HB 477 Utah House · 2026 General Session

Land Use Regulation Revisions

HB 477 revises Utah's land use regulations to streamline municipal processes and expand housing options. It directly affects municipalities by modifying how they handle incorporation feasibility requests, planning commission duties, and approvals for new business uses. Key provisions include requiring certain municipalities to allow detached accessory dwelling units (like backyard cottages) as permitted uses in specific zones, adjusting deadlines for modified incorporation requests, and clarifying when counties can deny building permits for infrastructure issues. The bill makes no changes to funding requirements and takes effect in May 2026.
Bill status in committee 1 of 4 stages cleared
Introduction
Feb 2026
Committee Review
Floor Vote
Governor
Introduced Feb 4, 2026 Last action Mar 7, 2026
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What changed between versions

Introduced Substitute #1 · 9 edits
MAJOR
This bill revises Utah's land use regulations to modernize municipal incorporation processes, strengthen planning commission oversight, and clarify rules for accessory dwelling units and infrastructure improvements. The changes primarily affect municipalities, counties, and developers by updating feasibility study procedures, adding training requirements for planning commissioners, and modifying how infrastructure completion assurances are handled. These updates aim to streamline development processes while ensuring adequate infrastructure and public input.
Scope change
The bill expands applicability to include new definitions for detached accessory dwelling units and clarifies ministerial nature of certain county land use ordinances. It also extends certain provisions to counties in addition to municipalities, particularly regarding planning commissions and infrastructure requirements.
REQUIREMENT

Added new Section 10-21-304 requiring specified municipalities to permit detached accessory dwelling units as a permitted use in residential zones, with specific restrictions on size, parking, and utility access.

Modified feasibility request procedures to allow sponsors to modify incorporation boundaries and refile requests under specific conditions, with updated timelines for filing modified requests.

Added mandatory annual training requirements for planning commission members, including four hours of training on land use and ethics topics.

Modified infrastructure completion assurance requirements to mandate interest-bearing accounts for cash deposits and clarify when counties may deny building permits for incomplete infrastructure.

FISCAL

Modified municipal incorporation fee structure to create a special revenue fund and establish payback agreements requiring new municipalities to reimburse feasibility study costs over up to five years.

DEFINITION

Added new definitions for 'detached accessory dwelling unit,' 'home ownership promotion zone,' and related housing and transit terms to clarify regulatory requirements.

ENFORCEMENT

Added specific limitations on counties' ability to deny permits for incomplete infrastructure improvements, distinguishing between essential and non-essential infrastructure requirements.

TIMELINE

Modified effective dates for various sections, with most provisions effective May 6, 2026, and the new detached accessory dwelling unit section effective October 1, 2026.

TECHNICAL

Made technical corrections to code section numbers and formatting throughout the bill to align with current statutory numbering.

Floor votes

How they voted

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Full legislative history

Actions timeline

Total actions
18
Key actions
2
Committee
3
Mar 5, 2026
Lower · Passed
House/ comm rpt/ sent to Rules [House Rules Committee]
lower
Mar 3, 2026
Lower · Passed
House Comm - Recommends Returned to Rules [House Political Subdivisions Committee]
lower
Feb 11, 2026
Committee
House/ to standing committee [House Political Subdivisions Committee]
lower
Feb 4, 2026
Introduced
House/ 1st reading (Introduced)
lower
1 primary · 1 co-sponsor

Sponsors