Construction companies in Miami: 6,754 firms, Miami-Dade's own rules, and how to hire one

This report is for property owners, developers and managers hiring a contractor in Miami-Dade, people researching the local construction market, and B2B sellers whose customers are builders and trade contractors: suppliers, equipment dealers, insurers, staffing and software firms.

Miami-Dade construction in Census data

County Business Patterns 2023 covers NAICS 23 (Construction) in Miami-Dade County, Florida.

What they build

The same dataset splits the county's construction firms by type:

The building rows add up to the 2,009 building construction establishments in NAICS 236; heavy and civil construction (237) has 268 in all, including types not shown separately. Specialty trades (238) are 4,477 establishments with 29,390 employees, about two thirds of both. Building equipment contractors (electricians, plumbers, HVAC) are the largest single group, with 14,820 employees. Residential builders are numerous but tiny, at under four employees each; nonresidential builders average about 11, and highway contractors about 53.

Size

The two top cells are withheld by the Census Bureau to protect confidentiality; the published classes add up to 6,752, so two establishments have 500 or more employees. In broader bands: 6,261 establishments have 1 to 19 employees, 439 have 20 to 99, and 54 have 100 or more.

What the count leaves out

County Business Patterns counts establishments with paid employees, not companies. A contractor with offices in Miami and Doral counts twice, and the many self-employed tradespeople and one-person contractors with no payroll aren't counted, so the number of licensed contractors working in the county is higher. Firms are counted where their office is, not where they build, so Broward-based contractors working in Miami are excluded. Employment is the week of March 12, 2023.

Two layers of licensing

Florida's Department of Business and Professional Regulation licenses contractors in two ways, defined in section 489.105 of the Florida Statutes. A certified contractor can work anywhere in the state; a registered contractor only where it holds a local certificate of competency. Look either up in the DBPR license search.

Miami-Dade adds its own layer. Its Contractor Licensing Section licenses contractors and tradesmen working in the county, in building, building specialties, electrical, maintenance, mechanical and plumbing categories, under the authority of the county's Construction Trades Qualifying Board. County certificate holders must also register with DBPR where Chapter 489 requires it, or lose permitting privileges. Check a county license in Miami-Dade's contractor search, which also shows complaints.

Hurricane rules: product approvals

Miami-Dade's Product Control Section reviews building envelope products: windows, exterior glazing, wall cladding, roofing, exterior doors and shutters. Approved products get a Notice of Acceptance (NOA), which states compliance with the Florida Building Code, including its High Velocity Hurricane Zone provisions, and carries an expiration date. Florida law also names the county's product control division as an approved evaluation entity for statewide product approval. Search approvals in the Product Approval Search, and ask any window, door or roofing contractor for the NOA numbers of what they plan to install.

Recertification: a steady source of work

Under Section 8-11(f) of the County Code, buildings become subject to recertification at 30 years and every 10 years after, excluding single-family homes, duplexes and very small buildings. A Florida-registered engineer or architect prepares the report, and buildings four stories or taller need separate structural and electrical inspections. Since 2022, condominium and cooperative buildings of three or more stories within three miles of the coast face earlier deadlines. Each cycle produces repair scopes: concrete restoration, railings, waterproofing and electrical work.

How to hire a Miami contractor

1. Match the license to the job. A general, building or residential contractor for structural work; a licensed trade contractor for electrical, plumbing, mechanical or roofing.
2. Check the state license in DBPR's search and, for county-licensed trades, the county contractor search, including complaints.
3. Look at permit history. Miami-Dade's permit search covers the unincorporated county; cities such as Miami, Miami Beach and Coral Gables run their own building departments, so check there too.
4. Ask for NOA numbers for any windows, doors, shutters or roofing.
5. Confirm workers' compensation. Florida's law covers construction employers with even one employee (section 440.02), against four in most other industries. Ask for a certificate or the state exemption.
6. Get the scope, schedule and payment terms in writing, and pay against completed, inspected work.

Selling to Miami construction companies

Specialty contractors are the volume market: 4,477 firms that buy materials weekly and switch suppliers on service. The 408 nonresidential builders are fewer and buy through preconstruction and purchasing, often project by project. For the national picture, see the guide to construction companies; for a sales sequence that fits busy owners, see how to write a cold email.

Illustrative example. The seller, its sales and margins are invented; the counts are from Census data.

Biscayne Impact Supply (biscayneimpact.example) distributes impact windows and doors that hold Miami-Dade NOAs. Its core targets are the 732 foundation, structure and exterior contractors (which include glazing and roofing firms) and the 408 nonresidential builders: 1,140 accounts. Winning 3%, about 34, buying $40,000 a year each, is $1.36 million in sales, or $340,000 gross profit at a 25% margin. It prioritizes contractors pulling permits for recertification repairs and condo window replacements. Bebop finds contractors matching a description like that and drafts the first email.

Subject: NOA-approved stock for [company]'s [area] jobs

Hi [first name],

I saw [company] pulled permits for window replacements at [building or area] this month. On recertification jobs, the usual delay is waiting on approved product, not labor.

We stock impact windows and doors with current Miami-Dade NOAs and deliver county-wide within [days], with the NOA paperwork ready for your permit package.

Worth a 10-minute call on [day] to check sizes for your next job?

[Your name]

Local sources

Next step: see how the state's condo milestone inspections play out on Florida's Gulf Coast in the report on construction companies in Tampa.