JB Sullivan Construction Corp. completed renovations to the Thatcher Montessori School.?Partnering with the architectural firm of John Catlin & Associate, the Sullivan team led by project manager, Rob Johnstone, completed the construction of a 9,000 s/f ?second story on the existing facility and replaced windows, doors, and siding making the facility more energy efficient. Work included demolition, installation of moveable partitions, lockers, ?electrical and plumbing upgrades, and the reworking of the parking area.