Build-to-rent development in Phoenix, by the numbers

Where the Phoenix BTR market stands

Phoenix is the deepest build-to-rent market in the country, and it is working through the heaviest supply wave in the product type's short history. Northmarq's Q3 2025 Phoenix BTR report counts nearly 30,000 existing units in Greater Phoenix, with more than 5,300 delivered through the first three quarters of 2025 alone.

Two numbers in that table carry most of the underwriting weight. The $440 monthly premium over conventional apartments is the revenue argument for the format. The $1,150 monthly gap between BTR rents and the median mortgage payment is the demand argument: the household that wants a yard, a garage, and a good school district still cannot buy at current rates, so it rents the closest substitute.

The 9.7 percent vacancy figure is the one that separates disciplined deals from hopeful ones. It is up 120 basis points year over year, and it means lease-up assumptions written in 2022 do not survive contact with the 2026 market. Deals penciling today carry longer lease-up periods and concession budgets that older pro formas skipped.

Demand held through the supply wave

The transaction market answered the oversupply question with volume. Northmarq's Q4 2025 Phoenix multifamily report calls the quarter the highest three-month period of transaction volume in Greater Phoenix since the end of 2022. Roughly 40 percent of those trades involved properties delivered since 2020, at a median price of $303,600 per unit. Class B sales rose nearly 70 percent over 2024, and Class C sales rose more than 50 percent.

The forward supply picture is thinning at the same time. Multifamily construction starts totaled roughly 8,500 units in 2025, down about 50 percent from 2024 and the lowest level in nearly a decade, per the same report. Net absorption topped 21,000 units over the trailing twelve months, ahead of both 2023 and 2024, and metro-wide vacancy ended 2025 at 7.5 percent.

That combination is the whole 2026 thesis for Phoenix BTR development. Current vacancy runs high because 2023 and 2024 starts are still delivering. A project that breaks ground in 2026 delivers into the thinnest competitive set since the BTR boom began, with absorption running above the two prior years.

The trades setting Phoenix BTR pricing

Three recent transactions give a Phoenix BTR team real basis points of reference across the deal lifecycle: a stabilized institutional exit, a small-community acquisition, and a raw land buy.

Grandstone at Sunrise is the cleanest stabilized comp. Thompson Thrift sold the 140-unit Peoria community for $45.85 million in May 2026, or $327,500 per unit, in a sale brokered by IPA's Steve Gebing and Cliff David. The property was built in 2021 with one- and two-story homes averaging 1,069 square feet, positioned near the Loop 303 employment corridor that includes TSMC and Amkor Technology.

At the smaller end, TBBG and Canopy Real Estate Partners paid about $13.4 million for the 36-unit Sonoran Townhomes in Mesa, roughly $372,000 per unit for 2024-vintage three-bedroom townhomes with attached garages and private yards. It was the pair's second Phoenix BTR acquisition within twelve months. TBBG also broke ground with Titan Development on a 132-unit community at 35th and Southern avenues in South Phoenix, on 7.8 acres acquired in late 2023 for about $3.8 million, which works out to roughly $29,000 of land cost per unit.

Read together, the comps say the market pays a premium for newer, larger-format townhome product, and that land in infill South Phoenix can still be tied up at a basis that leaves room for vertical costs and the current lease-up math.

What the rent premium is worth on a real deal

Run the arithmetic on a Grandstone-sized project. At Northmarq's measured $440 monthly premium, a 140-unit BTR community generates about $739,000 more gross rental revenue per year than a same-size conventional community (140 units x $440 x 12 months).

Vacancy claws part of that back. At 9.7 percent BTR vacancy against the 7.5 percent metro-wide conventional rate, the BTR format runs roughly three more vacant units on a 140-unit property at any given time (about 13.6 versus 10.5). The vacancy drag trims the premium; it does not erase it.

That trade is what buyers at $327,500 per unit are underwriting: a durable revenue premium, a temporary vacancy penalty, and a construction pipeline that shrank by half behind them. The teams that get hurt are the ones carrying 2022 lease-up speeds in the model. The teams that do well are pricing today's concessions into year one and letting the thinning supply pipeline do the work in years two and three.

A land funnel sized for two starts a year

Development in this market is a sourcing discipline before it is anything else. A team that wants two BTR groundbreakings a year in Phoenix needs a wide funnel behind them, because most candidate sites die on zoning, utilities, retention requirements, or seller expectations.

Using the screening ratios most acquisition teams converge on (roughly 100 screened to 10 underwritten to 3 offers to 1 controlled), two controlled sites a year means screening on the order of 200 parcels annually. That is about four site reviews every week, all year, each one needing a quick read on zoning, water, sewer, traffic counts, and comp rents before it earns real underwriting hours.

Every site that survives screening then carries its own entitlement timeline, third-party reports, earnest money deadlines, and lender conversations, often across 12 to 24 months before vertical construction starts. Ten live sites at different stages is a normal load for a two-start team, and it is more state than a spreadsheet reliably holds.

Running a Phoenix BTR pipeline

BTR development pipelines have more stages than acquisition pipelines: land control, entitlement, site plan approval, horizontal work, vertical construction, lease-up. Teams run this on a pipeline board with stages matched to that sequence and days-in-stage visible, so a site sitting in entitlement review for 90 days is a flag on Monday morning rather than a surprise in month six.

Each site gets a deal workspace holding the survey, site plan, civil drawings, lender term sheets, and the key dates for earnest money and approval deadlines. We wrote a separate brief on how build-to-rent development teams structure deal management, and MotionCRE's multifamily setup covers the conventional side of the same pipeline.

Teams underwriting across the metro can also compare conditions with industrial acquisitions in Phoenix, where a different supply story is playing out in the same submarkets.

Submarkets to watch

Glendale, Mesa, and Casa Grande led BTR transaction activity through Q3 2025, per Northmarq, with the Goodyear and Avondale corridor expected to become more active. The named deals confirm the geography: Peoria trading near the Loop 303 employment spine, Mesa absorbing small-community capital, and South Phoenix drawing infill development dollars at sub-$30,000 per unit land basis.

The 2026 setup rewards teams that keep sourcing through the vacancy headlines. Inventory growth of roughly 5,000 units a year against a construction start count that just fell by half means the window between "supply-heavy" and "supply-starved" may be shorter than the current 9.7 percent vacancy suggests.