More Detailed Information:
The HO1 policy is very limited in coverage and is not being sold by most companies.
The HO2 policy covers the basic perils of fire, lightning, explosion, smoke, hail, aircraft, riot, glass breakage, theft and damage caused by vehicles. It also adds additional coverage to broaden your policy. Those perils include damage caused by rupture of your water or heating pipes, falling objects (such as trees), collapse of the building, limit electrical damage to appliances and others.
The HO3 policy is, by far, the most commonly sold policy. It covers everything the HO2 policy covers and more. Instead of listing the perils that are covered these policies cover all damage to the building except what is excluded. The usual exclusions are: wear and tear, termites, rotting, collapse of septic tank, flood, war, earthquake and a few others.
Some HO3 policies are referred to as "Deluxe," "Special," "All Risk" policies depending upon the company.
Most policies cover your contents or belongings only for the perils named in an HO2 policy so wear and tear and normal breakage is not covered for your furniture and personal belongings.
Be careful! Your homeowner policy limits coverage on some items.
To keep the cost of insurance down your policy probably has limits on certain items. Typical limits are: Cash - $200, Jewelry - $1,000, Firearms - $2,500, Silverware - $2,500
Check your policy carefully. If you see you don't have enough coverage, find out how much it would cost to increase those limits or to buy special coverage.
Optional Coverage: In addition to special coverage for jewelry, silverware and furs, you can purchase specific coverage for such possessions as stamp or coin collections, fine arts, camera equipment, collectibles, watercraft and musical instruments, just to name a few.