How much could I save by protesting property taxes at 21519 SIROS ISLE DR?

Based on our analysis, you could save approximately $946 per year by protesting this property tax assessment. Over 5 years, that's $4,730.

What is the protest success rate in this neighborhood?

81% of protests in this neighborhood resulted in a reduction, based on 84 protests filed.

How much does a Texas property tax protest cost?

Most counties charge no filing fee. This service fee covers your evidence packet and filing workflow support.

Do I need an attorney to file a property tax protest?

No. Texans can often file directly through the CAD's iFile system and upload your support documents for review.

What is the first step to filing a protest?

Confirm your filing deadline from the Notice of Appraised Value and begin preparing comparable sales evidence first.

Protest Deadline: May 15, 2026 (40 days left)

This Spring home is assessed 30.1% above the neighborhood median

21519 SIROS ISLE DR — Harris County

Estimated annual tax savings

$946

$4,730 over 5 years if reduced to neighborhood median

81%

Win rate

Protests filed

$18,004

Median reduction

Your $/sqft

$186

Neighborhood median

$143

Appraised value

$215,422

% above median

30.1%

Heated area

1,161 sqft

Year built

2004

Year-over-year assessment change

+3.0%

This property's appraised value increased from the prior year.

Comparable properties in your neighborhood

These homes are similar and assessed lower per square foot.

Address	Sqft	Year	Market Value	$/Sqft	Diff
21603 ASTIPALIA DR	1,161	2004	$210,188	$181	-$5
21618 ASTIPALIA DR	1,161	2004	$193,746	$167	-$19

21622 ASTIPALIA DR	1,161	$207,600
4919 SIROS ISLE CT	1,161	$209,010
5023 KASOS ISLE DR	1,161	$185,000
4911 KALITHEA CT	1,161	$207,063

🔒 4 more comparable properties available in your evidence packet

How we calculated this

We compared this property's assessed value per square foot ($186/sqft) against the median for the neighborhood ($143/sqft). This property is assessed 30.1% higher than typical homes nearby.

If the appraisal district adjusted the value to the neighborhood median, the owner could save approximately $946 per year in property taxes based on the Harris County effective tax rate.

In this neighborhood, 81% of protests resulted in a reduction, with a median reduction of $18,004.

What you'll receive

📋

Filing Guide

Your exact deadline, required forms, and step-by-step Harris County filing process

📊

Evidence Packet

Full comparable sales analysis with assessment discrepancy calculation

✉️

Cover Letter

Pre-written appeal letter with hearing talking points, ready to sign and submit

This decision compounds

Year 1

$946

Year 2

$1,892

Year 3

$2,838

That’s a 58× return on $49

Get your protest packet

One-time fee · No recurring charges · You keep 100% of your savings

Secure checkout via Stripe · 7-day money-back guarantee

Protest deadline: May 15, 2026 (40 days left)

See more properties in Astipalia & Amorgas Isle area, Spring 77388 · Spring neighborhoods