Sebastian construction board fines MKW Builders $1,500 and bars permit pulls for six months after faulty window installations

The City of Sebastian Construction Board on July 31, 2025 found that MKW Builders, LLC — licensed contractor Mark Walker — failed to install impact windows and associated components at 113 Redgrave Drive in accordance with manufacturer product approvals and the Florida Building Code, and voted to impose $1,500 in administrative fines and a six-month ban on pulling building permits within Sebastian.

The finding followed presentations from the City building official, testimony from the homeowner and an explanation by MKW Builders. Pete Sweeney, counsel for the building department, introduced the department—s case and called Building Official Wayne Esselstine to present inspection findings and photographic evidence. Esselstine testified that during an on-site inspection he and staff discovered the mullion clips were not installed, screws were missing or too short, and flashing and sealant details required by the notice of acceptance (NOA) and Florida Building Code were not in place. "If they're not installed correctly, they're not gonna withstand the pressures they were designed for, that they've been tested for," Esselstine told the board.

The nut graf: The board concluded there was enough evidence of code violations, contractor incompetence and financial harm to the homeowner to justify administrative penalties under the City of Sebastian Code of Ordinances. The board also noted it will report its disciplinary finding to the state as required by Florida law.

Most important facts first: the building department's presentation summarized the permit and inspection history. Permit 24-4148 was issued for window and door replacement at 113…