FAR in Cambridge Residential Zones

Distribution of FAR

These plots show the distribution of floor area ratio in the four property types.

Land area vs floor area

The next plots compare the land area with floor area.

Just the numbers

This table shows the number of conforming and non-conforming properties of each type.

Zone & Type	Mean FAR	Mean permitted FAR	Conforming	Conforming pct	Non-conforming	Non-conforming pct	Total
A-1
Single family	0.39	0.5	215	84%	42	16%	257
Two family	0.39	0.5	11	73%	4	27%	15
Condo building	0.57	0.5	11	61%	7	39%	18
Total	0.4	0.5	237	82%	53	18%	290
A-2
Single family	0.44	0.5	341	70%	143	30%	484
Two family	0.56	0.5	9	30%	21	70%	30
Three family	0.65	0.5	3	50%	3	50%	6
Condo building	0.6	0.5	17	41%	24	59%	41
Total	0.46	0.5	370	66%	191	34%	561
B
Single family	0.52	0.49	682	49%	708	51%	1390
Two family	0.64	0.49	291	25%	868	75%	1159
Three family	0.85	0.49	21	6%	311	94%	332
Condo building	0.72	0.47	134	17%	655	83%	789
Total	0.63	0.49	1128	31%	2542	69%	3670
C
Single family	0.67	0.6	84	42%	114	58%	198
Two family	0.72	0.6	59	31%	132	69%	191
Three family	0.96	0.6	19	17%	93	83%	112
Condo building	0.92	0.6	30	13%	200	87%	230
Total	0.8	0.6	192	26%	539	74%	731
C-1
Single family	0.77	0.75	700	57%	518	43%	1218
Two family	0.84	0.75	413	44%	535	56%	948
Three family	1.17	0.75	104	15%	573	85%	677
Condo building	0.99	0.75	322	28%	814	72%	1136
Total	0.92	0.75	1539	39%	2440	61%	3979
All
Single family	0.59	0.59	2022	57%	1525	43%	3547
Two family	0.72	0.61	783	33%	1560	67%	2343
Three family	1.05	0.66	147	13%	980	87%	1127
Condo building	0.88	0.63	514	23%	1700	77%	2214
Total	0.75	0.61	3466	38%	5765	62%	9231

Where are they?

This map shows the residential properties included in the above charts and table. It is limited to one-, two- and three-family houses and condominium buildings in zones A-1, A-2, B, C, C-1.

Copyright 2017 Kent S Johnson 2017-01-28