Why Advanced 1031 Knowledge Matters More Than Ever in Phoenix
The Phoenix metropolitan area has experienced one of the most dramatic real estate appreciation cycles in modern American history. An investor who purchased a Gilbert rental home for $220,000 in 2013 may be sitting on a property now worth $520,000 or more. A commercial strip center purchased in Chandler in 2012 for $900,000 might appraise today at $2.4 million. Across the valley, from Queen Creek to Peoria, long-term landlords and savvy investors have accumulated enormous paper wealth — and with it, enormous deferred tax liabilities.
Without a properly executed 1031 exchange, selling any of those properties triggers a cascade of taxes: federal long-term capital gains at 15% or 20% depending on your income bracket, the 3.8% Net Investment Income Tax (NIIT) if your modified adjusted gross income exceeds the threshold ($200,000 single / $250,000 married), 25% depreciation recapture on every dollar you previously deducted, and Arizona's flat 2.5% state income tax on the entire recognized gain. On a million-dollar gain, that can easily exceed $250,000 in taxes due in a single year.
A correctly structured 1031 exchange under Internal Revenue Code §1031 defers all of that tax — potentially forever. Under current law (which has not changed as of mid-2026), when you die holding 1031-exchanged property, your heirs receive a stepped-up basis to fair market value on the date of death, effectively eliminating all deferred taxes permanently. This "die with the gain" strategy is one of the most powerful wealth-transfer tools available to real estate investors, and it begins with a flawless exchange.
But 1031 exchanges are also one of the easiest ways to accidentally trigger a massive, unexpected tax bill. Missing the 45-day identification deadline by a single day, selecting a disqualified intermediary, or misunderstanding the boot rules can cost you the entire tax deferral. This guide covers everything beyond the basics — the strategies, the pitfalls, and the Arizona-specific nuances that every Phoenix metro investor needs to understand before their next closing.
The Basics: A Quick Framework Before Going Deep
For readers who need a foundation before diving into advanced strategies, here is the core framework. IRC §1031 allows a taxpayer to defer capital gains taxes when they sell (relinquish) investment real property and reinvest the proceeds into like-kind replacement real property, following strict rules. The key word is "defer" — the tax is postponed, not forgiven (unless you die holding the property or structure certain charitable exits).
What Qualifies as Like-Kind Property in Arizona
In Arizona, the like-kind requirement is broadly interpreted for real property. A single-family rental home qualifies to exchange into: a duplex, a small apartment building, a commercial office building, a retail strip center, raw land, a self-storage facility, a mobile home park, a net-lease property, or even a fractional interest in a larger institutional property. The property does not need to be in the same city or even in Arizona — a Phoenix investor can sell a Gilbert SFR and buy a Dallas industrial building. What does NOT qualify: stocks, bonds, partnership interests, your personal residence (though §121 exclusion may help there separately), or personal property like vehicles or equipment.
The Core Timeline
Engage a Qualified Intermediary Before Closing
Your exchange agreement must be in place and your QI assigned BEFORE you close on the relinquished property. If you receive the funds personally — even briefly — the exchange is disqualified. The QI must be named in the purchase contract addendum (assignment of contract rights to QI).
Close on Relinquished Property (Day 0)
Proceeds go directly from escrow to the QI's exchange account. In Arizona's dry-funding system, closing, recording, and funding all happen the same day — confirm with your QI that the wire timing is coordinated correctly.
Identify Replacement Property by Day 45 (Midnight)
Written, signed identification delivered to the QI or replacement property seller. No extensions for any reason — not holidays, not weekends, not natural disasters (unless the IRS issues a specific disaster relief extension for your county).
Close on Replacement Property by Day 180
Must close (and in Arizona, record) on all identified replacement properties within 180 days of the relinquished property closing. Note: if your tax return is due before Day 180, you must file an extension to preserve the full 180 days.
Report on IRS Form 8824
File IRS Form 8824 (Like-Kind Exchanges) with your federal return for the year the exchange began. Your CPA handles the carryover basis calculation, depreciation tracking, and any boot recognition.
The Qualified Intermediary: Your Most Critical Choice
Of all the decisions in a 1031 exchange, selecting your Qualified Intermediary (QI) carries the highest stakes. A failed QI can make your exchange worthless — and there is no federal license or regulator for this role. This is one of the most under-appreciated risks in real estate investing.
QI Regulation (Or the Lack Thereof)
At the federal level, the IRS defines who is disqualified from being a QI (your agent, attorney, CPA, employer, or related party within the prior 2 years) but does not license or regulate QIs. Arizona has no state QI licensing law. This means anyone can legally set up a QI business — and some have absconded with exchange funds. Several high-profile QI insolvencies in the 2000s and 2010s cost investors tens of millions of dollars in exchange funds that were commingled with operating accounts and lost when the QI became insolvent.
⚠ Critical Risk: QI Insolvency
If your QI commingles exchange funds with their own operating capital and becomes insolvent, you may lose your exchange proceeds AND owe the full capital gains tax on the sale. Your exchange funds would be at risk as an unsecured creditor in bankruptcy. Always confirm that your QI holds funds in segregated, FDIC-insured accounts in your name (not the QI's name) under a Qualified Exchange Accommodation Arrangement (QEAA) or similar structure.
How to Vet a QI
The safest QIs are divisions of title insurance companies (Fidelity National Title 1031 Services, First American Exchange Company, Stewart Title 1031) or large, well-capitalized national firms that have been in business for decades. Look for:
- Segregated accounts: Your exchange funds held in a separate escrow account in your name, not commingled with the QI's operational funds
- FDIC insurance per-account: Confirm the account structure provides full FDIC coverage on your funds
- Fidelity bonding and E&O insurance: Professional liability insurance and bonding that would pay out if the QI commits fraud or negligence
- State escrow licensing: Some states require QIs to hold escrow licenses — Arizona does not, but QIs licensed in other states may offer a higher standard
- Track record: How many years in business? How many exchanges completed? References from Arizona CPAs and real estate attorneys?
- QI fees: Typically $750–$1,500 for a standard forward exchange, plus wire fees. Reverse exchanges cost $3,000–$8,000+. Be skeptical of very low fees — they may signal inexperience or poor infrastructure.
Reputable national QIs serving Arizona investors include: Asset Preservation Inc. (API), IPX1031, Exeter 1031 Exchange Services, First American Exchange Company, and Fidelity National 1031 Exchange Services. Your exchange-experienced real estate attorney or CPA should be able to provide referrals to QIs they have vetted personally.
Exchange Agreement Requirements
Your QI must provide a properly drafted Exchange Agreement, and your purchase contract for the relinquished property must contain an assignment clause transferring your rights in the contract to the QI. The closing escrow instructions must direct proceeds to the QI, not to you. Any defect in this assignment language — including vague or missing assignment clauses — can disqualify the exchange. In Arizona, review the purchase contract addendum with your exchange attorney before signing, not after.
Identification Rules — The Advanced Analysis
The 45-day identification window is ironclad, but the rules about what you can identify are more flexible than most investors realize. There are three identification rules, and you only need to comply with one of them.
The Three Identification Rules
Identify up to 3 properties of any value, regardless of their combined FMV relative to the relinquished property. Most common rule used. Works well when you have 2-3 strong candidates lined up.
Identify any number of properties, as long as the total FMV of all identified properties does not exceed 200% of the relinquished property's FMV. Useful when you have 4+ candidates and they vary widely in price.
Identify any number of properties of any value, but you must actually acquire at least 95% of the total FMV of all identified properties. Rarely used — extremely difficult to achieve in practice. Risk of full failure is high.
Identification Format Requirements
Your identification must be: (1) in writing, (2) signed by you, (3) unambiguously describing the replacement property (street address or legal description sufficient; general location like "a property in north Scottsdale" does NOT qualify), and (4) delivered to either your QI or the seller of the replacement property before midnight of Day 45.
You can revoke an identification and submit a new one any time within the 45-day window. Once Day 45 passes, however, you cannot add, change, or revoke identifications — you are locked into whatever was properly submitted.
📝 Common Identification Mistakes That Fail Exchanges
- Vague descriptions: "a 4-bedroom house near Scottsdale" — fails; must be a specific address or legal description
- Missing signature: identification document not signed by the taxpayer
- Delivered to wrong party: sent to your agent, your attorney, or the title company instead of the QI or replacement seller
- Identifying more than 3 properties without satisfying the 200% rule
- Identifying a property that is later determined to be disqualified (related party without proper holding period)
- Email delivery without confirmation of receipt — always use certified mail or QI portal with timestamp confirmation
Boot: The Silent Exchange Killer
Boot is the term for taxable proceeds received in an otherwise tax-deferred exchange. Unlike a failed exchange (where everything is taxable), boot creates a partial exchange — you defer taxes on the non-boot portion but recognize gain on the boot portion in the year of exchange. Understanding boot is essential to maximizing your tax deferral.
Types of Boot
Cash Boot: This is the most common. If your net sale proceeds (after paying off the mortgage and exchange costs) exceed the purchase price of your replacement property, the difference is cash boot — taxable in the year of exchange. Example: you sell for $800,000 net, buy a replacement for $720,000, and the $80,000 remainder is cash boot.
Mortgage Boot (Debt Relief Boot): If the mortgage on the relinquished property you paid off exceeds the mortgage on the replacement property you assume, the net debt reduction is treated as boot. Example: you owed $400,000 on the sold property, but only take on $300,000 in debt on the replacement — the $100,000 debt reduction is mortgage boot. You can offset mortgage boot by adding cash to the purchase.
Personal Property Boot: If any personal property is included in the sale proceeds, that is boot (since the Tax Cuts and Jobs Act of 2017, personal property no longer qualifies for like-kind exchange treatment). In Arizona, watch for: appliances listed separately in the purchase contract, water softeners, removable solar panel systems, above-ground pools, or any separately valued personal property. In practice, many agents include these in the real property price — but if they are separately valued in the contract and proceeds flow through the QI, they may create boot.
How to Eliminate Boot
The rule is simple: to achieve complete tax deferral, you must (1) reinvest all net exchange proceeds into the replacement property and (2) maintain debt equal to or greater than the debt on the relinquished property (or substitute cash to cover any debt shortfall). In practice, this means buying up in value and not pulling any cash out of the exchange.
Boot Calculation Example: AZ Investor Scenario
Depreciation Recapture: The Boot Within the Tax
Section 1250 depreciation recapture is taxed at a maximum federal rate of 25%, and this applies regardless of how long you held the property or what bracket you are in. Critically, a 1031 exchange defers depreciation recapture — it does not eliminate it. Your carryover basis for the replacement property includes the accumulated depreciation from the relinquished property, so the recapture liability follows the property through every exchange until a taxable event (sale without exchange) or death (stepped-up basis elimination).
Depreciation Math in Arizona Exchanges
For Arizona investors who have held property for many years or who have exchanged multiple times, depreciation tracking becomes increasingly complex. Here is the framework your CPA should be applying.
Carryover Basis and Dual Depreciation Schedules
When you complete a 1031 exchange, you carry your adjusted basis (original cost minus accumulated depreciation) from the relinquished property to the replacement property. If you pay more for the replacement property than your adjusted basis in the relinquished property, the excess creates a new, separate depreciation schedule. The result is that after an exchange, you are depreciating two overlapping schedules simultaneously.
Schedule 1 (Carryover): The remaining years on the original depreciation schedule from the relinquished property, continuing at the same annual amount. For residential rental property (27.5-year straight-line), if you had 11 years of depreciation remaining, that schedule continues for 11 more years.
Schedule 2 (Excess Basis): Any amount you paid above your adjusted basis in the relinquished property starts a fresh 27.5-year (residential) or 39-year (commercial) straight-line depreciation schedule beginning in the year of acquisition of the replacement property.
Dual Depreciation Calculation Example
Cost Segregation on Replacement Properties
One of the most powerful tools for AZ investors in the year of acquisition is a cost segregation study on the replacement property. Cost segregation identifies components of the building that qualify for shorter-life depreciation (5-year, 7-year, or 15-year property) rather than 27.5- or 39-year depreciation. With bonus depreciation (currently 40% in 2026 under current law, phasing down from 100%), you can write off a significant portion of those shorter-life components immediately in the year of acquisition.
For an AZ investor who exchanges into a $1.5M apartment building or commercial property, a cost segregation study typically costs $8,000–$18,000 but can identify $200,000–$500,000 in accelerated depreciation. The net effect is substantial additional tax deductions in Year 1 of ownership of the replacement property, offsetting passive income and (if you qualify as a Real Estate Professional under IRC §469) even active income.
Reverse Exchanges: Buying Before You Sell
A standard forward exchange requires you to sell first, then buy. But in the hyper-competitive Phoenix market of 2026, investors frequently find the perfect replacement property before they have a buyer for their relinquished property. The reverse exchange structure solves this problem — at a higher cost and complexity.
How Reverse Exchanges Work
In a reverse exchange, an Exchange Accommodation Titleholder (EAT) — a single-purpose LLC formed and controlled by your QI — takes title to the replacement property and holds it while you sell your relinquished property. The safe harbor rules under Revenue Procedure 2000-37 allow this structure for up to 180 days. There are two variants: the "park the replacement" structure (EAT holds the replacement property while you sell the relinquished) and the "park the relinquished" structure (EAT takes title to the relinquished property while you acquire the replacement).
Reverse Exchange Timeline
EAT Acquires Replacement Property (Day 0)
Your QI forms an EAT LLC that closes on and takes title to the replacement property. You provide the purchase funds (cash or financing in the EAT's name). Note: many lenders will not lend to an EAT entity — confirm lender approval before structuring this as a reverse exchange.
You Sell Relinquished Property (Days 1-180)
You have up to 180 days from when the EAT acquired the replacement property to close on the sale of your relinquished property. Proceeds go to QI exchange account. You must identify the relinquished property (yes, you identify the property you are selling) within 45 days of the EAT acquisition.
Exchange Completion
Upon sale of relinquished property, the EAT deeds the replacement property to you. The exchange is complete. All 180-day and 45-day clocks run from the EAT acquisition date.
Reverse Exchange Costs and Considerations in Arizona
Reverse exchanges cost significantly more than forward exchanges: QI fees range from $3,000–$8,000+, plus additional title insurance costs for the double transfer (into EAT and then from EAT to you), potential transfer taxes (though Arizona has no state transfer tax, Maricopa County has a document recording fee), and lender fees if financing is involved in the EAT structure. Despite the added cost, reverse exchanges save significant deals when an investor identifies a clear acquisition target in a competitive market.
AZ-specific challenge: Maricopa County permit timelines, which can run 3–6 months for new construction, make build-to-suit reverse exchanges extremely risky. Investors using reverse exchanges for pre-construction properties should confirm that the replacement property will close and be ready to occupy (or lease) within the 180-day window. Properties already under construction or in final phases are safer candidates than ground-up new starts.
Improvement/Construction Exchanges (Build-to-Suit)
An improvement exchange (sometimes called a "build-to-suit" or "construction exchange") allows you to exchange into a property that needs to be built or significantly improved, with the construction happening during the exchange period. This is particularly relevant in the Phoenix metro, where TSMC's $65 billion semiconductor campus in north Phoenix, Intel's Chandler facilities, and dozens of master-planned communities like Vistancia, Verrado, and Eastmark are generating enormous demand for newly built residential and commercial properties adjacent to employment centers.
How Build-to-Suit Exchanges Work
The EAT takes title to the land or the property to be improved. Construction or improvements are completed on the property while it is held by the EAT, all within the 180-day exchange period. At the end of the exchange, the EAT deeds the completed (or improved) property to you. The key rule: improvements must be "placed in service" (in a usable state, not just started) within the 180-day window. Exchange proceeds not spent on the property by Day 180 become cash boot — taxable income.
🏛 AZ Opportunity: TSMC Corridor Build-to-Suit
Investors with appreciated Phoenix or Scottsdale properties are using build-to-suit exchanges to acquire ground-up residential rentals near TSMC's Fab 21 campus in the I-17/Loop 303 corridor of north Phoenix. TSMC's Phase 2 construction (2nm chips) is driving demand for workforce housing in Deer Valley, Happy Valley, and surrounding areas. A build-to-suit exchange allows you to defer gains from an older property while building new workforce rental inventory precisely where demand is highest. The challenge: 180 days is tight for new construction in Maricopa County — look for lots with pre-approved plans or modular/manufactured home options that can close out faster.
Delaware Statutory Trusts: The AZ Investor's Passive Exit Strategy
The Delaware Statutory Trust (DST) has emerged as one of the most popular 1031 exchange vehicles for Arizona investors who want to defer taxes but exit active management. A DST is a legal entity that holds institutional-grade real property — typically Class A multifamily apartments, industrial warehouses, net-lease retail, or medical office buildings — and sells fractional beneficial interests to investors who qualify as like-kind exchange replacements under Revenue Ruling 2004-86.
DST Mechanics
A DST sponsor (Inland Real Estate, ExchangeRight, Griffin-American Healthcare, Cantor Fitzgerald Real Estate Investments, JLL Income Property Trust, and others) acquires a large property or portfolio, typically worth $20–$200 million, places it into a DST structure, and offers fractional interests — typically minimum investments of $100,000–$250,000 — to 1031 exchange investors and direct investors. The DST itself holds the deed; investors hold beneficial interests. Because a DST beneficial interest is treated as a direct ownership interest in real property under Rev. Rul. 2004-86, it qualifies as like-kind real property for 1031 exchange purposes.
The Seven Deadly Sins of DSTs
A DST's structure is constrained by IRS requirements known informally as the "seven deadly sins" — things the DST trust and trustee cannot do after the offering closes:
- Cannot accept new capital or allow new beneficial interest holders after the closing date
- Cannot reinvest proceeds from the sale of trust property (must be distributed to beneficiaries)
- Cannot retain cash other than reserves for ordinary necessary expenditures (no retaining working capital beyond reasonable reserves)
- Cannot renegotiate existing loans or borrow new funds, except in cases of emergency
- Cannot enter into new leases or renegotiate existing leases
- Cannot make capital expenditure improvements to the property, other than normal maintenance
- Cannot invest cash held between distribution dates in anything other than short-term debt obligations
These restrictions mean that DST investors have essentially zero operational control. The property is managed entirely by the DST trustee (the sponsor). This is the trade-off for passive income — you give up all decision-making authority.
DST to 721 Exchange (UPREIT Strategy)
A sophisticated exit strategy available with some DST sponsors is the 721 exchange (UPREIT conversion). After holding the DST interest for the required period, the DST property is contributed into a Real Estate Investment Trust (REIT) operating partnership in exchange for OP units. This is a tax-deferred transaction under IRC §721. The OP units eventually convert to publicly traded REIT shares, which can then be sold for cash (this sale is taxable, but provides liquidity that was not available during the DST hold). For estate planning purposes, holding OP units until death again provides the stepped-up basis benefit. Some Arizona investors use the 1031 → DST → 721 chain to ultimately achieve portfolio diversification, liquidity, and a potential estate-planning exit without ever triggering capital gains during their lifetime.
DST Risks and Costs
DSTs are not without significant risks and costs: broker-dealer commissions of 7–10% on the investment, illiquidity (typical hold is 5–7 years with no secondary market), sponsor conflict of interest, property-level leverage risk (many DSTs carry non-recourse loans), and the possibility that the property does not perform as projected. Always review the Private Placement Memorandum (PPM) carefully and work with a broker-dealer or RIA registered to sell DST offerings (they require a securities license; your real estate agent is typically not licensed to recommend DSTs without additional licensing).
1031 Exchanges and Opportunity Zones: The Double Deferral
Arizona has multiple IRS-designated Opportunity Zones, primarily in South Phoenix, parts of Mesa and Glendale, the Goodyear corridor, and rural areas along the US-60 corridor. A sophisticated strategy combines 1031 exchange deferral with Opportunity Zone Fund (QOF) investment to double-defer and potentially eliminate taxes on both the original gain and any QOF appreciation.
The Combined Strategy
Here is how it works: Suppose you sell a $1.2 million property with $600,000 in gain. You execute a 1031 exchange for $700,000 of the proceeds, buying a like-kind replacement property. The remaining $500,000 "boot" (cash not reinvested into like-kind replacement) would normally be taxable. Instead, you invest that $500,000 boot into a Qualified Opportunity Fund within 180 days of the boot being received. The QOF investment defers recognition of the boot gain until 2026 (under current law). If you hold the QOF investment for 10 years or more, any appreciation of the QOF investment itself is entirely excluded from income (step-up to FMV at sale). The result: you defer the original exchange gain through the 1031, defer the boot recognition through the QOF, and potentially eliminate taxes on the QOF's own appreciation.
This strategy requires careful coordination with a CPA experienced in both 1031 exchanges and Opportunity Zone fund investments. The QOF investment timeline, basis rules, and interaction between the two structures is complex, and getting it wrong can inadvertently accelerate recognition of gains you were trying to defer.
Related Party Rules: Critical Arizona Pitfalls
The IRS has strict anti-abuse rules preventing "round-trip" transactions between related parties. Under IRC §1031(f), you cannot exchange with a related party and have either party sell the transferred property within 2 years. "Related party" in this context includes family members (spouses, siblings, parents, children, grandparents, grandchildren), entities you control (corporations, partnerships, LLCs where you own more than 50%), and certain other related entities under IRC §267 and §707 definitions.
A common scenario that triggers this rule: a husband wants to sell his SFR rental to his wife's LLC in a 1031 exchange, with the wife's LLC then doing its own separate exchange. This is a related party exchange that triggers scrutiny under §1031(f). If either the husband or the wife's LLC sells the property they acquired within 2 years of the exchange, the original exchange is retroactively disqualified. There are exceptions for involuntary conversions and exchanges where tax avoidance was not a principal purpose, but the IRS scrutinizes related party exchanges heavily.
⚠ Arizona Community Property Warning
Arizona is a community property state. Even if investment real property is titled solely in one spouse's name, the other spouse may have a community property interest. In a 1031 exchange, both spouses must typically sign the exchange agreement and related documents. Failure to secure both spouses' signatures on exchange documents can create title defects and potentially jeopardize the exchange. Always work with an Arizona real estate attorney experienced in both 1031 exchanges and community property law when structuring exchanges involving property acquired during marriage.
Arizona-Specific 1031 Exchange Considerations
Arizona's unique legal and market environment creates several specific issues that investors and their advisors must address in every exchange.
Non-Disclosure State Impact
Arizona is a non-disclosure state — sale prices are not recorded in public records and are not available through the Maricopa County Assessor's website. For 1031 exchange documentation, this means establishing the fair market value of both the relinquished and replacement properties requires MLS comparable sales data, formal appraisals, or broker price opinions — not easily verifiable public records. Your QI and tax advisor will need your agent's market analysis and closing statements as primary evidence of value. In the event of an IRS audit of your exchange, these documents become critical. Retain all MLS printouts, appraisals, and complete closing disclosure statements permanently.
Arizona's Dry Funding System
Arizona is a "dry funding" state, meaning closing, recording, and funding all occur on the same day. Contrast this with California and many Eastern states where "wet" closings fund before recording. In Arizona, when your relinquished property closes, the QI wire must clear the QI's account the same business day. If there is a wire timing issue — the escrow company sends the wire too late, or the QI's bank does not receive it until the next day — you could be exposed to a constructive receipt argument. Coordinate with your escrow officer and QI weeks before closing to confirm wire timing and instructions. Provide your QI's wire instructions to the escrow company at the time you open escrow, not the day before closing.
BINSR Period and Exchange Timing
Under Arizona's standard purchase contract, buyers have a 10-day inspection period (BINSR — Buyer's Inspection Notice and Seller's Response) and a 5-day seller response window. When you are acquiring a replacement property in a 1031 exchange, you are working under the 180-day clock. Be strategic about when you open escrow on replacement properties relative to your 45-day identification deadline and 180-day close deadline. If you identify a property on Day 30 and open escrow immediately, the standard Arizona timeline gives you roughly 30 days from contract to close — well within the 180-day window. But if you identify on Day 42, you need to ensure your purchase contract's closing date does not extend beyond Day 180 regardless of inspection contingencies or lender delays.
CFD/SID Disclosure on New Construction
Many new construction replacement properties in the Phoenix metro — particularly in master-planned communities like Vistancia (Peoria), Verrado (Buckeye), Eastmark (Mesa), or Estrella Mountain Ranch (Goodyear) — carry Community Facilities District (CFD) or Special Improvement District (SID) assessments under ARS Title 48. These are separate annual assessments on top of property taxes, typically ranging from $500–$3,000+ per year, that fund infrastructure construction. When underwriting a replacement property for exchange purposes, model CFD/SID costs into your NOI projections. A $1,500/year CFD assessment on a 5% cap rate property reduces value by $30,000 from your initial estimate.
Water Rights Due Diligence for Rural Replacement Properties
If your replacement property is in an unincorporated area of Maricopa County (Rio Verde Foothills, parts of Buckeye, or rural Queen Creek), Arizona's water supply requirements under ARS §45-576 (Assured Water Supply) require that any subdivision or development demonstrate a 100-year assured water supply. The Rio Verde Foothills situation of 2023 — where Scottsdale cut off water delivery to thousands of unincorporated homes — demonstrated the real risk of water access for desert properties. Conduct thorough water due diligence on any rural replacement property in the Phoenix metro before committing exchange proceeds.