435 Warren St
K-12 School in Boston, MA · 2119.
At a glance
435 Warren St is a 43,378-square-foot K-12 school in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 65 out of 100 (grade C), a site energy-use intensity of 67.0 kBtu/ft² and 159 tCO₂e of greenhouse-gas emissions. That score is higher than 55% of the 163 scored K-12 school buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 65 (band C) |
| Site EUI | 67.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 159 tCO₂e |
| GHG intensity | — |
| Electricity | 356,013 kWh |
| Natural gas | 16,900 therms |
| Gross floor area | 43,378 sq ft |
| Source record | boston:101421:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 65 | +12 | 67.0 kBtu/ft² | 159 tCO₂e |
| 2023 | 53 | 74.0 kBtu/ft² | 180 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
BRIDGE BOSTON CHARTER SCHOOL
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Location
- Address
- 435 Warren St
- City
- Boston
- State
- Massachusetts
- ZIP
- 2119.
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 435 Warren St compare with other K-12 school buildings in Boston?
The latest disclosures cover 175 K-12 school buildings in Boston, out of 6,305 buildings citywide. 435 Warren St's ENERGY STAR score of 65 compares with an average of 59 across the 163 that report a score; it scores higher than 55% of them and lower than 45%. Its site EUI of 67.0 kBtu/ft² is roughly in line with the average of 64.5 kBtu/ft².
At 43,378 sq ft, it is about half of the average floor area of 83,066 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 6,548 K-12 school buildings average an ENERGY STAR score of 64 and a site EUI of 52.7 kBtu/ft².
How has 435 Warren St's energy performance changed over time?
BuildingCensus holds 2 Boston disclosures for 435 Warren St, covering report years 2023–2024. Its ENERGY STAR score went from 53 in 2023 to 65 in 2024 (+12 points). Site EUI moved from 74.0 kBtu/ft² (2023) to 67.0 kBtu/ft² (2024), a 9% decrease. Reported emissions went from 180 tCO₂e to 159 tCO₂e over the same span (down 12%).
What does an ENERGY STAR score of 65 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 65 means the building performs better than about 65% of its national peers. BuildingCensus bands the score into report-card grades; 65 falls in band C — below median (55–69). It sits 10 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. 435 Warren St's 67.0 kBtu/ft² across 43,378 sq ft works out to about 2.9 billion Btu (852 MWh-equivalent) in 2024. The disclosure also reports 356,013 kWh of electricity and 16,900 therms of natural gas for the year.
Which law requires 435 Warren St to report its energy use?
435 Warren 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:101421:2024). 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.
More K-12 school buildings in Boston
- 396 Northampton St· 42,996 sq ft · score 36 (D)
- 585 Commercial St· 42,306 sq ft · score 72 (B)
- 70 Worcester St· 41,479 sq ft · score 40 (D)
- 175 Webster St· 41,336 sq ft · score 59 (C)
- 54 Dighton St· 41,016 sq ft · score 57 (C)
- 35 Brookford St· 40,530 sq ft · score 46 (D)
- K-12 School buildings in Boston· 175 benchmarked
- All Boston benchmarked buildings· BERDO 2.0
- Most efficient large buildings in Boston
- Least efficient large buildings in Boston
- Biggest emitters in Boston
Frequently asked questions
What is 435 Warren St's energy grade?
435 Warren St scores 65 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 Boston disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 435 Warren St use?
Its 2024 site energy-use intensity was 67.0 kBtu/ft² across 43,378 sq ft, including 356,013 kWh of electricity and 16,900 therms of natural gas.
What are 435 Warren St's carbon emissions?
435 Warren St reported 159 tCO₂e of greenhouse-gas emissions for 2024.
Where is 435 Warren St?
435 Warren St is in Boston, Massachusetts 2119.
How big is 435 Warren St and when was it built?
435 Warren St has 43,378 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as K-12 school.
Is 435 Warren St 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, “435 Warren St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/435-warren-st-df2a92bf (data as of July 9, 2026).