169 Monsignor O'Brien Highway

How does 169 Monsignor O'Brien Highway compare with other multifamily housing buildings in Cambridge?

The latest disclosures cover 187 multifamily housing buildings in Cambridge, out of 902 buildings citywide. 169 Monsignor O'Brien Highway's ENERGY STAR score of 79 compares with an average of 75 across the 155 that report a score; it scores higher than 44% of them and lower than 54%. Its site EUI of 64.7 kBtu/ft² is about 14% above the average of 56.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 81,440 sq ft, it is about 38% below the average floor area of 132,415 sq ft for those buildings. It was built in 1930, 43 years earlier than the group's average year built (1973). 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 169 Monsignor O'Brien Highway's energy performance changed over time?

BuildingCensus holds 10 Cambridge disclosures for 169 Monsignor O'Brien Highway, covering report years 2015–2024. Its ENERGY STAR score went from 91 in 2015 to 79 in 2024 (-12 points); its best year on file was 2019, at 98. Site EUI moved from 56.7 kBtu/ft² (2015) to 64.7 kBtu/ft² (2024), an 14% increase. Reported emissions went from 360 tCO₂e to 324 tCO₂e over the same span (down 10%).

What does an ENERGY STAR score of 79 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 79 means the building performs better than about 79% of its national peers. BuildingCensus bands the score into report-card grades; 79 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 Cambridge, 50% 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. 169 Monsignor O'Brien Highway's 64.7 kBtu/ft² across 81,440 sq ft works out to about 5.3 billion Btu (1,544 MWh-equivalent) in 2024. Its source EUI of 117.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 679,433 kWh of electricity, 29,502 therms of natural gas and 2,471 thousand gallons of water for the year.

Which law requires 169 Monsignor O'Brien Highway to report its energy use?

169 Monsignor O'Brien Highway reports under BEUDO, the legal basis of Cambridge's Building Energy Use Disclosure Ordinance (BEUDO), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record cambridge:B1631:2024). Cambridge's 2023 BEUDO amendments require non-residential buildings of 100,000+ sq ft to reach net-zero emissions by 2035 (reductions starting 2026) and those of 25,000–100,000 sq ft by 2050 (starting 2030).