Organization	9 Months Ended
Sep. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization As used herein, the terms “we”, “us”, “our” or the “Company” refer to Innovative Industrial Properties, Inc., a Maryland corporation, and any of our subsidiaries, including IIP Operating Partnership, LP, a Delaware limited partnership (our “Operating Partnership”). We are an internally-managed real estate investment trust (“REIT”) focused on the acquisition, ownership and management of specialized industrial properties and investments in the life science industry. We intend to pursue investments in debt and equity instruments related to life science properties and acquisitions of properties within the life science industry as a key component of our growth strategy. We may continue expanding our investment activities to include joint ventures, debt or mezzanine financing, preferred or joint venture equity interests, and interests in other real estate funds or REITs. Our properties are primarily leased to experienced, state-licensed operators for their regulated cannabis facilities. We have acquired and intend to continue to acquire our properties through sale-leaseback transactions and third-party purchases. We have leased and expect to continue to primarily lease our properties on a triple-net lease basis, where the tenant is responsible for all aspects of and costs related to the property and its operation during the lease term, including structural repairs, maintenance, real estate taxes and insurance. Outside of the cannabis sector, our leases may include different lease structures that do not require tenants to assume all property-related expenses. We were incorporated in Maryland on June 15, 2016. We conduct our business through a traditional umbrella partnership real estate investment trust, or UPREIT structure, in which our properties are owned by our Operating Partnership, directly or through subsidiaries. We are the sole general partner of our Operating Partnership and own, directly or through subsidiaries, 100% of the limited partnership interests in our Operating Partnership.

Organization

9 Months Ended

Sep. 30, 2026

Organization, Consolidation and Presentation of Financial Statements [Abstract]

As used herein, the terms “we”, “us”, “our” or the “Company” refer to Innovative Industrial Properties, Inc., a Maryland corporation, and any of our subsidiaries, including IIP Operating Partnership, LP, a Delaware limited partnership (our “Operating Partnership”).

We are an internally-managed real estate investment trust (“REIT”) focused on the acquisition, ownership and management of specialized industrial properties and investments in the life science industry. We intend to pursue investments in debt and equity instruments related to life science properties and acquisitions of properties within the life science industry as a key component of our growth strategy. We may continue expanding our investment activities to include joint ventures, debt or mezzanine financing, preferred or joint venture equity interests, and interests in other real estate funds or REITs. Our properties are primarily leased to experienced, state-licensed operators for their regulated cannabis facilities. We have acquired and intend to continue to acquire our properties through sale-leaseback transactions and third-party purchases. We have leased and expect to continue to primarily lease our properties on a triple-net lease basis, where the tenant is responsible for all aspects of and costs related to the property and its operation during the lease term, including structural repairs, maintenance, real estate taxes and insurance. Outside of the cannabis sector, our leases may include different lease structures that do not require tenants to assume all property-related expenses.

We were incorporated in Maryland on June 15, 2016. We conduct our business through a traditional umbrella partnership real estate investment trust, or UPREIT structure, in which our properties are owned by our Operating Partnership, directly or through subsidiaries. We are the sole general partner of our Operating Partnership and own, directly or through subsidiaries, 100% of the limited partnership interests in our Operating Partnership.