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Farmhouses and capes along a country road near the Mattituck creeks on the North Fork in Mattituck, NY, Town of Southold, Suffolk County
Foreclosure Defense · Suffolk County

Foreclosure Defense Attorney in Mattituck, NY (Served with Papers? Start Here)

By Thomas A. Sirianni, Esq.
New York Bar 1999 (Bar No. 2954154), Touro Law Center J.D., 27 Years of Practice on Long Island
Updated September 8, 2026
Quick Answer

Mattituck homeowners served with a foreclosure summons have 20 days to answer if it was handed to them and 30 days otherwise, and the case is heard in Suffolk County Supreme Court in Riverhead, about 20 minutes west. North Fork property in Mattituck is often held by several family members at once: siblings who inherited a parent's house, or a parent and child on one deed. When one co-owner's mortgage defaults, the others' interests are at stake, and partition law meets foreclosure law. I handle both.

Key Takeaways

  • Mattituck is in the Town of Southold; foreclosures on Mattituck property are filed in Suffolk County Supreme Court in Riverhead.
  • A mortgage signed by one co-owner encumbers only that co-owner's undivided share; the lender can foreclose that share but not the interests of co-owners who never signed.
  • A co-owner who did not sign the mortgage should still answer if named, to protect their interest, and cannot be held for the debt or any RPAPL 1371 deficiency.
  • Co-owners can settle a defaulting relative's mortgage by buying out the share, refinancing jointly, or agreeing to sell the whole Mattituck property with the lender paid from the defaulting owner's proceeds.
  • Where co-owners cannot agree, a partition action under RPAPL Article 9 in the same Riverhead court forces a sale or division, and the mortgage is paid from the mortgagor's share.
  • The 20 or 30 day answer deadline preserves standing, RPAPL 1304, RPAPL 1306 and CPLR 213(4) defenses for the borrower and the co-owners' interests for everyone else.

One of my siblings mortgaged our inherited Mattituck house and defaulted. Can the bank take it?

Only their share. A mortgage signed by one tenant in common encumbers that co-owner's undivided interest in the Mattituck property, not the whole parcel, and a foreclosure in Riverhead sells only that interest. The buyer at the auction becomes your new co-owner. Co-owners who never signed are not liable for the debt and cannot lose their shares.

Mattituck's older houses and waterfront lots pass down through families, and the deed ends up in several names: three siblings after a parent's death, a parent and an adult child, cousins who inherited from a grandparent. New York treats them as tenants in common unless the deed says otherwise, each owning an undivided fractional share of the whole. When one of them borrows against the property, the lender can take a mortgage only on what that borrower owns, and a careful lender will refuse the loan or require every co-owner to sign. Less careful lenders, and home equity lenders in particular, have made loans against a single co-owner's share, and when the loan defaults the foreclosure is limited to that share.

The practical consequences are real. The lender sues the borrowing co-owner and names the others as defendants with an interest in the property, and if the case proceeds to auction the referee sells the borrower's undivided share. The buyer, often the lender itself, becomes a tenant in common with the family, with the right to use the property and the right to bring a partition action to force its sale. The non-borrowing co-owners are not liable for the debt, cannot be pursued for a deficiency under RPAPL 1371, and keep their shares, but they now co-own a Mattituck house with a stranger who wants to be bought out or wants the property sold. That is why the family's interests are better served by resolving the defaulting co-owner's mortgage before the auction, not after.

How does the family resolve one co-owner's default without losing the property?

Several ways. The other co-owners can buy out the defaulting sibling's share for the payoff and take title free of the lien, refinance the Mattituck property jointly, sell the whole property with the lender paid from the borrower's share, or, if agreement fails, bring a partition action under RPAPL Article 9 in Riverhead so the court orders a sale.

The family that acts together holds the leverage, because the lender would far rather be paid than own a fractional interest in a Mattituck house it cannot sell without a partition action of its own. A buyout is the cleanest resolution: the non-borrowing co-owners pay the lender the payoff, or pay the borrower's share value less the payoff, and take a deed to the borrower's interest free of the mortgage. Where the family wants to keep the house but cannot fund a buyout, a joint refinance in all the co-owners' names pays off the defaulted loan and replaces it with one the family carries together. Where the family is ready to sell, the whole property goes on the market, the lender is paid from the borrowing co-owner's share of the proceeds at closing, and every co-owner receives their fractional share of the rest.

Where the co-owners cannot agree, partition is the remedy. Any tenant in common may bring an action under RPAPL Article 9 in the same Riverhead court, and the court will order the property sold, or divided where division is practical, with the proceeds allocated by ownership share and with the mortgage charged against the borrowing owner's share alone. Partition can be combined with the foreclosure defense so the family controls the sale rather than a referee at auction. Adjustments for taxes, insurance and repairs paid by one co-owner and not others are made in the accounting. I handle partition actions as part of my practice, and in Mattituck co-owner cases the two proceedings are often the same negotiation.

Where are Mattituck foreclosure cases heard?

Mattituck foreclosures are heard in Suffolk County Supreme Court in Riverhead, about 20 minutes west on Route 25. Southold Town Hall has no role. CPLR 3408 settlement conferences run before court attorney referees in the Riverhead foreclosure part, the assigned justice decides motions, and any partition action among the co-owners is brought in the same courthouse.

The Riverhead courthouse hears both halves of a Mattituck co-owner case, the lender's foreclosure of one share and the family's partition or buyout dispute, and I have appeared there on both since 1999. The foreclosure part's court attorney referees understand fractional-interest foreclosures and will not let a lender treat non-signing co-owners as borrowers, and the assigned justices are experienced with partition, which is a routine proceeding on the East End where inherited waterfront property is common.

Where the borrowing co-owner occupies the Mattituck house, the CPLR 3408 conference applies to the foreclosure, and the referee supervises negotiation over a modification of that owner's loan, a buyout by the family, or a sale. The non-borrowing co-owners appear to protect their interests and are heard. The assigned justice decides the ordinary defenses, standing, RPAPL 1304, CPLR 213(4), and the amount, and also decides what interest the mortgage actually encumbers, which on older Mattituck deeds with unclear survivorship language is sometimes contested. A contested case runs two to four years from the summons to an auction, enough time for a family to resolve the default or complete a partition sale on its own terms. An unanswered case reaches auction in about a year, and the family finds a stranger on the deed.

Did the lender comply with RPAPL 1304 and 1306, and who was entitled to notice?

The lender had to mail each borrower on the Mattituck loan a separate RPAPL 1304 90-day notice by certified and first-class mail with a Suffolk County counselor list, and file under RPAPL 1306 within three business days, if the property is the borrower's principal dwelling. Non-signing co-owners get no notice but must be named and served.

The Second Department requires strict compliance with RPAPL 1304 and puts the burden on the plaintiff to prove the mailing to each borrower through a witness with personal knowledge of it or of a standard practice the witness actually follows. Where the borrowing co-owner lives elsewhere and the Mattituck house is a family property used seasonally, the lender may argue the statute does not apply, and the occupancy facts decide it. Where it applies, the usual defects are available: two borrowers in one envelope, added collection language, a wrong-county counselor list, or a form affidavit.

RPAPL 1306 requires a state filing within three business days of the notice, and the Mattituck plaintiff must prove it with the confirmation. Where the statutes fail, the case is dismissed without prejudice and the lender must restart, and on a loan first accelerated in an earlier action that was abandoned the restart may not fit inside the six years CPLR 213(4) allows, with the Foreclosure Abuse Prevention Act, effective December 30, 2022, preventing the lender from claiming the acceleration was revoked. The non-borrowing co-owners have a different procedural right: they must be named as defendants and properly served under CPLR 308, and a foreclosure that omits a co-owner does not affect that co-owner's interest at all. I check the caption against the deed on every Mattituck file.

Who has to answer, and what does each co-owner plead?

Every named defendant has 20 days to answer after personal delivery or 30 after other service, substituted service complete ten days after the affidavit is filed in Riverhead. The borrowing co-owner pleads standing, CPLR 213(4), RPAPL 1304 and 1306 and the amount. Non-borrowing Mattituck co-owners plead ownership and that the lien reaches only the borrower's share.

Non-borrowing co-owners sometimes assume that because they owe nothing they need do nothing, and a default against them in the foreclosure can cloud what the referee's deed conveys and complicate a later partition. Each co-owner should answer. The borrowing co-owner's answer raises standing first or it is waived, pleads the statute of limitations, asserts the notice conditions precedent, and denies the amount claimed. The other co-owners' answers assert their undivided interests, deny any liability on the note, plead that the mortgage encumbers only the borrower's share, and, where appropriate, assert a counterclaim or cross-claim for partition so the court can resolve the whole property in one proceeding.

Co-owners frequently retain separate counsel, because their interests diverge: the borrower wants to keep the house or minimize the deficiency, and the others want their shares protected and the stranger kept off the deed. I represent one side of that divide and say so at the outset. Nothing said to the lender by any co-owner extends another's deadline; a written stipulation from the plaintiff's attorney does, and I obtain one when the family needs time to decide among buyout, refinance, sale and partition. A defended case gives the family two to four years to make that decision; a defaulted one gives about a year.

What are the family's options for the Mattituck property?

Until a referee delivers a deed after an auction, the borrowing co-owner can reinstate or modify through CPLR 3408, the family can buy out that share or refinance jointly, the whole Mattituck property can be sold with the lender paid from the borrower's proceeds, or partition can force a sale. Only the borrower faces RPAPL 1371 deficiency exposure.

The family's leverage comes from the lender's weak position: a fractional interest in a Mattituck house is a poor asset, and lenders know it. That is why a buyout at or near the payoff, a joint refinance, or a family sale with the loan paid from the borrower's share are all achievable, and why a lender facing a defended case with an active partition claim will often accept a discounted payoff to be done. Where the borrowing co-owner wants to stay and can carry the payment, a modification of their loan through the Riverhead conferences ends the case without changing anyone's ownership.

The auction is the outcome that damages every co-owner: the borrower's share sells at a discount, any surplus on that share goes to the Suffolk County Treasurer until an RPAPL 1361 claim is filed, the borrower faces an RPAPL 1371 deficiency motion within 90 days of the deed, and the rest of the family acquires a co-owner they did not choose, who can bring partition against them. A short sale of the borrower's share is rarely practical; a short sale of the whole property, with the lender waiving the deficiency in writing, sometimes is. Inherited property on the North Fork is usually the family's largest shared asset, and the foreclosure of one member's share is a family problem that the family, acting together and in time, can solve on its own terms.

How a foreclosure moves through Suffolk County Supreme Court

  1. One co-owner's default

    The borrowing co-owner falls behind on a loan secured by their undivided share of the Mattituck property. If the house is their principal dwelling, the servicer must mail the RPAPL 1304 notice and file under RPAPL 1306; federal rules bar suit until more than 120 days of delinquency. The family should meet now, before the summons.

  2. Summons naming every co-owner

    The lender files in Suffolk County Supreme Court, records a notice of pendency against the Mattituck property, and must name and serve the borrower and every co-owner with an interest. Each has 20 days to answer after hand delivery or 30 days otherwise; a co-owner not named is not affected.

  3. CPLR 3408 conferences and family negotiation

    About 60 days after proof of service, an owner-occupied home gets its first conference in Riverhead. The court attorney referee supervises the borrower's modification review while the family negotiates a buyout, joint refinance or sale; a partition claim can be asserted in the same action.

  4. Summary judgment, share and the RPAPL 1321 referee

    With no settlement, the lender's next step in the Mattituck case is summary judgment and an order of reference. The assigned justice decides standing, notice and limitations defenses and what interest the mortgage encumbers; the referee computes the debt against the borrower's share.

  5. Judgment of foreclosure and sale of the share

    The court confirms the referee's computation and signs the Mattituck judgment; the lender then publishes the sale. A buyout, joint refinance, family sale of the whole property, or partition sale can still close before the auction and keep a stranger off the deed.

  6. Auction of the share and after

    The referee sells the borrowing co-owner's undivided interest and delivers a deed to the buyer, who becomes a tenant in common with the family. Surplus is claimed under RPAPL 1361, a deficiency requires an RPAPL 1371 motion within 90 days against the borrower alone, and the new co-owner may seek partition.

Our Office
Thomas A. Sirianni, Esq.
1 Pine Valley Road, Upper Brookville, NY (Nassau County)
(516) 314-1343
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Frequently Asked Questions

My brother mortgaged the Mattituck house we inherited together without telling me. Can the bank take my share?

No. A mortgage signed by one co-owner encumbers only that co-owner's undivided interest. The lender can foreclose your brother's share and the buyer becomes your co-owner, but your share is not at risk and you owe nothing on the debt. You should still answer the complaint to protect your interest.

What happens if the bank buys my sibling's share at the auction?

The bank or the winning bidder becomes a tenant in common with you, entitled to use the property and to bring a partition action forcing its sale. That is why the family is usually better served buying out the defaulting sibling's share or selling the whole property before the auction, with the lender paid from that sibling's proceeds.

How long does a Mattituck foreclosure take?

The typical defended Mattituck case takes two to four years from summons to auction, moving through the CPLR 3408 conferences, summary judgment, the RPAPL 1321 order of reference and the judgment of foreclosure and sale. Cases with partition claims often take longer. When no one answers, a Mattituck home can be auctioned about a year after service.

Can the rest of the family force a sale of the whole property?

Yes. Any tenant in common may bring a partition action under RPAPL Article 9 in Riverhead, and the court will order a sale or division with proceeds allocated by ownership share, the mortgage charged against the borrowing co-owner's share, and adjustments for taxes and repairs one owner paid. It can be joined with the foreclosure so the family controls the sale.

Do I have to answer if I am not the borrower?

Yes, if you were named. Your answer asserts your ownership, your non-liability on the note, and the limit of the mortgage to the borrower's share, and it can include a partition claim. A default against a non-borrowing co-owner can cloud what the referee's deed conveys and complicate the family's options later.

Can we sell the Mattituck house while the foreclosure is pending?

Yes. Title stays with the co-owners until a referee's deed is delivered, and a sale of the whole property can close at any time before then, with the lender paid from the borrowing co-owner's share of the proceeds and each co-owner receiving their fractional share of the rest. It requires every co-owner's signature or a partition order.

Is the first consultation free for Mattituck co-owners?

Yes, for the borrower or for the other co-owners. Call (516) 314-1343 and bring the summons and complaint, the deed showing every owner, the will or estate papers that created the co-ownership, the mortgage, the 90-day notice and its envelope, and recent statements. I represent one side of the family in these cases, and I will tell you what each owner's exposure and options are.

Served with foreclosure papers in Mattituck? Call for a free consultation.

Suffolk County homeowners: I will review where your case actually sits, which deadlines are live, and which options are still open, at no cost for the initial consultation. I answer my own phone, 7 days a week, 6:00 AM to 8:00 PM.

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