Duplex for Sale Phoenix
A Phoenix duplex is a good buy when the rent covers the payment, property taxes, insurance, vacancy and repairs, and at Phoenix prices and today's interest rates that usually means buying below the asking price or living in one unit. Property taxes are a smaller line here than in Texas or Illinois, so the purchase price and the loan payment decide most deals. Before you offer, check four Arizona-specific things: rental registration and tax class, whether the zoning allows two units, flood risk in monsoon season, and Arizona's wholesaling disclosures if you plan to assign. Then run the numbers with real rent comps.
Updated October 30, 2026. Not legal, tax or lending advice; check figures for the specific property.
For the general playbook, see our guides to buying a duplex and how to find duplexes for sale. This page covers what is different in Phoenix. For a sense of price level: the median listing price for all home types in the Phoenix-Mesa-Chandler metro was $475,000 in September 2026 (Realtor.com data via FRED, checked October 30, 2026). That covers the whole metro and every property type, so use sold comps for the building you are looking at.
Phoenix-specific checks before you offer
1. Rental registration and tax class
Arizona law (A.R.S. § 33-1902) requires owners of residential rental property to keep their name, address and phone number, the property's address and parcel number and the year built on file with the county assessor, plus an in-state statutory agent if the owner lives out of state, and to update it within ten days of a change. A rental without that information on file may not be occupied, and an owner who doesn't register after notice can face city civil penalties (for a newly acquired property, $1,000 plus $100 a month) unless they comply within ten days (checked October 30, 2026). In Maricopa County you register through the Assessor's site. Registered rentals are classed as Class 4.2, which the Assessor says does not qualify for the State Aid to Education Tax Credit, so a rental's tax bill can be higher than the owner-occupied bill you see in the listing (checked October 30, 2026). Look up the parcel's actual bill on the Maricopa County Treasurer's site.
2. No city rental tax since 2025
Phoenix and other Arizona cities used to charge a transaction privilege tax on residential rent. Since January 1, 2025, A.R.S. § 42-6004(H) bars any city or town from taxing residential rentals (Laws 2023, Chapter 204; checked October 30, 2026). Older pro formas that include a rental tax line are out of date.
3. Zoning: confirm two units are legal
Check the Phoenix zoning for the lot before you count a second unit's rent. Arizona's middle-housing law, A.R.S. § 9-462.10, requires cities with 75,000 or more people to allow duplexes, triplexes, fourplexes and townhomes on single-family lots within one mile of the central business district, and in at least 20% of new developments over ten contiguous acres. Cities had to adopt rules by January 1, 2026; a city that missed the deadline must allow middle housing on all single-family lots (checked October 30, 2026). How Phoenix applied the law to a given lot is a question for the city's Planning and Development Department. For an existing duplex, confirm the second unit was permitted.
4. Flood risk: monsoon season
Phoenix floods fast in summer monsoon storms, often in washes and low streets that people don't think of as flood-prone. Look up the address on the FEMA Flood Map Service Center and the Flood Control District of Maricopa County's maps, and ask the seller about water intrusion. If the building is in a special flood hazard area and you finance with a federally backed loan, flood insurance is required.
5. Rent: use comps, with HUD as a sanity check
HUD publishes Fair Market Rents for the Phoenix area, including ZIP-level figures. Use them as a sanity check, especially if you plan to accept housing vouchers, but price your rent from recent leases of similar units nearby. See rent comps for how to pick them.
The duplex math: an illustrative Phoenix example
These numbers are made up to show the method, not a quote for any real property. Plug in your own; the tax and insurance lines especially should come from the parcel's real bill and a quote.
| Line (monthly) | Assumption | Amount |
|---|---|---|
| Gross rent | 2 units at $1,600 | $3,200 |
| Vacancy | 8% of gross rent | −$256 |
| Property management | 10% of gross rent | −$320 |
| Property taxes | Illustrative; use the parcel’s Class 4.2 bill | −$250 |
| Insurance | Illustrative | −$150 |
| Maintenance and capital reserves | 10% of gross rent | −$320 |
| Net operating income | $1,904 | |
| Loan payment (principal and interest) | $337,500 loan (25% down on $450,000) at 7.24%, 30 years | −$2,300 |
| Cash flow | −$396 |
The 7.24% rate is Freddie Mac's Primary Mortgage Market Survey average for a 30-year fixed loan in the week of October 29, 2026. That survey covers owner-occupied loans; investment-property loans usually price higher, which makes the result worse. Under these assumptions, the duplex breaks even at a purchase price of about $373,000, roughly 17% below the $450,000 example. That gap is why most Phoenix duplex investors either negotiate hard, buy one that needs work, or house hack with an owner-occupied loan. Run your own numbers in the rental cash flow calculator.
Where to find duplexes for sale in Phoenix
- The MLS through a local agent. Most Phoenix-area listings go through ARMLS, the regional MLS. An agent can set alerts for 2-unit properties and pull sold data.
- National portals. Zillow and Realtor.com carry most MLS listings; filter by multi-family and check the unit count in the description.
- County records. The Maricopa County Assessor's parcel records show use, legal class and the owner's mailing address, so you can find two-unit buildings and owners who have never listed, including out-of-state owners. See how to find absentee owners.
- Wholesalers and investor groups. Local wholesalers send off-market duplexes to their buyer lists. Get on several lists and answer quickly.
- Direct outreach to owners. Mail is the low-risk route. If you call or text owners, scrub numbers against the National Do Not Call Registry and follow TCPA consent rules (see the TCPA entry).
Selling or wholesaling a Phoenix duplex
Most duplex buyers are landlords, so they price from rent, not from the resale value of a single-family house. Lead with the rent roll (or market rents if vacant), the parcel's tax bill, the registration status and the repairs. For who buys locally, see our Phoenix cash buyers page, the Phoenix wholesale market and wholesaling duplexes. Arizona's wholesaling statute, A.R.S. § 44-5101, covers residential property with fewer than five units, so it applies to duplexes: you must disclose in writing to the seller that you are a wholesale buyer and to the end buyer that you hold only an equitable interest. Read our Arizona wholesaling compliance guide (not legal advice; check with an Arizona attorney).
Doing this in Deal Run
Deal Run is our product. Deal Run does not find duplex listings or seller leads; you bring the address. Once you have one, you can analyze it as a 2-4 Unit property: sold comps and rent comps, AI repair estimates from the property's photos, and a max offer for a rental, flip or wholesale exit (max offer calculator). On Analyze + Sell, it also builds a ranked list of local landlords and flippers who recently bought near the property, from public records, with skip-traced phone numbers and emails (Phoenix buyers). Try the public demo on the homepage first: enter an address and see the analysis before you pay. Analyze is $29/mo with one free disposition deal; Analyze + Sell is $99/mo. Or pay per deal: $2 to analyze, $20 with 100 buyers.
Frequently Asked Questions
Is a duplex in Phoenix a good investment?
It can be, but only at the right price. Phoenix property taxes are lower than in Texas or Illinois, but prices are high enough that a duplex bought with 25% down at around 7% interest often does not cash flow; in our illustrative example a $450,000 duplex renting for $3,200 a month loses about $396 a month and breaks even at about $373,000. Duplexes work best as a house hack, bought below market, or held for appreciation with cash flow treated as a bonus.
Do I have to register a Phoenix duplex as a rental?
Yes. A.R.S. 33-1902 requires owners of residential rental property to keep owner and property information on file with the county assessor and update it within ten days of a change. In Maricopa County you register through the Assessor. Registered rentals are Class 4.2, which does not get the State Aid to Education Tax Credit, so the tax bill can rise after you buy.
Can I add a second unit or build a duplex on a Phoenix single-family lot?
Sometimes. A.R.S. 9-462.10 requires Arizona cities with 75,000 or more people to allow duplexes and other middle housing on single-family lots within one mile of the central business district, with rules due by January 1, 2026. Outside that area, normal zoning applies, so ask the city's Planning and Development Department about the specific lot.
Can I buy a Phoenix duplex with an FHA loan?
Yes, if you will live in one of the units. FHA allows 3.5% down on owner-occupied 1-4 unit properties, with annual mortgage insurance for the life of the loan when you put down less than 10%. Duplexes don't face the self-sufficiency test that FHA applies to triplexes and fourplexes.
Can I wholesale a duplex in Phoenix?
Yes, with disclosures. Arizona's A.R.S. 44-5101 applies to residential property with fewer than five units, including duplexes. You must tell the seller in writing that you are a wholesale buyer and tell the end buyer in writing that you hold an equitable interest, not title. This is not legal advice; read our Arizona compliance guide and talk to an Arizona real estate attorney.
Sources and check dates
- A.R.S. § 33-1902, residential rental registration: azleg.gov (checked October 30, 2026).
- Maricopa County Assessor, Residential Rental Registration: mcassessor.maricopa.gov. Supports how to register and the Class 4.2 State Aid to Education note (checked October 30, 2026).
- Laws 2023, Chapter 204 (SB 1131), A.R.S. § 42-6004(H): azleg.gov. Ends city tax on residential rent after December 31, 2024 (checked October 30, 2026).
- Laws 2024, Chapter 197 (HB 2721), A.R.S. § 9-462.10: azleg.gov. Middle-housing requirements and the January 1, 2026 deadline (checked October 30, 2026).
- Realtor.com median listing price via FRED, Phoenix-Mesa-Chandler metro (series MEDLISPRI38060): fred.stlouisfed.org. $475,000 for September 2026, all home types (checked October 30, 2026).
- Freddie Mac Primary Mortgage Market Survey: freddiemac.com/pmms. 30-year fixed average of 7.24% for the week of October 29, 2026.
- FEMA Flood Map Service Center: msc.fema.gov. Flood zone lookups.
- HUD Fair Market Rents: huduser.gov. Metro and ZIP-level rent benchmarks. Check the current Phoenix-area FMRs at huduser.gov.
- Arizona wholesaling rules: our Arizona A.R.S. 44-5101 guide, checked against the statutes October 5–6, 2026.