At a glance
4623-4627 Washington St is a 13,600-square-foot library in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported a site energy-use intensity of 76.6 kBtu/ft² and 58 tCO₂e of greenhouse-gas emissions.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 76.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 58 tCO₂e |
| GHG intensity | — |
| Electricity | 237,614 kWh |
| Natural gas | 2,307 therms |
| Gross floor area | 13,600 sq ft |
| Source record | boston:106907:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 76.6 kBtu/ft² | 58 tCO₂e | |
| 2023 | — | 70.0 kBtu/ft² | 56 tCO₂e | |
| 2022 | — | 46.7 kBtu/ft² | 44 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
CITY OF BOSTON
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Location
- Address
- 4623-4627 Washington St
- City
- Boston
- State
- Massachusetts
- ZIP
- 2131.
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 4623-4627 Washington St compare with other library buildings in Boston?
The latest disclosures cover 26 library buildings in Boston, out of 6,305 buildings citywide. Its site EUI of 76.6 kBtu/ft² is roughly in line with the average of 70.9 kBtu/ft².
At 13,600 sq ft, it is about 74% below the average floor area of 52,053 sq ft for those buildings.
How has 4623-4627 Washington St's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 4623-4627 Washington St, covering report years 2022–2024. Site EUI moved from 46.7 kBtu/ft² (2022) to 76.6 kBtu/ft² (2024), an 64% increase. Reported emissions went from 44 tCO₂e to 58 tCO₂e over the same span (up 34%).
What does a site EUI of 76.6 kBtu/ft² mean?
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. 4623-4627 Washington St's 76.6 kBtu/ft² across 13,600 sq ft works out to about 1 billion Btu (305 MWh-equivalent) in 2024. The disclosure also reports 237,614 kWh of electricity and 2,307 therms of natural gas for the year.
Which law requires 4623-4627 Washington St to report its energy use?
4623-4627 Washington 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:106907:2024). 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 library buildings in Boston
- Delmont St· 13,450 sq ft · EUI 32.8 kBtu/ft²
- 151 Cambridge St· 12,562 sq ft · EUI 49.2 kBtu/ft²
- 30 South St· 12,500 sq ft · EUI 62.0 kBtu/ft²
- 419 Faneuil St· 11,700 sq ft · EUI 70.0 kBtu/ft²
- 685 Tremont St· 11,342 sq ft · EUI 15.7 kBtu/ft²
- E Broadway· 10,800 sq ft · EUI 55.8 kBtu/ft²
- Library buildings in Boston· 26 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 4623-4627 Washington St's energy grade?
4623-4627 Washington St did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 76.6 kBtu/ft².
How much energy does 4623-4627 Washington St use?
Its 2024 site energy-use intensity was 76.6 kBtu/ft² across 13,600 sq ft, including 237,614 kWh of electricity and 2,307 therms of natural gas.
What are 4623-4627 Washington St's carbon emissions?
4623-4627 Washington St reported 58 tCO₂e of greenhouse-gas emissions for 2024.
Where is 4623-4627 Washington St?
4623-4627 Washington St is in Boston, Massachusetts 2131.
How big is 4623-4627 Washington St and when was it built?
4623-4627 Washington St has 13,600 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as library.
Is 4623-4627 Washington 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, “4623-4627 Washington St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/4623-4627-washington-st-7869d004 (data as of July 9, 2026).