Downtown Power Play: Brookfield Puts Notions SF Home Up for Sale

Published: Friday, January 23, 2026 at 10:58 pm

Brookfield Properties Puts Historic San Francisco Building Up for Sale

In a move that underscores the evolving landscape of the commercial real estate market, Brookfield Properties has put the historic Monadnock Building up for sale. The 10-story office property, located at 685 Market Street, is being marketed to potential investors, even as productivity-software maker Notion settles in as its major tenant.

The offering comes on the heels of a recent lease agreement with Notion, which has secured approximately 105,000 square feet, or roughly five floors, with options to expand. This significant lease is seen as a positive development, potentially attracting institutional buyers looking for a stabilized income stream and a high-profile tech anchor.

The Monadnock Building, completed in 1907, is a Beaux-Arts office building that spans about 204,625 square feet. The property underwent renovations and previously faced challenges with vacancies after a major tenant, Uber, placed space on the sublease market in 2019.

The timing of the sale aligns with a broader trend in which artificial intelligence and related tech companies are driving demand for office space, contributing to positive absorption rates in urban cores. This trend has made top-tier office assets more appealing to investors.

The sale is being positioned as a prime downtown asset. The real story now shifts to the fine print in the marketing materials and which buyers are willing to step up as the sale process unfolds. Brookfield and Notion did not immediately respond to requests for comment.

BNN's Perspective:

The sale of the Monadnock Building, coupled with Notion's significant lease, highlights the resilience of the commercial real estate market in the face of changing economic conditions. While the shift towards remote work has impacted office occupancy, the influx of tech companies, particularly those in the AI sector, is providing a much-needed boost. This situation underscores the importance of adapting to market dynamics and the potential for long-term investment in well-located, historic properties.

Keywords: Monadnock Building, Brookfield Properties, Notion, San Francisco, office space, commercial real estate, sale, lease, AI, tech companies, investors, downtown, market trends

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