JLL brokers 40,000 SF lease for HF Sinclair

SALT LAKE CITY, April 15, 2025 – The reinvigoration of one of Salt Lake City’s most distinguished business corners continues as Fortune 500 company HF Sinclair moves one of its regional offices to The 324. The 40,367 square foot, long-term lease on the top floor of the five-story office building further establishes The 324 as a premier office destination, blending history with modern workplace innovation.

Mortenson Properties and Hamilton Partners, joint owners, renovators and operators of The 324 since 2020, have integrated elements that reflect the building’s evolving purpose, celebrating its past while looking to its future. “By preserving its historic character while introducing modern amenities, we’ve created an inspiring workplace tailored for today’s workforce,” said Dan Ryan, Managing Director of Mortenson Properties. “HF Sinclair’s commitment to The 324 reflects the again-rising demand for quality office space in Salt Lake City. Companies need more than just a place to work – they seek environments that foster collaboration, innovation, and well-being.”

Located in the heart of downtown at the corner of 300 South (also known as Broadway) and State Street, The 324 offers quick and easy access not only to the city’s top dining, arts, and entertainment destinations, but also an onsite parking garage with direct building access and close proximity to TRAX public transit. 

Originally built in 1911, The 324 now fuses its original brick and concrete elements with contemporary workplace solutions. The building’s modern amenities include an updated central lobby, fitness center, wellness room, bike and ski storage, EV charging stations in the connected parking garage, security services, and conference and training facilities. Spaces ranging from 4,000 to 20,000 square feet are available.

JLL’s Jami Marsh and Amanda Lawson represented the Landlord, with CBRE representing HF Sinclair. “We are thrilled to welcome HF Sinclair to The 324,” said Lawson. “We believe this lease indicates a turning point in the demand for high-quality office space in centrally located, well-amenitized areas like downtown Salt Lake City. The 324 provides a state-of-the-art, character-filled work environment, and we’re excited to see HF Sinclair thrive in this dynamic setting.”