At a glance
Delmont St is a 13,450-square-foot library in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported a site energy-use intensity of 32.8 kBtu/ft² and 25 tCO₂e of greenhouse-gas emissions.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 32.8 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 25 tCO₂e |
| GHG intensity | — |
| Electricity | 126,677 kWh |
| Gross floor area | 13,450 sq ft |
| Source record | boston:106893:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 32.8 kBtu/ft² | 25 tCO₂e | |
| 2023 | — | 44.0 kBtu/ft² | 34 tCO₂e | |
| 2022 | — | 46.2 kBtu/ft² | 45 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
- Delmont St
- City
- Boston
- State
- Massachusetts
- ZIP
- 2122.
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 Delmont 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 32.8 kBtu/ft² is about half of the average of 70.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 13,450 sq ft, it is about 74% below the average floor area of 52,053 sq ft for those buildings.
How has Delmont St's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for Delmont St, covering report years 2022–2024. Site EUI moved from 46.2 kBtu/ft² (2022) to 32.8 kBtu/ft² (2024), a 29% decrease. Reported emissions went from 45 tCO₂e to 25 tCO₂e over the same span (down 45%).
What does a site EUI of 32.8 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. Delmont St's 32.8 kBtu/ft² across 13,450 sq ft works out to about 0.4 billion Btu (129 MWh-equivalent) in 2024. The disclosure also reports 126,677 kWh of electricity for the year.
Which law requires Delmont St to report its energy use?
Delmont 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:106893:2024). 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
- 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
- 27 Richmond St· 9,940 sq ft · EUI 79.8 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 Delmont St's energy grade?
Delmont St did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 32.8 kBtu/ft².
How much energy does Delmont St use?
Its 2024 site energy-use intensity was 32.8 kBtu/ft² across 13,450 sq ft, including 126,677 kWh of electricity.
What are Delmont St's carbon emissions?
Delmont St reported 25 tCO₂e of greenhouse-gas emissions for 2024.
Where is Delmont St?
Delmont St is in Boston, Massachusetts 2122.
How big is Delmont St and when was it built?
Delmont St has 13,450 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as library.
Is Delmont 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, “Delmont St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/delmont-st-0f5e15c4 (data as of July 9, 2026).