A handful of voters turned out for a special Bridgehampton Fire District referendum Tuesday night, approving the district’s plan to renovate the interior of the firehouse on School Street. In a 23-to-3 vote, a resolution to approve a 15-year bond at a maximum of $750,000 to renovate the kitchen and offices, add women’s bathrooms, renovate the recreation area in the basement, and make other repairs was passed. No plans have been announced yet for the former Pulver Gas building on Main Street, which the district purchased in 2011 for $3.9 million. Earlier that year, the district shelved an $8 million proposal to renovate the headquarters. The Town of Southampton has already issued a building permit for the firehouse renovation, and work is set to begin this month. Brad Pinsky, the fire district’s attorney, was unavailable yesterday for comment. Ray Topping, the chairman of the board of fire commissioners, did not return a call for comment.