Articles

Top Markets for Multifamily Building Permits

Multifamily permitting trends indicate continued national stability amid local recalibration. Across the country, issuances were steady, rising just 2.6% in 2025. At the metropolitan level, trends diverged sharply, with some markets accelerating and others pulling back. Per-capita leaders continued to cluster around high-growth Sun Belt and regional hubs, while year-over-year market-level fluctuations suggest that more pipelines have become increasingly selective and, in some cases, more concentrated in large-scale projects.

Articles

Seven Facts About FHA Multifamily Loans

The Federal Housing Administration (FHA), a part of the U.S. Department of Housing and Urban Development (HUD), is one of the largest mortgage insurers in the world. The agency insures mortgages on affordable housing, multifamily properties, single-family homes, and healthcare facilities. Since 1934,  FHA has financed over 50,000 multifamily mortgages nationwide. Whether you’re interested in acquiring, refinancing, or rehabilitating an affordable housing property, FHA multifamily loans are a financing route you need to know about.

FHA 232/223(f)

FHA® 232/223(f): Healthcare Refinance, Acquisition or Mod Rehab  

Articles

Top States for Population Growth

Despite a national slowdown, population growth remained concentrated in a small group of states in 2025, where strong net domestic migration inflows, economic opportunity, and in some cases elevated birth rates drove the annual increases. Overall, 14 states had an annual population growth rate above 0.75%, while 12 states had less than 0.1%, according to a Chandan Economics analysis of the U.S. Census Bureau’s 2024 American Community Survey.

Articles

Arbor’s Build-to-Rent Financing: 10 Reasons to Choose a Premier Lender

Build-to-rent (BTR), a compelling solution to the U.S. housing market’s evolving needs, is experiencing record growth. BTR accounted for 8% of all single-family rental (SFR) construction starts in the 12 months that ended in the first quarter of 2024, according to Arbor’s Single-Family Rental Investment Trends Report Q2 2024. As the need for quality rental units remains high, borrowers have much to gain from partnering with an experienced lender who specializes in build-to-rent financing.

Articles

Nearly All Metros Post Positive Rent Gains

National rent growth in the single-family rental (SFR) sector remained strong and consistent in 2025 as market-level pricing momentum was broad-based and robust, according to an analysis of newly released data from the Zillow Observed Rent Index. Year-end annual rent gains averaged 2.9%, down from 4.1% in 2024, marking the most modest increase since 2015. But even as the intensity of SFR rent growth abated last year, its reach was extensive, with 98 of the 100 largest markets posting year-over-year gains.

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Home | Management Team | William Foster

William Foster

Managing Director, Tax and Strategic Planning

William Foster is responsible for all of Arbor’s corporate income tax matters, including tax structuring of transactions; management of effective tax rates; general tax planning; assistance with M&A structuring; and oversight for income tax compliance. This entails advising the Chairman and other executives within the Arbor family of legal entities on complex tax structures and strategic planning initiatives to enhance shareholder value.

Mr. Foster comes to Arbor with vast expertise in taxation and building shareholder value. Prior to joining Arbor, he was the Founder and Managing Partner of Foster & Foley LLP, a tax consulting practice advising high-net-worth individuals and multinational companies on diverse consulting strategies to minimize tax liabilities and increase shareholder value. Mr. Foster began his career at Ernst & Young LLP, a global professional services firm.

Mr. Foster received a Bachelor of Science in Accounting from Adelphi University and has been a practicing CPA for more than three decades. He is also an active member of the American Institute of Certified Public Accountants (AICPA) and the New York State Society of CPAs (NYSSCPAs).

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