Cities and towns; annexation; procedures; annexation of territory without consent of majority of owners; effective date.
HB 1166 modifies Oklahoma's annexation laws for cities and towns, requiring municipalities to obtain written consent from owners of at least 65% of acres (or majority for larger areas) before annexing land, with smaller cities limited to 8 square miles per annexation. It mandates that cities create and publicly share detailed service plans for water, sewer, fire, and law enforcement before annexation, with a 120-month deadline to implement these services. The bill prohibits annexing land solely to create municipal contiguity and requires special mailing procedures for agricultural landowners (5+ acres) and state trust properties. These changes directly affect landowners in proposed annexation zones and cities seeking to expand their boundaries.
Bill status
signed
all 5 stages cleared
Introduction
Feb 2025
Committee Review
May 2025
House Passage
May 2025
Senate Passage
May 2025
Signed into Law
May 2025
Introduced Feb 3, 2025
Signed May 30, 2025
Maddy AI version diff · 8 comparisons
What changed between versions
Floor (House)
→
Floor (Senate)
·
5 edits
MODERATE
The bill was amended to add strict limitations on city annexation, including a ban on using connecting strips for annexation and a cap of 8 square miles for small cities (population 12,000 or less). The Senate version also introduced a new requirement for municipalities to create and publish a detailed service plan detailing future water, sewer, and fire services before annexation can occur.
Scope change
The bill's scope was narrowed for smaller municipalities by adding a population-based cap on annexation size and prohibiting specific types of annexation (connecting strips) that were previously allowed.
REQUIREMENT
Added a prohibition against annexing land via connecting strips that serve no municipal purpose other than establishing contiguity.
Added a cap limiting municipalities with a population of 12,000 or less to annexing no more than 8 square miles at one time.
Added a mandatory requirement for municipalities to prepare and publish a service plan outlining future infrastructure services before annexation.
Modified the consent threshold for small municipalities to require 65% of acres and 25% of population consent instead of a simple majority.
ENFORCEMENT
Added a mechanism to automatically detach (reverse) the annexation if the municipality fails to complete the required service plan within 120 months.
Floor votes · Senate May 7, 2025 · House Mar 24, 2025
How they voted
46–1
Passed · 2 other
Total votes 49
May 7, 2025
D
Democratic9
100% Yea
R
Republican40
92% Yea
Vote distribution
All Yea
All Nay
Mixed
No data
Full legislative history
Actions timeline
Total actions
45
Key actions
12
Committee
9
Amendments
1
May 30, 2025
Signed into law
Approved by Governor 06/09/2025
lower
May 28, 2025
Committee
Referred for enrollment
lower
May 28, 2025
Upper · Passed
Measure passed, to House: Ayes: 44 Nays: 2
upper
May 28, 2025
Lower · Passed
Fourth Reading, Measure passed: Ayes: 87 Nays: 2
lower
May 28, 2025
Lower · Passed
CCR adopted
lower
May 15, 2025
Lower · Passed
HC's named: Conference Committee on Government Oversight
lower
May 8, 2025
Upper · Passed
Engrossed to House
upper
May 7, 2025
Committee
Referred for engrossment
upper
May 7, 2025
Upper · Passed
Measure passed: Ayes: 44 Nays: 1
upper
May 7, 2025
Introduced
General Order, Amended
upper
Apr 15, 2025
Upper · Passed
Reported Do Pass Judiciary committee; CR filed
upper
Mar 25, 2025
Introduced
First Reading
upper
Mar 25, 2025
Lower · Passed
Engrossed, signed, to Senate
lower
Mar 24, 2025
Committee
Referred for engrossment
lower
Mar 24, 2025
Lower · Passed
Third Reading, Measure passed: Ayes: 76 Nays: 18
lower
Mar 5, 2025
Lower · Passed
CR; Do Pass, amended by committee substitute Government Oversight Committee
lower
Feb 24, 2025
Lower · Passed
Policy recommendation to the Government Oversight committee; Do Pass, amended by committee substitute County and Municipal Government
lower
Feb 17, 2025
Committee
Referred to County and Municipal Government
lower
Feb 17, 2025
Committee
Referred to Government Oversight
lower
Feb 3, 2025
Introduced
First Reading
lower
2 primary · 0 co-sponsors
Sponsors
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