Arizona Enacts State Affordability Infrastructure District Legislation, Creating New Framework For Infrastructure Finance

On June 5, Arizona Governor Katie Hobbs signed House Bill 2999 into law, creating a new State Affordability Infrastructure District (SAID) framework under Chapter 40 of Title 48 of the Arizona Revised Statutes. The legislation establishes a new mechanism through which developers, homebuilders, and other project sponsors may finance public infrastructure using tax-exempt bonds and other district financing tools.

The legislation is expected to expand access to infrastructure capital for master-planned communities and other large-scale development projects throughout Arizona. By authorizing districts to issue general obligation bonds, special assessment bonds, and revenue bonds secured by property-based obligations within the district, the SAID framework provides an additional financing option for public improvements without creating obligations for existing taxpayers or municipal general funds.

The new law arrives as Arizona continues to experience significant population growth, housing demand, and infrastructure needs. Proponents of the legislation view the framework as a means of accelerating infrastructure delivery, reducing upfront capital burdens on development projects, lowering housing costs, and supporting housing production across the state.

A Game-Changer for Arizona Developers and Homebuilders

For decades, one of the most persistent barriers to master-planned development in Arizona has been the upfront cost of public infrastructure – roads, water and wastewater systems, stormwater facilities, and public safety facilities – that must be in place before a single home can be built. Developers have often been required to fund substantial infrastructure far in advance of revenue generation, tying up large amounts of capital, slowing absorption, and increasing the costs that ultimately make their way into home prices. Arizona’s existing Community Facilities District framework has sometimes worked, but inconsistent local processes and administrative bottlenecks have left Arizona well behind peer states such as Colorado, Utah, and Texas, with these states outpacing Arizona in special district infrastructure financing by factors of 39x, 37x, and 10x, respectively, on a per-resident basis since 2020.

That gap is especially consequential in Arizona, where affordability has become one of the most pressing economic challenges facing households. An April 2026 report by Common Sense Institute Arizona shows that Arizona is near the bottom nationally on affordability, falling from 33rd in 2019 to 45th in 2025. The new SAID framework is designed to change that trajectory by giving developers and homebuilders a more predictable and efficient way to finance the infrastructure that new housing requires.

Under H.B. 2999, landowners within a master-planned development can form a SAID by petition to the Arizona Finance Authority. Once formed, the district is a political subdivision of the State of Arizona with the authority to issue general obligation bonds, special assessment bonds, and revenue bonds — all secured by property-based obligations borne solely by the land within the district, not by existing Arizona taxpayers. Bond proceeds can be deployed immediately to finance public infrastructure, allowing developers to deliver roads, utilities, and amenities in advance of development rather than in arrears through a reimbursement process, dramatically accelerating project timelines and reducing the carrying costs that ultimately flow through to home prices.

Putting Arizona at the Cutting Edge of Special District Finance

The SAID framework created by H.B. 2999 draws on the most effective features of proven special district models across the country, while incorporating structural innovations that make it uniquely well-suited to Arizona’s policy environment. Key features that distinguish the SAID framework as a national leader include:

Statewide uniformity and certification authority. Unlike many states where special districts are formed by local governments under inconsistent standards, every SAID is formed through and certified by the Arizona Finance Authority on the basis of objective criteria, ensuring financial integrity, statutory compliance, and a consistent experience for developers, lenders, underwriters, and investors statewide.

Landowner-elected board. Unlike Arizona CFDs for which the city council of the municipality in which the district is located serves as the district board ex officio, the board of the SAID is first appointed by the landowners forming the SAID, and thereafter elected through acreage-based voting.

Ability to finance development impact fees. The SAID framework is the only special district statute in Arizona to expressly authorize the use of bond proceeds to advance-pay municipal development impact fees on behalf of landowners, effectively eliminating one of the largest upfront cash-flow burdens in residential development, delivering immediate and reliable fee revenue to municipalities rather than years of piecemeal lot-by-lot collection and reducing the carrying costs that ultimately flow through to home prices.

Built-in transparency and accountability. The legislation requires each district to maintain a permanent, publicly accessible, searchable website with detailed financial disclosures, mandatory standardized disclosure notices to homebuyers in connection with every home sale, and rigorous annual reporting to the Arizona Finance Authority, giving bondholders, property owners, and regulators unprecedented visibility into district operations.

Taxpayer protections woven into the statute. Strict maximum tax rate caps, debt-to-value limitations, and Arizona Finance Authority review requirements ensure that the financial obligations of each district are sustainable and proportionate to the value of the property being served.

What This Means for Arizona’s Housing and Development Markets

The practical implications of the SAID framework for Arizona’s development community are significant. Developers and homebuilders who have struggled to finance infrastructure for large master-planned communities now have access to long-duration, tax-exempt debt that can provide hundreds of millions of dollars in up-front infrastructure capital at costs far below conventional construction lending. Projects that were previously economically marginal – or that required outsized developer equity contributions – become feasible. Communities can be delivered faster, with better infrastructure and at price points more accessible to Arizona homebuyers.

While the SAID framework is tailor-made for large master-planned residential communities, its eligible infrastructure categories and flexible bond structures make it equally powerful for commercial, industrial, and mixed-use development. Industrial projects can use SAIDs to finance roads, rail crossings, rail spurs, and grade separations. Infill and brownfield projects can deploy tax-exempt bond proceeds for environmental remediation and digital infrastructure that would otherwise make projects economically infeasible. Broadband corridors, life sciences campuses, intermodal ports, and tech campuses are all in a position to leverage the SAID framework for low-cost capital to finance horizontal infrastructure. The SAID is not just a homebuilder tool. Rather, it is a statewide infrastructure finance platform capable of accelerating Arizona’s economic development across every sector.

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