republic-os/legislation/us/states/co/2021a/sb-21-143.md

---
type: "Bill"
title: "Uniform Collaborative Law Act"
description: "The act enacts the \"Uniform Collaborative Law Act\". The act authorizes a collaborative law process for proceedings arising under family or domestic relations law whereby disputes are resolved without intervention by a court or other tribunal. The act specifies the requirements for a collaborative law participation agreement, including that both sides be represented and advised by collaborative law lawyers, and that communications made during the collaborative law process are confidential and may not be used in later proceedings except in specified situations.(Note: This summary applies to this bill as enacted.)"
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2021A"
identifier: "SB 21-143"
citation: "Colorado SB 21-143 (2021A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Bob Gardner", "Kerry Tipper", "Marc Snyder"]
version_count: 9
action_count: 15
vote_count: 2
first_action: "2021-03-01T07:00:00+00:00"
last_action: "2021-05-17T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/2155c1bc-1dc6-4016-b09b-89453dc7e4ed"
source_url: "http://leg.colorado.gov/bills/sb21-143"
source_hash: "4d98786584ea4b2089d3f7e63f2db37d9fcdf75636c182872d159024a25e6106"
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-co"]
---

# Colorado SB 21-143 (2021A) — Uniform Collaborative Law Act

The act enacts the "Uniform Collaborative Law Act". The act authorizes a collaborative law process for proceedings arising under family or domestic relations law whereby disputes are resolved without intervention by a court or other tribunal. The act specifies the requirements for a collaborative law participation agreement, including that both sides be represented and advised by collaborative law lawyers, and that communications made during the collaborative law process are confidential and may not be used in later proceedings except in specified situations.(Note: This summary applies to this bill as enacted.)

## Version chain

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

1. **Committee Amendment** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/2021a_sb143_h_jud_001.pdf)
2. **Engrossed (03/31/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_143_en2.pdf)
3. **Final Act (05/11/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_143_enr.pdf)
4. **Introduced (03/01/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_143_01.pdf)
5. **PA1 (03/25/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_143sjud_01.pdf)
6. **Reengrossed (04/01/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_143_ren.pdf)
7. **Rerevised (05/04/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_143_rer.pdf)
8. **Revised (04/30/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2021A/bills/2021a_143_rev.pdf)
9. **Signed Act (05/17/2021)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/2021a_143_signed.pdf)

## Votes

- BILL — **35–0** (pass) · upper
- BILL — **62–1** (pass) · lower

## Sponsors

- Bob Gardner — primary (person)
- Kerry Tipper — primary (person)
- Marc Snyder — primary (person)

## Timeline

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

- **2021-05-17T06:00:00+00:00** Governor Signed `executive-signature`
- **2021-05-11T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2021-05-11T06:00:00+00:00** Signed by the Speaker of the House
- **2021-05-10T06:00:00+00:00** Signed by the President of the Senate
- **2021-05-04T06:00:00+00:00** House Third Reading Passed - No Amendments `passage, reading-3`
- **2021-05-03T06:00:00+00:00** House Third Reading Laid Over Daily - No Amendments
- **2021-04-30T06:00:00+00:00** House Second Reading Passed - No Amendments `reading-2`
- **2021-04-27T06:00:00+00:00** House Committee on Judiciary Refer Unamended to House Committee of the Whole `committee-passage, referral-committee`
- **2021-04-01T06:00:00+00:00** Introduced In House - Assigned to Judiciary `introduction`
- **2021-04-01T06:00:00+00:00** Senate Third Reading Passed - No Amendments `passage, reading-3`
- **2021-03-31T06:00:00+00:00** Senate Second Reading Passed with Amendments - Committee, Floor `reading-2`
- **2021-03-29T06:00:00+00:00** Senate Second Reading Laid Over Daily - No Amendments
- **2021-03-26T06:00:00+00:00** Senate Second Reading Laid Over Daily - No Amendments
- **2021-03-24T06:00:00+00:00** Senate Committee on Judiciary Refer Amended - Consent Calendar to Senate Committee of the Whole `committee-passage`
- **2021-03-01T07:00:00+00:00** Introduced In Senate - Assigned to Judiciary `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/2155c1bc-1dc6-4016-b09b-89453dc7e4ed`. Confidence: reported (aggregated from official Colorado legislature records).