The Collin Central Appraisal District released certified estimated taxable values for 2026, showing modest countywide growth alongside shifts in local markets for cities like Wylie, Murphy and small districts such as Seis Lagos, St. Paul and Elevon MUD; Brian Swanson of CCAD provides context on construction and home value trends across Collin County, Texas.

Collin County’s certified estimated taxable value ticked up 1.28% to $272.8 billion for 2026, and the rolls gained $7.87 billion in new property by late April. That mix of modest overall growth and substantial new construction in parts of the county is shaping revenue expectations for local taxing entities. CCAD sent real property appraisal notices out April 15, and property owners who disagree with valuations may file protests by the deadline on their notices.

CCAD reported the county’s average market value for a home in 2026 at $592,948, a slight dip from $599,487 the year before. The small decline in existing home values is appearing unevenly as new construction offsets softness in resale prices in many neighborhoods. Local officials and taxpayers will be watching how certified values translate into tax rate adjustments this spring and summer.

In Wylie, total estimated taxable value edged up 0.04%, moving from $8.69 billion to $8.70 billion, with $71.3 million in new construction representing 0.82% of the total. The estimated average market value of a Wylie home fell to $433,200 in 2026, down from $447,679 last year. Wylie residents still pay taxes to multiple jurisdictions including the city, Collin County (or Dallas or Rockwall depending on location), Wylie ISD and Collin College.

Wylie Independent School District saw its estimated taxable value decline 1.63% to $10.81 billion, even while adding $180.7 million in new construction that made up 1.64% of the district’s value. The average estimated market value of a home inside WISD was $473,527 this year, compared with $483,634 in 2025. Those shifts matter because school districts are often the biggest drivers of property tax bills for homeowners.

Smaller, specialized districts showed mixed results. Seis Lagos Utility District’s total estimated taxable value dipped 0.31% to $453 million from $454.4 million, and it added $1.74 million in new construction. Still, the estimated average market value of a home in Seis Lagos rose to $913,247 in 2026 from $903,075 the year before, reflecting the unique dynamics in amenity-driven neighborhoods.

The Town of St. Paul reported a 2.15% decrease in total estimated certified values to $211 million with $2.5 million in new construction, while Collin County WCID No. 3, which includes the Inspiration area, saw values fall 2.86% to $1.11 billion alongside $43.8 million in added construction. Estimated average home values were $589,944 in St. Paul and $577,083 in Inspiration, numbers local officials will parse as they set budgets and rates.

Elevon Municipal Utility District No. 1A was one of the bigger movers, with an 11.3% jump in total estimated taxable value from $169.8 million to $189 million and $29.5 million in new construction recorded. Even with the increase, the district’s estimated average home value eased slightly to $293,412 in 2026 from $296,768 last year. Rapid development pockets can lift tax bases but also change expectations around services and infrastructure.

Nearby Murphy gained 2.18% in total estimated taxable value, rising from $3.96 billion to $4.05 billion, and added $33.9 million in new construction. The estimated average market value of a Murphy home increased to $620,390 in 2026 from $609,774 in 2025. Those gains illustrate how growth corridors in Collin County are still producing demand and new housing even as some resale values cool.

CCAD’s assistant chief appraiser, Brian Swanson, summed up the county’s dynamic this way: “Collin County is still growing at a rapid pace as evidenced by the increase in new construction in most areas,” said Brian Swanson, assistant chief appraiser. “However, the year-over-year existing home values have decreased slightly. This will still result in a slightly upward trend for the taxing entities when we certify the values.”

If you want to challenge your appraisal, residents can file protests online through the Collin Central Appraisal District, by mail or by dropping off their form at the CCAD customer service counter. Paying attention to your property notice now and understanding how new construction and shifts in market value affect your taxing entities will help you decide whether a protest is necessary.