Updated Sep 23, 2026
SmartLabs Shuts Down 84K SF Lab Facility At 40 Guest Street In Boston With Landlord NB Development Group
40 Guest Street
Building Size
84,000 SF
Asset Type
Life Sciences
Closing
Sep 22, 2026
About this deal
AI
The property involved in this transaction is a life sciences asset located at 40 Guest Street in Boston, Massachusetts, comprising a total of 84,000 square feet.
Summary of transaction details:
- Property Type: Life Sciences
- Transaction Amount: Not Applicable
- Address: 40 Guest Street
- Market: Boston, MA
- Landlord: Keith Craig - NB Development Group
- Tenant: Brian Taylor - SmartLabs
In this transaction, Keith Craig represents the landlord, NB Development Group, while Brian Taylor represents the tenant, SmartLabs. Notably, SmartLabs is shutting down its lab facility at this location, marking the end of operations at its headquarters owned by NB Development Group.
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Life Sciences
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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