35 Freeport Way

How does 35 Freeport Way compare with other office buildings in Boston?

The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 35 Freeport Way's ENERGY STAR score of 88 compares with an average of 71 across the 356 that report a score; it scores higher than 77% of them and lower than 20%. Its site EUI of 30.1 kBtu/ft² is about half of the average of 61.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.

At 23,000 sq ft, it is about 88% below the average floor area of 191,803 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².

How has 35 Freeport Way's energy performance changed over time?

BuildingCensus holds 3 Boston disclosures for 35 Freeport Way, covering report years 2022–2024. Reported emissions went from 2 tCO₂e to 42 tCO₂e over the same span (up 2065%). Only one of those years carries energy figures.

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 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. 35 Freeport Way's 30.1 kBtu/ft² across 23,000 sq ft works out to about 0.7 billion Btu (203 MWh-equivalent) in 2024. The disclosure also reports 70,718 kWh of electricity and 5,310 therms of natural gas for the year.

Which law requires 35 Freeport Way to report its energy use?

35 Freeport Way 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:104696:2024). 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.