• County-recorded sales
  • $99 flat, one property
  • You file it

Johnson County, Kansas · property tax appeals

Is your home over-assessed?

Free verdict from the county’s own records.

  • County-recorded sales
  • $99 flat, one property
  • You file it

Right now: 189 days left to file payment under protest for 2026. Deadlines and how filing works

How it works

Three steps. Two of them are free.

  1. Step 1: Enter your address

    The county's own records return a free verdict: over-assessed, consistent, or under-assessed.

  2. Step 2: Read the evidence

    Comparable sales, equity values, ratio math, and deadlines, all on screen, free.

  3. Step 3: File it yourself

    If there is a case, the $99 packet is a cited PDF ready to submit. Owners may represent themselves at the informal meeting and before the Board of Tax Appeals — no attorney required.

Before you start

Not every home has a case.

We updated our valuation model in September 2026 and are re-running our validation. Updated results will be posted here. If your home doesn't have a case, we'll tell you that for free. An appeal reopens the value in both directions: the county appraiser and the Board of Tax Appeals can raise a value on appeal, not only lower it.

The packet

What $99 buys

A PDF you can file as-is: every method's evidence, every figure cited to the county record, and the filing instructions for both appeal paths. Regenerated from the current county record each time you download it.

  1. Section 01

    Cover letter

    Addressed to the Johnson County Appraiser and the Board of Tax Appeals, with the burden-of-proof rule cited, a one-table summary of every evidence method and its status, and the requested correction.

  2. Section 02

    Subject property, county record

    Every field the county holds on the parcel: class, type, year built, areas, rooms, basement, lot, condition grades, and the appeal status on file.

  3. Section 03

    Ratio analysis

    Assessed value, the statutory ratio, and the market value the county is actually taxing.

  4. Section 04

    Recent sale of the subject

    When the home itself sold recently, the strongest evidence in either direction, time-adjusted to the valuation date.

  5. Section 05

    Comparable sales

    Each sale with its date and county-recorded price, the county's own Compare score where the county listed it, and the county's adjusted-sale figure beside ours.

  6. Section 06

    Equity and uniformity

    Your value against the certified values of the nearest similar homes, when they support a reduction.

  7. Section 07

    Record corrections

    The county's square footage, rooms, and basement figures against what you report, as grounds for correction.

  8. Section 08

    Condition

    The county's condition and quality grades, and any condition issues you note, with what to attach.

  9. Section 09

    Property detail on the county record

    The county's own component-level buildup of the improvement value.

  10. Section 10

    How to file

    Both appeal paths with their deadlines, the one-path-per-year rule, the online portal, and what comes after the informal meeting.

  11. Section 11

    Data sources and limitations

    Where every figure came from and what the method can and cannot show.

Pricing

One price. No percentage of your savings.

FeatureThe Check

Free

No account needed

The Packet

$99

One property, one time

Live address lookup & county record detail✓✓
Comparable sales & county similarity scores✓✓
Neighbors' certified values (equity check)✓✓
Ratio math & plain verdict✓✓
Filing deadlines for both appeal paths✓✓
Free reminder when next year's values come out✓—
Full evidence packet as a filing-ready PDF—✓
Cover letter with cited burden-of-proof rule—✓
Comparables, equity & record-correction grids—✓
Filing instructions for both appeal paths—✓
Regenerated from county record on every download—✓
No subscription. Nothing renews. No percentage of your savings.
30

30-day money-back guarantee

100% Risk-Free Guarantee

$99 full refund

If the packet isn't what you expected, email us within 30 days of purchase and we refund the full price. No reason required. A refund ends your access to the packet.

The guarantee covers the purchase, not the county's decision. Nobody can promise an appeal outcome, and this site doesn't. Refund requests: hello@baselineappeals.com.

Where the numbers come from

The county's own records, read carefully.

Sale prices: the county's own records

From the Johnson County Appraiser's per-parcel comparable-sales grids. No sales are invented or modeled.

Comparability: adjusted nearby sales

We start from recent nearby sales that the county itself lists as comparable to your home. We adjust each sale for differences in total finished square footage, construction quality, the county's condition grade, lot size, age, finished basement and time since sale, using adjustment rates estimated from Johnson County sales. An over-assessed finding requires at least three sales close enough to your home to need only small total adjustments. The county's similarity score is shown for reference and doesn't affect the result.

What the tool will not do

No verdict without evidence, no invented sales, no outcome claims, no packet when there is no case.

Independence

Unofficial and independent of Johnson County government. Figures are estimates from public records.

Questions

Common questions

How do you decide whether my home is over-assessed?
Four independent checks run on the county's own record. If the county lists your home's own recent sale on its comparable-sales grid, or you tell us what you paid, that sale is the strongest evidence and takes precedence. Otherwise the comparable-sales method leads: We start from recent nearby sales that the county itself lists as comparable to your home. We adjust each sale for differences in total finished square footage, construction quality, the county's condition grade, lot size, age, finished basement and time since sale, using adjustment rates estimated from Johnson County sales. An over-assessed finding requires at least three sales close enough to your home to need only small total adjustments. The county's similarity score is shown for reference and doesn't affect the result. An equity check compares your value with your neighbors' certified values, and a record check compares the county's square footage and room counts with what you report. A county value 7% or more above what the evidence supports is a case; 3% to 7% is borderline; anything closer reads as consistent.
What happens if there's no case?
You keep everything you saw: the comparable sales, the equity comparison, the ratio math, the deadlines. There is no purchase button on a no-case result, only a free email reminder to check again when next year's notice comes out in March. We updated our valuation model in September 2026 and are re-running our validation. Updated results will be posted here. If your home doesn't have a case, we'll tell you that for free.
Do you file the appeal for me?
No. You file it, and filing is free. Request an informal meeting with the County Appraiser within 30 days of the date the notice of appraised value was mailed. Notices are mailed on or before March 1. File a protest with the County Treasurer when paying the tax: at the time of payment, by December 20 if the tax was paid in full before then, by January 31 of the following year if a mortgage or escrow agent pays, or by May 10 with a second-half or late payment. A property owner may use the valuation-notice appeal OR payment under protest for a given tax year, not both. Whichever is filed first closes the other for that property and year. Owners may represent themselves at the informal meeting and before the Board of Tax Appeals — no attorney required.
What's the guarantee?
If the packet isn't what you expected, email us within 30 days of purchase and we refund the full price. No reason required. A refund ends your access to the packet. The guarantee covers the purchase, not the county's decision. Nobody can promise an appeal outcome, and this site doesn't. Write to hello@baselineappeals.com.

All questions

Check your assessment

A free verdict from the county’s own records. Nothing to sign up for.

  • County-recorded sales
  • $99 flat, one property
  • You file it