Understanding Construction Estimates
Most board members have never read a construction estimate before a hurricane. This guide explains what you're looking at — CSI divisions, line items, overhead and profit — so you can ask better questions and catch problems before signing.
Why this matters
Florida boards regularly approve repair contracts where the estimate is missing critical scope, uses inflated labor rates, or applies excessive overhead and profit. Understanding estimates is your single most effective tool for protecting your community's money.
The Basics: What Is a Construction Estimate?
A construction estimate is a line-by-line breakdown of all the costs required to complete a repair or replacement project. It is not the same as a contract or a bill of quantities — it's a cost projection that forms the basis for the contract price.
A complete estimate has three components: materials (cost of everything that gets installed), labor (cost of the work to install it), and equipment (tools or machinery required). On top of those, contractors add overhead and profit.
CSI Divisions — The Standard Format
The Construction Specifications Institute (CSI) MasterFormat is the industry standard for organizing construction documents. Most professional estimates in Florida use this format. Here are the divisions most relevant to hurricane repair:
Project management, supervision, permits, insurance, temp facilities. Usually 5–10% of total cost.
Demolition, asbestos abatement, existing damage assessment. Often under-quoted.
Foundation repairs, structural concrete, parking garage repairs.
Stucco, concrete block, brick. Common damage in hurricanes.
Structural steel, metal railings, bar joists. Check for corrosion damage.
Wood framing, trusses, sheathing. Water damage assessment here.
Roofing, waterproofing, insulation. THE most hurricane-exposed division.
Windows, doors, storefronts, impact glass. Critical for hurricane damage.
Drywall, painting, flooring, ceiling tiles. Water damage often surfaces here.
Signage, mailboxes, toilet partitions, fire extinguishers.
Sprinkler systems. Often damaged in roof breaches.
Fixtures, water heaters, pipe repairs.
AC units, air handlers, ductwork. Salt water exposure is a major issue post-hurricane.
Panel replacements, wiring, lighting. Requires licensed electrician.
Site grading, drainage repair. Often needed after flooding.
If your contractor's estimate doesn't reference CSI divisions, ask why. An estimate without CSI formatting is harder to compare against benchmarks.
Overhead and Profit
Overhead covers the contractor's indirect costs: office staff, vehicles, insurance, bonds, estimating, project management. Profit is what the contractor earns for taking on the project. Together, they're often called "O&P" or "markup."
Typical O&P Ranges
Red Flag
A contractor charging 40–50% combined O&P is at the high end. Anything above that should be questioned and benchmarked. On a $500,000 project, a 10% difference in markup is $50,000.
Labor Costs — What to Benchmark
Labor costs in Florida construction estimates should be benchmarked against the RSMeans (now Gordian) 2026 data or the Florida Building Code prevailing wage rates. Here are typical hourly ranges for Florida hurricane repair labor (including fringe benefits):
| Trade | Hourly Range | Notes |
|---|---|---|
| General laborer | $28–$38/hr | Unskilled辅助 |
| Carpenter | $38–$55/hr | Framing, form work |
| Roofer | $42–$62/hr | Pitched and flat roof |
| Electrician | $52–$78/hr | Licensed journeyman |
| Plumber | $50–$74/hr | Licensed journeyman |
| HVAC technician | $48–$72/hr | Licensed |
| Painter | $35–$52/hr | Interior/exterior |
| Drywall finisher | $38–$55/hr | Tape, mud, sand |
| Concrete finisher | $40–$58/hr | Slabs, form work |
| Project manager | $65–$95/hr | Supervision |
Ranges include base wage + typical fringe benefits (health insurance, etc.). Rates vary by metro area — Miami-Dade and Broward run higher than rural counties. After major hurricanes, labor rates in the affected region spike 20–40% due to demand.
Common Estimate Problems to Catch
Items that are obviously needed but not included — e.g., gutters, window flashings, permit fees, dumpsters, temp utilities.
The same item appears in multiple line items, inflating the total.
Estimate says 10 squares of roofing when the actual roof area requires 15.
Unit costs that are above market rate (e.g., $12/sf for drywall when $6–8 is typical).
Asbestos, mold, rotted wood behind walls — none of these are visible but all cost money. A good estimate includes a contingency for concealed conditions.
Repairs after a hurricane should include a contingency (typically 10–15%) for unforeseen conditions. No contingency = surprise assessments.
Post-Hurricane Ian, many repairs must meet current FBC standards. If the estimate assumes pre-code work, the final cost will exceed the estimate.
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