Rialto Capital Has Foreclosed on 580 Market Street

The firm seized the San Francisco office building after the owner failed to repay a $15.7 million loan.

Updated on Sept. 30, 2026 in Commercial

Exterior facade of a historic San Francisco office building with masonry detailing, captured in neutral, overcast daylight.
Rialto Capital has seized control of 580 Market Street in San Francisco after Paragon Company failed to repay a $15.7 million commercial loan. AI Illustration. Upload story photo >

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Rialto Capital has taken control of the office property located at 580 Market Street in San Francisco. The foreclosure follows the maturity of a $15.7 million loan that remained unpaid by the owner, Paragon Company.

Why it matters

The seizure highlights the significant challenges facing commercial real estate owners in San Francisco, where high vacancy rates have put pressure on property values and debt repayment capabilities.

Rialto Capital paid $5 million to secure the 35,000-square-foot building, which was valued at $9.9 million in March 2026. The property was 53 percent occupied as of December 2024.

The players

Rialto Capital

This investment firm specializes in real estate and debt, frequently managing distressed assets and loans.

Paragon Company

This firm was the previous owner of the 580 Market Street commercial building.

The details

Paragon Company originally acquired the building in 2015 for $24.2 million, but the property has since lost significant value. A notice of default was served in October 2025 before the trustee deed recorded the final debt load this year.

Timeline

  1. Paragon Company acquired the property in 2015.

  2. The loan for the building matured in June 2025.

  3. A notice of default was issued to the owner in October 2025.

  4. The property was appraised at $9.9 million in March 2026.

  5. A disposition of the building is expected in the first quarter of 2028.

Roadmap

The foreclosure of 580 Market Street reflects the ongoing volatility in the San Francisco commercial market as property values decline. This event illustrates the broader struggle of owners to reconcile high purchase prices with current market valuations.

The transition of this property may lead to changes in management or tenant lease terms for businesses located in the Financial District near the Montgomery BART station. Local workers and businesses should anticipate potential updates to the building's operations as a new owner takes control.

The takeaway

Commercial property owners are facing continued pressure to restructure debt as the market continues to grapple with record-high vacancy rates. Investors should monitor how lenders handle such defaults as they manage their portfolios through this downturn.

Further reading

Learn more about the local market in the San Francisco Commercial section.

Source note: This article includes information reported by The Real Deal New York.

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