Basic, Broad, and Special Form Insurance: Which Coverage Do You Need?

If you have ever looked closely at your homeowners insurance or commercial property insurance policy, you may have noticed references to a "cause of loss" form. This form determines exactly which perils — fires, storms, theft, and other damaging events — your policy will actually pay for. Understanding the difference between basic form insurance , broad form coverage , and special form property insurance is one of the most important steps you can take to make sure your property is truly protected.

There are three standard cause of loss forms used across the insurance industry: Basic (CP 10 10), Broad (CP 10 20), and Special (CP 10 30). Each one offers a different level of protection, and the one attached to your policy has a direct impact on whether a claim gets paid or denied. For Minnesota property owners dealing with everything from ice dams to spring flooding, choosing the right form matters more than most people realize.

Basic form insurance is the most limited of the three cause of loss forms. It operates on a named perils basis, meaning your policy only covers losses caused by perils specifically listed in the policy language. If the cause of your loss is not on the list, your claim will be denied — no exceptions.

Basic perils coverage typically includes the following named perils:

• Fire and lightning — Direct damage from flames or electrical strikes
• Explosion — Including gas leaks and boiler failures
• Windstorm or hail — Exterior damage from severe weather events
• Smoke — Sudden and accidental discharge of smoke
• Aircraft or vehicle damage — Objects striking your building
• Riot or civil commotion — Damage during civil disturbances
• Vandalism — Intentional damage by others to your property
• Sprinkler leakage — Accidental discharge from fire sprinkler systems
• Sinkhole collapse — Ground collapse beneath the structure
• Volcanic action — Eruption, lava flow, or airborne volcanic debris

That is a relatively short list. Notice what is not included: water damage from burst pipes, falling objects, the weight of ice and snow, or accidental discharge from appliances. These are everyday risks in Minnesota, and basic form insurance simply does not cover them. If a heavy snow load collapses part of your roof, a basic form policy would deny that claim.

Broad form coverage builds on the basic form by adding several more named perils to the list. It is still a named perils policy — meaning only the perils listed are covered — but the list is significantly longer and covers many of the gaps that make basic form insurance inadequate for most property owners.

In addition to everything covered under basic form, broad form perils add these protections:

• Falling objects — Trees, branches, or debris landing on your roof or structure
• Weight of snow, ice, or sleet — Structural damage from heavy winter accumulation
• Water damage — Accidental discharge or overflow from plumbing, heating, air conditioning, or appliances
• Collapse from specified causes — Building collapse due to hidden decay, insect damage, or weight of contents
• Glass breakage — Broken windows and glass fixtures from covered events

For Minnesota homeowners and business owners, these additions matter enormously. The weight of snow and ice is one of the most common causes of property damage in southern Minnesota. A broad form policy covers this. Water damage from frozen pipes that burst during a January cold snap is another frequent scenario — and again, broad form coverage protects you where basic form does not.

That said, broad form coverage still has limitations. Because it is a named perils form, any cause of loss not specifically listed remains excluded. Unusual or unexpected events — like a vehicle backing into your commercial building's HVAC unit or damage from an undiscovered roof leak — may or may not be covered depending on the exact policy language.

Special form property insurance takes a fundamentally different approach. Instead of listing the perils that are covered, a special form lists only the perils that are excluded. This is called open perils or all-risk coverage, and it means your property is protected against any special form cause of loss unless the policy specifically says otherwise.

This is a critical distinction. With special form insurance, the burden of proof shifts. Under basic or broad form, you must prove your loss was caused by a named peril. Under special form, the insurance company must prove the loss falls under a specific exclusion to deny your claim. That difference alone can determine whether a borderline claim gets paid.

Common exclusions under special form policies include:

• Flood and surface water — Requires a separate flood insurance policy
• Earthquake and earth movement — Typically excluded or available as an endorsement
• Wear and tear, gradual deterioration — Maintenance issues are not insurable events
• Mold, fungus, and wet rot — Usually excluded or severely limited
• Government action and war — Standard exclusions across all policy types
• Intentional loss — Damage you cause deliberately to your own property
• Power failure originating off-premises — Utility outages beyond your property

Everything else is covered. That includes unusual scenarios like a delivery truck crashing into your building, a tree falling through your office ceiling during a calm day, or damage from an animal getting inside your property. These are real claims that special form pays and basic or broad form may not.

When comparing insurance form types , seeing them side by side makes the differences clear. Here is how each form handles common causes of loss:

• Fire and lightning — Covered by basic, broad, and special form
• Windstorm and hail — Covered by basic, broad, and special form
• Theft — Not covered by basic; not covered by broad; covered by special form
• Falling objects — Not covered by basic; covered by broad and special form
• Weight of snow and ice — Not covered by basic; covered by broad and special form
• Water damage from burst pipes — Not covered by basic; covered by broad and special form
• Collapse from hidden decay — Not covered by basic; covered by broad and special form
• Vehicle striking the building — Covered by basic, broad, and special form
• Accidental damage from unknown cause — Not covered by basic or broad; covered by special form
• Flood and surface water — Not covered by any form (requires separate flood policy)

The biggest gap between broad vs special form is theft and the open perils structure. Broad form does not cover theft, and it does not cover causes of loss that are unusual or hard to identify. Special form covers both. For that reason, special form property insurance is the most popular choice for both homeowners and commercial property owners who want comprehensive protection.

For homeowners in Minnesota , special form coverage is almost always the recommended choice. Standard homeowners policies (HO-3) already include special form coverage on the dwelling itself, which means your home's structure is protected on an open perils basis. However, your personal belongings inside the home are typically covered on a broad form basis under an HO-3 policy. Upgrading to an HO-5 policy extends special form coverage to your personal property as well — a smart move if you own valuable electronics, jewelry, or collectibles.

For commercial property owners , the choice between basic vs special form has a direct financial impact on claims. Many commercial policies default to basic or broad form coverage to keep premiums lower. But the cost difference between broad and special form is often modest — sometimes just 10 to 15 percent more in premium — while the difference in claim outcomes can be tens of thousands of dollars. A commercial building in Mankato exposed to Minnesota winters should strongly consider special form coverage to protect against the full range of weather-related risks.

If you are a landlord, contractor, or small business owner, ask your agent specifically which cause of loss form is attached to your policy. Many business owners assume they have broader coverage than they actually do.

Minnesota's climate creates specific risks that make the choice between basic, broad, and special form especially important. Here are the key factors southern Minnesota property owners should keep in mind:

• Ice dams and roof damage — Minnesota's freeze-thaw cycles create ice dams that can force water under shingles and into your home. Special form policies typically cover this resulting water damage. Basic form does not.
• Weight of snow and ice — Heavy snow loads are a real structural threat in the Mankato area. Broad and special form cover collapse from snow weight; basic form does not.
• Frozen pipe bursts — When temperatures drop below zero for extended periods, pipes can freeze and burst. Broad and special form cover the resulting water damage, but you must maintain heat in the building to avoid a claim denial.
• Spring flooding — None of the three forms cover flood damage. If your property is near the Minnesota River, Blue Earth River, or any flood-prone area, you need a separate flood insurance policy. Do not assume your property policy handles this.
• Severe thunderstorms and tornadoes — Wind and hail damage is covered under all three forms, but special form provides the broadest protection for secondary damage that storms can cause, such as water intrusion through storm-damaged openings.

Understanding these regional risks is critical when evaluating whether your current coverage is adequate. A policy that works fine in a mild climate may leave significant gaps in a state like Minnesota.

Most property owners never look at which cause of loss form is attached to their policy until they file a claim — and by then it is too late to change it. Take a few minutes to check your current policy declarations page for the words "basic," "broad," or "special" near the cause of loss section. If you are unsure what you have, or if you suspect your coverage has gaps, now is the time to find out.

As an independent insurance agency in Mankato, Rehm Insurance and Financial Services works with multiple carriers to find the right coverage at the right price. We can compare policy forms across carriers and help you understand exactly what is and is not covered. Whether you need to upgrade from basic to special form or simply want a second opinion on your current policy, ask about your policy form type or give us a call at (507) 345-3366 . Protecting your Minnesota home or business starts with knowing what your policy actually covers.