SB 129 South Dakota Senate · 2026 Regular Session

update references in certain statutes to the 2024 standard building codes.

SB 129 updates South Dakota statutes to reference the 2024 edition of the International Building Code, International Property Maintenance Code, and International Residential Code instead of the 2021 editions. It directly affects local governments (cities and counties) that adopt building ordinances, requiring them to use the newer 2024 code standards for construction, maintenance, and residential structures. The bill does not change building requirements but ensures local ordinances align with the latest national model codes. It specifically excludes mobile homes, farmsteads, and certain residential structures from these updated references, as defined in existing law.

Bill status signed all 5 stages cleared

Introduction

Jan 2026

Committee Review

Feb 2026

Senate Passage

Feb 2026

House Passage

Feb 2026

Signed into Law

Mar 2026

Introduced Jan 26, 2026 Signed Mar 4, 2026

Maddy AI version diff · 1 comparison

What changed between versions

Introduced → Enrolled · 6 edits · Feb 23, 2026

MODERATE

This bill updates South Dakota building code references from older versions to the 2024 edition of the International Building Code and related codes. The changes apply to local government ordinances for construction, maintenance, and residential structures, ensuring consistency with current national standards.

Scope change

The bill expands the scope of building code requirements to specifically reference the 2024 edition of the International Building Code for non-residential structures and the 2024 International Residential Code for residential structures, replacing previous code references.

REQUIREMENT

Updated building code references to the 2024 edition of the International Building Code for non-residential construction standards in local ordinances.

Updated building code references to the 2024 edition of the International Residential Code for residential structures, including one-family, two-family dwellings, and townhouses up to three stories.

TIMELINE

Added a provision that design standards for buildings commenced after July 1, 2026, must comply with the 2024 International Building Code if local ordinances haven't been adopted.

DEFINITION

Clarified definitions for residential structures, farmsteads, and mobile/manufactured homes to specify which structures are exempt from certain code requirements.

ENFORCEMENT

Added provisions allowing local units of government to adopt ordinances for local administration and enforcement of design standards.

TECHNICAL

Updated maintenance code references to the 2024 edition of the International Property Maintenance Code for existing structures and premises.

Floor votes · Senate Feb 5, 2026 · House Feb 20, 2026

How they voted

34–0

Passed · 1 other

Total votes 35

Feb 5, 2026

D Democratic3

3 Yea

100% Yea

R Republican32

31 Yea 1

96% Yea

Vote distribution

All Yea All Nay Mixed No data

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Mar 4, 2026

Signed into law

Signed by the Governor on 2026-03-04 S.J. 452

executive

Feb 24, 2026

Upper · Passed

Signed by the Speaker H.J. 435

upper

Feb 23, 2026

Upper · Passed

Signed by the President S.J. 365

upper

Feb 20, 2026

Upper · Passed

House of Representatives Do Pass , Passed, YEAS 64, NAYS 3 H.J. 395

upper

Feb 19, 2026

Upper · Passed

House of Representatives Deferred to another day , Passed, H.J. 372

upper

Feb 18, 2026

Upper · Passed

House of Representatives Deferred to another day , Passed, H.J. 361

upper

Feb 17, 2026

Upper · Passed

House of Representatives Deferred to another day , Passed, H.J. 341

upper

Feb 12, 2026

Upper · Passed

Local Government Do Pass , Passed, YEAS 10, NAYS 1 H.J. 10

upper

Feb 9, 2026

Committee

Referred to House Local Government H.J. 262

upper

Feb 5, 2026

Upper · Passed

Senate Do Pass , Passed, YEAS 34, NAYS 0 S.J. 199

upper

Feb 4, 2026

Upper · Passed

Certified uncontested, placed on consent , Passed, S.J. 3

upper

Feb 4, 2026

Upper · Passed

Local Government Do Pass , Passed, YEAS 7, NAYS 0 S.J. 3

upper

Jan 26, 2026

Introduced

First read in Senate and referred to Senate Local Government S.J. 112

upper

2 primary · 0 co-sponsors