---
type: "Bill"
title: "Construction: other; use of design-build constructing for certain school buildings; allow. Amends secs. 1, 1a & 2 of 1937 PA 306 (MCL 388.851 et seq.)."
description: "Construction: other; use of design-build constructing for certain school buildings; allow. Amends secs. 1, 1a & 2 of 1937 PA 306 (MCL 388.851 et seq.)."
jurisdiction: "us/states/mi"
legislature: "Michigan Legislature"
session: "2023-2024"
identifier: "HB 4603"
citation: "Michigan HB 4603 (2023-2024)"
classification: ["bill"]
subjects: ["Construction: other", "Occupations: architects", "professional engineers", "and surveyors", "State agencies (existing): talent and economic development"]
status: "enacted"
primary_sponsors: ["Tullio Liberati"]
version_count: 5
action_count: 33
vote_count: 2
first_action: "2023-05-23"
last_action: "2024-07-30"
source: "openstates"
source_identifier: "ocd-bill/6a2a67f1-d84e-482e-ade0-dbf1c455a4ad"
source_url: "https://legislature.mi.gov/Bills/Bill?ObjectName=2023-HB-4603"
source_hash: "a03bff172737723ced74580e6c13084f652eebbbcf7c78d5a62b548eac2bfd19"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mi"]
---

# Michigan HB 4603 (2023-2024) — Construction: other; use of design-build constructing for certain school buildings; allow. Amends secs. 1, 1a & 2 of 1937 PA 306 (MCL 388.851 et seq.).

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **As Passed by the House** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billengrossed/House/pdf/2023-HEBH-4603.pdf)
2. **As Passed by the Senate** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billengrossed/House/pdf/2023-HEBS-4603.pdf)
3. **House Concurred Bill** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billconcurred/House/pdf/2023-HCB-4603.pdf)
4. **House Introduced Bill** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billintroduced/House/pdf/2023-HIB-4603.pdf)
5. **Public Act** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/publicact/pdf/2024-PA-0067.pdf)

## Votes

- PASSED ROLL CALL # 248 YEAS 37 NAYS 1 EXCUSED 0 NOT VOTING 0 — **37–1** (pass) · upper
- passed; given immediate effect Roll Call # 25 Yeas 95 Nays 11 Excused 0 Not Voting 2 — **95–11** (pass) · lower

## Sponsors

- Tullio Liberati — primary (person)
- Angela Witwer — cosponsor (person)
- Brenda Carter — cosponsor (person)
- Cynthia Neeley — cosponsor (person)
- Emily Dievendorf — cosponsor (person)
- Graham Filler — cosponsor (person)
- Helena Scott — cosponsor (person)
- Karen Whitsett — cosponsor (person)
- Mark Tisdel — cosponsor (person)
- Matthew Bierlein — cosponsor (person)
- Samantha Steckloff — cosponsor (person)
- Stephanie A. Young — cosponsor (person)
- Tyrone Carter — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-05-23** introduced by Representative Tullio Liberati `introduction`
- **2023-05-23** read a first time `reading-1`
- **2023-05-23** referred to Committee on Regulatory Reform `referral-committee`
- **2023-05-24** bill electronically reproduced 05/23/2023
- **2024-02-20** reported with recommendation with substitute (H-2) `committee-passage`
- **2024-02-20** referred to second reading
- **2024-03-12** read a second time `reading-2`
- **2024-03-12** substitute (H-2) adopted
- **2024-03-12** substitute (H-3) adopted
- **2024-03-12** placed on third reading
- **2024-03-13** read a third time `reading-3`
- **2024-03-13** passed; given immediate effect Roll Call # 25 Yeas 95 Nays 11 Excused 0 Not Voting 2 `passage`
- **2024-03-13** transmitted
- **2024-03-14** PASSED BY HOUSE WITH IMMEDIATE EFFECT `passage`
- **2024-03-14** REFERRED TO COMMITTEE ON REGULATORY AFFAIRS `referral-committee`
- **2024-05-28** REPORTED FAVORABLY WITHOUT AMENDMENT `committee-passage`
- **2024-05-28** REPORTED FAVORABLY WITHOUT AMENDMENT `committee-passage`
- **2024-05-28** REFERRED TO COMMITTEE OF THE WHOLE `referral-committee`
- **2024-05-28** REFERRED TO COMMITTEE OF THE WHOLE `referral-committee`
- **2024-06-12** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITHOUT AMENDMENT(S) `committee-passage`
- **2024-06-12** PLACED ON ORDER OF THIRD READING
- **2024-06-18** PASSED ROLL CALL # 248 YEAS 37 NAYS 1 EXCUSED 0 NOT VOTING 0 `passage`
- **2024-06-18** INSERTED FULL TITLE
- **2024-06-18** RETURNED TO HOUSE
- **2024-06-18** returned from Senate without amendment
- **2024-06-18** bill ordered enrolled
- **2024-06-25** presented to the Governor 06/25/2024 03:08 PM `executive-receipt`
- **2024-07-30** approved by the Governor 07/08/2024 09:56 AM `executive-signature`
- **2024-07-30** approved by the Governor 07/08/2024 09:56 AM `executive-signature`
- **2024-07-30** filed with Secretary of State 07/08/2024 01:02 PM
- **2024-07-30** filed with Secretary of State 07/08/2024 01:02 PM
- **2024-07-30** assigned PA 67'24
- **2024-07-30** assigned PA 67'24

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/6a2a67f1-d84e-482e-ade0-dbf1c455a4ad`. Confidence: reported (aggregated from official Michigan legislature records).