| MARKEL HOMES, INC., Dissolved December 31, 2008Boulder, CO · Voluntarily Dissolved | Boulder, CO | Corporation | Nov 6, 1980 | Voluntarily Dissolved |
| MARKEL-MITCHELL LIMITEDLocation not reported, CO · Exists | Location not reported, CO | Partnership | Dec 31, 1984 | Exists |
| MONTCLAIR COURT, LLC, Dissolved January 1, 2001Boulder, CO · Administratively Dissolved | Boulder, CO | LLC | Feb 1, 1995 | Administratively Dissolved |
| 10,000 ARAPAHOE, L.L.C., Delinquent March 1, 2025Boulder, CO · Delinquent | Boulder, CO | LLC | Oct 1, 1996 | Delinquent |
| THE PARKSIDE MEADOW HOMEOWNERS ASSOCIATION, Dissolved February 7, 2001Boulder, CO · Voluntarily Dissolved | Boulder, CO | Nonprofit | Dec 22, 1998 | Voluntarily Dissolved |
| NIWOT MEADOW FARM, L.L.C., Delinquent October 1, 2024Boulder, CO · Delinquent | Boulder, CO | LLC | Dec 29, 1998 | Delinquent |
| 4900 10TH ST., L.L.C., Dissolved July 1, 2003Boulder, CO · Administratively Dissolved | Boulder, CO | LLC | Feb 24, 1999 | Administratively Dissolved |
| WILD RIDGE LLC, Dissolved December 7, 2004Boulder, CO · Administratively Dissolved | Boulder, CO | LLC | Jun 30, 1999 | Administratively Dissolved |
| HAWK RIDGE ESTATES, LLC, Delinquent June 1, 2010Boulder, CO · Delinquent | Boulder, CO | LLC | Dec 27, 1999 | Delinquent |
| 3035 KALMIA CT. LLC, Delinquent August 1, 2007Boulder, CO · Delinquent | Boulder, CO | LLC | Feb 17, 2000 | Delinquent |
| DAKOTA RIDGE VILLAGE, LLC, Delinquent December 1, 2023Boulder, CO · Delinquent | Boulder, CO | LLC | Jul 7, 2000 | Delinquent |
| S/V BANZAI, LLC, Delinquent September 1, 2006Boulder, CO · Delinquent | Boulder, CO | LLC | Jul 7, 2000 | Delinquent |
| MARKEL REALTY, LLC, Delinquent September 1, 2007Boulder, CO · Delinquent | Boulder, CO | LLC | Mar 8, 2001 | Delinquent |
| THE LODGE AT MIRAMONT, LLC, Delinquent October 1, 2008Boulder, CO · Delinquent | Boulder, CO | LLC | Apr 30, 2001 | Delinquent |
| ROCK SOLID, LLC, Delinquent September 1, 2006Boulder, CO · Delinquent | Boulder, CO | LLC | Jul 25, 2003 | Delinquent |
| LYONS VALLEY, LLC, Delinquent January 1, 2023Boulder, CO · Delinquent | Boulder, CO | LLC | Aug 26, 2003 | Delinquent |
| YEAGER FARM, LLC, Delinquent September 1, 2016Boulder, CO · Delinquent | Boulder, CO | LLC | Apr 29, 2004 | Delinquent |
| North End Properties, LLC, Delinquent September 1, 2017Boulder, CO · Delinquent | Boulder, CO | LLC | Apr 19, 2005 | Delinquent |
| 47th Street Investments, LLC, Delinquent January 1, 2013Boulder, CO · Delinquent | Boulder, CO | LLC | Aug 8, 2005 | Delinquent |
| East Boulder Investments, LLC, Delinquent January 1, 2025Boulder, CO · Delinquent | Boulder, CO | LLC | Aug 8, 2005 | Delinquent |
| West Ridge LLC, Delinquent July 1, 2020Boulder, CO · Delinquent | Boulder, CO | LLC | Feb 7, 2007 | Delinquent |
| MGK Development Corporation, Delinquent February 1, 2018Boulder, CO · Delinquent | Boulder, CO | Corporation | Sep 24, 2008 | Delinquent |
| Blue Water Adventures, LLC, Delinquent March 1, 2025Boulder, CO · Delinquent | Boulder, CO | LLC | Oct 26, 2009 | Delinquent |
| MGK SF, LLC, Delinquent October 1, 2016Boulder, CO · Delinquent | Boulder, CO | LLC | May 22, 2012 | Delinquent |
| MGK Duplex, LLC, Delinquent October 1, 2017Boulder, CO · Delinquent | Boulder, CO | LLC | May 22, 2012 | Delinquent |
| NFC 13, LLC, Delinquent April 1, 2017Boulder, CO · Delinquent | Boulder, CO | LLC | Jun 13, 2012 | Delinquent |
| 7600 Plateau, LLC, Delinquent October 1, 2023Boulder, CO · Delinquent | Boulder, CO | LLC | May 13, 2013 | Delinquent |
| GEM Marine, LLCBoulder, CO · Delinquent | Boulder, CO | LLC | May 23, 2013 | Delinquent |
| Welton Property Investments, LLC, Delinquent July 1, 2024Boulder, CO · Delinquent | Boulder, CO | LLC | Aug 13, 2013 | Delinquent |
| Mountain Vista Villages LLC, Delinquent March 1, 2025Boulder, CO · Delinquent | Boulder, CO | LLC | Apr 8, 2016 | Delinquent |
| Mountain Vista Villages & Tech Park LLC, Delinquent March 1, 2025Boulder, CO · Delinquent | Boulder, CO | LLC | Apr 8, 2016 | Delinquent |
| Substainable Community Development LLC, Delinquent April 1, 2019Boulder, CO · Delinquent | Boulder, CO | LLC | Nov 17, 2017 | Delinquent |