5a13be122b
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
102 lines
8.8 KiB
Markdown
102 lines
8.8 KiB
Markdown
---
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type: "Bill"
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title: "Residential density and affordability."
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description: "The Planning and Zoning Law requires a city, county, or city and county to ensure that its housing element inventory, as described, can accommodate its share of the regional housing need throughout the planning period. The law also prohibits a city, county, or city and county from reducing, requiring, or permitting the reduction of the residential density to a lower residential density that is below the density that was utilized by the Department of Housing and Community Development in determining compliance with housing element law, unless the city, county, or city and county makes written findings supported by substantial evidence that the reduction is consistent with the adopted general plan, including the housing element, and that the remaining sites identified in the housing element are adequate to accommodate the jurisdiction's share of the regional housing need. The city, county, or city and county may reduce the residential density for a parcel if it identifies sufficient sites, as prescribed, so that there is no net loss of residential unit capacity."
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jurisdiction: "us/states/ca"
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legislature: "California Legislature"
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session: "20172018"
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identifier: "SB 166"
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citation: "California SB 166 (20172018)"
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classification: ["bill"]
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subjects: ["Residential density and affordability."]
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status: "enacted"
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primary_sponsors: ["Skinner"]
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version_count: 8
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action_count: 31
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vote_count: 7
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first_action: "2017-01-23"
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last_action: "2017-09-29"
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source: "openstates"
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source_identifier: "ocd-bill/8ccf2cf2-3cc9-447f-9b2c-d42c5d72a7b3"
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source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201720180SB166"
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source_hash: "65da0fc7ea18d1129787d8db92da14669b3158d3ba750379b7d952f1d81bb0dd"
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vintage: "2026-07-01"
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source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
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retrieved_at: "2026-07-06"
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confidence: "reported"
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tags: ["legislation", "bill", "us-ca"]
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---
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# California SB 166 (20172018) — Residential density and affordability.
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The Planning and Zoning Law requires a city, county, or city and county to ensure that its housing element inventory, as described, can accommodate its share of the regional housing need throughout the planning period. The law also prohibits a city, county, or city and county from reducing, requiring, or permitting the reduction of the residential density to a lower residential density that is below the density that was utilized by the Department of Housing and Community Development in determining compliance with housing element law, unless the city, county, or city and county makes written findings supported by substantial evidence that the reduction is consistent with the adopted general plan, including the housing element, and that the remaining sites identified in the housing element are adequate to accommodate the jurisdiction's share of the regional housing need. The city, county, or city and county may reduce the residential density for a parcel if it identifies sufficient sites, as prescribed, so that there is no net loss of residential unit capacity.
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## Version chain
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The bill's text revisions, in order — the diff chain from filing to enrollment.
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1. **01/23/17 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180SB166&version=20170SB16699INT)
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2. **03/01/17 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180SB166&version=20170SB16698AMD)
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3. **04/19/17 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180SB166&version=20170SB16697AMD)
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4. **05/02/17 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180SB166&version=20170SB16696AMD)
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5. **07/03/17 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180SB166&version=20170SB16695AMD)
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6. **09/29/17 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180SB166&version=20170SB16693CHP)
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7. **SB166** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201720180SB166)
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8. **09/20/17 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180SB166&version=20170SB16694ENR)
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## Votes
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- Do pass and be re-referred to the Committee on [Rules] — **5–2** (pass) · lower
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- Do pass as amended, but first amend, and re-refer to the Committee on [Appropriations] — **5–1** (pass) · upper
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- Unfinished Business SB166 Skinner et al. Concurrence — **24–11** (pass) · upper
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- Do pass, but first be re-referred to the Committee on [Governance and Finance] — **9–1** (pass) · upper
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- 3rd Reading — **28–12** (pass) · upper
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- SB 166 Skinner Senate Third Reading By BLOOM — **54–24** (pass) · lower
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- Do pass and be re-referred to the Committee on [Housing and Community Development] — **6–2** (pass) · lower
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## Sponsors
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- Skinner — primary (person)
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- Gloria — coauthor (person)
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## Timeline
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The legislative action history — every referral, reading, and vote.
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- **2017-01-23** Introduced. Read first time. To Com. on RLS. for assignment. To print. `introduction, reading-1`
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- **2017-01-24** From printer. May be acted upon on or after February 23.
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- **2017-02-02** Referred to Com. on JUD. `referral-committee`
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- **2017-03-01** From committee with author's amendments. Read second time and amended. Re-referred to Com. on JUD. `reading-2, referral-committee, amendment-passage, committee-passage, reading-1`
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- **2017-03-02** Withdrawn from committee.
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- **2017-03-02** Re-referred to Com. on RLS. `referral-committee`
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- **2017-03-02** Re-referred to Coms. on T. & H. and GOV. & F. `referral-committee`
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- **2017-03-03** Set for hearing March 7.
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- **2017-03-08** From committee: Do pass and re-refer to Com. on GOV. & F. (Ayes 9. Noes 1. Page 327.) (March 7). Re-referred to Com. on GOV. & F. `committee-passage-favorable, committee-passage, referral-committee`
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- **2017-04-07** Set for hearing April 26.
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- **2017-04-19** From committee with author's amendments. Read second time and amended. Re-referred to Com. on GOV. & F. `reading-2, referral-committee, amendment-passage, committee-passage, reading-1`
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- **2017-05-01** From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 5. Noes 1. Page 884.) (April 26). `committee-passage-favorable, committee-passage, amendment-passage`
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- **2017-05-02** Read second time and amended. Re-referred to Com. on APPR. `amendment-passage, reading-2, referral-committee, reading-1`
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- **2017-05-04** Set for hearing May 15.
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- **2017-05-15** From committee: Be ordered to second reading pursuant to Senate Rule 28.8. `committee-passage, reading-2`
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- **2017-05-16** Read second time. Ordered to third reading. `reading-2, reading-1`
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- **2017-06-01** Read third time. Passed. (Ayes 28. Noes 12. Page 1384.) Ordered to the Assembly. `reading-3, passage, reading-1`
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- **2017-06-01** In Assembly. Read first time. Held at Desk. `reading-1`
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- **2017-06-15** Referred to Coms. on L. GOV. and H. & C.D. `referral-committee`
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- **2017-06-29** From committee: Do pass and re-refer to Com. on H. & C.D. (Ayes 6. Noes 2.) (June 28). Re-referred to Com. on H. & C.D. `committee-passage-favorable, committee-passage, referral-committee`
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- **2017-07-03** From committee with author's amendments. Read second time and amended. Re-referred to Com. on H. & C.D. `reading-2, referral-committee, amendment-passage, committee-passage, reading-1`
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- **2017-07-12** From committee: Do pass and re-refer to Com. on RLS. (Ayes 5. Noes 2.) (July 12). Re-referred to Com. on RLS. `committee-passage-favorable, committee-passage, referral-committee`
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- **2017-08-31** Assembly Rule 96 suspended. (Ayes 51. Noes 23. Page 2826.)
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- **2017-08-31** Withdrawn from committee.
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- **2017-08-31** Ordered to third reading.
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- **2017-09-14** Read third time. Passed. (Ayes 54. Noes 24. Page 3418.) Ordered to the Senate. `reading-3, passage, reading-1`
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- **2017-09-15** In Senate. Concurrence in Assembly amendments pending.
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- **2017-09-15** Assembly amendments concurred in. (Ayes 24. Noes 11. Page 2959.) Ordered to engrossing and enrolling. `committee-passage-favorable, amendment-passage`
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- **2017-09-22** Enrolled and presented to the Governor at 3 p.m.
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- **2017-09-29** Approved by the Governor. `executive-signature`
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- **2017-09-29** Chaptered by Secretary of State. Chapter 367, Statutes of 2017.
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## Source
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OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/8ccf2cf2-3cc9-447f-9b2c-d42c5d72a7b3`. Confidence: reported (aggregated from official California legislature records).
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