Oakline Expands Management Portfolio With 12,500-Unit Deal
The firm’s footprint has grown to more than 80,000 units since its inception less than a year ago.

Oakline Properties has acquired ResidentialOne, an affordable multifamily property management company overseeing more than 12,500 units across 120 properties in Maryland, Virginia and Washington, D.C.
ResidentialOne launched more than 25 years ago and has consistently achieved HUD inspection scores above regional market averages. Some of the largest properties in its portfolio include Bardley Crossing, a 403-unit community in Chevy Chase, Md., and the 392-unit Worthington Woods in D.C., according to Yardi Matrix data.
Oakline operates by acquiring and scaling property management companies across the U.S., enhancing local expertise by implementing AI in multifamily operations.
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The company debuted in September 2025, and its footprint has since grown to more than 80,000 units under management nationally. Private equity firm Alpine Investors launched Oakline with Amanda Sayigh as CEO. Previously, she held roles at Morgan Stanley and Apple, among other companies.
Nina-Lee Jewell Alhambra also joined as Chief Portfolio Officer. Jewell Alhambra has more than 20 years of experience across property management and LIHTC development, having previously served at April Housing, a Blackstone portfolio company.
Oakline’s growth momentum carries on
Cirrus Asset Management marked Oakline’s first partnership, contributing with a portfolio of more than 22,000 multifamily units valued at $7 billion across eight states. That agreement closed in September.
Four months later, Oakline reached a deal with Drucker + Falk, adding more than 43,000 units to its management portfolio, as well as 3 million square feet of commercial space, spanning 10 states.
Earlier this year, the firm also expanded its presence into the student housing market through its acquisition of Four Star Realty, a company managing 5,000 multifamily and 3,000 student housing units throughout Colorado.
U.S. merger and acquisition deal value spiked
The defining characteristic of this year’s merger and acquisition U.S. deals is macro insensitivity, with such agreements not reliant upon interest rates, GDP growth or trade policies, according to a report by PwC.
Deal value nationwide reached a staggering $1.2 trillion year-to-date through May, marking a 99 percent year-over-year increase. Real estate capital deployment was concentrated in platforms that may scale in markets with reliable, structural demand.
Other such acquisitions, particularly in the multifamily property management sector, included Domain Capital Group’s purchase of Denver-based Simpson Property Group—a deal that expanded Domain’s portfolio by more than 23,000 units.

