@willcassriel profile picture
Will Cassriel @willcassriel

Helping startups find their office space

Joined September 2022
  • Tweets 579
  • Following 819
  • Followers 269
87 Photos and videos
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Will Cassriel
@willcassriel
25 Oct 2023
We're continuing to see #AI companies lease office space in #SanFrancisco in high demand... below is just a sliver of those planting roots in the city. DM me if interested seeing our full report #AreaAI
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Helping a client sublease this space in Downtown San Francisco. Available now and comes fully furnished. DM me if interested 🙌
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Helping a client sublease office space in Hayes Valley... Perfect for early stage startups. DM me if interested 🙌
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Will Cassriel retweeted
Ranger
@RangerNetHQ
Feb 18
We don't manually test features anymore. You can now run continuous QA features in Claude using “Feature Review” by Ranger. Feature Review is an always-on AI QA that runs in the background, fixing features while providing you and your team with full visibility. Never ask Claude to fix errors again.
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Will Cassriel retweeted
Alex Kesin
@alexkesin
Jan 8
For a decade, techbio optimized the drug discovery "paper mill": more molecules, faster. But the hard part - knowing which ones will work safely in humans - hardly moved at all. Late last year, I spent time with Axiom Bio, a company built around the idea that the real bottleneck is predicting clinical activity in molecules, *not* merely discovering them.
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~$80B in VC funding to San Francisco-based companies Q1-Q3 2025 👀… many early stage companies growing and leasing office space in the city
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Will Cassriel retweeted
Daniel Lurie 丹尼爾·羅偉
@DanielLurie
24 Oct 2025
Happy to see San Francisco on the list of safest cities, 1 of only 2 US cities to make this list. travelandleisure.com/safest-…

This City Was Named Safest in the World for Travelers—for the Second Year in a Row

The Icelandic capital topped a new ranking for its safety, charm, and easy access to natural wonders.

travelandleisure.com
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With more and more employees going into the office, BART ridership is up 8.4% YOY. 2/3 of that growth can be attributed to riders entering/exiting BART stations in downtown San Francisco #ReturnToOffice
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Will Cassriel retweeted
Jeffrey Wang
@jeffzwang
12 Oct 2025
SF is filling up like a gold rush town right now Rental market is so insane that my cofounder has been homeless for almost 3 months Offices moving from Hayes hackerhouses to "The Arena" in the Mission to FiDi high rises, as headcounts increase
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Congrats! @NWischoff awesome spot and a pleasure working with you 🙌🏼 @HillyHogan and I are stoked to be a small part of the journey
Nichole Wischoff
@NWischoff
10 Oct 2025
Lease signed for our first SF office!!! Monthly wine nights and coffee/breakfasts kicking off in November in Jackson Square. Let me know if you want to join.
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Congrats @pk_iv @erin_goode! Awesome new HQ for @browserbase 🙌 @JohnRoskos2 and I are stoked to be a small part of the journey. Big things ahead for Browserbase 🚀
Paul Klein IV
@pk_iv
22 Sep 2025
live reaction to our new office at 🅱️
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Top 3 U.S. Talent Hubs 2025: NY, SF, LA While it was a race to find engineers in more affordable locations, we're now seeing the shift to quality / highly productive staff in knowledge centers like NY, SF, LA. Most of them working together in the office rather than remote. This shift means the gateway markets are growing and the secondary markets are slowing.
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Interesting trend we're seeing... ▶️ Pre-pandemic: "view space" rents moved parallel to "non-view space" rents ▶️ Post-pandemic: "view space" avg rent INCREASE of $5.30/sf; "non-view space" avg rent DECREASE of $4.40/sf
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Congrats on the new office! Big things ahead for Browserbase 🚀@pk_iv @browserbase @erin_goode @JohnRoskos2 linkedin.com/posts/john-rosk…

Big moves for Paul Klein IV and Browserbase! Will Cassriel and I were thrilled to help the team...

Big moves for Paul Klein IV and Browserbase! Will Cassriel and I were thrilled to help the team secure their brand new office right in the heart of San Francisco's AI scene. From a tiny starter space...

linkedin.com
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Office market is tightening… New construction is limited, and we’re seeing availabilities decline across the board. Quality built out space is leasing quick (especially when furnished)
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In-office requirements have increased ~26% YOY for Fortune 100 companies... Avg # Days in Office per week: - July 2024: 3.1 - July 2025: 3.9 With office inventory declining in most markets, supply constraints will become more acute in the coming years.
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The # of active leases for AI companies in the Bay Area has increased exponentially since 2020... - 2020: 13 active leases - 2025: 325 and counting ...we don't see this slowing down any time soon 🚀
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