Rare Space CEO  Tom Grotewold spent his youth playing tennis in Boulder. A native Boulderite, he  completed his education at the University of Colorado Leeds School of Business where he earned a degree in finance and excelled on the Buff tennis team. Tom began his real estate career with Cushman & Wakefield, where an early client were some guys in shorts and flip flops calling themselves Blizzard Entertainment, the game developers that created World of Warcraft, now the foundation of Activision's $14 billion dollar video game empire. He 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 rep firm. His client list includes Return Path, Dean Evans & Associates, Newsgator, Proligo, Slice of Lime, eWise Payment Systems, CenterStone Technologies, Corgenix, Chromadex, Echoserve/Unisyn, Equus Software, Cologix, Liteye Systems, Integro, Open Technology, ParTech and Regis Learning Solutions. He is an active member of the Colorado Technology Association, the Foundation Fighting Blindness and Junior Achievement. He enjoys golf, tennis, squash, skiing and tries to observe 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. 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.

Rare Space Broker Todd Rosen has 25 consecutive years of commercial brokerage/real estate services for local, regional and national companies.  Notable clients and/or customers include Walmart, Under Armour, Starbucks, Chipotle, California Pizza Kitchen, Dollar Tree, Edward Jones, Hancock Fabrics, ClearChoice, IES Commercial, ProtoTest and Aha! Software.  He has successfully negotiated over 1,000 real estate transactions.

At Rare Space Inc., Todd specializes in representing tenants and buyers to satisfy their needs throughout the Denver Metropolitan area.  Rare Space is unique because they strictly advise/represent tenants and buyers and not landlords or sellers.  In addition, Todd has the advantage of having the Rare Space team behind him on every deal so his clients receive the benefit of over 70 years of combined experience.  Deal collaboration is a Rare Space cornerstone that results in the best outcome for its clients.