Sunnyvale property tax protests: 2026 data

2,856 single-family homes in Dallas County, compared with their most similar neighbors.

Updated October 12, 2026. Source: Dallas Central Appraisal District, 2026 data. Methodology

single-family homes compared
2,856
valued above similar homes nearby
49%
look worth protesting in 2026
77%
of decided 2026 protests got a reduction
74%

49% of Sunnyvale homes are valued above similar homes nearby

We compared each of 2,856 single-family homes with its most similar neighbors (same neighborhood and quality, similar size and age). 49% have a house value above the median of those homes: together, $34 million of house value above them. Texas lets you protest a value that is above the median of comparable homes.

Source: Dallas Central Appraisal District, 2026

2,198 Sunnyvale homes look worth protesting in 2026

We rate 417 "Yes" and 1,781 "Maybe".

Source: Dallas Central Appraisal District, 2026

38% of Sunnyvale homeowners protested in 2026, and 74% of decided protests got a reduction

Of 2,856 Sunnyvale homeowners in our data, 1,085 protested their 2026 value; 802 of 1,079 decided protests lowered it, typically by $22,075 (3.2% of the value).

Source: Dallas Central Appraisal District, 2026

Sunnyvale homeowners who protested on their own got bigger reductions than those who hired an agent: $34,720 vs. $20,640

The typical winning protest cut the value by 4.8% on your own vs. 3% with an agent.

On your own

$34,720

typical value cut among wins (4.8%)

Decided protests won
59%
Cost
$0–50
Off the yearly tax bill
about $503, all yours

With a paid agent

$20,640

typical value cut among wins (3%)

Decided protests won
78%
Cost
25–40% of the tax saved
Off the yearly tax bill
about $299, minus $75–$120 to the agent

Source: the Dallas Central Appraisal District, 2026 protests. Tax figures at a typical 1.5% effective tax rate. Agent or do it yourself? · Methodology

An agent keeps 25–40% of what you save. Doing it yourself costs $0–50.

At a typical 1.5% Texas tax rate, the typical win on your own takes about $503 a year off the tax bill, and you keep all of it. The typical agent win takes off about $299, and the agent keeps about $75–$120 of that. Filing is free, online or by mail, and there's no agent contract to renew or cancel each year.

Source: Dallas Central Appraisal District, 2026

793 Sunnyvale homes valued above similar homes weren't protested

Their house values were above the median of the most similar neighbors, the comparison Texas law allows a protest on, but their owners didn't protest in 2026.

Source: Dallas Central Appraisal District, 2026

The typical Sunnyvale home's value rose 0% this year

Median change in appraised market value from last year.

Source: Dallas Central Appraisal District, 2026

The typical Texas home pays about $7,106 a year in property tax

Our estimate from 2026 published tax rates and each home's exemptions: 1.5% of market value. (The Dallas Central Appraisal District doesn't publish tax rates with its data, so this uses our Texas data.)

Source: our Texas data

15% of Sunnyvale homes have no homestead exemption on file

Usually a rental or second home. If it's your own home, a homestead exemption takes $140,000 off its school taxable value and caps yearly increases in taxable value at 10%; you apply with your appraisal district (Form 50-114).

Source: Dallas Central Appraisal District, 2026

Is your home one of them?

Free, in about 10 seconds: how your home compares with similar homes nearby.

By the numbers

Single-family homes2,856
Median market value$662,675
Median change from last year+0%
Median value per sq ft$198
Median living area3,361 sq ft
Median lot17,923 sq ft
Median year built2007
Homes with a pool26%
Homestead exemption on file85%
Homes with a paid protest agent33%

Sunnyvale by county

CountyHomesMedian valueChangeAbove similar homesWorth protestingProtestedWon
Dallas County2,856$662,675+0%49%77%38%74%

"Above similar homes": share of homes whose house value is above the median of their most similar neighbors. "Worth protesting": homes we rate Yes or Maybe. "Won": share of decided protests that lowered the value.

Neighborhoods in Sunnyvale

Showing 10 of 40 neighborhoods

Appraisal neighborhoods, named after their most common subdivision. Homes counted here are the ones in Sunnyvale.

Streets where most homes are valued above similar homes

StreetHomesAbove similar homesMedian gap
LOST CREEK DR1080%+3.1%
EAGLES CREST DR1979%+2.9%
SUNCREST WAY1173%+1.1%
WINDRIDGE DR1070%+0.8%
ROCKSHIRE DR1669%+2.1%
AUBURN HILLS DR1567%+1.3%
HEARTHSTONE DR3265%+1.4%
RAIN TREE DR3364%+0.9%
MITCHELL DR1164%+0.6%
STARDUST LN1164%+0.1%

Streets with at least 10 homes we could compare. "Median gap": how far the street's typical house value is from its comparables' median.

How to protest

The protest deadline is May 15, or 30 days after your appraisal notice was mailed, whichever is later. Check the date on your notice. New to this? Read how to protest.

Have a specific Texas address? Check it at taxprotesting.com/check?address=1234 Main St, Plano, TX with your own street address, or use the search box.

Based on 2026 appraisal values and protest outcomes from the Dallas Central Appraisal District. Estimates, not promises: every protest is decided on its own evidence.