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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, 12:56 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.

NYC Citywide Rolling Calendar Sales

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← What we have understood · Dataset page

Fields catalogued

Understood

Checked, no match

Nobody has looked

Most read — At least three quarters of their fields carry a verdict.

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
lot LOT	Number	Checked, no match	—	value_domain_read top[8 of 20]={00001×299762; 07501×79284; 00005×41250	—
sale_date SALE DATE	Calendar date	Understood	time.period.month Month	value_profile Date the property sold	—
land_square_feet LAND SQUARE FEET	Text	Checked, no match	—	dictionary_read The land are of the property listed in square feet	—
building_class_category BUILDING CLASS CATEGORY	Text	Nobody has looked	—	—	—
zip_code ZIP CODE	Text	Understood	place.zip ZIP Code	value_domain_read	zip
residential_units RESIDENTIAL UNITS	Number	Checked, no match	—	dictionary_read units at the listed property	—
ease_ment EASE-MENT	Text	Checked, no match	—	dictionary_read An easement is a right, such as a right of way	—
total_units TOTAL UNITS	Number	Checked, no match	—	dictionary_read units at the listed property	—
commercial_units COMMERCIAL UNITS	Number	Checked, no match	—	dictionary_read units at the listed property	—
tax_class_at_time_of_sale TAX CLASS AT TIME OF SALE	Number	Understood	category.classification Publisher classification	value_profile smallest=1 largest=4 top[4]={1×418420; 2×367178; 4×60006; 3×3}	—
apartment_number APARTMENT NUMBER	Text	Checked, no match	—	value_domain_read top[8 of 20]={3A×3106; 3B×2981; 2×2865; 2A×2832; 2B×2797; 1×2775; 4A×2604; 4B×2453}	—
block BLOCK	Text	Checked, no match	—	value_domain_read smallest=00000 largest=V0179	—
gross_square_feet GROSS SQUARE FEET	Number	Checked, no match	—	dictionary_read including the land area and space within any building structure	—
address ADDRESS	Text	Nobody has looked	—	—	—
building_class_at_present BUILDING CLASS AT PRESENT	Text	Nobody has looked	—	—	—
borough BOROUGH	Text	Understood	place.borough Borough	value_domain_read	borough
tax_class_at_present TAX CLASS AT PRESENT	Text	Nobody has looked	—	—	—
neighborhood NEIGHBORHOOD	Text	Checked, no match	—	dictionary_read DOF assessors determine the neighborhood name in the course of valuing properties.	—
building_class_at_time_of BUILDING CLASS AT TIME OF SALE	Text	Nobody has looked	—	—	—
sale_price SALE PRICE	Number	Understood	quantity.money Monetary amount	dictionary_read_underspecified Price paid for the property	—
year_built YEAR BUILT	Text	Checked, no match	—	value_domain_read smallest=1800 largest=35	—