Biggest building emitters in Cambridge

Top 100 by reported greenhouse-gas emissions under BEUDO, latest disclosure year per building. 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).

At a glance

250 Massachusetts Avenue is Cambridge's biggest reported building emitter, at 19,906 tCO₂e in its 2024 disclosure. The 100 buildings ranked here reported 444,063 tCO₂e together — 58% of the 767,222 tCO₂e disclosed by all 902 Cambridge buildings.

Top 100 by reported emissions

#	Building	City	Emissions	Score	Floor area
1	250 Massachusetts Avenue	Cambridge	19,906 tCO₂e	–—	1,362,662 sq ft
2	75 Ames Street	Cambridge	13,521 tCO₂e	–—	373,871 sq ft
3	43 VASSAR ST	Cambridge	10,961 tCO₂e	–—	418,663 sq ft
4	250 Massachusetts Avenue	Cambridge	10,345 tCO₂e	–—	517,029 sq ft
5	330 Mount Auburn St	Cambridge	10,200 tCO₂e	B76	652,524 sq ft
6	12 Cambridge Center	Cambridge	9,993 tCO₂e	–—	293,912 sq ft
7	500 MAIN ST	Cambridge	9,320 tCO₂e	–—	367,689 sq ft
8	31 AMES ST	Cambridge	9,113 tCO₂e	–—	260,390 sq ft
9	52 Oxford St	Cambridge	8,452 tCO₂e	–—	551,387 sq ft
10	360 Binney St	Cambridge	8,342 tCO₂e	–—	349,767 sq ft
11	555 Technology Square	Cambridge	7,889 tCO₂e	–—	457,000 sq ft
12	15 Cambridge Center	Cambridge	7,336 tCO₂e	–—	245,405 sq ft
13	301 Binney Street	Cambridge	7,160 tCO₂e	–—	447,187 sq ft
14	415 Main Street	Cambridge	7,064 tCO₂e	–—	231,028 sq ft
15	100 Technology Square	Cambridge	6,516 tCO₂e	D1	255,441 sq ft
16	1493 Cambridge Street	Cambridge	6,465 tCO₂e	D33	360,250 sq ft
17	100 Binney	Cambridge	6,401 tCO₂e	–—	430,305 sq ft
18	105 MASSACHUSETTS AVE (REAR)	Cambridge	6,358 tCO₂e	–—	183,169 sq ft
19	675 W Kendall Street	Cambridge	5,706 tCO₂e	–—	311,279 sq ft
20	50-60 Binney ST	Cambridge	5,641 tCO₂e	–—	532,739 sq ft
21	60 Vassar Street	Cambridge	5,639 tCO₂e	–—	237,777 sq ft
22	21 AMES ST	Cambridge	5,474 tCO₂e	–—	133,552 sq ft
23	One Hampshire St	Cambridge	5,357 tCO₂e	D5	361,302 sq ft
24	12 Oxford St	Cambridge	5,346 tCO₂e	–—	261,875 sq ft
25	350 Water St	Cambridge	5,230 tCO₂e	–—	273,077 sq ft
26	15 Oxford St	Cambridge	5,221 tCO₂e	–—	173,885 sq ft
27	45 Sidney Street	Cambridge	5,216 tCO₂e	–—	277,000 sq ft
28	40 Landsdowne St	Cambridge	5,173 tCO₂e	–—	214,638 sq ft
29	238 Main Street	Cambridge	4,958 tCO₂e	–—	424,430 sq ft
30	9 Cambridge Center	Cambridge	4,933 tCO₂e	–—	253,819 sq ft
31	1 Portland Street	Cambridge	4,851 tCO₂e	–—	229,330 sq ft
32	810 Main St	Cambridge	4,837 tCO₂e	–—	157,000 sq ft
33	500 Technology Square	Cambridge	4,787 tCO₂e	–—	210,000 sq ft
34	32 VASSAR ST	Cambridge	4,730 tCO₂e	–—	464,005 sq ft
35	250 Binney Street	Cambridge	4,694 tCO₂e	–—	67,362 sq ft
36	35 Landsdowne Street	Cambridge	4,633 tCO₂e	–—	202,423 sq ft
37	222 Jacobs Street	Cambridge	4,585 tCO₂e	–—	466,713 sq ft
38	200 Technology Square	Cambridge	4,509 tCO₂e	–—	177,161 sq ft
39	21 AMES ST	Cambridge	4,355 tCO₂e	–—	143,682 sq ft
40	140 First Street	Cambridge	4,206 tCO₂e	–—	408,259 sq ft
41	205 Alewife Brook Parkway	Cambridge	4,166 tCO₂e	–—	28,054 sq ft
42	400 Technology Square	Cambridge	4,038 tCO₂e	–—	212,123 sq ft
43	320 Bent Street	Cambridge	4,027 tCO₂e	–—	195,198 sq ft
44	50 AMES ST	Cambridge	3,886 tCO₂e	–—	112,799 sq ft
45	303 Binney St	Cambridge	3,847 tCO₂e	–—	480,000 sq ft
46	120 VASSAR ST	Cambridge	3,827 tCO₂e	–—	122,080 sq ft
47	50 VASSAR ST	Cambridge	3,747 tCO₂e	–—	145,819 sq ft
48	300 Technology Square	Cambridge	3,574 tCO₂e	D1	175,609 sq ft
49	610 Main Street	Cambridge	3,512 tCO₂e	–—	278,738 sq ft
50	640 Memorial Drive	Cambridge	3,483 tCO₂e	–—	225,745 sq ft
51	8 Charles River Dam	Cambridge	3,481 tCO₂e	–—	460,555 sq ft
52	215 1st ST	Cambridge	3,380 tCO₂e	D15	366,723 sq ft
53	45 CARLETON ST	Cambridge	3,324 tCO₂e	–—	156,676 sq ft
54	24 Oxford St	Cambridge	3,323 tCO₂e	–—	219,498 sq ft
55	700 Main Street	Cambridge	3,317 tCO₂e	–—	168,879 sq ft
56	210 BENT ST	Cambridge	3,163 tCO₂e	–—	142,919 sq ft
57	320 Charles Street	Cambridge	3,083 tCO₂e	–—	99,513 sq ft
58	21 AMES ST	Cambridge	3,058 tCO₂e	–—	116,490 sq ft
59	100 Cambridge Side Place	Cambridge	3,053 tCO₂e	–—	747,697 sq ft
60	One Broadway	Cambridge	3,047 tCO₂e	B74	392,085 sq ft
61	65 Landsdowne Sreet	Cambridge	3,046 tCO₂e	–—	122,410 sq ft
62	650 E Kendall Street	Cambridge	3,016 tCO₂e	D38	328,136 sq ft
63	1575 Cambridge Street	Cambridge	3,010 tCO₂e	–—	352,622 sq ft
64	245 First Street	Cambridge	2,996 tCO₂e	–—	307,004 sq ft
65	35 Cambridge Park Drive	Cambridge	2,992 tCO₂e	–—	224,252 sq ft
66	150 Cambridge Park Drive	Cambridge	2,986 tCO₂e	–—	247,548 sq ft
67	1 Oxford St	Cambridge	2,970 tCO₂e	–—	355,836 sq ft
68	150 ALBANY ST	Cambridge	2,944 tCO₂e	–—	144,308 sq ft
69	65 Landsdowne Street	Cambridge	2,939 tCO₂e	–—	124,986 sq ft
70	One Kendall Square	Cambridge	2,912 tCO₂e	–—	246,793 sq ft
71	50 Broadway	Cambridge	2,877 tCO₂e	D22	334,260 sq ft
72	25 AMES ST	Cambridge	2,702 tCO₂e	–—	133,798 sq ft
73	200 Cambridge Park Drive	Cambridge	2,645 tCO₂e	D10	221,676 sq ft
74	60 VASSAR ST	Cambridge	2,589 tCO₂e	–—	75,808 sq ft
75	575 Memorial Drive	Cambridge	2,582 tCO₂e	D37	347,000 sq ft
76	182 MEMORIAL DR	Cambridge	2,486 tCO₂e	–—	121,650 sq ft
77	60 VASSAR ST	Cambridge	2,465 tCO₂e	–—	133,545 sq ft
78	16 Divinity Ave	Cambridge	2,419 tCO₂e	–—	73,101 sq ft
79	1 Bennet Street	Cambridge	2,377 tCO₂e	C67	498,000 sq ft
80	70 VASSAR ST	Cambridge	2,372 tCO₂e	–—	102,833 sq ft
81	900 Memorial Drive	Cambridge	2,370 tCO₂e	D47	450,849 sq ft
82	150 2nd ST	Cambridge	2,365 tCO₂e	–—	153,336 sq ft
83	750 Main Street	Cambridge	2,358 tCO₂e	–—	172,609 sq ft
84	One Leighton Street	Cambridge	2,346 tCO₂e	D21	612,952 sq ft
85	50 VASSAR ST	Cambridge	2,325 tCO₂e	–—	84,329 sq ft
86	200 Sidney Street	Cambridge	2,250 tCO₂e	–—	191,904 sq ft
87	64 Sidney Street	Cambridge	2,239 tCO₂e	–—	126,000 sq ft
88	250 Fresh Pond Parkway	Cambridge	2,227 tCO₂e	–—	155,632 sq ft
89	450 Water Street	Cambridge	2,202 tCO₂e	D46	350,500 sq ft
90	88 Sidney St	Cambridge	2,178 tCO₂e	–—	145,275 sq ft
91	300 3 Rd ST	Cambridge	2,109 tCO₂e	–—	131,639 sq ft
92	314 Main St.	Cambridge	2,100 tCO₂e	B80	482,220 sq ft
93	33 MASSACHUSETTS AVE (REAR)	Cambridge	2,073 tCO₂e	–—	160,124 sq ft
94	75 AMHERST ST	Cambridge	2,046 tCO₂e	–—	173,875 sq ft
95	1586 Massachusetts Avenue	Cambridge	2,045 tCO₂e	–—	262,602 sq ft
96	399 Binney Street	Cambridge	2,013 tCO₂e	–—	165,194 sq ft
97	One Kendall Square	Cambridge	1,996 tCO₂e	D10	140,058 sq ft
98	20 Acorn Park Drive	Cambridge	1,938 tCO₂e	–—	164,481 sq ft
99	12 Oxford St	Cambridge	1,903 tCO₂e	–—	56,215 sq ft
100	441 Morgan Avenue	Cambridge	1,899 tCO₂e	–—	388,025 sq ft

What do Cambridge's biggest-emitting buildings have in common?

By property type the list is led by laboratory (44), college/university (27) and mixed use property (8). Their average site EUI is 319.4 kBtu/ft², about 173% above the citywide average of 117.2 kBtu/ft². Combined they cover 27.6 million square feet; the median ranked building has 231,028 sq ft.

The ranking orders Cambridge's disclosed buildings by total reported greenhouse-gas emissions in their latest report year; figures far outside what a building of that type and size can emit are treated as data-entry errors and left out.

More Cambridge rankings and data

Frequently asked questions

Which Cambridge building emits the most carbon?

250 Massachusetts Avenue reported 19,906 tCO₂e in its latest BEUDO disclosure — the highest in Cambridge. 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).

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, “Biggest-emitting buildings in Cambridge”, https://buildingcensus.com/rankings/biggest-emitters/cambridge (data as of October 2, 2026).