Why do Two Similar Homes Have Completely Different Property Taxes?

If you’ve been comparing homes, you may have noticed something confusing: Two houses that look nearly identical, have very different property tax bills.

It’s a common surprise for buyers, and the reasons aren’t always obvious from the listing. Property taxes can vary widely even between homes in the same area, similar price range, or identical floor plan. Here’s why.

1. Assessed Value is not Market Value

Property taxes are based on the assessed value, not what the home would sell for today.

This means:

• One home was reassessed recently = higher taxes

• Another hasn’t been reassessed in years = lower taxes

• Counties don’t update values equally or consistently

A recent sale almost always triggers a higher taxable value.

2. Long‑Time Owners Often Pay Less

Many states limit how much a home’s taxable value can increase each year.

So:

• Someone who bought in 2012 might pay way less

• Someone buying today pays taxes based on today’s value

3. Primary Residence vs. Investment Property

This does make a difference.

Primary homes often get:

• Homestead exemptions

• Tax reductions

• Caps on annual increases

Second homes or rentals:

• Do not get these benefits

• And can be taxed at a higher rate

4. Different Taxing Districts

Even nearby homes can fall into different:

• School districts

• City vs. county tax zones

• Special assessment districts

• Mello‑Roos / CFD zones

These add-ons can increase property taxes by hundreds or thousands per year.

5. Renovations or Additions Trigger Reassessment

If one home has:

• A remodel

• Added square footage

• A pool, ADU, or guest house

…it may have been reassessed at a higher value.

6. Administrative Differences & Errors

Not everything is intentional. Taxes can differ because of:

• Incorrect square footage on file

• Missed exemptions

• Delayed county updates

• Previous owner tax appeals

Small clerical differences can create big tax variations.

Bottom Line

When comparing homes, remember:

The seller’s tax bill is NOT what you’ll pay.

Your taxes will depend on:

• The county’s reassessment at your purchase price

• Whether it will be your primary residence

• Any special districts attached to the home

• How recently it was sold or upgraded

"Why do Two Similar Homes Have Completely Different Property Taxes?" is brought to you by EHG Mortgage. Contact us today for help with estimating your total montly payment on your new home.