1-2 Longfellow Pl
Multifamily Housing in Boston, MA · 2114.
At a glance
1-2 Longfellow Pl is a 443,938-square-foot multifamily housing building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 71 out of 100 (grade B), a site energy-use intensity of 40.4 kBtu/ft² and 1,003 tCO₂e of greenhouse-gas emissions. That score is higher than 38% of the 1,225 scored multifamily housing buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 71 (band B) |
| Site EUI | 40.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,003 tCO₂e |
| GHG intensity | — |
| Electricity | 3,862,049 kWh |
| Natural gas | 47,389 therms |
| Gross floor area | 443,938 sq ft |
| Source record | boston:101714:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 71 | +4 | 40.4 kBtu/ft² | 1,003 tCO₂e |
| 2023 | 67 | +3 | 42.3 kBtu/ft² | 1,089 tCO₂e |
| 2022 | 64 | 44.9 kBtu/ft² | 1,425 tCO₂e |
Compliance context
BERDO 2.0
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.
Ownership
CHARLES RIVER PARK D COMPANY
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Location
- Address
- 1-2 Longfellow Pl
- City
- Boston
- State
- Massachusetts
- ZIP
- 2114.
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Boston · biggest emitters
How does 1-2 Longfellow Pl 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. 1-2 Longfellow Pl's ENERGY STAR score of 71 compares with an average of 71 across the 1,225 that report a score; it scores higher than 38% of them and lower than 61%. Its site EUI of 40.4 kBtu/ft² is about 40% below the average of 67.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 443,938 sq ft, it is about 664% 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 1-2 Longfellow Pl's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 1-2 Longfellow Pl, covering report years 2022–2024. Its ENERGY STAR score went from 64 in 2022 to 71 in 2024 (+7 points). Site EUI moved from 44.9 kBtu/ft² (2022) to 40.4 kBtu/ft² (2024), a 10% decrease. Reported emissions went from 1,425 tCO₂e to 1,003 tCO₂e over the same span (down 30%).
What does an ENERGY STAR score of 71 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 71 means the building performs better than about 71% of its national peers. BuildingCensus bands the score into report-card grades; 71 falls in band B — above median (70–84). It sits 4 points below 75, the threshold for ENERGY STAR certification. 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. 1-2 Longfellow Pl's 40.4 kBtu/ft² across 443,938 sq ft works out to about 17.9 billion Btu (5,256 MWh-equivalent) in 2024. The disclosure also reports 3,862,049 kWh of electricity and 47,389 therms of natural gas for the year.
Which law requires 1-2 Longfellow Pl to report its energy use?
1-2 Longfellow Pl 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:101714:2024). 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.
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Frequently asked questions
What is 1-2 Longfellow Pl's energy grade?
1-2 Longfellow Pl scores 71 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 Boston disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1-2 Longfellow Pl use?
Its 2024 site energy-use intensity was 40.4 kBtu/ft² across 443,938 sq ft, including 3,862,049 kWh of electricity and 47,389 therms of natural gas.
What are 1-2 Longfellow Pl's carbon emissions?
1-2 Longfellow Pl reported 1,003 tCO₂e of greenhouse-gas emissions for 2024.
Where is 1-2 Longfellow Pl?
1-2 Longfellow Pl is in Boston, Massachusetts 2114.
How big is 1-2 Longfellow Pl and when was it built?
1-2 Longfellow Pl has 443,938 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as multifamily housing.
Is 1-2 Longfellow Pl covered by BERDO 2.0?
Yes — it appears in the 2024 Building Emissions Reduction and Disclosure Ordinance disclosure, which lists the buildings reporting under BERDO 2.0.
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About this data
Source: Building Emissions Reduction and Disclosure Ordinance (BERDO 2.0), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “1-2 Longfellow Pl, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/1-2-longfellow-pl-ae5722d3 (data as of July 9, 2026).