Co-op apartment insurance

A co-op shareholder insures what the cooperative corporation does not: the improvements inside the apartment, personal belongings, liability, living expenses after a loss, and a share of any assessment. The usual product is an HO-6 unit-owners policy, sometimes sold as a "co-op" or tenants-and-cooperative policy, and the dividing line between your coverage and the corporation's is set by your proprietary lease and the building's rules. Read those first, and then buy to fit them.

What owning a co-op means for insurance

In a condominium you own real estate. In a co-op you own shares in the corporation that owns the building, and a proprietary lease gives you the right to occupy your apartment. FEMA's flood manual describes the difference this way: residents of cooperative buildings "buy shares of the corporation, rather than the real estate" (FEMA, Flood Insurance Manual, April 2021, section 2). The corporation holds the building, usually carries an underlying mortgage, collects maintenance charges from shareholders to pay it, and buys the building's insurance as a corporate expense.

That structure explains where coverage lives. The corporation's policy insures the building and common areas, and its general liability policy covers claims arising there. Your policy covers everything the lease makes yours. The New York Department of Financial Services' consumer guide describes the policies as available "for tenants, cooperative, and condominium owners," with a policy for the contents and liability of a unit, and the condo owner's policy covering alterations, appliances, fixtures and improvements (DFS). Co-ops are most common in New York, but they exist in many cities, and the rules below do not change by state.

The ISO HO-6 form (HO 00 06 05 11) has wording that reaches co-ops. Its Coverage A insures the alterations, appliances, fixtures and improvements that are part of the building within your unit, and, in the form's words, "property which is your insurance responsibility under a corporation or association of property owners agreement." That wording is how a co-op lease reaches your policy. The NAIC's annual report on these forms is titled for "Condominium/Cooperative Unit Owner's Insurance," and its 2023 data (published July 2026) put the countrywide average HO-6 premium at $658 (NAIC). That is an average across condos and co-ops of all sizes, not a quote.

Where your responsibility starts

Three arrangements are common, and the names vary from building to building.

• Bare walls. The corporation insures the shell: bare walls, floor and ceiling. You insure everything inside, including finishes, cabinets and fixtures. Triple-I notes that in some buildings "the association is responsible only for insuring the bare walls, floor and ceiling" (Triple-I).
• Original finishes. The corporation insures the apartment as originally built, with standard fixtures and finishes. You insure upgrades, called improvements and betterments.
• All-in. The corporation insures nearly everything, including finishes, and you insure belongings, liability and any custom work the lease excludes.

These parallel the master policy categories described in condo master policies: what the association covers and what you cover; the terms bare walls coverage, walls-in coverage and all-in coverage mean roughly the same things here. The proprietary lease, house rules and any alteration agreement govern. If the language is unclear, ask the managing agent for the insurance section of the lease and a certificate of insurance for the building's master policy, and ask your broker to read both before you choose limits.

What your policy covers

An HO-6 or co-op policy has five working parts.

1. Improvements and betterments (Coverage A). Kitchens, baths, flooring, built-ins and fixtures you paid for or inherited from prior owners. Size this to what it would cost to rebuild them, not what you paid.
2. Personal property (Coverage C). Furniture, clothing and electronics, usually on named perils, with the standard dollar caps on money, jewelry theft and similar items. See Personal property coverage (Coverage C) explained.
3. Loss of use (Coverage D). Living expenses while the apartment is unfit to live in. Repairs in a multi-unit building can take months.
4. Liability and medical payments (Coverages E and F). Your personal liability covers claims that a guest, a contractor or a neighbor makes against you, including damage you cause to other units. Many co-op boards set minimum liability limits, and some require the corporation and managing agent to be named on the policy as additional interest parties, so check the lease. how much liability coverage should a homeowner carry? helps with the number.
5. Loss assessment. The ISO standard is $1,000. In a co-op, assessments follow from losses that exceed the corporation's insurance or fall into its deductible. See below.

If you have the cheaper tenants form (HO-4) because you were told co-ops are "like renting," you have no Coverage A. The ISO HO-4 (HO 00 04 05 11) does include a Building Additions And Alterations allowance, but it is capped at 10% of the contents limit. HO-4 renters insurance explained: coverage, limits and common gaps explains what that form leaves out. Ask whether your policy covers improvements and betterments, in those words.

A hypothetical loss

Say you spent $90,000 renovating a kitchen and bath, and the lease puts improvements on you. A burst pipe in the unit above ruins both rooms and spoils furniture. Your policy pays for the rebuild of the kitchen and bath up to your Coverage A limit and for the furniture under Coverage C, less your deductible. The corporation's policy pays for the shell. If the leak came from a neighbor's negligence, your insurer may seek to recover from them or from their insurer. If your Coverage A limit were $25,000 because the agent assumed the corporation owned the renovation, you would be absorbing $65,000.

Assessments and the building's deductible

Corporations carry deductibles, sometimes large, and they fund them from reserves or by assessing shareholders. A fire in the boiler room, a damaged roof or a liability judgment above the building's limit can all produce an assessment. Loss assessment coverage reimburses your share of an assessment arising from a covered loss, with the same exclusions as the rest of the policy: it does not pay for deferred maintenance, capital projects or higher maintenance charges. Loss assessment coverage for HOA and condo owners covers limits and how to raise them. Ask the managing agent for the building's deductible so you can compare it to your limit.

For loans that Fannie Mae buys, the guide's master policy rules apply to co-op projects as well as condos and planned developments: master coverage must reach the estimated replacement cost value of the project improvements, and the master deductible is capped at 5% of the master coverage amount per occurrence and at $50,000 per unit where a per-unit deductible applies. If the master policy leaves part of the unit's interior or improvements uncovered, or has a per-unit deductible, the borrower needs a unit-owner policy with a deductible no higher than the greater of 5% of the coverage amount or $2,500 (Fannie Mae B7-3-03 and B7-3-04, versions of August 5, 2026). A share loan from a lender with other rules may ask for more. what mortgage lenders require from your homeowners policy explains the lender side.

Flood insurance in a co-op

Flood is a gap worth checking. According to FEMA's April 2021 Flood Insurance Manual, the National Flood Insurance Program "does not provide building coverage for shareholder units in a cooperative building." Shareholders can buy contents coverage under the Dwelling Form, and may apply 10% of the contents coverage to betterments and improvements at the time of loss. The manual also says cooperative buildings are not eligible for the condominium building association policy, so the corporation buys building coverage on a different NFIP form. FEMA's October 2025 manual lists a $100,000 contents maximum, with no building coverage, for residential units other than condominium units. FEMA revises the manual, so check the current edition. NFIP flood insurance explained explains the program, and does homeowners insurance cover flooding? explains why your policy excludes it. Ask the board whether the corporation carries flood coverage on the building and at what limit.

Steps to set up coverage

1. Get the proprietary lease, house rules and any alteration agreement, and find the insurance article.
2. Get the building's master policy certificate, with limits and deductibles.
3. List the improvements in your unit that the lease makes yours, and price rebuilding them. A contractor or a insuring a home during a renovation checklist helps.
4. Ask your broker for an HO-6 or co-op form, with Coverage A sized to step 3, Coverage C to your belongings, and liability at or above the lease minimum.
5. Add loss assessment above $1,000 if the building's deductible justifies it.
6. Provide the certificate the corporation and the lender require, naming them as required.
7. Review limits every year and after any renovation.

Key takeaways

• A co-op shareholder owns shares and a lease, not real estate. The corporation insures the building; you insure your improvements, belongings, liability and loss of use.
• The HO-6 form covers property that is your insurance responsibility under a corporation agreement, so the proprietary lease determines your Coverage A limit.
• A tenants form (HO-4) may leave your renovations uncovered. Ask whether improvements and betterments are included.
• Flood insurance for shareholders is contents-only under the NFIP, so ask whether the corporation insures the building against flood.
• Loss assessment defaults to $1,000 in the ISO form; compare it to the building's deductible and consider raising it.