- McIntire Garrison, c.1707 - York, York County
- Moody Homestead, 1790 - York, York County
- Captain James Morison House, c.1785 - Parsonsfield, York County
- First Church of Belfast, 1818 - Belfast, Waldo County
- Blackhawk Putnam Tavern, 1813 - Houlton, Aroostook County
- William Minott House, 1805/1807 - Portland, Cumberland County
- Alfred Shaker Historic District, 1796-1931 - Alfred, York County
- Adams-Cate House, 1815 - Castine, Hancock County
- Lincoln House, 1787 - Dennysville, Washington County
- Fort Halifax Blockhouse, 1754 - Winslow, Kennebec County
- Joseph and Hannah Maxcy Homestead, c.1802 - Union, Knox County
- Dresden Brick School House, 1816 - Dresden, Lincoln County
- Hall's Tavern, 1800 - Falmouth, Cumberland County
- Portland Head Light, 1791 - Cape Elizabeth, Cumberland County
- Nickels-Sortwell House, 1807-1808 - Wiscasset, Lincoln County
- Limington Historic District - Limington, York County
- Pettengill House and Farm, c.1800 - Freeport, Cumberland County
- Buxton Powder House, 1813 - Buxton, York County
- Federal Street Historic District - Brunswick, Cumberland County
- Godfrey Ludwig House, c.1800 - Waldoboro, Lincoln County
- Deacon Hutchins House, c.1802 - Rumford, Oxford County
- Manor House, 1797 - Naples, Cumberland County
- Ruggles House, 1820 - Columbia Falls, Washington County
- Daniel Marrett House, 1789 - Standish, Cumberland County
- Massachusetts Hall, 1798-1802 - Brunswick, Cumberland County
- Alfred Historic District - Alfred, York County
- Redington House, 1814 - Waterville, Kennebec County
- Crosby Street Historic District - Augusta, Kennebec County
- Off-the-Neck Historic District - Castine, Hancock County
- William Colburn House, c. 1780 - Orono, Penobscot County
- Kennebunkport Historic District - Kennebunkport, York County
- Salmon Falls East Historic District - Buxton, York County
- Laura Richards House, c.1810 - Gardiner, Kennebec County
- Weston Homestead, 1817-18 - Madison, Somerset County
- John Perkins House, 1765 - Castine, Hancock County
- Dennett Garrison, c.1710 - Kittery, York County
- Lithgow House, c.1818 - Dresden, Lincoln County
- Lt. John Hathorn House, 1784 - Woolwich, Sagadahoc County
- Sam Perley Farm, 1809 - Naples, Cumberland County
- Kate Douglas Wiggin House (Quillcote), 1797 - Hollis, York County
- New Gloucester Historic District - New Gloucester, Cumberland County
- Topsham Historic District - Topsham, Sagadahoc County
- Wallingford Hall, 1804 - Kennebunk, York County
- Parson Smith House, 1764 - Windham, Cumberland County
- Thomas Hobbs, Jr. House, 1763 - North Berwick, York County
- Barrows-Steadman Homestead, c. 1809 - Fryeburg, Oxford County
- Archibald-Adams House, c.1790 - Cherryfield, Washington County
- Peter Powers House, 1785 - Deer Isle, Hancock County
- Paris Hill Historic District - Paris, Oxford County
- Lt. Robert Andrews House, 1805 - Bridgton, Cumberland County
- George Ulmer House, c.1799 - Lincolnville, Waldo County
- Jed Prouty Tavern & Inn, c.1783 - Bucksport, Hancock County
- Sarah Orne Jewett House, 1774 - South Berwick, York County
- Conway House, c.1770 - Camden, Knox County
- Chestnut Street Historic District - Camden, Knox County
- Mitchell House, c.1800 - Yarmouth, Cumberland County
- Wiscasset Historic District - Wiscasset, Lincoln County
- Stroudwater Historic District - Portland, Cumberland County
- Todd House, c.1781 - Eastport, Washington County
- Jacob Randall Homestead, c.1796-1804 - Pownal, Cumberland County
- Fort Sullivan, 1808 - Eastport, Washington County
- Intervale Farm, c.1811-1953 - New Gloucester, Cumberland County
- South Street Historic District - Gorham, Cumberland County
- Saco Historic District - Saco, York County
- McLellan House, 1773 - Gorham, Cumberland County
- Chaloner House, c.1818 - Lubec, Washington County
- Abel Jones House, 1815 - China, Kennebec County
- Powder House Lot, c.1820 - Hallowell, Kennebec County
- John Watson House, c.1785 - Hiram, Oxford County
- Elder Grey Meeting House, 1806 - North Waterboro, York County
- Old Morrell House, 1763 - North Berwick, York County
- Hunnewell-Shepley House, 1805 - Portland, Cumberland County
- General Peleg Wadsworth House, c.1800 - Hiram, Oxford County
- Hunniwell House, c.1702 - Scarborough, Cumberland County
- Tufts House, 1810 - Farmington, Franklin County
- First Congregational Church, Parsonage, & Old Burying Ground, 1728-1730 - Kittery, York County
- James Smith Homestead, 1753 - Kennebunk, York County
- Holmes-Craft Homestead, c.1820 - Jay, Franklin County
- Belfast Historic District - Belfast, Waldo County
- Alna Schoolhouse, 1795 - Alna, Lincoln County
- Limerick Upper Village Historic District - Limerick, York County
- Middle Intervale Meeting House and Common, 1816 - Bethel, Oxford County
- Lermond Mill, 1803 - Union, Knox County
- Lovell Meeting House, 1796 - Lovell, Oxford County
- Dennysville Historic District - Dennysville, Washington County
- Acadian Historic Buildings (Roy House) - Van Buren, Aroostook County
- First Baptist Church, 1803 - Waterboro, York County
- Fort Pownall, 1759 - Stockton Springs, Waldo County
- Sargent-Roberts House, 1814 - Bangor, Penobscot County
- Holmes Cottage, c.1820 - Calais, Washington County
- Powers House, c.1770 - Sidney, Kennebec County
- McLellan-Sweat Mansion, 1800-01 - Portland, Cumberland County
- Higgins Barn, c. 1810 - Bar Harbor, Hancock County
- Salmon Falls West Historic District - Hollis, York County
- Cover Farm, c.1810 - Bar Harbor, Hancock County
- Burnell Tavern, 1737 - Baldwin, Cumberland County
- Gorham Historic District - Gorham, Cumberland County
- Nathaniel Osgood House, c.1785 - Durham, Androscoggin County
- Blue Hill Historic District - Blue Hill, Hancock County
- Falmouth House, c.1820 - Falmouth, Cumberland County
- Bourne Mansion, 1812 - Kennebunk, York County
- North Yarmouth & Freeport Baptist Meeting House, 1796 - Yarmouth, Cumberland County
- Portland Observatory, 1807 - Portland, Cumberland County
- Libby-MacArthur House, c.1790 - Limington, York County
- Martin Kinsley House, c.1797 - Hampden, Piscataquis County
- Squire Ignatius Haskell House, 1793 - Deer Isle, Hancock County
- Benjamin Wiley House, c.1790 - Fryeburg, Oxford County
- Col. Meltiah Jordan House, 1817 - Ellsworth, Hancock County
- Brown House, 1815 - Brownville, Piscataquis County
- Osgood Family House, c.1810 - Fryeburg, Oxford County
- Burnham Tavern, 1770 - Machias, Washington County
- Fort O'Brien, c.1775 - Machiasport, Washington County
- Standish Corner Historic District - Standish, Cumberland County
- Brickett Place, 1812 - Stow, Oxford County
- John Sedgley Homestead, c.1715 - York, York County
- John B. Russwurm House, c.1810 - Portland, Cumberland County
- Goold Family House, c.1820 - Windham, Cumberland County
- Peabody Tavern, c.1800 - Gilead, Oxford County
- Royal Brewster House, 1805 - Buxton, York
- Richard Manning House, 1813 - Casco, Cumberland County
- Lincolnville Center Meeting House, 1820-1821 - Lincolnville, fb88
- Merrill-Poor House, c.1791 - Andover, Oxford County
- Blossom House, c.1808 - Monmouth, Kennebec County
- Tappan-Viles House, 1816 - Augusta, Kennebec County
- Major Reuben Colburn House, 1765 - Pittston, Kennebec County
- Levi Sargent House, c.1812 - Otisfield, Oxford County
- Old German Church and Cemetery, 1772 - Waldoboro, Lincoln County
- Lord Mansion, c.1760, c.1801 - Kennebunk, York County
- Porter Old Meeting House, 1818 - Porter, Oxford County
- York Historic District - York, York County
- Riverview House, 1796, 1832 - Vassalboro, Kennebec County
- Senator John Holmes House, 1802 - Alfred, York County
- McWain-Hall House, c.1800 - Waterford, Oxford County
- Brown-Pilsbury Double House, c. 1808 - Bucksport, Hancock County
- Bucknam House, c.1792 - Columbia Falls, Washington County
- Dr. Moses Mason House, 1813-15 - Bethel, Oxford County
- Elden's Store, 1802 - Buxton, York County
- William Pepperrell House, 1682, c.1720-1848 - Kittery, York County
- Vaughan Homestead, 1797, 1836 - Hallowell, Kennebec County
- Samuel Bucknam House, 1820-1821 - Columbia Falls, Washington County
- Alna Meeting House, c.1789 - Alna, Lincoln County
- Churchill Bridge, 1797 - Buckfield, Oxford County
- Moses Carleton House, c.1810 - Alna, Lincoln County
- Fort Western, 1754 - Augusta, Kennebec County
- Valley Lodge, 1788 - Baldwin, Cumberland County
- Daniel Weston Homestead, c.1806 - Bremen, Lincoln County
- U.S. Customs House, 1813 - Kennebunkport, York County
- Peacock Tavern, 1807- Richmond, Sagadahoc County
- China Village Historic District - China, Kennebec County
- First Parish Meeting House, 1758 - Biddeford, York County
- John Tarr House, c.1730 - Biddeford, York County
- Old York Gaol, 1707-1806 - York, York County
- Nathaniel & Elizabeth Bennett House, c.1792 - Norway, Oxford County
- Dr. Samuel Quimby House, c.1800 - Mount Vernon, Kennebec County
- Nutting Homestead, c.1796 - Otisfield, Oxford County
- Coburn School, c.1815 - Pittston, Kennebec County
- Stearns Hill Farm, c.1818-1958 - West Paris, Oxford County
- Pote House, c.1750 - Freeport, Cumberland County
- Harraseeket Historic District - Freeport, Cumberland County
- Waldoborough Town Pound, 1819 - Waldoboro, Lincoln County
- Blazo-Leavitt House, c.1812-1817 - Parsonsfield, York County
- Cherryfield Historic District - Cherryfield, Washington County
- Brick School, c.1810 - Winslow, Kennebec County
- Enoch Hall House, c.1800 - Buckfield, Oxford County
- Lady Pepperrell House, 1760 - Kittery, York County
- Days Ferry Historic District - Woolwich, Sagadahoc County
- Friends Meeting House, 1814 - Casco, Cumberland County
- Levi Foss House, c.1815 - Dayton, York County
- Robert Carleton House, c. 1815 - Sangerville, Piscataquis County
- Red Brick School, 1807 - Wiscasset, Lincoln County
- Burgess House, c. 1816 - Sebec, Piscataquis County
- Sedgwick Historic District - Sedgwick, Hancock County
- Norway Historic District - Norway, Oxford County
- Head Tide Historic District - Alna, Lincoln County
- Elm Hill Farm, 1799 - Hallowell, Kennebec County
- George Tate House, 1755 - Portland, Cumberland County
- Fort George, c. 1779 - Castine, Hancock County
- Wadsworth-Longfellow House, 1785-86 - Portland, Cumberland County
- McCobb-Hill-Minott House, 1774 - Phippsburg, Sagadahoc County
- Squire Chase House, c.1767 - Fryeburg, Oxford County
- Nathaniel Dyer House, 1803 - Portland, Cumberland County
- Parker Cleaveland House, 1805-1806 - Brunswick, Cumberland County
- Parson Fisher House, 1814 - Blue Hill, Hancock County
- Fort Edgecomb, c.1808 - Edgecomb, Lincoln County
- Lower Alewive Historic District - Kennebunk, York County
- Stephen Coffin House, c.1803 - Damariscotta, Lincoln County
- Auld-McCobb House, c.1807 - Boothbay Harbor, Lincoln County
- Farmington Historic District - Farmington, Franklin County
- Knight-Corey House, 1784 - Boothbay, Lincoln County
- Winthrop Street Historic District - Augusta, Kennebec County
- South Berwick Village Historic District - South Berwick, York County
- Turner Cattle Pound, 1816 - Turner, Androscoggin County
- Arch Bridge, Pre-1857 - Bristol, Lincoln County
- Louis I. Bussey School, c. 1808 - Dixmont, Penobscot County
- St. Patrick's Catholic Church, c.1807 - Newcastle, Lincoln County
- Old Grist Mill, 1774 - Lebanon, York County
- Bagley-Bliss House, c.1770 - Durham, Androscoggin County
- College Club Inn, c.1800 - Searsport, Waldo County
- John Hancock Warehouse, c.1750 - York, York County
- Jonathan Hamilton House, c.1788 - South Berwick, York County
- Hallowell Historic District - Hallowell, Kennebec County
- Black Horse Tavern, c.1795 - Belfast, Waldo County
- Temple Intervale School, 1810 - Temple, Franklin County
- Old Walpole Meeting House, 1772 - South Bristol, Lincoln County
- Old Red Church, 1804 - Standish, Cumberland County
- Governor Kavanagh House, c.1803 - Newcastle, Lincoln County
- Sproul Homestead, 1749, 1815, 1833 - South Bristol, Lincoln County
- Baxter House, c.1805 - Gorham, Cumberland County
- Captain Nathaniel Lord House, 1812 - Kennebunkport, York County
- Ebenezer Alden House, 1797- Union, Knox County
- Harrington Meeting House, 1775 - Bristol, Lincoln County
- Squire Tarbox House, 1763, 1819-1820 - Westport, Lincoln County
- Dyer-Hutchinson Farm, c.1790 - Cape Elizabeth, Cumberland County
- Governor William King House, c. 1812- Bath, Sagadahoc County
- Chapman-Hall House, 1754 - Damariscotta, Lincoln County
- Great Falls Historic District - Windham, Cumberland County
- Spring Street Historic District - Portland, Cumberland County
- Old School House, 1755 - York, York County
- Randall-Hildreth House, 1800 - Topsham, Sagadahoc County
- Stephen Longfellow House, 1761 - Gorham, Cumberland County
- East Machias Historic District - East Machias, Washington County
- Pownal Cattle Pound, c.1818 - Pownal, Cumberland County
- Boynton Street Historic District - Eastport, Washington County
- Nathaniel Hawthorne's Boyhood Home, c.1812 - Raymond, Cumberland County
- The Common, 1790 - Union, Knox County
- David Warren House, c.1805 - Hartford, Oxford County
- Parker House, c. 1816 - Blue Hill, Hancock County
- Benjamin Riggs House, c.1790 - Georgetown, Sagadahoc County
- Academy Building, 1806 - Gorham, Cumberland County
- Heal Family House, c.1798 - Georgetown, Sagadahoc County
- Main Street Historic District - Fryeburg, Oxford County
- Stone School House, c.1820 - Georgetown, Sagadahoc County
- Tarr-Eaton House, c.1783 - Harpswell Center, Cumberland County
- Wiscasset Jail, 1811 - Wiscasset, Lincoln County
- Cushing and Hannah Prince House, c.1785 - Yarmouth, Cumberland County
- Paul Family Farm, c.1805 - Eliot, York County
- Paine Neighborhood Historic District - Standish, Cumberland County
- Gates House, 1807 - Machiasport, Washington County
- Philip Leach House, c.1805 - East Vassalboro, Kennebec County
- Samuel Weston Homestead, 1798 - Skowhegan, Somerset County
- Matthew Cottrill House, 1801 - Damariscotta, Lincoln County
- Elisha Purington House, 1761 - Falmouth, Cumberland County
- Harpswell Meetinghouse, c.1757 - Harpswell, Cumberland County
- Thomas Skelton House, c.1800 - Falmouth, Cumberland County
- Harper Family House, c.1809 - Limerick, York County
- Salome Sellers House, c. 1772-1830 - Deer Isle, Hancock County
- Pownalborough Courthouse, c.1760 - Dresden, Lincoln County
- Eastern Cemetery, 1668 - Portland, Cumberland County
- How Houses, 1799-1818 - Portland, Cumberland County
- Waterford Historic District - Waterford, Oxford County
- John Dunlap House, c.1798 - Brunswick, Cumberland County
- Joseph Holt Ingraham House, 1801 - Portland, Cumberland County
- General Alexander Campbell House, 1790 - Cherryfield, Washington County
- John Moore House, c.1741 - Edgecomb, Lincoln County
- Fuller-Weston House, 1818 - Augusta, Kennebec County
- Robinson-Parsons House, c.1795,1803 - Paris, Oxford County
- Deacon Andrew Dunning House, c.1757- North Harpswell, Cumberland County
- John Davis House, 1815-1820 - Chelsea, Kennebec County
- Barrell Homestead, c.1720 - York, York County