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Coverage

46,873 of 56,681 columns decided — 82.7% · 9,148 bound (16.1%) · 9,808 still unread

Bound: 9,148; 16.1%; a concept was found and asserted for the column.
Refused: 29,070; 51.3%; the column was read and no concept fits. A verdict, not a gap.
Insufficient: 8,655; 15.3%; read, but the evidence did not settle it.
Unanalysed: 9,808; 17.3%; nobody has read this column yet.

56,681 columns in the coverage ledger · read from /api/field-coverage on citytap-prod · source last observed Oct 10, 2026, 3:51 PM

Where the unread columns are

3,026 datasets, 56,681 catalogued fields, 9,808 of them still unread. Every band below is a share of that, worst first. Open one to see its datasets.

DOB NOW: Certificate of Occupancy

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← What we have understood · Dataset page

Fields catalogued

Understood

Checked, no match

Nobody has looked

Every field decided — Every field carries a verdict — which does not mean every field is understood.

Every field in this dataset

Covered and uncovered alike, in the order the publisher lists them. A field with no verdict is one nobody has looked at yet.

Field	Type	What we know	Meaning	How it was decided	Shared term
c_of_o_number C OF O NUMBER	Text	Checked, no match	—	value_domain_read smallest=CO-000000013 largest=CO-000100459	—
bin BIN	Text	Understood	place.bin Building Identification Number	operator_cohort matched by name, unread	bin
lot LOT	Text	Checked, no match	—	value_domain_read top[8 of 20]={00001×299762; 07501×79284; 00005×41250	—
bbl BBL	Text	Checked, no match	—	value_domain_read	—
c_of_o_issuance_date C OF O ISSUANCE DATE	Text	Understood	time.world_event Something happened	dictionary_read The date the Certificate of Occupancy is issued	—
block BLOCK	Text	Checked, no match	—	value_domain_read smallest=00000 largest=V0179	—
c_of_o_sequence C OF O SEQUENCE #	Number	Checked, no match	—	value_domain_read smallest=CO-000000013 largest=CO-000100459	—
community_board COMMUNITY BOARD	Number	Checked, no match	—	value_domain_read	—
job_filing_name JOB FILING NAME	Text	Checked, no match	—	value_domain_read smallest=CO-000000013 largest=CO-000100459	—
ntaname NTA	Text	Checked, no match	—	value_domain_read	—
street_name STREET NAME	Text	Checked, no match	—	value_domain_read top[8 of 20]={BROADWAY×59200; 5 AVENUE×26897; 3 AVENUE×18689	—
house_no HOUSE NO	Text	Checked, no match	—	value_domain_read top[8 of 20]={1×13236; 100×8599; 2×8575; 10×7820; 200×7595	—
latitude	Number	Understood	geometry.latitude Latitude	value_domain_read smallest=40.499212 largest=40.91159	—
c_of_o_filing_type C OF O FILING TYPE	Text	Understood	category.classification Publisher classification	dictionary_read The type of Certificate of Occupancy requested	—
longitude	Number	Understood	geometry.longitude Longitude	value_domain_read smallest=-74.254967 largest=-73.701863	—
borough BOROUGH	Text	Understood	place.borough Borough	value_domain_read	borough
c_of_o_status C OF O STATUS	Text	Understood	category.status Workflow status	dictionary_read The status of the Certificate of Occupancy	—
citycouncildistrict Council District	Text	Checked, no match	—	value_domain_read	—
zip_code ZIP CODE	Text	Checked, no match	—	value_domain_read	—
number_of_dwelling_units NUMBER OF DWELLING UNITS	Text	Checked, no match	—	value_domain_read top[8 of 20]={0×7531; 2×7491; 1×5647; 8×2000; 3×1953; 10×1820; 4×1423; 6×1209}	—
censustract2010 Census Tract	Number	Not enough to tell	—	value_domain_read	—
application_number APPLICATION NUMBER	Text	Checked, no match	—	value_domain_read smallest=CO-000000013 largest=CO-000100459	—
submitted_date SUBMITTED DATE	Calendar date	Understood	time.period.month Month	value_profile The date the Certificate of Occupancy request is submitted to the Department of Buildings	—
job_type JOB TYPE	Text	Understood	category.classification Publisher classification	dictionary_read Overall job type for the application	—