Historic Boulder's accomplishments include the following preservation projects in both the city and the county of Boulder.

• The Arnett-Fullen House. House and gardens (ongoing since 1993, acquisition and restoration, landmarked over objection). Fence grant 1998-2002.
• The Depot.
• Monteau-Geer Farm designation, stabilization, 2000.
• Stroh-Dickens Hall, 1997-98.
• Grants Hall, 1997-98.
• Grasso Project, Superior 1997-99, roof reconstruction, CHS grant, Jack Smith historian.
• Gold Hill, 1999, application for landmark designation St. James Chapel, 1996-98 (Gold Hill Historic Museum).
• Sunshine School, 1999.
• Walker Ranch, 1998, silo and granary.
• Betasso, Boulder County, building restoration with county, 1997.
• Ward Post Office, 1996-98.
• Roar Houses restoration/instruction and publication of book.
• Morse Well commemoration, 1997-2002.
• 1733 Canyon, restoration, rehabilitation, ownership, mid-1980s.
• Highlands School, 1973, ownership and rehabilitation.
• Central School, 1972, lost.
• Boulder Theatre, 1976, brief ownership and easements.
• Preserving the Mount St. Gertrude Academy, Boulder.
• Ensuring that downtown Boulder and the Hillside neighborhood received historic designation.
• University Hill Historic District designation, assist and advisory to City, 2002.
• Mapleton Hill.
• Sunrise Amphitheater renovation, 2002.
• Renovation and designation of the Columbia Cemetery, 1994-95.
• A survey and interpretive plan for the city of Boulder for the Boyd Smelter archaelogical site. 1999-2002.
• Assistance in negotiations for the preservation of the Grandview Terrace, resulting in two blocks of buildings being preserved and a Memorandum of Understanding with the Universty of Colorado that will permit inclusion of preservation groups in future planning, 1998-2002.

Historic Boulder also has assisted neighboring communities to preserve their traditions and structures.

• JohnsonÕs Corner South, Longmont, 2002.
• Ewing Farm, Lafayette, 1997
• Developing a Preservation Master Plan for Louisville and helping Louisville develop walking tours.
• Eldorado Springs, educational pamphlet, 2002.
• Lafayette Mining Museum, 1999.
• Thomas Grain Elevator, Louisville, 1996.
• Gillaspie House, Nederland, 1999, now Nederland History Museum.
• A historic building assessment for the Little Church in the Pines in Salina 2001-02.
• A survey of approximately 30 historic sites in the Town of Superior, 2001-02.
• Stabilization of the Blue Jay Mine in Jamestown and a survey of mine adits disappearing throughout Boulder County, 2002.
• Identification of a potential discontiguous metal mining district throughout Boulder County.
• Cardinal Mill, Nederland, 2001.
• Wall Street Assay Office, 2001.
• Railroad Days.
• Barn Again!
• Nominated the Hall Ranch complex in Lyons for a Boulder County Landmark, 1998.
• Rock Creek Farm in Broomfield, 1998, restoration.
• Including the Lohr-MacIntosh Farm outside Longmont, 1997. Now experiencial, handson park for City of Longmont.
• Landmarking the MacKenzie Well Site, 2002.
• Preservation of Bunce School, Allenspark, 1997.
• The Wise family homestead in Erie.
• Worked with the town of Superior to stabilize the Hake Homestead House,1998.
• Nederland Stone Garage, restoration, 1997-98, now Nederland Mining Museum.