facebook
TradedTraded
    Home
    Search
    Closings
    Listings
    On Market
    Off Market
    Add a listing
    Vaults
    shh
    Rankings
    News
    Data
    Socials
    More


Messages

Go Pro
+ Submit+ Submit a Deal
Home

/

Deals

/

California

/

Office

/

Lease

/

3180 18th Street

Exa Leases 40,000 Square Feet At Pioneer Building In San Francisco’s Mission District
LEASEDOffice

Exa Leases 40,000 Square Feet At Pioneer Building In San Francisco’s Mission District

3180 18th Street

Building Size

40,000 SF

Asset Type

Office

Closing

Aug 20, 2026

AI

The Pioneer Building, located at 3180 18th Street in San Francisco, CA, is an office asset comprising approximately 40,000 square feet. This historic property, constructed in 1902, has seen various tech companies, including Stripe and OpenAI, as previous tenants, making it a notable site within the region's tech landscape.

Summary of transation details:

AI startup Exa has entered into a lease for at least seven years at this location, taking over the property from Elon Musk’s xAI. This transaction highlights the ongoing commitment of the building to serve as a hub for the AI and tech industries in San Francisco.

Players

Charlie Hannafin

JLL

Broker
Broker
CBRE
CBREBrokerage
Deborah Harmon

Deborah Harmon

Artemis Real Estate Partners

Landlord

$1.1B

vol

13 deals

Landlord

Will Bryk

Exa

Tenant
Tenant

Saint Maries Office Market Snapshot

Boundary boundary · Office · Lease transactions

Loading comparables…

Purchase Price

Annual NOI

Loan Amount

Interest Rate (%)

Loan Term (yrs)

Down Payment (%)

Cap Rate

5.80%

Cash-on-Cash

-1.66%

Monthly Payment

$14,164

Annual Debt Svc

$169,964

Annual Cash Flow

$-11,334

DSCR

0.93