21350 Manatee Rock Ln, Katy, TX 77433

Compare this assessment

Start with the county value and property facts, then review appraisal comps, recent sales, and prior-year changes to decide whether the assessment is worth challenging. The comps on this page are free to review; email sign-in is only used to save a printable report.

For nearby context, browse ZIP 77433, Cypress, and Cypress assessment pages.

Protest deadline

The 2026 protest deadline was May 15, 2026. The 2027 protest deadline is May 17, 2027. 2027 notices usually arrive in April.

Deadline rule: May 15, or 30 days after your notice of appraised value is delivered, whichever is later. A deadline on a weekend or holiday moves to the next business day. Evidence is reviewed by the Appraisal Review Board (ARB). Dates checked September 27, 2026 against the official source.

Assessment snapshot

These public HCAD records highlight what may be worth checking before you file.

• Assessment changeThe appraised value changed from $64,600 in 2025 to $464,519 in 2026. A change this large often reflects new construction, a reclassification or a record correction, so check it against the county record.
• Appraised value per square footThe current public record shows about $165 per square foot before any comparable-property adjustments.
• Nearby comparison areaThis page starts the equity review with public records for the Cypress neighborhood and ZIP 77433.
• Neighborhood value signalAmong 1,554 residential records in the same neighborhood, the average appraised value is about $166 per square foot.
• Area year-over-year signalNearby residential records with prior-year values moved about +39.8% on average.

Public appraisal comparison for 2026. Prepared October 13, 2026. Appraisal source: Harris County Appraisal District. Sales data checked in this snapshot: October 12, 2026. Matches consider available size, age, location and property characteristics. How comparisons work.