Difference in conditions policies to pair with a FAIR plan

A difference in conditions (DIC) policy is a second policy that pays for what a FAIR plan policy does not: typically water damage, theft, personal liability and sometimes loss of use. You buy it alongside the plan policy, not instead of it, and together the two are meant to approximate one HO-3. The pairing works well when the two policies are chosen to fit each other. It fails when they overlap, leave a gap between them, or fail to satisfy your lender.

Why the pairing exists

A FAIR plan is a residual market pool that sells property insurance to owners the regular market has declined. Its core product is often a basic fire policy. Insurers in the pool share the losses, and the plan's job is to keep a home insured against the peril that destroys it, not to match what a homeowners package offers.

California is the clearest case. The California Department of Insurance describes the California FAIR Plan's residential product as a "limited fire policy" and says a comprehensive option covering water damage, liability, theft and additional living expenses is in progress, which would remove the need to buy a separate DIC policy. Legislation announced in February 2026 (AB 1680) includes a more comprehensive homeowners option and was signed into law, according to the department's September 30, 2026 release. Until a plan offers that product and you buy it, a California owner on the plan who wants a full package builds one from two pieces. See The California FAIR Plan explained for the plan itself.

Other states differ, and you should not assume the California pattern applies:

• Florida: Citizens Property Insurance Corporation writes a fuller multiperil homeowners policy, so most Citizens policyholders do not need a DIC policy. Flood is still separate.
• Texas: TWIA writes wind and hail only along the coast, and the Texas FAIR Plan writes the other perils. Coastal owners often carry both, plus flood. See Texas FAIR Plan and Texas Windstorm Insurance Association.
• Wind-only pools elsewhere: a beach or windstorm pool covers wind and hail, and you buy a separate policy that excludes wind for everything else. That is a related arrangement but not a DIC policy in the strict sense.

The state's FAIR plan website and the home insurance rules by state tell you what your plan writes. Read the plan's own policy forms rather than a summary.

What a DIC policy does and does not do

The name describes the idea: it pays the difference between the primary policy and the coverage you need. The forms are not standardized the way an ISO HO-3 is, so two DIC policies can differ a great deal. In general:

• Perils. Many DIC forms cover on an open perils basis and then exclude fire, because the plan covers it. A plan policy, by contrast, covers named perils only: fire and lightning, with optional endorsements for wind, hail, smoke and similar causes. Ask whether the DIC form excludes fire outright or excludes only what the plan "actually pays," because those wordings behave differently after a loss.
• Liability. A plan fire policy usually does not include personal liability. Most DIC homeowners products add it at a limit you choose. Confirm the limit and whether medical payments to others is included.
• Personal property and loss of use. A basic plan form may insure the structure with little or no contents coverage unless you add it. A DIC policy can cover belongings and additional living expenses, subject to its own limits.
• Not flood or earthquake. Neither a plan nor a typical DIC policy covers flood or earth movement. Those need NFIP, private flood, or earthquake coverage.

Where the pairing goes wrong

The failures are specific and predictable. Check each before you bind.

1. Mixed-cause losses. A kitchen fire is the plan's. A burst pipe is the DIC policy's. A burst pipe that starts a fire, or a wildfire that is followed by water from a broken line, can start an argument between two insurers about who pays for what. Ask each company in writing how it handles a loss with more than one cause.
2. Overlapping coverage you pay twice for. If both policies cover wind or smoke, you may pay premium for both and collect from one. Compare the plan's endorsements with the DIC form's perils before you add either.
3. Deductibles stack. Two policies means two deductibles. A single event that touches both can cost you both.
4. Dwelling limit mismatch. The plan's limit sets the ceiling for the structure. The DIC policy may have its own dwelling limit, or may rely on the plan's. If your rebuilding cost is above the plan's limit, a DIC policy may not make up the difference unless it says so. Run your numbers in the How much homeowners insurance do I need?.
5. Different claim processes. You will have two adjusters, two sets of deadlines and two proof-of-loss requirements. Keep one file with both policy numbers and notice requirements.
6. Lender requirements. Your mortgage servicer wants evidence of coverage for the dwelling and a named mortgagee. A split package can generate confusion at renewal, and some servicers push back if the plan policy alone looks inadequate. Send them both declarations pages and ask for written confirmation that the combination satisfies the loan. Fannie Mae's guide accepts plan coverage when it is the only coverage obtainable, as discussed in finding coverage for a hard-to-insure home.
7. Who stands behind the second policy. Many DIC policies are written by surplus lines insurers, and in most states surplus lines policies are not protected by the state guaranty fund if the insurer fails. Some DIC products come from admitted insurers. Ask which paper yours is on; the distinction is explained in admitted vs surplus lines home insurers: what you give up.

A hypothetical pairing

Say you own a house whose rebuilding cost is $600,000, and a standard insurer has nonrenewed it for wildfire exposure. Your state's FAIR plan will insure the structure for fire at a $600,000 dwelling limit with a $2,500 deductible. The plan will not cover theft, a plumbing failure or a guest's injury. You add a DIC policy with open perils excluding fire, $300,000 liability, a $5,000 water deductible, and contents coverage of $100,000.

Now run three losses. A lightning fire is the plan's claim, subject to the $2,500 deductible. A frozen pipe floods the kitchen and the DIC policy pays after its $5,000 deductible. A smoldering electrical fire in a wall with water from the response is a mixed loss, and the answer depends on the wording of the two policies, which is why you asked about it beforehand. The numbers are invented to show how the pieces fit, not to describe any real quote.

How to shop for one

1. Start with the plan quote and read its forms, endorsements and declined perils.
2. Ask an independent agent or surplus lines broker for DIC quotes designed to pair with that plan. Agents who work with a plan every day know which DIC products people actually use. See surplus lines home insurance when standard carriers say no and captive agents, independent agents and direct insurers.
3. Line the policies up in the homeowners quote comparison worksheet: perils, deductibles, limits, exclusions, and how each treats the other.
4. Get the interaction in writing. Ask the DIC carrier to confirm how it treats losses the plan also covers.
5. Plan the exit. Both a plan and a DIC policy are usually a bridge. Ask your agent to requote the standard market each year; see when your home seems uninsurable.

Key takeaways

• A DIC policy fills the gaps in a FAIR plan policy, usually water, theft, liability and contents. It is bought in addition to the plan policy.
• Not every plan needs one: Florida's Citizens writes a fuller policy, while California's FAIR Plan sells what the state describes as a limited fire policy, and a comprehensive option is still being developed.
• Mixed-cause losses, stacked deductibles and mismatched dwelling limits are where pairings fail, so ask both insurers how they treat each other in writing.
• Find out whether the DIC insurer is admitted or surplus lines, because a guaranty fund may not back it.
• Send both declarations pages to your lender and treat the combination as a bridge back to the standard market.