Purchase CEMA NYC: How This Legal Loophole Saves Condo Buyers Thousands

If you're buying a condo, townhouse, or single-family home in New York City and taking out a mortgage, one of your largest closing costs will be the Mortgage Recording Tax (MRT). On a $700,000 loan, that tax alone runs over $13,000. Most buyers pay it without question because they don't know there's a legal mechanism to reduce it significantly.

That mechanism is called a Purchase Consolidation, Extension, and Modification Agreement — a Purchase CEMA. It is not a loophole in the colloquial sense; it is a fully legal, well-established financial instrument in New York real estate. But it requires early coordination and the cooperation of multiple parties, which is why many buyers never use it.

Why the Mortgage Recording Tax Is So Expensive in NYC

New York City levies a Mortgage Recording Tax whenever a mortgage on real property is recorded with the county clerk's office. The rate is:

• 1.80% on loans under $500,000
• 1.925% on loans of $500,000 or more

The lender is required to pay 0.25% of this, leaving the buyer's net obligation at 1.55% (under $500,000) or 1.675% (at or above $500,000).

On a $900,000 loan — reasonable for a two-bedroom condo in many parts of Brooklyn or Manhattan — the buyer's MRT comes to approximately $15,075. That's on top of title insurance, attorney fees, and any applicable mansion tax. It is one of the primary reasons NYC closing costs routinely reach 4% to 6% of the purchase price.

Importantly, this tax applies only to real property — condos, single-family homes, and townhouses where a mortgage is recorded against a deed. Co-op purchases are entirely exempt, because co-op share loans are not mortgages against real property. This is one of the few financial advantages of buying a co-op over a condo in NYC.

What a Purchase CEMA Does

A Purchase CEMA restructures how the mortgage is recorded so that the buyer pays MRT only on the "new money" — the difference between the seller's existing outstanding mortgage balance and the buyer's total loan amount — rather than on the full new mortgage.

Here's how it works:

1. The seller has an existing mortgage with an outstanding balance of, say, $400,000.
2. You, the buyer, need $800,000 in financing.
3. Instead of the seller paying off their mortgage at closing and you recording a brand-new $800,000 mortgage (triggering MRT on $800,000), the seller's lender assigns the existing $400,000 mortgage to your lender.
4. Your lender then consolidates the assigned $400,000 mortgage with $400,000 in new money, creating a single $800,000 mortgage of record.
5. You only pay MRT on the $400,000 in new money.

At the 1.675% net rate for loans above $500,000, the MRT on $800,000 would be $13,400. After the CEMA, you pay MRT only on $400,000, which comes to $6,700 at the 1.55% net rate (since the gap money falls under $500,000). That's a gross saving of $6,700.

In practice, it's more nuanced. The seller also saves on their New York State transfer tax on the assigned portion. By convention, the seller will demand to split the combined tax savings with you — typically 50/50. After paying the seller their share and covering additional CEMA-specific legal and banking fees (typically $1,000 to $2,000 total), the buyer's net benefit still often lands between $3,000 and $7,000+ depending on the loan amounts involved.

What Makes a CEMA Possible (and What Can Block It)

A CEMA requires the cooperation of three parties beyond you and your attorney: the seller, the seller's current lender, and your new lender.

The seller needs to agree. They benefit (through the split savings), so they typically do — but they're also accepting the delay and administrative burden that comes with a CEMA. In a competitive market with multiple offers, a seller may decline if the CEMA process risks slowing the closing.

The seller's current lender must agree to assign their mortgage rather than receiving a full payoff. Not all lenders participate. Certain portfolio lenders and credit unions routinely decline CEMA requests. Large institutional lenders vary in their willingness and processing speed. Your attorney needs to identify whether the seller's lender is CEMA-cooperative early in the process.

Your new lender must be willing to accept the assigned mortgage and consolidate it. Again, not all lenders do this. If you're using a small community bank or a lender unfamiliar with New York transactions, CEMA may not be an option.

There is also a timing constraint. The CEMA process requires sourcing the original mortgage note from the seller's lender, obtaining current payoff figures, drafting assignment and consolidation documents, and coordinating across attorneys and lenders. This adds time to the closing — sometimes several weeks. In a transaction already navigating NYC's 60-to-90-day timeline, a CEMA can become a source of friction.

Running the Cost-Benefit Calculation

Before pursuing a CEMA, your attorney should model the net savings specific to your transaction:

1. Gross MRT savings = (MRT on full new loan amount) minus (MRT on gap amount only)
2. Seller's share = 50% of gross savings (by convention; negotiable in some transactions)
3. CEMA fees = attorney CEMA charges + lender CEMA processing fees (typically $1,000–$2,000)
4. Net buyer benefit = Gross savings − Seller's share − CEMA fees

If the net benefit is under $2,000, the administrative friction and closing delay may not be worth it. If the net benefit is $5,000 or more — common on loans above $700,000 with a seller who carries a substantial existing mortgage — the CEMA is almost always worth pursuing.

The seller's outstanding balance matters a great deal. A seller who owns their home outright (no mortgage) cannot facilitate a CEMA because there is no existing mortgage to assign. The seller must have an existing mortgage balance for the mechanism to function.

CEMA vs. Co-op: Why This Only Applies to Real Property

If you're looking at co-ops — which make up roughly 70% of NYC's for-sale apartment inventory — a CEMA is not relevant. Co-op share loans are not recorded mortgages, so there is no MRT in the first place. The co-op exemption from MRT is already built in. The CEMA strategy only matters for buyers financing the purchase of condominiums, townhouses, or single-family homes where a mortgage is recorded against a deed.

How to Start a CEMA Conversation

You need a real estate attorney who routinely handles New York City transactions — someone who has executed CEMAs before and knows which lenders are cooperative. This is not the transaction to use a generalist or an out-of-state attorney who dabbles in New York deals.

Raise the CEMA question with your attorney before going into contract. They need to:

• Identify the seller's lender and assess CEMA participation likelihood
• Confirm your lender will accept an assigned mortgage
• Add appropriate CEMA-related language to the purchase contract
• Allow for the additional timeline associated with CEMA processing

The earlier the conversation starts, the more likely it is to close without derailing the deal timeline.

For a full breakdown of NYC's closing cost structure — including the Mortgage Recording Tax, mansion tax, transfer taxes, title insurance, and what to expect at a sponsor sale — see the New York First-Time Home Buyer Guide.

See more New York guides →