One of the most prestigious of Klutho's works was the design of the new mansion for Florida Governor, Napoleon Bonaparte Broward, a native of Jacksonville.
A new mansion had been under discussion since 1903, but the state legislature did not appropriate the necessary funds until 1905 - perhaps finally forced to do so because the Governor and Mrs. Broward had seven daughters, and they could no longer continue living in boarding houses. The legislature appropriated $25,0000. Klutho was chosen as the architect for the mansion in late 1905 and worked closely with the governor and the mansion commission in the design.2
The all wood mansion "suffered in the hot, humid Florida weather...By 1955 the old mansion was finally dismantled."3
Auction at the Executive Residence before its demolition - Tallahassee, Florida. 1955. State Archives of Florida, Florida Memory, accessed 21 June 2023.
Though Klutho had not been successful in his attempt to make Arlington (Jacksonville), the capital of Florida, in 1921 he was commissioned to design two new wings, the east and west, for the Capitol Building in Tallahassee. "The existing structure contained a central rotunda entered through a portico with six Doric columns and the-story wings to the north and south containing the senate and house chambers and offices."5 
Pictured above: Three views of the second permanent Capitol - Tallahassee, Florida. 1925. State Archives of Florida, Florida Memory, accessed 20 June 2023.
Klutho was charged to maintain as much as possible of the original style while adding 80 percent more space, which he did by adding the new wings to old structure and by retaining the original Doric design. "Inside he removed the stairs under the rotunda and replaced them to the west with a marble staircase decorated with wrought-iron inserts and rosettes. He added marble wainscoting in the main halls to compliment the staircase..."In the early 1960s a decision was made to demolish the original Capitol in favor of a new high-rise...This effort was defeated and instead funds were voted by the Legislature to restore the building to its 1903 status. Unfortunately, this required the demolition of Klutho's work."6
Klutho's political aspirations were reflected in his statement, "there was a big flare-up in the papers about removal of the State Capitol to a more central part of the state. So I figured 'why not Jacksonville?" with Arlington as the ideal site...with write-up was taken seriously, by both parties from the southern part of the state and I was asked to run for Governor..." Klutho never actually got to run for governor, however, and the Florida's capitol remained in Tallahassee.1
1. Robert C. Broward. The Architecture of Henry John Klutho : the Prairie School in Jacksonville. Rev. 2nd ed. (Hartley, Pr. Jacksonville, FL), 219 - 220.
2. Ibid., 47
3. https://www.floridagovernorsmansion.com/content/download/56053/236967/version/5/file/mansion_architecture_teaching_plan.pdf.
4. https://www.floridacapitol.myflorida.com/the_capitol/capitol_history.
5. The Historic Capitol of Florida [brochure]. Florida Historic Capitol Museum Website. accessed June 14, 2023, https://www.flhistoriccapitol.gov/Documents/brochure.pdf.
6. Broward, 220.