Alabama contractor license classifications come from two separate state boards. The Licensing Board for General Contractors (LBGC) issues commercial and industrial licenses for projects of $100,000 or more, and the Home Builders Licensure Board (HBLB) issues residential licenses for jobs over $10,000. Each license carries two labels: a classification that describes the type of work you can do, and a bid limit letter that caps the dollar value of any single project you can take on. A contractor who works both commercial and residential jobs needs a license from each board.1Alabama Legislature. Alabama Code Title 34 Chapter 8 Article 1 Section 34-8-1 – Definitions
Which Board Licenses Your Work
The line between the two boards is drawn by project type and cost. The LBGC covers anyone who constructs, supervises, alters, maintains, repairs, or demolishes any building, highway, sewer, structure, or similar project when the total cost of labor and materials reaches $100,000. Swimming pool construction triggers the LBGC requirement at a lower $5,000, and subcontractors whose portion of a project meets the $100,000 threshold must hold their own LBGC license.2Alabama Licensing Board for General Contractors. Contractor Licensing Law
Residential work sits with the HBLB. Any construction, remodeling, repair, or improvement of a residence of three floors or fewer with no more than four units requires an HBLB license once the cost exceeds $10,000. Residential roofing triggers the requirement at $2,500.3Home Builders Licensure Board. Alabama Code 34-14A – Home Builders Licensure Law – Section 34-14A-2 Definitions Private homes and dwellings are exempt from the LBGC entirely, because that work belongs to the HBLB.
LBGC Major Division Classifications
The LBGC groups commercial and industrial work into five major divisions. To qualify for any of these, an applicant must show successful completion of multiple projects in that field. Applicants who cannot document that project history can still apply for narrower specialty classifications instead.
- Building Construction (BC) is the broadest classification. It covers structures for shelter, comfort, or convenience, along with foundations and incidental excavation. A BC license permits work on buildings of any height.
- Building Construction Under Four Stories (BCU4) covers the same scope as BC but caps the height at three stories.
- Highways and Streets (HS) covers roads, bridges, grading, drainage, guardrails, and parking areas.
- Heavy and Railroad (H/RR) covers tunnels, railroads, pipelines, marine construction, and hydroelectric development.
- Municipal and Utility (MU) covers water, sewer, gas, and electrical infrastructure, plus paving, curbs, and sidewalks.
Specialty Construction Classifications
Contractors who work in a single trade rather than an entire major division apply under the Specialty Construction (SC) designation. The SC classification covers dozens of trades, including environmental abatement and remediation, demolition, landscaping, fencing, sprinkler systems, cell tower construction, and mechanical work. Specialty contractors still have to meet the $100,000 project threshold to fall under LBGC licensing, and they are subject to the same bid limit tiers as major-division holders.
Bid Limit Letters
Every LBGC license also carries a letter that caps the dollar value of any single project the holder can accept. The statute sets six tiers:4Alabama Licensing Board for General Contractors. Alabama Code Section 34-8-2 – Licensure and Classification of Contractors
- A: up to $100,000
- B: up to $250,000
- C: up to $500,000
- D: up to $1,000,000
- E: up to $3,000,000
- U: unlimited
The board calculates your tier from your finances. Your maximum bid limit can be no more than ten times the lesser of your net worth or working capital, and both figures must come from a CPA-prepared financial statement. Even the lowest tier requires at least $10,000 in both net worth and working capital.5Alabama Licensing Board for General Contractors. Alabama Administrative Code 230-X-1-.02 – Requirements For Bid Limits
A contractor who wants a higher tier has a couple of options. The most common is a line of credit from a state or federally chartered bank with an Alabama office; the board adds that credit to your working capital. Another route is a personal financial statement from a major stockholder together with a notarized guarantee agreement, which qualifies the contractor for a one-step bid limit increase. Only audited, reviewed, or compiled statements prepared under U.S. GAAP by a CPA (or a board-approved licensed public accountant) are accepted, and the statement must be less than one year old.
Trades Licensed by Separate Boards
Some specialized trades sit outside the LBGC’s classification system entirely, or overlap with it. Electrical contractors are licensed by the Alabama Board of Electrical Contractors, and any electrical contractor performing a job over $50,000 must also hold an LBGC license.6Alabama Board of Electrical Contractors. Electrical Contractor Application Information and Instructions Heating, air conditioning, and refrigeration contractors are licensed by the Alabama Board of Heating, Air Conditioning, and Refrigeration Contractors. Plumbing contractors are licensed by a separate state plumbing board. If your work falls into one of these trades, check with both the trade board and the LBGC to confirm whether you need dual licensing at your project size.
Residential Classification and the Homeowner Exemption
HBLB licensure covers residential builders working on one- to four-unit dwellings of three stories or fewer. Alabama also carves out a homeowner exemption on the residential side: you can build or improve a one-family or two-family residence on your own property for your own use without a license, but only if the property is not offered for sale. You must supervise the work yourself. If the home is sold or listed within one year of substantial completion, the law presumes the construction was done for sale, which is a violation. Homeowners who use this exemption also give up access to the HBLB’s consumer protections, including the ability to file complaints or seek payment from the Homeowners’ Recovery Fund.7Home Builders Licensure Board. Exemptions
The LBGC has its own exemptions on the commercial side. Owner-builders working on their own property are exempt, as are authorized government representatives working under a licensed architect or engineer, regulated utilities handling emergency repairs or routine maintenance under similar supervision, and routine landscape maintenance like mowing and trimming. Any work an exempt party contracts out still has to go to a properly licensed contractor once the $100,000 threshold is met.8Alabama Legislature. Alabama Code Title 34 Chapter 8 Article 1 Section 34-8-7 – Exemptions From Chapter
Getting the Classification Wrong
Picking the wrong classification, or working without one, has real costs. Commercial contracting without an LBGC license is a Class B misdemeanor.9Alabama Licensing Board for General Contractors. Alabama Code Section 34-8-6 – Prohibited Acts, Penalties, Cease and Desist Orders Residential building without an HBLB license is a Class A misdemeanor, and the board can impose administrative fines of up to $5,000 per violation, issue cease-and-desist orders, and petition a circuit court for an injunction.10Home Builders Licensure Board. Alabama Code Section 34-14A-14 – Penalties, Injunctions
The most damaging consequence is contractual. A contractor who lacked the required license when the contract was signed cannot enforce that contract in court. Alabama courts have applied this bar even to alternative theories like unjust enrichment, and the residential statute states directly that a builder lacking the required license “shall not bring or maintain any action to enforce the provisions of any contract” entered into in violation of the licensing law. If your classification does not cover the work you actually performed, or your bid limit letter does not cover the project’s value, the client can refuse to pay and you have no legal remedy.