ft² | 191 tCO₂e |
| 2023 | 33 | 85.2 kBtu/ft² | 226 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
- 20420 Century Boulevard
- State
- Maryland
- ZIP
- 20874
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 Rock Creek Century Llc, 20420 compare with other office buildings in Montgomery County?
The latest disclosures cover 414 office buildings in Montgomery County, out of 1,766 buildings citywide. Rock Creek Century Llc, 20420's ENERGY STAR score of 45 compares with an average of 63 across the 325 that report a score; it scores higher than 22% of them and lower than 77%. Its site EUI of 71.1 kBtu/ft² is roughly in line with the average of 66.5 kBtu/ft².
At 37,388 sq ft, it is about 72% below the average floor area of 132,356 sq ft for those buildings. It was built in 2000, 13 years later 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 Rock Creek Century Llc, 20420's energy performance changed over time?
BuildingCensus holds 2 Montgomery County disclosures for Rock Creek Century Llc, 20420, covering report years 2023–2024. Its ENERGY STAR score went from 33 in 2023 to 45 in 2024 (+12 points). Site EUI moved from 85.2 kBtu/ft² (2023) to 71.1 kBtu/ft² (2024), a 17% decrease. Reported emissions went from 226 tCO₂e to 191 tCO₂e over the same span (down 16%).
What does an ENERGY STAR score of 45 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 45 means the building performs better than about 45% of its national peers. BuildingCensus bands the score into report-card grades; 45 falls in band D — lowest band (1–54). It sits 30 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. Rock Creek Century Llc, 20420's 71.1 kBtu/ft² across 37,388 sq ft works out to about 2.7 billion Btu (779 MWh-equivalent) in 2024. Its source EUI of 141.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 416,780 kWh of electricity and 12,364 therms of natural gas for the year.
Which law requires Rock Creek Century Llc, 20420 to report its energy use?
Rock Creek Century Llc, 20420 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:16882816:2024). 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
- Talbot· 36,950 sq ft · score 20 (D)
- Fenton· 36,684 sq ft · score 60 (C)
- Oland Professional Center - Building 3· 36,628 sq ft · score 75 (B)
- The Gillco Building· 36,588 sq ft · score 61 (C)
- Dorchester· 36,068 sq ft · score 22 (D)
- Brit-Beco West· 35,689 sq ft · score 100 (A)
- 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 Rock Creek Century Llc, 20420's energy grade?
Rock Creek Century Llc, 20420 scores 45 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 Rock Creek Century Llc, 20420 use?
Its 2024 site energy-use intensity was 71.1 kBtu/ft² (141.2 kBtu/ft² source) across 37,388 sq ft, including 416,780 kWh of electricity and 12,364 therms of natural gas.
What are Rock Creek Century Llc, 20420's carbon emissions?
Rock Creek Century Llc, 20420 reported 191 tCO₂e of greenhouse-gas emissions for 2024.
Where is Rock Creek Century Llc, 20420?
Rock Creek Century Llc, 20420 is at 20420 Century Boulevard, in Montgomery County, Maryland 20874.
How big is Rock Creek Century Llc, 20420 and when was it built?
Rock Creek Century Llc, 20420 has 37,388 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2000 as its year built. It is classed as office.
Is Rock Creek Century Llc, 20420 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, “Rock Creek Century Llc, 20420, Montgomery County, Maryland — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/montgomery-county/rock-creek-century-llc-20420-5c7b6be3 (data as of October 2, 2026).