Substantial Damage and the FEMA 50 Percent Rule: In a special flood hazard area, a building is considered substantially damaged where the cost of repairing it to its pre-damage condition reaches 50 percent or more of the market value of the structure before the damage, counting the structure only and not the land. Once that determination is made, the building must be brought into compliance with current floodplain management standards, which generally means elevating the lowest floor above base flood elevation plus any required freeboard. Communities may adopt a stricter threshold than the federal minimum, so the local rule is the one that governs.
What Counts Toward the Threshold: The measure is the cost of repairing the damage, not the cost of the compliance work the determination triggers. Rolling elevation cost into the repair estimate inflates the very number that decides substantial damage, which is circular and has been the subject of dispute. Keeping repair scope and compliance scope separately costed in your records is what makes the distinction demonstrable rather than arguable.
Florida Construction Lien Law and the Notice to Owner: A lienor without a direct contract with the owner generally must serve a Notice to Owner within 45 days of first furnishing labor or materials in order to preserve lien rights, and missing the window usually ends the claim regardless of the merits of the debt. We are not attorneys and we do not serve notices. We record first-furnishing dates by job as routine bookkeeping so the clock is visible in the records rather than reconstructed later.
Sales Tax on Materials: For most real property improvement work in Florida the contractor is treated as the consumer of the materials and pays tax on purchase rather than charging the customer sales tax on the contract. The treatment can vary with how the contract is written and what is being installed, so it is worth confirming rather than assuming across a mixed book of work. Either way material tax is a job cost and belongs on the job, because in overhead it silently understates every bid built from historical cost.
Contractor Licensing and Insurance: Florida licenses construction contractors at state and county level through the Construction Industry Licensing Board and local boards, with financial responsibility and insurance obligations attached. In Southwest Florida the insurance side has become a material cost of doing business rather than a formality. Licensing, bond and insurance costs belong in a properly calculated overhead rate, otherwise your bids are quietly carrying less than they need to.
Retainage on Florida Contracts: Florida sets limits on retainage for public construction contracts and provides for reduction as work progresses, while private contracts are governed by their own terms and vary widely. Retainage buried inside accounts receivable is retainage nobody is chasing, and it also misrepresents your liquidity to a lender or surety reading the balance sheet carefully.