251 Neponset Ave
Worship Facility in Boston, MA · 2122.
At a glance
251 Neponset Ave is a 22,425-square-foot worship facility in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 57 out of 100 (grade C), a site energy-use intensity of 32.8 kBtu/ft² and 39 tCO₂e of greenhouse-gas emissions. That score is higher than 47% of the 30 scored worship facility buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 57 (band C) |
| Site EUI | 32.8 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 39 tCO₂e |
| GHG intensity | — |
| Electricity | 11,298 kWh |
| Natural gas | 6,972 therms |
| Gross floor area | 22,425 sq ft |
| Source record | boston:105417:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 57 | -3 | 32.8 kBtu/ft² | 39 tCO₂e |
| 2023 | 60 | +10 | 30.3 kBtu/ft² | 36 tCO₂e |
| 2022 | 50 | 37.7 kBtu/ft² | 46 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
ROMAN CATH ARCHBISHOP
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Location
- Address
- 251 Neponset Ave
- 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 251 Neponset Ave compare with other worship facility buildings in Boston?
The latest disclosures cover 41 worship facility buildings in Boston, out of 6,305 buildings citywide. 251 Neponset Ave's ENERGY STAR score of 57 compares with an average of 54 across the 30 that report a score; it scores higher than 47% of them and lower than 47%. Its site EUI of 32.8 kBtu/ft² is about 33% below the average of 48.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 22,425 sq ft, it is about 45% below the average floor area of 40,621 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 1,035 worship facility buildings average an ENERGY STAR score of 50 and a site EUI of 47.8 kBtu/ft².
How has 251 Neponset Ave's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 251 Neponset Ave, covering report years 2022–2024. Its ENERGY STAR score went from 50 in 2022 to 57 in 2024 (+7 points); its best year on file was 2023, at 60. Site EUI moved from 37.7 kBtu/ft² (2022) to 32.8 kBtu/ft² (2024), a 13% decrease. Reported emissions went from 46 tCO₂e to 39 tCO₂e over the same span (down 15%).
What does an ENERGY STAR score of 57 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 57 means the building performs better than about 57% of its national peers. BuildingCensus bands the score into report-card grades; 57 falls in band C — below median (55–69). It sits 18 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. 251 Neponset Ave's 32.8 kBtu/ft² across 22,425 sq ft works out to about 0.7 billion Btu (216 MWh-equivalent) in 2024. The disclosure also reports 11,298 kWh of electricity and 6,972 therms of natural gas for the year.
Which law requires 251 Neponset Ave to report its energy use?
251 Neponset Ave 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:105417:2024). 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 worship facility buildings in Boston
- 147-149 Roxbury St· 22,213 sq ft · score 100 (A)
- 390-400 Sumner St· 22,030 sq ft
- 845 E Broadway· 20,480 sq ft · score 53 (D)
- 735 Commonwealth Avenue· 18,927 sq ft · score 19 (D)
- 1048 Dorchester Ave· 18,346 sq ft · score 69 (C)
- 3 Vfw Pkwy· 10,034 sq ft · score 64 (C)
- Worship Facility buildings in Boston· 41 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 251 Neponset Ave's energy grade?
251 Neponset Ave scores 57 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 251 Neponset Ave use?
Its 2024 site energy-use intensity was 32.8 kBtu/ft² across 22,425 sq ft, including 11,298 kWh of electricity and 6,972 therms of natural gas.
What are 251 Neponset Ave's carbon emissions?
251 Neponset Ave reported 39 tCO₂e of greenhouse-gas emissions for 2024.
Where is 251 Neponset Ave?
251 Neponset Ave is in Boston, Massachusetts 2122.
How big is 251 Neponset Ave and when was it built?
251 Neponset Ave has 22,425 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as worship facility.
Is 251 Neponset Ave 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, “251 Neponset Ave, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/251-neponset-ave-41f8b294 (data as of July 9, 2026).