Renters Insurance Glossary: HO-4, Liability, Replacement Cost and Every Other Term

This glossary covers the terms that come up when you shop for renters insurance in 2026, read a policy, or file a claim. Written for the renter who wants to know what they are actually buying, not the actuary writing the policy. Missing a term? Email hello@apartmentrentalinsurance.com.

The policy itself

HO-4

The standard renters insurance policy form. Every carrier on ApartmentRentalInsurance.com sells the same HO-4 shell with slight variations. The number after HO tells you which policy type: HO-3 is homeowners, HO-4 is renters, HO-6 is condo owner.

Premium

What you pay per month or per year for the policy. National median for renters is about $15/mo or $180/yr in 2026. State, city, and building risk all move it.

Deductible

What you pay out of pocket before the insurance kicks in. Standard is $500 or $1,000. Raising your deductible from $500 to $1,000 usually cuts your premium 10 to 20%.

Endorsement (rider)

An add-on to the base policy that covers something not included by default. Common endorsements: scheduled jewelry, home business equipment, water backup, and identity theft.

Sublimit

A cap inside the main coverage limit for specific categories. Even if you have $30,000 in personal property coverage, your policy might only pay $1,500 for jewelry theft unless you schedule the items separately. Read the sublimits before you file.

What it covers

Personal property

Your stuff. Furniture, clothes, electronics, appliances, books, sports gear. Standard limits are $15,000 to $50,000. A rough rule: walk through your apartment mentally, price the replacement cost, and pick a limit 20% above that.

Liability coverage

If someone gets hurt in your apartment and sues, this pays their medical bills and your legal defense. Standard is $100,000, often free to bump to $300,000 or $500,000 for a few extra dollars per year. Bump it.

Medical payments to others

A smaller no-fault coverage for minor injuries, usually $1,000 to $5,000. Pays without a lawsuit if a guest cuts their hand or trips on your rug.

Additional living expenses (ALE) / loss of use

If a covered event (fire, burst pipe, smoke damage) makes your apartment unlivable, ALE pays for a hotel, meals, and extra costs while you are displaced. Typically 20 to 30% of your personal property limit.

Guest medical payments

Same as medical payments to others. Different carriers use different names on the declarations page.

What it does not cover (by default)

Flood

Water from outside the building rising into your unit. Never covered by renters insurance. If you are in a FEMA-designated flood zone, you need a separate NFIP policy or private flood coverage.

Earthquake

Also excluded by default. California, Oregon, Washington, and parts of Utah and Missouri renters should add an earthquake endorsement or buy a standalone earthquake policy.

Water backup / sewer backup

Water coming up through a floor drain or backing up from the municipal sewer. Not the same as a pipe bursting inside your walls (which is covered). Add the water backup endorsement for $30 to $60/yr if your building is older or on a slab.

Bed bug remediation

Not covered by standard renters insurance. It is a maintenance issue, not a covered peril. Some carriers offer it as an endorsement in specific states.

Roommate’s belongings

Every person on the lease needs their own policy unless the carrier explicitly allows named-co-insureds. Cheaper to each buy your own than to split one policy.

How claims work

Actual cash value (ACV)

The depreciated replacement price. A 5-year-old couch that cost $1,500 might have an ACV of $400. Always the cheaper coverage type; always the less useful one.

Replacement cost value (RCV)

What it costs to buy the same or comparable item new today. Always pick this. The premium difference is small and the payout difference is not.

Named perils vs open perils

Named perils covers only the specific risks listed in the policy (fire, theft, vandalism, wind, and a short list of others). Open perils (all-risk) covers anything not explicitly excluded. Most HO-4 renters policies are named-perils by default.

Proof of loss

The sworn statement you sign after a claim listing what you lost and what it was worth. This is why keeping a phone-camera home inventory in your cloud drive matters: it is your proof of loss when it counts.

CLUE report (Comprehensive Loss Underwriting Exchange)

The industry-wide database of insurance claims tied to you and your address. Insurers pull it during underwriting. A single small claim can raise your rate at renewal or on your next policy.

Non-renewal vs cancellation

Non-renewal means the insurer will not offer you a new policy at the end of the current term. Cancellation is mid-term termination and is rare (usually for fraud or non-payment). Non-renewal after a claim is what actually happens most of the time.

Shopping and switching

Insurance score

A credit-adjacent score insurers use to price policies. Higher score, lower premium. Not the same as your FICO but influenced by similar factors.

Bundling

Buying renters and auto insurance from the same carrier. The multi-policy discount is usually 10 to 15%. Almost always worth doing if your auto insurance is not already at the cheapest carrier for you.

Certificate of insurance (COI)

A one-page document proving you have an active policy. Landlords ask for it at lease signing. Every insurer can email one within a few minutes of the policy binding.

Additional insured

Adding your landlord to your policy as an additional insured, at their request. Free with most carriers. Common lease clause.

Landlord-preferred policy

A policy the landlord’s management company steers you toward, sometimes required, often overpriced. Federal law lets you buy renters insurance from any carrier that meets the lease’s minimum requirements. Comparison-shop on ApartmentRentalInsurance.com before you sign the one they hand you.

Special situations

Umbrella policy

Extra liability coverage that stacks on top of your renters and auto policies. $1 million of umbrella coverage typically costs $150 to $300/yr. Not needed for most renters, but useful if you have significant assets to protect.

Home business coverage

If you work from home and have business equipment or client visits, standard renters insurance either excludes it or caps it low. A business endorsement or a separate BOP (Business Owner’s Policy) closes the gap.

Pet liability

Some carriers exclude specific dog breeds from liability coverage. Others charge a surcharge. If you own a Rottweiler, Pit Bull, German Shepherd, or a few other listed breeds, ask before you assume you are covered.

Identity theft coverage

An endorsement that reimburses legal fees, lost wages, and case-management costs after ID theft. $20 to $40/yr on most policies. Modest coverage; the value is the case manager, not the reimbursement.

Scheduled personal property

Adding specific high-value items (engagement ring, camera gear, musical instrument) to the policy with their own appraised limits. Bypasses the sublimit. Worth doing for anything over $2,000 in a single item.

What to do with this

If you are shopping for renters insurance right now, the fastest path is the ZIP-code cost calculator. Enter your ZIP, get a real quote range in about 30 seconds, and see what the carriers in your state actually charge before you talk to an agent.

If you want to compare specific carriers side by side, Compare Renters Insurance lays out the coverage tiers, deductibles, endorsements, and discounts. Filter by state.

If your landlord just handed you a policy quote and asked you to sign it, do this first: run the same ZIP through the calculator above. In most markets the landlord-preferred policy is 30 to 50% higher than what you can buy directly.

Missing a term? Email hello@apartmentrentalinsurance.com. We add requested definitions in the monthly content update.