CEMA, explained.

A Consolidation, Extension and Modification Agreement is a recorded legal instrument that combines an existing recorded mortgage with a new mortgage from a new lender, with the consolidated whole then modified (in terms, rate, payment schedule, lender) to function as one loan.

The structure is statutorily blessed under NY Tax Law §253 and §255: when a borrower assigns an existing recorded mortgage to a new lender and the new lender takes assignment plus advances additional funds, mortgage recording tax is owed only on the net new indebtedness — the additional amount advanced over the assigned existing balance.

What it’s NOT

• Not an assumption. An assumption (buyer takes over the seller’s mortgage at the same rate and terms) is rarely available on residential loans because most mortgages contain due-on-sale clauses. CEMA modifies the loan to whatever terms the new lender offers — it’s functionally a refinance that preserves the recorded mortgage’s priority for tax purposes.
• Not a transfer of the seller’s mortgage obligation. The seller’s lender gets paid off at the closing table just like in a standard payoff — but the mortgage instrument itself isn’t discharged. It’s assigned to the new lender and consolidated with the new loan.

NY mortgage recording tax (buyer / borrower share) on condo and townhouse loans:

• Loans under $500K: 1.8%
• Loans at or above $500K: 1.925%

The borrower share is part of the total 2.05% / 2.175% MRT — the bank pays the additional 0.25%.

Co-ops don’t pay mortgage recording tax because the financing instrument is a stock-loan rather than a real-property mortgage. CEMA is therefore relevant only to condos, townhouses, and 1-3 family homes.

Worked example — $5M condo refinance

Starting position: $3.5M existing mortgage at 7%; you want to refi to a $3.5M loan at 6%.

Without CEMA: Pay off the $3.5M existing loan, originate a brand-new $3.5M loan. MRT due on the new $3.5M loan = $3.5M × 1.925% = $67,375.

With CEMA: Assign the existing $3.5M mortgage to the new lender. Consolidate + modify to new terms. Net new indebtedness = $0 (you’re not borrowing more than you owe). MRT due = $0.

Savings: $67,375.

Worked example — $5M condo purchase with seller mortgage

Starting position: Seller has a $2M existing mortgage on a $5M condo. Buyer plans to put $1.5M down and borrow $3.5M.

Without CEMA: Seller pays off the $2M existing loan with sale proceeds. Buyer originates a brand- new $3.5M loan. MRT = $3.5M × 1.925% = $67,375.

With CEMA: Buyer takes assignment of the seller’s existing $2M loan from the seller’s lender. New lender adds an additional $1.5M advance and consolidates the whole into one $3.5M loan at new terms. MRT due on net new indebtedness ($1.5M) = $1.5M × 1.925% = $28,875.

Savings: $38,500.

Roughly: existing mortgage balance × ~1.925% = your CEMA savings. For most HNW transactions involving a seller with a substantial recorded mortgage, the savings are real money.

The cleanest CEMA case. You have an existing mortgage with Bank A on your NYC condo or townhouse. You want to refi with Bank B for whatever reason — rate reduction, cash-out, loan-term change.

The standard (non-CEMA) refi posture

Bank B originates the new loan. Bank A receives a payoff wire at the closing table. Bank A files a satisfaction of the existing mortgage. Bank B records the new mortgage and pays MRT on the full new loan amount.

The CEMA posture

Bank B and Bank A coordinate an assignment instead of a payoff. Bank A assigns its existing recorded mortgage to Bank B; Bank B doesn’t file the old satisfaction. The Consolidation, Extension and Modification Agreement consolidates the assigned mortgage with any additional advance Bank B is making (zero on a no-cash-out refi; positive on a cash-out refi). MRT is owed only on the net new advance.

Cash-out vs no-cash-out

• No-cash-out refi ($3.5M existing → $3.5M new): zero MRT. CEMA saves the full $67K-ish on the refi.
• Cash-out refi ($3.5M existing → $4.5M new): MRT on the $1M cash-out. CEMA saves on the $3.5M preserved balance ($67K), but you still owe MRT on the incremental $1M.

The harder but higher-value CEMA. A buyer purchasing a property where the seller has a substantial recorded mortgage can structure the deal so the seller’s existing mortgage is assigned to the buyer’s new lender rather than paid off — saving MRT on the assigned balance.

Why this requires seller cooperation

In the standard transaction, the seller’s mortgage is paid off at closing and the seller has no further interest in it. In a purchase-side CEMA, the seller has to:

• Coordinate with their lender to authorize an assignment rather than a payoff
• Sign the Consolidation, Extension and Modification Agreement as the assignor of the existing mortgage
• Cooperate with the buyer’s lender’s processing timeline (CEMAs typically add 2-4 weeks to closing)
• Often receive nothing direct from the structure (the economic benefit accrues to the buyer)

The negotiating posture

Because the seller bears administrative friction without direct benefit, buyer-side CEMAs typically involve a split-the-savings negotiating posture: the buyer agrees to credit the seller a portion of the expected MRT savings (often 25-50%) as consideration for the seller’s cooperation. On the $5M purchase example above, a 33% credit would mean the buyer offers the seller an extra ~$12.8K of purchase price for cooperation; buyer’s net CEMA savings drops from $38.5K to $25.7K, still meaningfully positive.

The negotiating dynamic: brokers and attorneys who know about CEMA bring it up at LOI; buyers and sellers who don’t know about it leave the entire savings on the table.

Parties involved

• Existing lender (Bank A) — must agree to assign rather than discharge the existing mortgage. Most large lenders have a CEMA group that handles this routinely; smaller community banks may resist.
• New lender (Bank B) — must underwrite the new loan as a CEMA. Some lenders charge a CEMA processing fee ($500-$2,000); most don’t.
• Title company — handles the assignment recording mechanics. Critical that the title company has CEMA experience; mistakes cost money.
• Borrower’s attorney — coordinates document preparation and review. Specifically the CEMA document itself must be carefully drafted to satisfy NY Tax Law §255 requirements.
• NYC Register / NY State Department of Taxation — receives the CEMA and the assignment recording. The tax calculation must be reflected accurately on the recording — overpayment of MRT in a CEMA is mistakes-prone if the title company isn’t experienced.

Document flow

1. Borrower notifies new lender of CEMA intent at loan application
2. New lender requests CEMA package from existing lender (assignment of mortgage, allonge to the note, payoff amount with assignment language rather than satisfaction)
3. Existing lender produces assignment package (3-6 weeks typical)
4. Title company prepares the CEMA document combining assigned existing mortgage with new advance
5. At closing, the CEMA is signed; existing lender receives a wire equal to assigned balance; new lender advances the consolidated loan
6. CEMA + assignment of mortgage recorded with NYC Register; MRT calculated on net new advance only

Co-op purchases

Co-ops aren’t real property — the buyer receives shares and a proprietary lease, not a deed. There’s no underlying recorded mortgage to assign. CEMA is not applicable. (Conversely: co-ops never paid MRT in the first place, so the saving doesn’t exist to recapture.)

All-cash transactions

No new mortgage = no MRT = no savings to capture. If you had an existing mortgage and want to pay off (transitioning to all-cash), the existing loan satisfies at the closing table; no CEMA structure is available.

Seller’s lender refuses to assign

Some smaller community banks and some private/portfolio lenders will refuse to assign an existing mortgage, insisting on a payoff. Without the seller’s lender cooperation, no CEMA is possible. (Most large national lenders — Chase, Citi, BofA, Wells, HSBC — handle CEMAs routinely.)

Net new advance is large relative to existing mortgage

CEMA still works mathematically, but the savings shrink proportionally. On a $5M purchase with a $200K existing seller mortgage and $3.5M new loan, the CEMA saves MRT on only $200K — about $3,850 in MRT savings, probably not worth the 2-4 week processing delay.

Rule of thumb: CEMA usually makes sense when the existing mortgage exceeds 30-40% of the new loan. Below that, the savings don’t justify the friction.

Recently-originated existing mortgage

Some lenders require a seasoning period (typically 6-12 months) before they’ll assign a mortgage they recently originated. CEMA on a very recently-originated loan may not be possible regardless of other factors.

CEMA adds 2-4 weeks to closing. On a typical NYC condo purchase (60-90 day target), this is meaningful but manageable. On a NY co-op (already 90-120 days), it doesn’t apply. On a fast-moving cash-and-quick-close transaction, the CEMA processing window can be the binding constraint on the closing date.

Critical early steps

• Buyer’s lender CEMA intent letter to seller’s lender — first 2 weeks
• Seller’s lender CEMA package preparation — weeks 3-6
• Title company CEMA document drafting — weeks 4-6
• Recording at closing — closing day

Contract language

CEMA cooperation language should be in the purchase contract — without it, the seller has no contractual obligation to facilitate. Standard language is: “Buyer reserves the right to elect a Consolidation, Extension and Modification Agreement with respect to any existing mortgage(s) on the Property. Seller agrees to reasonably cooperate, including signing necessary documents and coordinating with the existing lender(s).”

Cooperation language alone isn’t enough at the negotiating tier — the buyer typically offers a small credit (% of MRT savings) as economic consideration for the seller’s administrative cooperation.

CEMA is the largest single line-item savings most NYC buyers and refinancing borrowers leave on the table. The reasons it gets missed:

1. Brokers rarely raise it. Buyer-side brokers focus on the deal terms; CEMA isn’t in the standard listing-broker playbook.
2. Attorneys assume the client knows. Experienced NY transactional attorneys know CEMA cold, but rarely volunteer it unless asked. The client has to know enough to bring it up.
3. Lenders aren’t incentivized. CEMA produces no economic benefit to the lender (they still record their mortgage, still charge their fees), but adds processing complexity. Most lenders won’t proactively offer it.
4. Title companies vary. A title company that does CEMAs regularly handles them cleanly; a title company that doesn’t may resist or charge premium fees that erode the savings.
5. Sellers don’t want the friction. Without a credit incentive in the contract, sellers often refuse to cooperate on the buyer-side CEMA because there’s no direct benefit to them.

The practical implication: bring CEMA up early. At LOI for a purchase, in the rate-shopping conversation for a refi. The savings are real and structurally available — they just require active pursuit.