---
type: "Bill"
title: "Land Use and Real Property - Accessory Dwelling Units - Requirements and Prohibitions"
description: "Land Use and Real Property - Accessory Dwelling Units - Requirements and Prohibitions"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2025"
identifier: "HB 1466"
citation: "Maryland HB 1466 (2025)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Allen", "Behler", "Boyce", "Ciliberti", "Healey", "Holmes", "Otto", "R. Lewis", "Stein", "Stewart"]
version_count: 3
action_count: 13
vote_count: 2
first_action: "2025-02-07"
last_action: "2025-04-22"
source: "openstates"
source_identifier: "ocd-bill/260323f8-d0c9-4f77-8633-398cd40a9edf"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb1466?ys=2025RS&search=True"
source_hash: "b85eab6abcc5e25984d4d633448147cfcce0b8afb5664f0af50e9b9889461dbc"
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 1466 (2025) — Land Use and Real Property - Accessory Dwelling Units - Requirements and Prohibitions

## Version chain

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

1. **Chapter - Land Use and Real Property - Accessory Dwelling Units - Requirements and Prohibitions** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/Chapters_noln/CH_197_hb1466t.pdf)
2. **First - Land Use and Real Property - Accessory Dwelling Units - Requirements and Prohibitions** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/bills/hb/hb1466f.pdf)
3. **Third - Land Use and Real Property - Accessory Dwelling Units - Requirements and Prohibitions** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/bills/hb/hb1466t.pdf)

## Votes

- On Third Reading — **47–0** (pass) · upper
- On Third Reading — **138–1** (pass) · lower

## Sponsors

- Allen — primary (person)
- Behler — primary (person)
- Boyce — primary (person)
- Ciliberti — primary (person)
- Healey — primary (person)
- Holmes — primary (person)
- Otto — primary (person)
- R. Lewis — primary (person)
- Stein — primary (person)
- Stewart — primary (person)

## Timeline

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

- **2025-02-07** First Reading Environment and Transportation `referral-committee`
- **2025-02-07** Hearing 3/04 at 1:00 p.m.
- **2025-03-15** Favorable with Amendments Report by Environment and Transportation `committee-passage-favorable`
- **2025-03-15** Favorable with Amendments { `committee-passage-favorable`
- **2025-03-15** Second Reading Passed with Amendments
- **2025-03-17** Third Reading Passed `passage`
- **2025-03-17** Referred Education, Energy, and the Environment `referral-committee`
- **2025-03-27** Favorable Report by Education, Energy, and the Environment `committee-passage-favorable`
- **2025-03-27** Favorable Adopted `committee-passage-favorable`
- **2025-03-27** Second Reading Passed
- **2025-04-02** Third Reading Passed `passage`
- **2025-04-02** Returned Passed
- **2025-04-22** Approved by the Governor - Chapter 197 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/260323f8-d0c9-4f77-8633-398cd40a9edf`. Confidence: reported (aggregated from official Maryland legislature records).