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Bill Summary · AB 2166

Summary: AB 2166 (2025-2026) – Multifamily housing development: offsite housing factories: backstop financing

Jurisdiction: California | Bill Type: Amended Assembly Bill | Sponsor: Assembly Member Carrillo (Principal coauthor: Wicks)

Date: Amended in Assembly; amended text March 19, 2026

1) Purpose and intent

  • AB 2166 seeks to establish a state-backed financing mechanism to stabilize and scale California’s offsite housing manufacturing sector (offsite construction factories) in support of multifamily housing production.
  • The bill identifies a market failure: surety companies are reluctant to issue payment and performance bonds to offsite factories due to limited operating history, nontraditional assets, and volatile cash flow. This bonding constraint hampers developers’ ability to use offsite construction, which in turn limits capacity, cost reductions, and housing delivery.
  • The core aim is to create a backstop that reduces tail risk for sureties, enabling them to issue bonds to qualified offsite factories for qualified multifamily projects, thereby accelerating offsite construction and reducing costs over time.

2) Key provisions and changes

  • Creation of the Multifamily Backstop Financing Program (Program)

    • Establishment: A new program within the California Housing Finance Agency (CalHFA), to be activated upon legislative appropriation.
    • Purpose: Provide state-backed credit backstops to surety companies/insurers so they can issue payment and performance bonds to qualified offsite housing factories that serve qualified multifamily projects.

  • Definitions (Chapter 10.5, Health and Safety Code)

    • Agency: California Housing Finance Agency (CalHFA)
    • Program: Multifamily Backstop Financing Program
    • Qualified applicant: A surety company or surety insurer issuing construction bonds
    • Qualified factory: An in-state offsite housing factory (volumetric, panelized, or other) delivering obligations for qualified multifamily projects
    • Qualified multifamily project: Projects in-state, residential-focused (at least two-thirds residential square footage), may include nonresidential uses
    • Tail risk: Risk of low-frequency, high-severity events or extreme outcomes

  • Program mechanics (provisions in 50312)

    • Backstop issuance: Credit backstops may be issued to qualified applicants if used to backstop bonds for qualified factories on qualified multifamily projects.
    • Coverage: The backstop shall cover a specified percentage of the bond value (the percentage is to be determined by the agency; placeholder: “____ percent”).
    • Purpose of backstop: Not a replacement for underwriting; primarily to reduce tail risk. Applicants still determine bond specifics per industry standards.
    • Prioritization and review: Legislative intent to include provisions on how applications are prioritized and reviewed.

  • Regulatory framework

    • CalHFA is authorized to adopt rules and regulations necessary to implement the Chapter.

  • Government structure (Section 50401 amendment)

    • Maintains the current structure: The Department of Housing and Community Development is led by the Director, appointed by the Governor with Senate confirmation; salary aligned with existing Government Code provisions.

3) Who and what is affected

  • Offsite housing factories (in-state) become eligible to receive state-backed backstops to secure bonds.
  • Surety companies and surety insurers that issue construction bonds for offsite multifamily projects could participate in the program.
  • Qualified multifamily projects that utilize offsite construction in California may gain access to more reliable bonding, facilitating faster delivery and potentially lower costs.
  • CalHFA administers the program, subject to annual appropriations and regulatory implementation.

4) Procedural and timing aspects

  • Trigger: The program is established upon legislative appropriation.
  • Implementing actions: CalHFA to adopt rules/regulations necessary to implement the program.
  • Action history indicates multiple readings and committee referrals in 2026 (H. & C.D.), with amendments and re-referral.
  • No new appropriation is specified in the bill text itself; fiscal impact would depend on enacted funding.

Notes

  • The bill explicitly frames this as a policy tool to stabilize and scale offsite construction in California, aiming for long-term reductions in construction costs and expanded housing delivery.
  • The exact percentage coverage of the backstop bonds is to be determined by the agency.

Compiled from official sources — confirm details with the bill’s official record.

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