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California SB 606 requires detailed plans to reach 'functional zero' for unsheltered homelessness

Mandates new housing and finance assessments, program inventories, and local land-use disclosures for applicants to the HHAP program.

The Brief

SB 606 (Functional Zero Unsheltered Act) amends the Homeless Housing, Assistance, and Prevention (HHAP) reporting requirements to require jurisdictions applying for program funds to submit a comprehensive assessment of what it will take to reach and maintain “functional zero unsheltered.” The bill defines key terms and, starting with the next required regional plan update or the seventh round of HHAP allocations, compels applicants to provide both an inventory-driven housing needs analysis and a multi-part financial model covering capital, operations, rental assistance, and services.

The statute also forces transparent accounting of existing federal, state, and local homelessness programs (including funding levels and client counts disaggregated by race and gender), metrics on interim interventions (beds, length of stay, exit rates), and a checklist of local land-use steps taken (shelter crisis declarations, adoption of Appendix P, zoning and fee waivers, and appeals practices). The new requirements aim to make resource gaps visible and tie planning more tightly to measurable capacity to house unsheltered people, but they also create substantial analytic and administrative obligations for applicants and the state agency that will review them.

At a Glance

What It Does

The bill requires HHAP applicants to submit a structured assessment showing the number and types of housing units needed to reach functional zero unsheltered, plus a financial model covering capital, operating, rental assistance, and service costs. It also mandates a statewide inventory of permanent housing and interim interventions and specific disclosures about local land‑use actions that affect project delivery.

Who It Affects

Counties, Continuums of Care, and regional entities that apply for HHAP funds; small cities within those regions; nonprofit service providers and housing developers who must supply program and client data; and the state agency that evaluates applications.

Why It Matters

The reporting package converts the abstract goal of 'functional zero' into concrete, fundable inputs (units, dollars, program slots), which can reshape how HHAP dollars are allocated and prioritized. It also exposes data gaps that could change funding and technical assistance priorities statewide.

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What This Bill Actually Does

SB 606 creates a legal requirement that jurisdictions seeking HHAP money show, in measurable terms, what it would take to eliminate unsheltered homelessness in their area. The bill gives working definitions for 'functional zero' and 'functional zero unsheltered' so applicants must connect planning to a quantifiable target: having enough housing options to accommodate the unsheltered chronically homeless population identified in the latest point-in-time count.

The heart of the new obligation is a two-part assessment. One part must estimate the number and mix of housing units needed to reach functional zero.

The other part is a financial model that spells out capital needs for building housing and interim options, projected operating subsidies for project-based solutions, rental assistance to engage private landlords, and services required to move and keep people in permanent housing. To ground those calculations, applicants must inventory existing federal, state, and local programs—reporting annual funding levels, numbers served, program types, and any time limits—disaggregated by race and gender where data exist.SB 606 also expands the data the state will collect about interim interventions: year-round shelter bed counts, average length of stay, and exit rates to permanent housing.

Applicants must analyze gaps in interim interventions and estimate funding needs to create them, explicitly considering ideal lengths of stay. Finally, the bill asks applicants to report on specific local policy steps that affect project delivery—shelter crisis declarations, whether Appendix P or local equivalents are adopted, reductions in discretionary approvals, zoning or fee waivers, and whether affordable housing projects still face appeals despite ministerial approvals—and requires regions to show how they included small cities in planning.Taken together, the statute creates a single, data-rich submission designed to link observed service capacity and local policy barriers to the funding requests and strategies jurisdictions present for HHAP allocations.

The bill does not specify enforcement mechanisms or penalties for missing data, which leaves important operational questions to the implementing agency.

The Five Things You Need to Know

1

Applies beginning with the next regional homelessness plan update or 'round 7' of HHAP: applicants must provide enhanced reporting for all future rounds.

2

Requires an assessment that quantifies the number and types of housing units needed to achieve and maintain 'functional zero unsheltered' using the most recent point-in-time count.

3

Mandates a financial model covering four categories: capital for permanent and interim housing, operating subsidies, rental assistance for private-market units, and service costs to move and keep people housed.

4

For each federal, state, and local program, applicants must report annual funding, the number of people served and program types disaggregated by race and gender, program length-of-stay limitations, and reasons for any missing data.

5

Obliges applicants to disclose local land-use actions (shelter crisis declarations, adoption of Appendix P or variations, reductions in discretionary approvals, zoning/fee waivers, and appeal practices) and to demonstrate inclusion of small cities in regional plans.

Section-by-Section Breakdown

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Section 50224(a)

Short title: Functional Zero Unsheltered Act

This subsection gives the statute a name for citation. It signals legislative intent to center the statute on achieving a measurable milestone—'functional zero'—rather than prescribing a single operational model. Naming matters because it frames subsequent interpretive questions about what evidence applicants must produce.

Section 50224(b)

Key definitions: functional zero, functional zero unsheltered, small cities

The bill defines 'functional zero' as homelessness being rare and brief and rehousing occurring quickly into housing without limits on length of stay or into permanent housing. 'Functional zero unsheltered' is tied to having sufficient housing options to accommodate a jurisdiction's unsheltered, chronically homeless population per the most recent PIT count. It also creates a working definition of 'small cities' as those not applying directly for HHAP, which matters because later reporting duties explicitly require inclusion of these jurisdictions in regional plans.

Section 50224(c) (trigger and scope)

When the new reporting is required and its scope

The new reporting obligations kick in with either the next required regional homelessness action plan update under Section 50233 or the next round of HHAP applications (noted as round 7). The statute layers these new contents onto existing data requirements from Sections 50221–50223, expanding the baseline submission into a comprehensive needs-and-capacity package for all rounds going forward.

3 more sections
Section 50224(c)(1)

Housing-unit needs assessment

Applicants must prepare an assessment that at minimum analyzes the number of housing units of all types needed to achieve functional zero within their jurisdiction. That forces planners to translate population-level PIT data into unit-level targets across categories (e.g., supportive housing, permanent affordable units, rapid rehousing), which will shape capital requests and rank-order project priorities in applications.

Section 50224(c)(2)

Financial model and program inventory

This subsection requires a financial model that quantifies capital, operating, rental assistance, and service costs and ties those costs to the unit and intervention needs identified. To support the model, applicants must identify federal, state, and local programs that provide housing or services and, where available, report yearly funding amounts, populations served, program types, length-of-stay limits, and any data gaps. The statute also directs statewide and regional counts of permanent housing opportunities and a detailed analysis of interim interventions (year-round bed counts, average lengths of stay, and exit rates), which are inputs into estimating funding and capacity shortfalls.

Section 50224(c)(3)–(4)

Local land-use disclosures and inclusion of small cities

Applicants must report what local steps they have taken to accelerate delivery of interim and permanent housing: whether a shelter crisis declaration is in effect and Appendix P (or local equivalents) has been adopted; whether discretionary approvals have been reduced; whether zoning and local fees have been waived; and whether appeals processes still allow challenges to projects designated 'by right.' The statute also mandates that regional plans demonstrate explicit outreach to and inclusion of small cities, making interjurisdictional coordination a measurable component of HHAP submissions.

At scale

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Who Benefits and Who Bears the Cost

Every bill creates winners and losers. Here's who stands to gain and who bears the cost.

Who Benefits

  • People experiencing unsheltered homelessness — The bill creates an obligation for jurisdictions to plan specifically for the unsheltered chronically homeless population, which could channel resources toward permanent housing, rental assistance, and supportive services tied to measurable housing targets.
  • State policymakers and funders — A standardized inventory and financial model gives the state better visibility into where gaps exist and where HHAP dollars can be leveraged, improving prioritization and technical-assistance targeting.
  • Regional planners and Continuums of Care — Jurisdictions with the analytic capacity gain a clearer justification for capital and operating requests, strengthening applications and project pipelines by linking funding requests to quantified needs.

Who Bears the Cost

  • Local governments and CoCs applying for HHAP funds — They must produce detailed housing-unit analyses, multi-part financial models, and program inventories with disaggregated client data, which will require staff time, consultant contracts, and new data collection systems.
  • Nonprofit service providers and smaller jurisdictions — These entities may be required to supply client-level and program data (race/gender disaggregation, lengths of stay, exits) that they do not currently track, imposing reporting burdens without direct funding for compliance.
  • The state agency administering HHAP (e.g., HCD) — Reviewing enriched submissions and reconciling data gaps increases administrative workload; the bill contains no appropriation for added review capacity or technical assistance to under-resourced applicants.

Key Issues

The Core Tension

The bill balances a legitimate need for rigorous, standardized planning to close housing and service gaps against the practical limits of local capacity and imperfect data: pressing jurisdictions to produce definitive, disaggregated inventories and financial models may improve transparency and targeting, but it also risks penalizing under-resourced areas and producing misleading conclusions if the underlying data are incomplete or inaccurate.

SB 606 pushes jurisdictions to turn the aspirational goal of 'functional zero' into concrete capacity and funding requests, but it does so without resolving several implementation questions that will determine whether the requirement improves outcomes. First, the bill relies heavily on point-in-time counts and existing program data to size needs.

PIT counts undercount unsheltered populations and are highly sensitive to methodology and timing; using them as the primary denominator risks underestimating true need or creating perverse incentives to influence counts. Second, the statute demands race- and gender-disaggregated reporting and detailed program financials for federal, state, and local programs, yet it provides no mechanism to reconcile inconsistent data systems or to fund the additional data collection that smaller providers will need.

There is also a drafting and scope tension within the statute. The bill contains overlapping language about an 'assessment' in consecutive paragraphs, which could create ambiguity about whether two distinct submissions are needed or whether one integrated analysis suffices.

The statute sets no compliance standard, deadline precision, or remedies for incomplete submissions, leaving the implementing agency to decide how strictly to enforce data completeness and how to treat applicants who cannot produce full inventories. Finally, requiring jurisdictional disclosures about zoning waivers, fee waivers, and appeals will surface politically fraught local decisions; the statute assumes jurisdictions can and will make those changes, but it does not address legal constraints (e.g., local charters, CEQA litigation risk) or provide incentives to offset political costs.

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