New Hampshire 2025 Regular Session Status: Enacted Bipartisan · 6 R · 3 D cosponsors

HB 577 — relative to modifying the definition of ADUs.

Last action — Signed by Governor Ayotte 07/15/2025; Chapter 197; eff. 07/01/2025 HJ 18

  1. ✓
    Introduced
  2. ✓
    In Committee
  3. ✓
    Passed House
  4. ✓
    Passed Senate
  5. ✓
    To Executive
  6. 6
    Enacted

This bill has been enacted into law. Introduced January 16, 2025. Enacted.

Signed by Governor Kelly Ayotte (Republican) on July 22, 2025.

Prognosis

Likely to advance 78% · moderate confidence

Where this bill stands today.

Odds of enactment

High

How often bills like it became law.

  • Enacted

    Current position in the legislative process.

  • 9 sponsors

    1 primary, 8 co-sponsors signed on.

  • Bipartisan support

    Sponsored across 2 parties (6 R · 3 D) — cross-party backing.

Prognosis reads this bill's own signals — stage, sponsorship breadth, committee status, recorded votes and cross-state momentum. Odds come from a model trained on which bills have become law.

Bill Text

We don't have the full text on file for this bill yet.

Read HB 577 on the official New Hampshire source →

Amendments

1 amendment

Click Show changes on an amendment above to see how it modifies the bill.

Action History

  1. Signed by Governor Ayotte 07/15/2025; Chapter 197; eff. 07/01/2025 HJ 18

  2. Enrolled Adopted, VV, (In recess 06/26/2025); SJ 18

  3. Enrolled (in recess of) 06/26/2025 HJ 18 P. 59

  4. Enrolled Bill Amendment # 2025-2874e: AA VV (in recess of) 06/26/2025 HJ 18 P. 57

  5. Enrolled Bill Amendment # 2025-2874e Adopted, VV, (In recess of 06/26/2025); SJ 18

  6. Sen. Fenton Floor Amendment # 2025-2162s, AF, VV; 05/15/2025; SJ 13

  7. Ought to Pass: MA, VV; OT3rdg; 05/15/2025; SJ 13

  8. Committee Report: Ought to Pass, 05/15/2025, Vote 5-1; SC 21A

  9. Hearing: 03/25/2025, Room 100, SH, 10:45 am; SC 14

  10. Introduced 03/06/2025 and Referred to Commerce; SJ 7

  11. Ought to Pass with Amendment 2025-0449h: MA VV 03/06/2025 HJ 7 P. 15

  12. Amendment # 2025-0449h: AA VV 03/06/2025 HJ 7 P. 15

  13. Committee Report: Ought to Pass with Amendment # 2025-0449h 02/18/2025 (Vote 18-0; CC) HC 14 P. 10

  14. Executive Session: 02/11/2025 10:00 am LOB 305

  15. Full Committee Work Session: 02/11/2025 10:00 am LOB 305

  16. Public Hearing: 02/04/2025 10:00 am LOB 305

  17. Introduced (in recess of) 01/09/2025 and referred to Housing HJ 3 P. 17

Sponsors

Sponsorship breakdown

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1 sponsors · 8 co-sponsors · 406 not signed on

Sponsors (1)

Co-sponsors (8)

Not signed on (406)

406 members have not signed on to this bill.

Show all 406 →

"Not signed on" means a member has not sponsored or co-sponsored this bill — it does not imply opposition. Members flagged Voted No have a recorded No vote on this bill.

Whip count is in markup. Polling the chamber and every recorded vote this session. Only the first open is slow. It’s instant for you after this. Calling the roll · Tallying · Engrossing

Subjects

housing
Cross-referencing the record. Reading this bill against every other bill in the corpus by meaning, not keywords. Only the first open is slow. It’s instant for you after this. Matching · Ranking · Engrossing

Frequently asked questions

Who sponsors HB 577?
HB 577 is sponsored by Dan McGuire (Republican), Joe Sweeney (Republican), Daniel Innis (Republican), Joe Alexander (Republican), Lisa Mazur (Republican), Keith Murphy (Republican), Jessica Grill (Democrat), Alissandra Murray (Democrat), and Hope Damon (Democrat).
What is the current status of HB 577?
This bill has been enacted into law. Introduced January 16, 2025. Enacted.
Where can I track HB 577?
Track HB 577 free on One Click Politics — get push/email alerts when it moves.

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Last checked for changes 2 months ago · updated continuously

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