About Flagstaff Properties

Our Story

Flagstaff Properties Incorporated has been serving the commercial and residential real estate markets in Boulder County since 1989. We are a local Boulder company located on the infamous Pearl Street in downtown Boulder, Colorado with a wealth of knowledge about both commercial and residential real estate we would like to share with you.

The recreation, weather, people, natural beauty, and brilliant minds that are attracted to the University of Colorado, all work together to make Boulder County the place that it is today. With 300 plus days of sunshine a year, Boulder is a Mecca for sports professionals and enthusiasts alike where exercise and a health conscious lifestyle are a way of life.

If you are exploring commercial or residential real estate in Boulder, Colorado or the surrounding areas of Louisville, Lafayette, Erie, Niwot, Broomfield, Westminster or Longmont, please consider Flagstaff Properties and the variety of client-centered services we offer.

Doug Haffnieter

Doug Haffnieter is the Broker owner and President of Flagstaff Properties. Doug is a Colorado native and he knows what makes Colorado and Boulder so desirable, because he has lived the lifestyle. A Graduate from Western State in Gunnison Colorado with a BS in Business, Doug knows about recreation. Doug has skied, windsurfed, hiked, fished, cycled and competed in triathlons throughout Colorado over the years.

Doug knows the balance of opportunity and lifestyle that Colorado has to offer. Upon graduation Doug moved to Carbondale, and in 1976 acquired his Colorado real estate license. He owned and operated Sopris Real Estate in Carbondale for 7 years. He was the Upper Colorado Board of Realtors President in 1984. Doug then moved to Boulder and established Flagstaff Properties.

He has bought and sold real estate for himself and his customers for 30 years and the business has afforded him the freedom to enjoy the Colorado lifestyle, build lasting relationships, and help others establish themselves and their companies in Boulder.


In 2019, the City of Boulder Open Space & Mountain Parks department hired Doug Haffnieter and Flagstaff Properties Inc. as its brokerage firm to assist with the sale of two properties. The properties presented numerous challenges but Doug and his team navigated those challenges extremely well and helped us successfully close in January 2020. I have had the privilege of working with Doug both as a buyer, and now as a seller, and would do so again given his knowledge and expertise, work ethic, honesty and commitment to do right by his clients.

Luke J. McKay
City of Boulder Parks & Open Space

Doug Haffnieter represented us with our residential development in Lafayette, Colorado. This included procuring the initial site in the Old Town district as well as the sales of both the residential and commercial units associated with the project.

This was very complicated at times and Doug guided us through a myriad of issues associated with the project.

We look forward to our next project with Doug and his team at Flagstaff Properties Inc.

Matthew Lawrence
Baseline Oldtown

I’ve known Doug for many years and he has assisted me with both residential and commercial properties. No project seems too large or too small for Flagstaff.

Even in difficult markets, Flagstaff has always managed to make every transaction seem relatively simple. 

Their knowledge of the Colorado real estate market is really unparalleled and they would be the only agent I would ever consider using.

Perry Johnson
5282 Partners

See how Doug Haffnieter can help you today!

(303) 443-8850

Get In Touch

7 + 14 =

doug haffnieter


1007 Pearl Street, Suite 260,
Boulder, Colorado, 80302



(303) 443-8850
‭(303) 589-1412‬ (cell or text)