15 Lambert Street
Multifamily Housing in Cambridge, MA
At a glance
15 Lambert Street is a 215,544-square-foot multifamily housing building in Cambridge, Massachusetts, built in 1974. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 44 out of 100 (grade D), a site energy-use intensity of 83.0 kBtu/ft² and 1,062 tCO₂e of greenhouse-gas emissions. That score is higher than 14% of the 155 scored multifamily housing buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 44 (band D) |
| Site EUI | 83.0 kBtu/ft² |
| Source EUI | 134.6 kBtu/ft² |
| GHG emissions | 1,062 tCO₂e |
| GHG intensity | — |
| Electricity | 1,711,280 kWh |
| Natural gas | 120,529 therms |
| Water use | 7,971 kgal |
| Gross floor area | 215,544 sq ft |
| Source record | cambridge:B1445:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 44 | -11 | 83.0 kBtu/ft² | 1,062 tCO₂e |
| 2023 | 55 | -15 | 77.0 kBtu/ft² | 983 tCO₂e |
| 2022 | 70 | +6 | 73.0 kBtu/ft² | 875 tCO₂e |
| 2021 | 64 | +5 | 59.2 kBtu/ft² | 710 tCO₂e |
| 2020 | 59 | +25 | 71.8 kBtu/ft² | 805 tCO₂e |
| 2019 | 34 | +1 | 105.6 kBtu/ft² | 1,090 tCO₂e |
| 2018 | 33 | +6 | 112.2 kBtu/ft² | 1,171 tCO₂e |
| 2017 | 27 | +5 | 114.2 kBtu/ft² | 1,214 tCO₂e |
| 2016 | 22 | -1 | 116.0 kBtu/ft² | 1,240 tCO₂e |
| 2015 | 23 | 120.6 kBtu/ft² | 1,294 tCO₂e |
Compliance context
BEUDO
Cambridge's 2023 BEUDO amendments require non-residential buildings of 100,000+ sq ft to reach net-zero emissions by 2035 (reductions starting 2026) and those of 25,000–100,000 sq ft by 2050 (starting 2030).
Ownership
MILLERS RIVER HOLDING LLC,
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Location
- Address
- 15 Lambert Street
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.37270, -71.08720
Within ~1 km
Nearby benchmarked buildings
- 145 Broadwayscore 91
Office · 490,000 sq ft
- 303 Binney Stscore —
Laboratory · 480,000 sq ft
- 301 Binney Streetscore —
Laboratory · 447,187 sq ft
- 100 Binneyscore —
Office · 430,305 sq ft
- 285 Third Stscore 78
Multifamily Housing · 424,525 sq ft
- 125-75 Binney STscore —
Laboratory · 388,433 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 15 Lambert Street compare with other multifamily housing buildings in Cambridge?
The latest disclosures cover 187 multifamily housing buildings in Cambridge, out of 902 buildings citywide. 15 Lambert Street's ENERGY STAR score of 44 compares with an average of 75 across the 155 that report a score; it scores higher than 14% of them and lower than 85%. Its site EUI of 83.0 kBtu/ft² is about 46% above the average of 56.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 215,544 sq ft, it is about 63% above the average floor area of 132,415 sq ft for those buildings. Its 1974 construction date is close to the group's average year built (1973). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has 15 Lambert Street's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 15 Lambert Street, covering report years 2015–2024. Its ENERGY STAR score went from 23 in 2015 to 44 in 2024 (+21 points); its best year on file was 2022, at 70. Site EUI moved from 120.6 kBtu/ft² (2015) to 83.0 kBtu/ft² (2024), a 31% decrease. Reported emissions went from 1,294 tCO₂e to 1,062 tCO₂e over the same span (down 18%).
What does an ENERGY STAR score of 44 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 44 means the building performs better than about 44% of its national peers. BuildingCensus bands the score into report-card grades; 44 falls in band D — lowest band (1–54). It sits 31 points below 75, the threshold for ENERGY STAR certification. In Cambridge, 50% 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. 15 Lambert Street's 83.0 kBtu/ft² across 215,544 sq ft works out to about 17.9 billion Btu (5,243 MWh-equivalent) in 2024. Its source EUI of 134.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,711,280 kWh of electricity, 120,529 therms of natural gas and 7,971 thousand gallons of water for the year.
Which law requires 15 Lambert Street to report its energy use?
15 Lambert Street reports under BEUDO, the legal basis of Cambridge's Building Energy Use Disclosure Ordinance (BEUDO), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record cambridge:B1445:2024). Cambridge's 2023 BEUDO amendments require non-residential buildings of 100,000+ sq ft to reach net-zero emissions by 2035 (reductions starting 2026) and those of 25,000–100,000 sq ft by 2050 (starting 2030).
More multifamily housing buildings in Cambridge
- 195 Binney St.· 213,000 sq ft · score 56 (C)
- 5 Cowperthwaite Street· 211,715 sq ft · score 96 (A)
- 1 Jackson Place· 207,765 sq ft · score 73 (B)
- 1 Jackson Place· 207,765 sq ft · score 88 (A)
- 1 Corcoran Lane· 200,633 sq ft · score 52 (D)
- 131 Washington Street· 200,075 sq ft · score 75 (B)
- Multifamily Housing buildings in Cambridge· 187 benchmarked
- All Cambridge benchmarked buildings· BEUDO
- Most efficient large buildings in Cambridge
- Least efficient large buildings in Cambridge
- Biggest emitters in Cambridge
Frequently asked questions
What is 15 Lambert Street's energy grade?
15 Lambert Street scores 44 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Cambridge disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 15 Lambert Street use?
Its 2024 site energy-use intensity was 83.0 kBtu/ft² (134.6 kBtu/ft² source) across 215,544 sq ft, including 1,711,280 kWh of electricity and 120,529 therms of natural gas.
What are 15 Lambert Street's carbon emissions?
15 Lambert Street reported 1,062 tCO₂e of greenhouse-gas emissions for 2024.
Where is 15 Lambert Street?
15 Lambert Street is in Cambridge, Massachusetts. Its coordinates are 42.37270, -71.08720 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 15 Lambert Street and when was it built?
15 Lambert Street has 215,544 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1974 as its year built. It is classed as multifamily housing.
Is 15 Lambert Street covered by BEUDO?
Yes — it appears in the 2024 Building Energy Use Disclosure Ordinance (BEUDO) disclosure, which lists the buildings reporting under BEUDO.
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About this data
Source: Building Energy Use Disclosure Ordinance (BEUDO) (BEUDO), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “15 Lambert Street, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/15-lambert-street-e330a02b (data as of October 2, 2026).