In its suit, Kast Construction III alleges that drywall and framing done by Titus Construction Group had "numerous deficiencies,’’ including incorrect ceiling heights and framing that was "generally out of plumb, unlevel and not square.’’

Kast, of West Palm Beach, said it had to hire other workers to finish Titus’ job, costing it additional time and materials. Also named as a defendant is a surety company that was supposed to pay Kast if Titus defaulted on its subcontract.

In its own suit, Titus says it is owed $3.647 million for work Kast demanded in addition to the original subcontract terms.

"We did quality work, and we deserve to be paid,’’ Titus president Nathan Pardue said Monday.

Pardue said Titus had finished most of its work on 32 floors of ONE St. Petersburg when Kast said it could not continue on the remaining floors unless it signed a letter agreeing that the work to date had been substandard.

"We didn’t agree that we did substandard work, and they said, ‘We’re bringing in another subcontractor to do the last floors,’ " Pardue said. His Fort Lauderdale-based company is still on the job, doing touch-ups that should be finished in about a month, he said.