The Perry Apartments (Tp36)

How does The Perry Apartments (Tp36) 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. The Perry Apartments (Tp36)'s ENERGY STAR score of 80 compares with an average of 80 across the 514 that report a score; it scores higher than 36% of them and lower than 62%. Its site EUI of 41.7 kBtu/ft² is roughly in line with the average of 43.2 kBtu/ft² — it uses less energy per square foot than the typical building in that group.

At 388,984 sq ft, it is about twice the average floor area of 198,668 sq ft for those buildings. It was built in 2015, 26 years later 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.

How has The Perry Apartments (Tp36)'s energy performance changed over time?

BuildingCensus holds 2 Montgomery County disclosures for The Perry Apartments (Tp36), covering report years 2023–2024. Its ENERGY STAR score went from 87 in 2023 to 80 in 2024 (-7 points); its best year on file was 2023, at 87. Site EUI moved from 40.4 kBtu/ft² (2023) to 41.7 kBtu/ft² (2024), an 3% increase. Reported emissions went from 1,242 tCO₂e to 1,271 tCO₂e over the same span (up 2%).

What does an ENERGY STAR score of 80 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 80 means the building performs better than about 80% of its national peers. BuildingCensus bands the score into report-card grades; 80 falls in band B — above median (70–84). 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. The Perry Apartments (Tp36)'s 41.7 kBtu/ft² across 388,984 sq ft works out to about 16.2 billion Btu (4,754 MWh-equivalent) in 2024. Its source EUI of 97.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,471,286 kWh of electricity and 43,640 therms of natural gas for the year.

Which law requires The Perry Apartments (Tp36) to report its energy use?

The Perry Apartments (Tp36) 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:9639280:2024). 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.