Kane County
- Aurora, Big Woods School, 3033 North Eola Road (letter of agreement)
- Aurora, Chicago, Burlington & Quincy Railroad, Roundhouse & Shops, Broadway & Spring Streets (HAER IL-8)
- Aurora, Downer Place Bridges (HIER K-2011-1)
- Batavia, Burke House, Washington Street (HABS IL-163)
- Batavia, United Methodist Church of Batavia, 8 North Batavia Avenue (HABS IL-1135)
- Campton Hills, Garfield Farm and Tavern (easement) (covenant, EXPIRED)
- Carpentersville, Star Manufacturing Company, 2 East Main Street (HABS IL-1260)
- Elburn, Byron Kendall Farmstead (HIBS K-2007-1)
- Elgin, A. B. Hinsdell House, 443 East Chicago Street (HABS IL-26-10)
- Elgin, Elgin Academy (covenant, EXPIRED)
- Elgin, Elgin Fire Barn No. 5, 533 Saint Charles Street (HABS IL-335)
- Elgin, Elgin Mental Health Center (Cover Document) (HIBS K-1998-3)
- Elgin, Elgin Mental Health Center, Barber & Beauty Shop (Industrial Building) (HIBS K-1998-3-G)
- Elgin, Elgin Mental Health Center, Carpenter's Shop (HIBS K-1998-3-H)
- Elgin, Elgin Mental Health Center, Carriel Hall (Employees' Building) (HIBS K-1998-3-T)
- Elgin, Elgin Mental Health Center, Cold Storage Building (HIBS K-1998-3-L)
- Elgin, Elgin Mental Health Center, Davidson, Workshop Annex, Wilson, Halloran and MacArthur Buildings (HIBS K-1994-1)
- Elgin, Elgin Mental Health Center, Dispatcher's Office (HIBS K-1998-3-I)
- Elgin, Elgin Mental Health Center, Farm Colony (HIBS K-1992-1)
- Elgin, Elgin Mental Health Center, Fire Station (HIBS K-1998-3-Q)
- Elgin, Elgin Mental Health Center, Hawley Cottage (HIBS K-1998-3-X)
- Elgin, Elgin Mental Health Center, Hirsh Cottage (HIBS K-1998-3-Z)
- Elgin, Elgin Mental Health Center, Holden Cottage (HIBS K-1998-3-AA)
- Elgin, Elgin Mental Health Center, Jenks Cottage (HIBS K-1998-3-W)
- Elgin, Elgin Mental Health Center, Main (Center) Building (HIBS K-1993-1)
- Elgin, Elgin Mental Health Center, Mason & Plaster's Building (Horse Barn) (HIBS K-1998-3-E)
- Elgin, Elgin Mental Health Center, Nurses' Home (Dormitory for Employees) (HIBS K-1998-3-U)
- Elgin, Elgin Mental Health Center, Old Bakery (HIBS K-1998-3-P)
- Elgin, Elgin Mental Health Center, Old Hospital Building (HIBS K-1998-2)
- Elgin, Elgin Mental Health Center, Old Laundry (HIBS K-1998-3-M)
- Elgin, Elgin Mental Health Center, Pinel Cottage (HIBS K-1998-3-B)
- Elgin, Elgin Mental Health Center, Power House (HIBS K-1998-3-N)
- Elgin, Elgin Mental Health Center, Read Building (HIBS K-1998-1)
- Elgin, Elgin Mental Health Center, Ricketts Hall (Employees' Building) (HIBS K-1998-3-S)
- Elgin, Elgin Mental Health Center, Root Cellar (HIBS K-1998-3-BB)
- Elgin, Elgin Mental Health Center, Shop Building (HIBS K-1998-3-O)
- Elgin, Elgin Mental Health Center, Souster Cottage (HIBS K-1998-3-Y)
- Elgin, Elgin Mental Health Center, Staff House (HIBS K-1998-3-V)
- Elgin, Elgin Mental Health Center, Storage Warehouse (Mattress & Paint Shop) (HIBS K-1998-3-F)
- Elgin, Elgin Mental Health Center, Studio Building (Old Pathology Laboratory & Morgue) (HIBS K-1998-3-K)
- Elgin, Elgin Mental Health Center, Vending Building (Old Housekeeping) (HIBS K-1998-3-D)
- Elgin, Elgin Mental Health Center, White Cottage (HIBS K-1998-3-C)
- Elgin, Elgin Mental Health Center, Wines Cottage (HIBS K-1998-3-A)
- Elgin, Elgin Mental Health Center, Wittman (Veteran's Building) (HIBS K-1998-3-J)
- Elgin, Elgin Mental Health Center, Woods Cottage (Women's Cottage) (HIBS K-1998-3-R)
- Elgin, James A. & Sarah A. Palmer Residence, 326 East Chicago Street (covenant, EXPIRED)
- Elgin, John Schmidtke House, 35W655 Tollgate Road (HIBS K-2022-1)
- Geneva, Bristol Farmhouse, River Road (HABS IL-26-22)
- Geneva, Captain Wells House, South Third Street (HABS IL-138)
- Geneva, Old Unitarian Church, Second & James Streets (HABS IL-164)
- LaFox, Garfield Farm (HIBS K-2006-1)
- LaFox, Potter and Barker Grain Elevator, 1N298 LaFox Road (covenant)
- St. Charles, Dr. James K. Lewis House, 19 South Fifth Street (HABS IL-26-9)
- St. Charles, Hotel Baker, 100 West Main Street (letter of agreement, EXPIRED)
- St. Charles, Jucket House, 110 Third Street (HABS IL-162)
- St. Charles, Illinois Youth Center, Harding Cottage (HIBS K-2002-1B)
- St. Charles, Illinois Youth Center, Mill Shed (HIBS K-2002-1C)
- St. Charles, William Beith House, 8 Indiana Street (covenant, EXPIRED)
- West Chicago, Bradley-Bork Farm, Barn, 32W660 Fabyan Parkway (HABS IL-1274)
- West Dundee vicinity, Main Street Bridge, spanning Fox River at State Route 72 (HAER IL-128)