Rare Space CEO  Tom Grotewold spent his early years hitting tennis balls in Boulder. A native Boulderite, he  completed his education at the University of Colorado Leeds School of Business where he majored in finance and excelled as a D-1 tennis player. Tom began his real estate career in California with Cushman & Wakefield, where an early client were some guys in shorts and sandals calling themselves Blizzard Entertainment, the software developers that created World of Warcraft, now the foundation of Activision's $14 billion dollar video game empire. Tom returned to Colorado and joined CBRE in their Corporate Services Division, and after 7 years at CBRE, he started Rare Space in 2002 as a pure tenant representation firm. Tom’s experiences with clients including Dean Evans & Associates, Newsgator, Proligo, Slice of Lime, eWise, CenterStone, Corgenix, Chromadex, Echoserve/Unisyn, Equus Software, Cologix, Liteye Systems, Integro, Open Technology, ParTech and Return Path fuel his passion to work with the technology sector. Tom is an active member of the Colorado Technology Association, the Foundation Fighting Blindness and Junior Achievement. He enjoys golf, tennis, squash, skiing and is an advocate of the Powder Rule.

Rare Space Partner Tanner Mason often spends his weekends on wheels. From climbing steep mountain passes on his road and mountain bikes to Jeep racing on frozen Georgetown Lake to pushing daughter Kailey on her big-wheel and son Will in his stroller, off-time is typically life in the fast lane. Weekdays, however, find him moving a little more slowly. A familiar face to many in the Denver business community, Tanner rarely goes anywhere without being recognized and stopped. Formerly with Frederick Ross, Tanner has enjoyed over 12 years in the commercial real estate and business community. He has spearheaded many Denver commercial space deals (including quite a few Denver and Boulder flex / industrial space deals), and his large base of returning clients and referrals is a testament to his abilities. Tanner is involved with the Denver 20/30 Children’s Foundation and sits on the board of Brokers Benefitting Kids. Tanner is an Eagle Scout, so find him if you are ever lost in the wild.

Rare Space Broker Jeff Mason
has deep roots in the state of Colorado, tracing his ancestry back to a great-grandfather who was a miner in Central City. True to that wild west foundation, Jeff and his wife Colleen spend a portion of their free time on horseback. Jeff is a University of Colorado at Boulder graduate with a degree in finance. He brings to Rare Space his 20 year background in commercial furniture brokerage. Clients appreciate how this credential allows him to understand the space lay-out needs of their businesses as well as his attention to detail and follow-up. Jeff is a skier and cyclist and also a member of the Denver Rotary Club.