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HB 457UTAHSession 2026State BillSigned into law
Enacted

Utah Law Mandates Automatic Annexation of Certain Unincorporated Islands and Modifies County Governance Rules

Original title: County Governance Modifications

Last action · March 26, 2026: Governor SignedSponsors: Jim Dunnigan and 1 other

Bill progressHistory & official text ↓
Introduced
Committee
Floor Vote
Passed
Law

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What This Bill Does

Utah enacts legislation requiring certain s in second-class counties to automatically annex into bordering municipalities by July 1, 2027, while permitting local legislative bodies to exempt certain areas, allowing non-contiguous areas on annexation plats, and modifying county accounting service delegation rules.

Why it matters

Property owners in qualifying s will see their municipal jurisdiction change, affecting which local government provides services, levies property taxes, and assesses fees starting on the specified effective dates.

Who It Affects

Groups the bill's text affects, as described in the record. Being affected is not a position for or against it.

Directly affected

real property owners in unincorporated islands

Property owners will experience a change in municipal jurisdiction, receive written notice of annexation by May 1, 2027, and become subject to municipal services, taxes, and fees.

Directly affected

counties of the second class

County governments must mail written notices, publish notices on the public notice website, and adjust local governance processes for automatic annexations.

Directly affected

municipalities

Municipalities surrounding qualifying unincorporated islands will absorb those areas into their corporate boundaries unless an exemption resolution is passed.

Key Facts

You don't have to trust us. Each fact below is taken straight from the official document - click any one to see the exact passage, highlighted in the original.

Frequently Asked Questions

When do the automatic annexations of unincorporated islands take effect?
The automatic annexations for qualifying s in second-class counties are scheduled to take effect on July 1, 2027.
Can an unincorporated island be exempted from automatic annexation?
Yes. Depending on the county's population threshold, either the county legislative body or the municipal legislative body may exempt an or a portion of it by adopting a resolution on or before May 1, 2027.
When can a municipality start collecting property taxes or fees in a newly annexed area?
A municipality may not levy or collect property taxes, assessments, or service fees in an affected area until the required annexation documents are recorded in the office of the recorder of each county where the property is located.

What else do you want to know?

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Where This Stands

Current status: Signed into law.

Procedural history

66 actions
  1. Mar 26, 2026Lieutenant Governor's office for filingEnrolled
    Governor Signed
  2. Mar 16, 2026House
    House/ to Governor
  3. Mar 16, 2026House
    House/ received enrolled bill from Printing
  4. Mar 12, 2026House
    House/ enrolled bill to Printing
  5. Mar 12, 2026Clerk of the House
    Enrolled Bill Returned to House or Senate
  6. Mar 11, 2026Legislative Research and General Counsel / Enrolling
    Draft of Enrolled Bill Prepared
Show 60 earlier actions
  1. Mar 11, 2026Legislative Research and General Counsel / Enrolling
    Bill Received from House for Enrolling
  2. Mar 11, 2026House
    House/ signed by Speaker/ sent for enrolling
  3. Mar 11, 2026House
    House/ received from Senate
  4. Mar 10, 2026Senate
    Senate/ to House
  5. Mar 10, 2026Senate
    Senate/ signed by President/ returned to House
  6. Mar 10, 2026Senate
    Senate/ received from House
  7. Mar 6, 2026House
    House/ to Senate
  8. Mar 6, 2026House
    House/ concurs with Senate amendment
  9. Mar 6, 2026House
    House/ placed on Concurrence Calendar
  10. Mar 6, 2026House
    House/ received from Senate
  11. Mar 6, 2026Senate
    Senate/ to House with amendments
  12. Mar 6, 2026SenateFloor
    Senate/ passed 2nd & 3rd readings/ suspension
  13. Mar 6, 2026Senate
    Senate/ 2nd & 3rd readings/ suspension
  14. Mar 6, 2026Senate
    Senate/ Rules to 2nd Reading Calendar
  15. Mar 4, 2026Senate
    Senate/ 2nd Reading Calendar to Rules
  16. Mar 4, 2026Released
    LFA/ fiscal note publicly available for HB0457S05
  17. Mar 4, 2026Version Sponsor
    LFA/ fiscal note sent to sponsor for HB0457S05
  18. Mar 4, 2026Senate
    Senate/ placed on 2nd Reading Calendar
  19. Mar 4, 2026Senate
    Senate/ comm rpt/ substituted
  20. Mar 3, 2026Senate
    Senate Comm - Favorable Recommendation
  21. Mar 3, 2026Senate
    Senate Comm - Substitute Recommendation
  22. Mar 3, 2026Legislative Fiscal Agency
    LFA/ bill sent to agencies for fiscal input for HB0457S05
  23. Mar 3, 2026Legislative Fiscal Analyst
    LFA/ bill assigned to staff for fiscal analysis for HB0457S05
  24. Mar 2, 2026Released
    LFA/ fiscal note publicly available for HB0457S03
  25. Mar 2, 2026Version Sponsor
    LFA/ fiscal note sent to sponsor for HB0457S04
  26. Mar 2, 2026Version Sponsor
    LFA/ fiscal note sent to sponsor for HB0457S03
  27. Feb 27, 2026SenateCommittee
    Senate/ to standing committee
  28. Feb 27, 2026SenateIntroduced
    Senate/ 1st reading (Introduced)
  29. Feb 27, 2026Senate
    Senate/ received from House
  30. Feb 27, 2026House
    House/ to Senate
  31. Feb 27, 2026HouseFloor
    House/ passed 3rd reading
  32. Feb 27, 2026House
    House/ substituted
  33. Feb 27, 2026House
    House/ uncircled
  34. Feb 27, 2026House
    House/ circled
  35. Feb 27, 2026House
    House/ 3rd reading
  36. Feb 27, 2026Legislative Fiscal Agency
    LFA/ bill sent to agencies for fiscal input for HB0457S04
  37. Feb 27, 2026Legislative Fiscal Analyst
    LFA/ bill assigned to staff for fiscal analysis for HB0457S04
  38. Feb 26, 2026Legislative Fiscal Agency
    LFA/ bill sent to agencies for fiscal input for HB0457S03
  39. Feb 26, 2026Legislative Fiscal Analyst
    LFA/ bill assigned to staff for fiscal analysis for HB0457S03
  40. Feb 26, 2026Released
    LFA/ fiscal note publicly available for HB0457S01
  41. Feb 26, 2026Version Sponsor
    LFA/ fiscal note sent to sponsor for HB0457S02
  42. Feb 26, 2026Version Sponsor
    LFA/ fiscal note sent to sponsor for HB0457S01
  43. Feb 24, 2026House
    House/ 2nd reading
  44. Feb 24, 2026House
    House/ comm rpt/ substituted
  45. Feb 24, 2026House
    House Comm - Favorable Recommendation
  46. Feb 24, 2026House
    House Comm - Substitute Recommendation
  47. Feb 23, 2026Legislative Fiscal Agency
    LFA/ bill sent to agencies for fiscal input for HB0457S02
  48. Feb 23, 2026Legislative Fiscal Analyst
    LFA/ bill assigned to staff for fiscal analysis for HB0457S02
  49. Feb 23, 2026Legislative Fiscal Agency
    LFA/ bill sent to agencies for fiscal input for HB0457S01
  50. Feb 23, 2026Legislative Fiscal Analyst
    LFA/ bill assigned to staff for fiscal analysis for HB0457S01
  51. Feb 13, 2026HouseCommittee
    House/ to standing committee
  52. Feb 5, 2026House
    House/ received fiscal note from Fiscal Analyst
  53. Feb 5, 2026Released
    LFA/ fiscal note publicly available for HB0457
  54. Feb 5, 2026Version Sponsor
    LFA/ fiscal note sent to sponsor for HB0457
  55. Feb 3, 2026HouseIntroduced
    House/ 1st reading (Introduced)
  56. Feb 3, 2026House
    House/ received bill from Legislative Research
  57. Feb 2, 2026Legislative Fiscal Agency
    LFA/ bill sent to agencies for fiscal input for HB0457
  58. Feb 2, 2026Legislative Fiscal Analyst
    LFA/ bill assigned to staff for fiscal analysis for HB0457
  59. Feb 2, 2026Legislative Research and General Counsel
    Numbered Bill Publicly Distributed
  60. Feb 2, 2026Legislative Research and General Counsel
    Bill Numbered but not Distributed

Version history

Only one version on file - nothing to compare yet. As later stages (committee substitute, engrossed, enrolled) are captured, the redline appears here.

View official text →

Lobbying Activity

No state lobbying filings in our records match this bill. Federal lobbying reports (LDA) cover Congress, so they are not listed on state bills.

Full breakdown

Who this bill affects and the strongest case for and against it, written only from the bill’s own text.

Sponsors

Jim DunniganHouse · District 36RepublicanPrimary sponsor
Ron WintertonSenate · District 20RepublicanCosponsor

Discoveries

1 pattern noticed across the record

Patterns POLISCOPE noticed across the record. These are observations to investigate, not conclusions.

policy shift95% confidence

Shift Toward Automatic Annexation of Small Unincorporated Islands

The legislation establishes a definitive timeline (July 1, 2027) for the automatic incorporation of small unincorporated islands into surrounding municipalities, replacing purely petition-based annexation in qualifying areas.

Connected Entities

Ronald M. Winterton, James A. Dunnigan
PersonRonald M. Winterton“Senate Sponsor of HB 457”Map →
PersonJames A. Dunnigan“Chief Sponsor of HB 457”Map →

Sources

Open source document

le.utah.gov

Analysis Score

0–100
  • Significance60
    How much this matters to a regular citizen
  • Controversy25
    Intensity of disagreement among stakeholders
  • Entertainment5
    Compellingness for a non-policy-wonk reader
  • Buzz20
    Current news / social attention level

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