---
type: "Bill"
title: "Revise the land use and planning act"
description: "Revise the land use and planning act"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "SB 121"
citation: "Montana SB 121 (2025)"
classification: ["bill"]
subjects: ["Cities and Towns", "Counties", "Local Government", "Planning", "Property"]
status: "enacted"
primary_sponsors: ["Forrest Mandeville"]
version_count: 44
action_count: 40
vote_count: 8
first_action: "2024-08-27T14:31:45+00:00"
last_action: "2025-05-13T20:33:14+00:00"
source: "openstates"
source_identifier: "ocd-bill/e086a595-d8f0-476e-988c-aed3ad722e64"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC0016?open_tab=sum"
source_hash: "b9c09333ef075ed0316239e4c7879c38cea44cc397e484c8eab2f732acbb86c9"
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-mt"]
---

# Montana SB 121 (2025) — Revise the land use and planning act

## Version chain

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

1. **LC0016.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=269723)
2. **SB0121.001.002_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=279499)
3. **SB0121.002.001_Amendments-in-Context_final-condensed.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=303953)
4. **SB0121.002.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=303952)
5. **SB0121_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=271142)
6. **SB0121_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=275207)
7. **SB0121_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=276269)
8. **SB0121_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280957)
9. **SB0121_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280958)
10. **SB0121_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280959)
11. **SB0121_1(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280960)
12. **SB0121_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=270576)
13. **SB0121_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280967)
14. **SB0121_2(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307293)
15. **SB0121_2(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307294)
16. **SB0121_2(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307295)
17. **SB0121_2(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307296)
18. **SB0121_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280968)
19. **SB0121_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280969)
20. **SB0121_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=281123)
21. **SB0121_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=281124)
22. **SB0121_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=281125)
23. **SB0121_2(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=281126)
24. **SB0121_2(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=282660)
25. **SB0121_2(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306846)
26. **SB0121_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280962)
27. **SB0121_3(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307324)
28. **SB0121_3(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309008)
29. **SB0121_3(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311293)
30. **SB0121_3(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311297)
31. **SB0121_3.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307322)
32. **SB0121_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311306)
33. **SB0121_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322610)
34. **SB0121_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324931)
35. **SB0121_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325543)
36. **SB0121_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311308)
37. **SB0121_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311987)
38. **SB0121_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311994)
39. **SB0121_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311995)
40. **SB0121_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=317059)
41. **SB0121_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320626)
42. **SB0121_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322608)
43. **SB0121_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322609)
44. **SB0121_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311298)

## Votes

- be_concurred_in_as_amended — **17–0** (pass) · lower
- Do Pass — **44–4** (pass) · upper
- Do Concur — **99–1** (pass) · lower
- Do Pass — **50–0** (pass) · upper
- Do Pass — **50–0** (pass) · upper
- do_pass_as_amended — **11–0** (pass) · upper
- Do Pass — **50–0** (pass) · upper
- Do Concur — **99–0** (pass) · lower

## Sponsors

- Forrest Mandeville — primary (person)

## Timeline

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

- **2024-08-27T14:31:45+00:00** (LC) Drafter Assigned
- **2024-12-30T20:03:48+00:00** (LC) Draft in Legal Review
- **2024-12-31T14:04:56+00:00** (LC) Draft in Edit
- **2025-01-03T16:29:55+00:00** (LC) Draft in Input/Proofing
- **2025-01-03T21:03:09+00:00** (LC) Draft in Final Drafter Review
- **2025-01-04T21:47:09+00:00** (LC) Draft in Assembly
- **2025-01-08T16:52:51+00:00** (LC) Draft Ready for Delivery
- **2025-01-10T16:27:30+00:00** (LC) Draft Delivered to Requester
- **2025-01-10T20:08:00+00:00** (S) Introduced
- **2025-01-10T20:09:35+00:00** (S) First Reading `reading-1`
- **2025-01-13T20:06:00+00:00** (S) Referred to Committee - (S) Local Government `referral-committee`
- **2025-01-16T00:51:57+00:00** (S) Hearing - (S) Local Government
- **2025-02-11T00:20:45+00:00** (S) Committee Executive Action--Bill Passed as Amended - (S) Local Government `committee-passage`
- **2025-02-11T20:35:00+00:00** (S) Committee Report--Bill Passed as Amended - (S) Local Government `committee-passage`
- **2025-02-13T18:18:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-02-13T20:23:00+00:00** (S) 2nd Reading Passed `reading-2, reading-2`
- **2025-02-14T18:18:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-02-14T21:42:00+00:00** (S) 3rd Reading Passed `passage, reading-3`
- **2025-02-14T22:10:58+00:00** (S) Transmitted to House
- **2025-02-17T18:12:50+00:00** (H) Referred to Committee - (H) Local Government `referral-committee`
- **2025-02-17T20:16:01+00:00** (H) First Reading `reading-1`
- **2025-03-07T17:32:51+00:00** (H) Hearing - (H) Local Government
- **2025-04-08T23:48:48+00:00** (H) Committee Executive Action--Bill Concurred as Amended - (H) Local Government
- **2025-04-09T20:13:00+00:00** (H) Committee Report--Bill Concurred as Amended - (H) Local Government
- **2025-04-11T14:30:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-11T15:10:00+00:00** (H) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-11T21:01:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-11T23:55:00+00:00** (H) 3rd Reading Concurred `passage, reading-3`
- **2025-04-12T01:02:14+00:00** (H) Returned to Senate with Amendments
- **2025-04-14T16:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-04-14T16:29:00+00:00** (S) 2nd Reading House Amendments Concurred `amendment-amendment, amendment-passage, reading-2, reading-2`
- **2025-04-15T19:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-04-15T22:07:00+00:00** (S) 3rd Reading Passed as Amended by House `passage, passage, reading-3, reading-3`
- **2025-04-15T22:34:54+00:00** (S) Sent to Enrolling
- **2025-04-16T18:59:32+00:00** (S) Returned from Enrolling
- **2025-04-22T23:00:10+00:00** (S) Signed by President `passage`
- **2025-05-01T18:00:14+00:00** (H) Signed by Speaker `passage`
- **2025-05-01T18:36:33+00:00** (S) Transmitted to Governor `executive-receipt`
- **2025-05-09T02:25:00+00:00** (S) Signed by Governor `executive-signature`
- **2025-05-13T20:33:14+00:00** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/e086a595-d8f0-476e-988c-aed3ad722e64`. Confidence: reported (aggregated from official Montana legislature records).