Multifamily Starts Hit 55,000 in Q1 2026 — Lowest Quarterly Level Since 2011
Research·2 min read·Sophia Warren·May 20, 2026

Multifamily Starts Hit 55,000 in Q1 2026 — Lowest Quarterly Level Since 2011

Apartment starts fell to ~55,000 units in Q1 2026 — a decade low and 73% below the early-2022 peak — per CoStar's project-level data. Under-construction stock is melting fast.

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The Data

Annotated line chart of US quarterly multifamily (5+ unit) starts from 2010 to 2026-Q1. After a 2010s recovery, the series peaks near 205K in early 2022 and falls steadily to 55K in Q1 2026, the lowest quarterly figure since 2011.

55,000 units. That's how many multifamily starts the country logged in Q1 2026, per CoStar's project-level apartment data — the lowest quarterly figure since 2011 and a 73% drop from the early-2022 peak (Multifamily Dive coverage of the CoStar/Apartments.com May 2026 report).

The under-construction stock is melting at the same time. National 5+ unit projects in progress fell to roughly 579,000 units, down more than 50% from the early-2023 peak and broadly back to mid-2010 levels. Deliveries — completions hitting the market — are off 26% over the trailing four quarters from a multi-decade high in 2024.

Grant Montgomery, CoStar's national director of U.S. multifamily analytics, attributed the pullback to "weaker rent growth and higher financing costs weigh[ing] on project feasibility."

The Context

The CoStar print runs against the headline narrative from federal permitting data. The Census Bureau's New Residential Construction series showed 5+ unit starts up 13.5% YoY in March on a seasonally adjusted annualized basis — and NAHB Chief Economist Robert Dietz earlier called January's 56.9% YoY surge "what appears to be an unsustainable high annualized pace." The two series diverge by design: Census BPS draws from a permitting survey converted to annualized rates, while CoStar tracks individual projects through their lifecycle. Over multi-quarter windows they tend to point the same direction.

Yesterday's REI Prime brief on Q1 2026 permit divergence covered the single-family / multifamily split inside the Census data. The CoStar report is the project-tracking counterpart: the pipeline that permits eventually feed.

Markets with the heaviest current exposure — Miami and Charlotte, both with more than 6% of existing inventory under construction — are still absorbing the 2024 delivery wave. Norfolk and Memphis sit below 1%. As Montgomery put it, the contraction "points to more balanced supply conditions ahead."

Also Moving

  • Q1 down payments fell to $23,400. Realtor.com reported the fourth consecutive quarterly decline in the typical down payment19% below Q1 2025 — alongside a rising share of government-backed loans (Scotsman Guide).
  • New-home mortgage applications turned negative. The MBA Builder Application Survey showed April applications down 2.4% YoY and 10% MoM — the first annual decline since October 2025 (Scotsman Guide).
  • NYC revived the COPA bill. Mayor Zohran Mamdani is backing a narrowed version of the Community Opportunity to Purchase Act, giving nonprofits first rights on distressed multifamily before open-market sale (CRE Daily).

What to Watch

Three signals over the next 30 days:

  1. Mid-June Census BPS release for May 2026 5+ unit permits (Census Building Permits Survey). Whether the Census-CoStar gap narrows tells whether the project-level slowdown is reaching permit data.
  2. Mid-July FOMC meeting. Rate path matters directly for multifamily project feasibility — Montgomery cited financing costs as the primary headwind.
  3. Q2 2026 CoStar delivery data in August. The 26% four-quarter decline from the 2024 peak is the metric for when the under-construction stock finishes drawing down.

Data sources: Multifamily Dive, Census Building Permits Survey, Census New Residential Construction, FRED UNDCON5MUSA.

Glossary Terms20 terms
1/4
A
National Association of Home Builders (NAHB)

The National Association of Home Builders (NAHB) is the largest U.S. trade association for single-family and multifamily home builders — a 140,000-member organization that publishes the monthly Housing Market Index, Housing Starts commentary, and New Home Sales analysis.

Read definition →
E
Building Permits Survey (BPS)

BPS is the Census Bureau's monthly survey of residential building permits issued by local permit-issuing jurisdictions — the source of every county and metro permit count used in real estate supply analysis.

Read definition →
E
Current Employment Statistics (CES)

CES is the BLS monthly survey of business payrolls that produces nonfarm employment counts at the national, state, and metro level — the establishment-based counterpart to LAUS unemployment data.

Read definition →
A
National Association of REALTORS (NAR)

NAR is the largest U.S. real estate trade association — 1.5 million REALTOR® members — that governs the MLS system, publishes the monthly Existing Home Sales report, owns Realtor.com, and whose 2024 settlement reshaped how buyer agents get paid.

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R
Rent

Rent is the periodic payment a tenant makes to a landlord in exchange for the right to occupy a property -- the single revenue line that funds your mortgage, expenses, and profit as a rental property investor.

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M
Multifamily Property

A multifamily property is any residential building containing two or more separate dwelling units under one roof — from a side-by-side duplex to a 300-unit apartment complex — where each unit has its own kitchen, bathroom, and entrance, and each unit generates independent rental income.

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About the Author

Sophia Warren

Residential Investment Analyst & News Editor

My realm is residential real estate investment, with a knack for spotting gems in emerging markets. I also edit the REI Prime daily news desk, where I translate federal data releases and operator signals into actionable briefs for small investors. Beyond properties, my world blooms in urban gardens and thrives in crafting stylish interiors.