BuildingCensus
D

Rock Creek Century Llc, 20430

Office in Montgomery County, MD · 20430 Century Boulevard · 20874

At a glance

Rock Creek Century Llc, 20430 is a 31,942-square-foot office building at 20430 Century Boulevard in Montgomery County, Maryland, built in 2000. In its 2024 Montgomery County benchmarking disclosure it reported an ENERGY STAR score of 30 out of 100 (grade D), a site energy-use intensity of 73.5 kBtu/ft² and 188 tCO₂e of greenhouse-gas emissions. That score is higher than 12% of the 325 scored office buildings in Montgomery County.

ENERGY STAR score
30
band D · 2024
Site EUI
73.5
kBtu/ft²
GHG emissions
188
tCO₂e
GHG intensity
—
kgCO₂e/ft²
Floor area
31,942
sq ft
Year built
2000
vintage

Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21) · reporting year 2024

Benchmarking record

FieldValue
ENERGY STAR score30 (band D)
Site EUI73.5 kBtu/ft²
Source EUI177.6 kBtu/ft²
GHG emissions188 tCO₂e
GHG intensity—
Electricity537,420 kWh
Natural gas5,133 therms
Gross floor area31,942 sq ft
Source recordmontgomery_county:16881955:2024

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2024latest30-6273.5 kBtu/ft²188 tCO₂e
20239237.0 kBtu/ft²77 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.

Program details →

Ownership

No owning organisation shown. Names of private individuals in the disclosure are not published here.

Own or manage this building? Claim it to correct the record and get compliance alerts.

Location

Address
20430 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, 20430 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, 20430's ENERGY STAR score of 30 compares with an average of 63 across the 325 that report a score; it scores higher than 12% of them and lower than 87%. Its site EUI of 73.5 kBtu/ft² is about 11% above the average of 66.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 31,942 sq ft, it is about 76% 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, 20430's energy performance changed over time?

BuildingCensus holds 2 Montgomery County disclosures for Rock Creek Century Llc, 20430, covering report years 2023–2024. Its ENERGY STAR score went from 92 in 2023 to 30 in 2024 (-62 points); its best year on file was 2023, at 92. Site EUI moved from 37.0 kBtu/ft² (2023) to 73.5 kBtu/ft² (2024), an 99% increase. Reported emissions went from 77 tCO₂e to 188 tCO₂e over the same span (up 144%).

What does an ENERGY STAR score of 30 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 30 means the building performs better than about 30% of its national peers. BuildingCensus bands the score into report-card grades; 30 falls in band D — lowest band (1–54). It sits 45 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, 20430's 73.5 kBtu/ft² across 31,942 sq ft works out to about 2.3 billion Btu (688 MWh-equivalent) in 2024. Its source EUI of 177.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 537,420 kWh of electricity and 5,133 therms of natural gas for the year.

Which law requires Rock Creek Century Llc, 20430 to report its energy use?

Rock Creek Century Llc, 20430 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:16881955:2024). 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

Frequently asked questions

What is Rock Creek Century Llc, 20430's energy grade?

Rock Creek Century Llc, 20430 scores 30 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, 20430 use?

Its 2024 site energy-use intensity was 73.5 kBtu/ft² (177.6 kBtu/ft² source) across 31,942 sq ft, including 537,420 kWh of electricity and 5,133 therms of natural gas.

What are Rock Creek Century Llc, 20430's carbon emissions?

Rock Creek Century Llc, 20430 reported 188 tCO₂e of greenhouse-gas emissions for 2024.

Where is Rock Creek Century Llc, 20430?

Rock Creek Century Llc, 20430 is at 20430 Century Boulevard, in Montgomery County, Maryland 20874.

How big is Rock Creek Century Llc, 20430 and when was it built?

Rock Creek Century Llc, 20430 has 31,942 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, 20430 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).

Working with Montgomery County building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.

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, 20430, Montgomery County, Maryland — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/montgomery-county/rock-creek-century-llc-20430-9642d82c (data as of October 2, 2026).