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Unique Properties · 7 min read

Co-Op Financing: Why a Share Loan Isn't a Mortgage

By Pat Villano · August 6, 2026

Key takeaways

  • You are financing shares in a corporation plus a proprietary lease — not a deeded property — so the loan is a share loan, not a mortgage.
  • Far fewer lenders write co-op loans, and coverage is concentrated in the markets where co-ops are common.
  • The co-op board can reject you after your lender has already approved you, and it does not have to explain why.
  • Boards often impose stricter down payment and post-closing liquidity requirements than any lender would.

Co-ops confuse buyers because they look exactly like condos from the sidewalk and behave nothing like them on paper. When you buy a condo you receive a deed to real property. When you buy a co-op you receive stock in a corporation that owns the building, plus a proprietary lease entitling you to occupy a specific unit. Everything unusual about co-op financing follows from that one distinction.

Why it is called a share loan

Because there is no deed, there is nothing for a traditional mortgage to attach to. The lender instead takes a security interest in your shares and your proprietary lease, perfected under commercial law rather than recorded as a mortgage lien. In practice you will sign a recognition agreement — a three-way document between you, the lender, and the co-op corporation — under which the co-op agrees to notify the lender if you fall behind on maintenance and to respect the lender’s interest in the shares. Without a signed recognition agreement, most lenders will not close.

The lender list is short

Fannie Mae and Freddie Mac do buy co-op loans, but relatively few originators bother to build the operational capability, and coverage clusters in New York, New Jersey, Chicago, and a handful of other markets where co-ops have real market share. Elsewhere you are usually looking at a portfolio lender holding the loan on its own books. Expect a slightly higher rate than a comparable condo loan and a noticeably smaller field of options. If your loan size is large, this often lands in super jumbo territory, which narrows the list further.

The board is the second underwriter

  • Boards routinely require 20–50% down, and some prestigious buildings require all cash regardless of what a lender would allow.
  • Post-closing liquidity requirements are common — one to two years of combined mortgage and maintenance payments held in reserve.
  • Board packages ask for tax returns, reference letters, and a full financial statement, then an in-person interview.
  • A board can reject you without stating a reason, after your financing is fully approved.
  • Sublet restrictions are typically tight, which is why co-ops are rarely a fit for an investment strategy.

The underlying mortgage nobody mentions

The corporation itself usually carries a mortgage on the building, and your share of it is invisible in the purchase price. Ask for the underlying mortgage balance, its rate, and its maturity date. A building facing a large refinance in a higher-rate environment is facing a maintenance increase, and that lands on you. Also ask about the flip tax — a transfer fee some co-ops charge on sale, often 1–3%, which is genuinely material to your eventual return.

What to do first

Before you fall for a unit, get the building’s requirements: minimum down payment, liquidity standard, sublet policy, and whether financing is permitted at all. Then get pre-approved with a lender who actually writes share loans in that market — a pre-approval from a lender who does not will not survive the board package. Have your accountant look at the corporation’s financial statements, not just the unit’s numbers.

Send me the building and your down payment, and I will tell you whether financing is available there and what the board is likely to require on top of it.

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