Marian Assisted Living

How does Marian Assisted Living compare with other senior living community buildings in Montgomery County?

The latest disclosures cover 39 senior living community buildings in Montgomery County, out of 1,766 buildings citywide. Marian Assisted Living's ENERGY STAR score of 50 compares with an average of 54 across the 35 that report a score; it scores higher than 46% of them and lower than 49%. Its site EUI of 111.5 kBtu/ft² is about 41% above the average of 79.0 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 35,343 sq ft, it is about 78% below the average floor area of 157,924 sq ft for those buildings. It was built in 1965, 29 years earlier than the group's average year built (1994). Across all 24 jurisdictions BuildingCensus covers, the 1,181 senior living community buildings average an ENERGY STAR score of 71 and a site EUI of 73.6 kBtu/ft².

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. Marian Assisted Living's 111.5 kBtu/ft² across 35,343 sq ft works out to about 3.9 billion Btu (1,155 MWh-equivalent) in 2024. Its source EUI of 181.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 381,382 kWh of electricity and 26,397 therms of natural gas for the year.

Which law requires Marian Assisted Living to report its energy use?

Marian Assisted Living 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:29063422:2024). 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.