On February 2, 1925, he announced that he would seek the Republican nomination for mayor and was given the nomination by unanimity on February 11. Beecher defeated former Mayor James E. Burke of the Citizens Party and President of the Board of Alderman George L. Edwards of the Nonpartisan League and Democratic Party with 2,429 votes to 1,845 votes and 994 votes. During his tenure the Burlington City Hall, Memorial Auditorium, Central Fire Station, and the Winooski Bridge were all constructed and he managed recovery in Burlington following the Great Vermont Flood of 1927. In 1927, he narrowly defeated James E. Burke again by only 89 votes with 3,191 votes to 3,108 votes. Due to the closeness of the election Burke filed a lawsuit attempting to remove Beecher from office, but the Vermont Supreme Court ruled in Beecher's favor on January 2, 1929, although it decreased his vote total to 3,016. He chose not to run for reelection in 1929 and was succeeded by former Mayor John Holmes Jackson.