Besides the several parks and parkways, Olmsted and his successor firms designed a number of other projects in Buffalo which were constructed or proposed over the years.
- Parkside subdivision, 1872-1886 (partially completed).
- Parkside Land and Improvement Company, 1866 (developers of Highland Parkside neighborhood.
- Hyde Park Land Syndicate, 1885-1890 (developers of western portion of Parkside tract) (plans not located).
- Niagara Square, 1874 (partially constructed?), design reworked, 1895 (not constructed)
- City and County Hall (now Old Erie County Hall), 1875-1878 (the grounds facing Delaware avenue were destroyed in 1963 by a building addition).
- New York State Asylum for the Insane (now the Buffalo Psychiatric Center, the Richardson-Olmsted Complex, and Buffalo State College), ca. 1877 (partially destroyed by building additions).
- Lafayette Square, 1883, (landscape plan, destroyed by street realignment project in 1913).
- Villa Park subdivision, 1885-1887. (Street plan intact.)
- South Park (original proposal), 1886 (not constructed).
- Additions to The Front, 1887-1891 (partially constructed).
- John J. Albright residence, 730 West Ferry Street, Buffalo, NY 1890-1907 (demolished in 1935). (Albright was a principal in the firms which created the village of Depew for which Olmsted was engaged to create the street layout, and he was also a business partner of Wm. A. Rogers and of Edmund B. Hayes. Albright and Hayes were principals in the Ontario Power Company.).
- Edmund B. Hayes residence, 147 North Street, Buffalo, NY, 1891-1893 (lost). (Hayes was a business partner of John J. Albright.).
- William A. Rogers residence, 309 North Street, Buffalo, NY, 1893-1895 (lost). (Wm. A. Rogers was a business partner of John J. Albright.),
- Robert W. Pomeroy residence, 70 Oakland Place, Buffalo, NY, 1896 or 1897 (plans not located, landscape status unknown)
- Robert Livingston Fryer residence, 685 Delaware Avenue, Buffalo, NY, 1900-1901. (Fryer was a son-in-law to Pascal P. Pratt.)
- Spencer Kellogg, Sr. residence, 805 Delaware Avenue, Buffalo, NY, 1904 (lost, site presently occupied by Temple Beth Zion).
- Buffalo Civic Center, 1919 (not constructed).
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