1-5 Winthrop Sq
Laboratory in Boston, MA · 2110.
At a glance
1-5 Winthrop Sq is a 112,488-square-foot laboratory building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported a site energy-use intensity of 145.7 kBtu/ft² and 990 tCO₂e of greenhouse-gas emissions.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 145.7 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 990 tCO₂e |
| GHG intensity | — |
| Electricity | 2,748,885 kWh |
| Natural gas | 7,544 therms |
| Gross floor area | 112,488 sq ft |
| Source record | boston:104644:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 145.7 kBtu/ft² | 990 tCO₂e | |
| 2023 | 87 | +15 | 53.6 kBtu/ft² | 138 tCO₂e |
| 2022 | 72 | 60.4 kBtu/ft² | — |
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
NFLSRE 1 WINTHROP LLC
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Location
- Address
- 1-5 Winthrop Sq
- City
- Boston
- State
- Massachusetts
- ZIP
- 2110.
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 1-5 Winthrop Sq compare with other laboratory buildings in Boston?
The latest disclosures cover 50 laboratory buildings in Boston, out of 6,305 buildings citywide. Its site EUI of 145.7 kBtu/ft² is about 38% below the average of 233.3 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 112,488 sq ft, it is about half of the average floor area of 237,834 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 795 laboratory buildings average an ENERGY STAR score of 29 and a site EUI of 231.7 kBtu/ft².
How has 1-5 Winthrop Sq's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 1-5 Winthrop Sq, covering report years 2022–2024. Its ENERGY STAR score went from 72 in 2022 to 87 in 2023 (+15 points). Site EUI moved from 60.4 kBtu/ft² (2022) to 145.7 kBtu/ft² (2024), an 141% increase. Reported emissions went from 138 tCO₂e to 990 tCO₂e over the same span (up 617%).
What does a site EUI of 145.7 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. 1-5 Winthrop Sq's 145.7 kBtu/ft² across 112,488 sq ft works out to about 16.4 billion Btu (4,803 MWh-equivalent) in 2024. The disclosure also reports 2,748,885 kWh of electricity and 7,544 therms of natural gas for the year.
Which law requires 1-5 Winthrop Sq to report its energy use?
1-5 Winthrop Sq 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:104644:2024). 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 laboratory buildings in Boston
- Laboratory building #105833· 105,462 sq ft · EUI 247.0 kBtu/ft²
- 35 Binney St· 104,679 sq ft · EUI 357.0 kBtu/ft²
- Laboratory building #101293· 101,337 sq ft · EUI 161.9 kBtu/ft²
- 71 E Concord St· 83,131 sq ft · EUI 303.7 kBtu/ft²
- 23-29 Blandford Mall· 59,827 sq ft · EUI 119.4 kBtu/ft²
- Laboratory building #104222· 51,880 sq ft · EUI 295.2 kBtu/ft²
- Laboratory buildings in Boston· 50 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 1-5 Winthrop Sq's energy grade?
1-5 Winthrop Sq did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 145.7 kBtu/ft².
How much energy does 1-5 Winthrop Sq use?
Its 2024 site energy-use intensity was 145.7 kBtu/ft² across 112,488 sq ft, including 2,748,885 kWh of electricity and 7,544 therms of natural gas.
What are 1-5 Winthrop Sq's carbon emissions?
1-5 Winthrop Sq reported 990 tCO₂e of greenhouse-gas emissions for 2024.
Where is 1-5 Winthrop Sq?
1-5 Winthrop Sq is in Boston, Massachusetts 2110.
How big is 1-5 Winthrop Sq and when was it built?
1-5 Winthrop Sq has 112,488 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as laboratory.
Is 1-5 Winthrop Sq 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, “1-5 Winthrop Sq, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/1-5-winthrop-sq-3953f5b2 (data as of July 9, 2026).