Rock Creek Apartments Condominium I

How does Rock Creek Apartments Condominium I 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. Rock Creek Apartments Condominium I's ENERGY STAR score of 88 compares with an average of 80 across the 514 that report a score; it scores higher than 49% of them and lower than 49%. Its site EUI of 64.1 kBtu/ft² is about 48% above the average of 43.2 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 181,440 sq ft, it is roughly in line with the average floor area of 198,668 sq ft for those buildings. It was built in 1948, 41 years earlier than 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.

What does an ENERGY STAR score of 88 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 88 means the building performs better than about 88% of its national peers. BuildingCensus bands the score into report-card grades; 88 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 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 Apartments Condominium I's 64.1 kBtu/ft² across 181,440 sq ft works out to about 11.6 billion Btu (3,409 MWh-equivalent) in 2024. Its source EUI of 91.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 744,842 kWh of electricity and 90,806 therms of natural gas for the year.

Which law requires Rock Creek Apartments Condominium I to report its energy use?

Rock Creek Apartments Condominium I 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:33357001:2024). 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.