Articles

SFR Investing: A Guide to Seizing the Sector’s Momentum

Single-family rental (SFR) investing is surging as this asset class outperforms. With homeownership less attainable and lifestyle renting more popular, the sector’s tailwinds bode well for long-term growth. If you are new to this space, our guide has answers to commonly asked questions.

Current Reports

Single-Family Rental Investment Trends Report Q2 2025

Bolstered by robust build-to-rent (BTR) activity, the single-family rental (SFR) sector continued to display strength even as the residential housing market moderated. Arbor’s Single-Family Rental Investment Trends Report Q2 2025, developed in partnership with Chandan Economics, provides original research and analysis of key performance metrics for investors to take a closer look at a sector on the rise.

Analysis

Small Multifamily Investment Snapshot — June 2025

Amid ongoing macroeconomic uncertainty, the small multifamily sector remains favorably positioned for stability as the structural need for affordable housing in the U.S. has supported the strength of the sector’s demand profile.

Articles

Single-Family Build-to-Rent Starts Remain Robust

As build-to-rent (BTR) demand rises, single-family rental (SFR) development has become more efficient in creating a distinct, community-focused experience for renters. Newly released U.S. Census Bureau data confirms that SFR/BTR development continues to be robust and stable, with its annualized pace of construction in the first quarter of 2025 matching the previous quarter’s tally.

Articles

Top Multifamily Markets for Low Renter Turnover

Tenant retention is a valuable — though sometimes elusive — contributing factor to the strength of a multifamily property. Nationally, 29% of multifamily households signed a third lease for the same unit, according to an analysis of the U.S. Census Bureau’s American Community Survey. Locally, renter turnover was lowest in major coastal markets, like New York City, and highest in transient renter markets, like Charleston, SC.

Current Reports

Small Multifamily Investment Trends Report Q2 2025

While markets undergo rapid recalibration, the small multifamily market’s performance remains strong and stable. Arbor’s Small Multifamily Investment Trends Report Q2 2025, developed in partnership with Chandan Economics, details how the sector’s resilient fundamentals effectively support its growth amid ongoing economic volatility.

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Home | Senior Team | Mario Arena

Mario Arena

Senior Vice President, Associate General Counsel, Agency Lending Legal
Mario Arena

Mario Arena acts as the primary servicing attorney for the Agency Asset Management, Securitized SFR, and Securitized Arbor Private Label mortgage loan teams. He is responsible for ensuring compliance with Fannie Mae, Freddie Mac, HUD, and FHA guidelines. He works closely with Risk Management to mitigate risk on defaulted loans and advises on foreclosure, bankruptcy, and other workout options.

Mr. Arena has been an attorney focused on mortgage servicing in the multifamily housing market for more than 15 years. Prior to joining Arbor in 2018, he was a private practice attorney.

Mr. Arena has a Bachelor of Science in Criminal Justice from Western New England University and a Juris Doctor from Western New England University School of Law. He is licensed to practice law in New York, Massachusetts, Connecticut, and Maine.

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