The NYC housing terms
everyone assumes you know.
AMI, DTI, flip tax, post-closing liquidity — the shorthand that shows up in every listing, board package, and closing statement. Every term here comes with a worked example and a named source, and links straight into the calculator that runs the math for you.
Renting
The NYC rental-market convention that a tenant's annual income should be at least 40 times the monthly rent.
NYC law (effective June 11, 2025) making whoever hires a broker responsible for paying that broker's fee — usually the landlord, not the tenant.
A co-signer who agrees to cover rent if the tenant can't — NYC landlords typically require a guarantor's income to be about 80x the monthly rent.
Co-ops
The application dossier a NYC co-op buyer submits for board approval — financials, references, and personal statements, reviewed after mortgage approval is already in hand.
A resale fee a co-op corporation charges when shares change hands, typically 1-3% of sale price and seller-paid — not a government tax.
The monthly fee co-op shareholders pay that bundles building upkeep, a share of the building's underlying mortgage, and a share of its property taxes into one number.
The liquid cash a co-op board requires you to have left over after paying the down payment and closing costs — typically 12+ months of maintenance and mortgage.
Taxes
A NY State buyer-paid tax starting at 1% of full purchase price on residential sales of $1,000,000 or more, stepping up to 3.9% above $25 million.
A NYC/NYS tax on financed real property purchases — about 1.80% of the loan under $500,000, 1.925% at or above — that applies to condos but not co-ops.
Run your own numbers
Every term here feeds into one of our calculators — once you understand the rule, see exactly how it affects your max price or affordable rent.