---
type: "Bill"
title: "Maryland Department of Labor - Study on Building Code Requirements for Single-Staircase Buildings"
description: "Maryland Department of Labor - Study on Building Code Requirements for Single-Staircase Buildings"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2025"
identifier: "HB 489"
citation: "Maryland HB 489 (2025)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Allen", "Boyce", "Foley", "Holmes", "Lehman", "R. Lewis", "Stewart", "Ziegler"]
version_count: 4
action_count: 15
vote_count: 3
first_action: "2025-01-20"
last_action: "2025-05-13"
source: "openstates"
source_identifier: "ocd-bill/94def9a9-5eb7-4b0a-b87d-92894b1a4884"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0489?ys=2025RS&search=True"
source_hash: "225459b41a61d787937da6b108d2cde8a79c9c3f56fc6e9336a0ef79d469f9fa"
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-md"]
---

# Maryland HB 489 (2025) — Maryland Department of Labor - Study on Building Code Requirements for Single-Staircase Buildings

## Version chain

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

1. **Chapter - Maryland Department of Labor - Study on Building Code Requirements for Single-Staircase Buildings** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/Chapters_noln/CH_504_hb0489e.pdf)
2. **Enrolled - Maryland Department of Labor - Study on Building Code Requirements for Single-Staircase Buildings** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/bills/hb/hb0489e.pdf)
3. **First - Maryland Department of Labor - Study on Building Code Requirements for Single-Staircase Buildings** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/bills/hb/hb0489f.pdf)
4. **Third - Maryland Department of Labor - Study on Building Code Requirements for Single-Staircase Buildings** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/bills/hb/hb0489t.pdf)

## Votes

- On Third Reading (Amend) — **35–7** (pass) · upper
- On Third Reading and Final Passage (Hse concurred) — **113–25** (pass) · lower
- On Third Reading — **123–12** (pass) · lower

## Sponsors

- Allen — primary (person)
- Boyce — primary (person)
- Foley — primary (person)
- Holmes — primary (person)
- Lehman — primary (person)
- R. Lewis — primary (person)
- Stewart — primary (person)
- Ziegler — primary (person)

## Timeline

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

- **2025-01-20** First Reading Environment and Transportation `referral-committee`
- **2025-01-22** Hearing 2/11 at 1:00 p.m.
- **2025-03-03** Favorable with Amendments Report by Environment and Transportation `committee-passage-favorable`
- **2025-03-04** Favorable with Amendments { `committee-passage-favorable`
- **2025-03-04** Second Reading Passed with Amendments
- **2025-03-06** Third Reading Passed `passage`
- **2025-03-07** Referred Education, Energy, and the Environment `referral-committee`
- **2025-04-05** Favorable with Amendments Report by Education, Energy, and the Environment `committee-passage-favorable`
- **2025-04-05** Favorable with Amendments { `committee-passage-favorable`
- **2025-04-05** Second Reading Passed with Amendments
- **2025-04-05** Third Reading Passed `passage`
- **2025-04-07** House Concurs Senate Amendments
- **2025-04-07** Third Reading Passed `passage`
- **2025-04-07** Passed Enrolled
- **2025-05-13** Approved by the Governor - Chapter 504 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/94def9a9-5eb7-4b0a-b87d-92894b1a4884`. Confidence: reported (aggregated from official Maryland legislature records).