Property taxes and homeowners insurance are the "TI" in the PITI breakdown from the first lesson — the two costs that ride inside the monthly payment without ever showing up as their own bill. Because they're handled quietly through escrow, most owners never look closely at how they're calculated, which is a shame, because they're also two of the costs most likely to rise. Understanding them is how a payment increase stops feeling like a mystery.
This lesson explains how each one works and why they change. It's educational only — not individualized tax, legal, or insurance advice.
How property taxes are assessed
A property tax is a yearly charge from your local government — usually funding schools, roads, police, fire, and libraries — based on the value of your home. The number comes from two pieces multiplied together: the assessed value of the property (an official estimate of what it's worth) and the tax rate (often called a mill rate or millage) set by local taxing bodies.
| Piece | What it is | Who sets it |
|---|---|---|
| Assessed value | The government's official estimate of your home's value | A county or city assessor |
| Tax rate (millage) | The percentage applied to assessed value | Local taxing authorities |
| Annual tax bill | Assessed value × tax rate | The combination of the two |
Property taxes tend to rise over time for two reasons that stack. First, assessed values climb as home prices in the area rise — your assessment gets updated, often every year or every few years. Second, tax rates can be raised when a school district or municipality needs more revenue. Either one pushes the bill up; both together can push it up fast in a hot market. This is the single most common reason an escrow payment jumps from one year to the next.
Two ways the tax bill can come down: exemptions and appeals
Property taxes feel fixed, but there are two legitimate levers many owners never use.
A homestead exemption reduces the taxable value of a home that's your primary residence — knocking a set amount or percentage off the assessed value before the rate is applied, which lowers the bill. Most states offer some version, and several offer additional reductions for older owners, veterans, or people with disabilities. The catch is that an exemption is often not automatic — it can require a one-time application — so it's worth checking whether your primary home is enrolled.
The second lever is an appeal. If an assessment looks too high — say it values the home well above what comparable nearby homes sold for — owners can usually challenge it through a formal process: gathering recent sales of similar homes ("comps"), checking the assessor's record for errors (wrong square footage, a bathroom that doesn't exist), and filing by a deadline. An appeal doesn't always succeed, but a genuinely inflated assessment is a real, repeatable cost, so correcting it pays off every year afterward.
What homeowners insurance covers — and what it doesn't
Homeowners insurance is the other half of "TI." A standard policy is really a bundle of protections, and the gaps in that bundle are where owners get the nastiest surprises. The single most important thing to know: a standard policy does not cover flood or earthquake — those are separate policies entirely.
| Situation | Typically covered? |
|---|---|
| Fire and smoke damage | Yes |
| Wind, hail, and most storms | Yes |
| Theft and vandalism | Yes |
| A visitor injured on your property (liability) | Yes |
| Burst pipe and sudden water damage | Usually yes |
| Flood from rising water | No — needs separate flood insurance |
| Earthquake damage | No — needs separate earthquake coverage |
| Normal wear, neglect, or lack of maintenance | No |
| Pest or termite damage | No |
That "no" column is the part to read twice. Flooding — one of the most common and destructive events — is specifically excluded from standard policies and requires its own coverage. The same goes for earthquakes in regions where they matter. And insurance never covers ordinary maintenance or wear, which loops back to why the maintenance sinking fund from the previous lesson exists: insurance is for sudden disasters, not for the roof simply getting old. The broader mechanics of property coverage are covered in auto, renters, and home insurance.
Replacement cost vs market value
One of the most misunderstood ideas in home insurance is how much coverage a home actually needs. Many owners assume it should match the price they paid or what the home would sell for today. But insurance is built around replacement cost — what it would take to rebuild the home from scratch — and that's a different number from market value.
Market value includes the land, the neighborhood, and what a buyer would pay. Replacement cost is purely the cost to rebuild the structure with current labor and materials. The two can diverge sharply: in a pricey city, market value may sit far above replacement cost because the land is what's expensive; after a spike in construction costs, replacement cost can climb even when market value is flat. Insuring to the wrong number — usually too little — is how owners discover a coverage gap only after a loss.
Taxes and insurance are largely outside any one owner's control, but they're not mysterious — and knowing how they move is what makes a payment increase explainable instead of alarming. The final lesson pulls taxes, insurance, and maintenance into a single homeowner's financial system.