The Lancaster County 2027 Reassessment Explained in Under 3 Minutes

If you’ve heard talk about the Lancaster County 2027 Reassessment, you’re not alone. It’s an important local topic right now.

If you’ve seen people photographing home exteriors, don’t worry. The county is updating property records and values.

I’ve been a REALTOR® in Lancaster County for over 20 years. I want to make this easier to understand.

What Exactly Is a Reassessment?

A reassessment updates property values to reflect today’s market. Its goal is to distribute the tax burden fairly.

If one home gained more value than another, taxes should reflect that difference more accurately.

This is Lancaster County’s first countywide reassessment since 2018. A lot has changed in our market since then: inventory up and down, multiple offers, offers with or without inspections, etc. As a result, 2018 values no longer tell the full story in 2026.

The Goal: 100% Fair Market Value

A common misconception is that a reassessment is just a hidden way for the government to hike your taxes. The primary goal is fairness, not a tax hike. By law, a countywide reassessment must be “revenue neutral” for the county and municipalities.

This means that if the total value of all properties in the county goes up, the tax rate (the millage) must be adjusted downward so the county isn’t suddenly swimming in extra cash. Therefore, while some people might see their taxes go up because their property value grew faster than the average, others might actually see their taxes go down or stay exactly the same.

The “Magic” Formula: How Values Are Calculated

This is the part that can feel a little mysterious, so let’s make it simple. In Pennsylvania, “welcome stranger” taxing is illegal. In other words, the county cannot raise your assessment just because your house sold. A sale can provide market evidence, however, there is still a legal formula that has to be followed.

There are really two different methods, depending on when the value is being calculated:

1. During a Reassessment:
   Assessed Value = 100% of Fair Market ValueDuring a countywide reassessment, the goal is to bring everyone to full market value at the same time. Therefore, the assessed value should match what the property would reasonably sell for on the open market.
2. Between Reassessments:
   Use the Common Level Ratio (CLR)Between countywide reassessments, Pennsylvania uses a leveling factor called the Common Level Ratio. The formula is:Sale Price x CLR = Estimated Assessed Value

For example, Lancaster County’s current CLR is around 60.4% for 2024–2025, and it is projected to drop to 53.43% for the July 2025–2026 period. So, if a home sells for $400,000, the estimated “fair” assessed value using that projected CLR would be about $213,720:

$400,000 x 53.43% = $213,720

That number often surprises people. Consequently, if you see a home sell for one price and then notice a lower assessed value, that does not automatically mean something improper happened. It usually means the county is following the legal ratio that applies between reassessments.

Mark Your Calendars: The Timeline

Timing is everything in real estate, and the reassessment is no different. Here is the schedule you need to keep on your radar:

1. Now (2025–2026): Assessors may be doing exterior-only inspections. If you see someone looking at your house from the sidewalk, they are likely just verifying the data the county has on file.
2. By July 1, 2026: This is a big one. You will receive a notice in the mail with your property’s new assessed value.
3. The 40-Day Window: Once you get that notice, you have exactly 40 days to file an appeal if you think the value is incorrect.
4. January 1, 2027: The new values become effective for your County and Municipal taxes.
5. July 1, 2027: The new values become effective for your School District taxes.

If you’re thinking about moving before these changes take full effect, you might want to browse my office’s listings to see what the current market looks like in different townships.

What Should You Do Right Now?

You do not need to wait until July. It is smart to be proactive now.

Check Your Records
Start by reviewing your property record on the Lancaster County website. Small errors can affect value.

They may list incorrect square footage or features. Fixing mistakes now can help later.

Understand Your Market
It also helps to know what similar homes are selling for nearby. Market data matters during appeals. You can follow Neighborhood News for local updates and trends. If your value seems high compared with nearby sales, gather that evidence early.

Don’t Panic
Most importantly, stay calm. A higher assessment does not automatically mean a higher tax bill.

Remember the revenue-neutral rule. You can also use our financial calculators to test scenarios.

How This Affects Buyers and Sellers

If you plan to sell in 2026, buyers will likely ask about future taxes. A fair and accurate assessment can give buyers more confidence. That can help your sale. For more guidance, see my 5 steps to prep your home for 2026 buyers.

If you are buying, pay attention to the home’s implied value. Compare price and current assessment. If the price is much higher than the 2018 assessment, expect adjustment in 2027.

You can visit searchlancolistings.com for current home data and listings.

The Appeals Process: Your Right to Be Heard

If your new value seems too high, you have the right to appeal. That protection matters.  You will have a 40-day window to file your appeal after receiving the notice. Bring evidence such as recent comparable sales. You must show the county’s value is higher than market value.

I’ve helped many clients through this process in 2018. Good data makes a big difference. If you need help, contact me. I can help you pull strong comparable sales.

Why Experience Matters

Real estate here is personal, local, and detailed. Experience helps you see what numbers alone can miss. I work hard to be a resource for neighbors and clients. That includes reassessment questions and market guidance. You can learn more about my background on my bio page.

Wrapping Up

I hope this makes the 2027 reassessment feel less overwhelming and easier to understand. Lancaster County remains a wonderful place to live. Strong values and strong community still matter here, If you have questions about your property, I’m always happy to talk.

Wishing you a wonderful spring season in beautiful Lancaster County.

Warmly,

Joyce Herr