Special Assessment
A temporary extra charge a co-op or condo board levies on owners to pay for something the regular budget doesn't cover, usually a big repair. In a co-op it's typically split by shares and billed alongside maintenance.
Last updated: October 3, 2026Maintenance is the bill you plan for. A special assessment is the one you didn’t: an additional, temporary charge the board levies to pay for something outside the operating budget, most often a façade, roof, elevator, or heating-system job, sometimes to rebuild a thin reserve fund or pay down building debt. Condos levy them too, on top of common charges. Boards often prefer an assessment to a maintenance increase because it ends when the money is raised, while a maintenance increase tends to stick.
In a co-op, the rules for allocating an assessment are usually in the proprietary lease and sometimes the bylaws, and in almost every co-op it’s charged in proportion to share ownership: total assessment ÷ shares outstanding = a per-share charge, multiplied by your shares. The authority to levy one generally sits with the board under the building’s governing documents. Payment is typically spread in installments, commonly over 12 to 36 months, though a board can bill a lump sum when repairs are urgent and reserves are thin. Once it’s levied, your share isn’t negotiable.
For buyers, who pays an existing assessment is negotiable and gets written into the contract of sale. In a hot market the seller won’t budge; on a listing that’s been sitting, they might. An assessment announced after signing typically falls to the buyer for installments due on or after closing, which is why buyers’ attorneys read the board minutes and financial statements for hints of one before the contract is signed.
Worked example
Hypothetical: a co-op with 80,000 shares outstanding needs a $1,200,000 façade repair and assesses the full amount. That’s $1,200,000 ÷ 80,000 = $15 per share. An apartment with 450 shares owes 450 × $15 = $6,750. Spread over 24 monthly installments, that’s $281.25 a month on top of maintenance until it’s paid off. The Co-op Affordability Finder doesn’t model assessments directly, so to stress-test a purchase, add the monthly installment to the maintenance figure and see what it does to your max price; the co-op reserve requirements guide explains why boards care about the cushion you’d pay it from.