24 Bellflower St

How does 24 Bellflower St compare with other multifamily housing buildings in Boston?

The latest disclosures cover 2,174 multifamily housing buildings in Boston, out of 6,305 buildings citywide. 24 Bellflower St's ENERGY STAR score of 80 compares with an average of 71 across the 1,225 that report a score; it scores higher than 49% of them and lower than 49%. Its site EUI of 52.3 kBtu/ft² is about 23% below the average of 67.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.

At 85,000 sq ft, it is about 46% above the average floor area of 58,087 sq ft for those buildings. 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 24 Bellflower St's energy performance changed over time?

BuildingCensus holds 3 Boston disclosures for 24 Bellflower St, covering report years 2022–2024. Its ENERGY STAR score went from 86 in 2022 to 80 in 2024 (-6 points); its best year on file was 2022, at 86. Site EUI moved from 51.6 kBtu/ft² (2022) to 52.3 kBtu/ft² (2024), an 1% increase. Reported emissions went from 271 tCO₂e to 242 tCO₂e over the same span (down 11%).

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 Boston, 52% 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. 24 Bellflower St's 52.3 kBtu/ft² across 85,000 sq ft works out to about 4.4 billion Btu (1,303 MWh-equivalent) in 2024. The disclosure also reports 455,317 kWh of electricity and 28,901 therms of natural gas for the year.

Which law requires 24 Bellflower St to report its energy use?

24 Bellflower St reports under BERDO 2.0, the legal basis of Boston's Building Emissions Reduction and Disclosure Ordinance, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record boston:100942:2024). BERDO 2.0 sets emissions standards for buildings of 20,000+ sq ft or 15+ units, starting in 2025 or 2030 depending on building size, with an alternative-compliance payment of $234 per metric ton of CO₂e over the limit.