1.3 License Categories: Unrestricted, Restricted, and Specialty CSL

Three Categories, One Licensing Framework

Not every CSL is the same. BBRS issues three distinct categories, each scoped to a different range of construction work. Which one you pursue depends entirely on the kind of work you intend to supervise — not on some abstract level of prestige. Picking the right category before you study matters because your reference-book familiarity, and the code sections you drill, should match the work you'll actually be licensed for.

Unrestricted CSL: The Broadest Category

The Unrestricted CSL is the category most people mean when they informally say "general contractor license." It authorizes the holder to act as construction supervisor of record on:

• Buildings under 35,000 cubic feet in volume
• One- and two-family dwellings
• Agricultural structures
• Walls under 10 feet in height

Because it spans multiple building types up to a defined size threshold, the Unrestricted exam is the longest of the published formats: 75 questions, 4-hour (240-minute) time limit, 70% to pass.

One- and Two-Family Dwellings CSL: Residential-Only

This category narrows supervision authority to residential construction only — one- and two-family dwellings. It exists for supervisors whose entire practice is home construction and renovation and who have no need for the broader Unrestricted scope covering agricultural buildings or larger non-dwelling structures. Its continuing-education requirement is lighter than Unrestricted's (10 hours vs. 12 hours per renewal cycle, detailed in Section 1.4), reflecting its narrower scope of authorized work.

Exam Note: The One- and Two-Family Dwellings category is officially the Restricted CSL, and its exam is a verified published format: 60 questions, 4-hour (240-minute) time limit, 70% to pass. Don't confuse it with the Unrestricted exam (75 questions) or with the trade-specific Specialty exams (which vary in length by trade).

Specialty CSL: One Trade, One License

The Specialty CSL is not a single license — it is a family of separate, narrow licenses, each limited to one trade:

• Masonry
• Roof Covering
• Window and Siding
• Demolition
• Insulation
• Solid fuel burning (appliances such as wood stoves and pellet stoves)

Each specialty is its own restricted license: a mason holding a Masonry Restricted CSL is not automatically authorized to supervise roofing work, and vice versa. A supervisor who wants to legally oversee multiple specialties must hold a separate Specialty license for each one — and pay a separate $100 license fee per specialty added to the $150 base application fee.

Specialty exams vary in length by trade — from 30 questions (Demolition, 120 minutes) to 50 questions (Masonry, 180 minutes), with most Specialty exams at 35 questions in 120 minutes — and each requires a 70% passing score. Don't read the shorter question counts as "easier" — the questions are narrowly concentrated on the chosen trade, so the density of trade-specific code knowledge tested per question is higher than on the broader Unrestricted exam.

Choosing a Category

There is no single "correct" category — the decision is entirely about the scope of work you intend to supervise:

• If you plan to run a broad residential/light-commercial supervision practice covering multiple building types up to 35,000 cubic feet → Unrestricted.
• If your work is entirely home construction and renovation → One- and Two-Family Dwellings.
• If you are, and intend to remain, a specialist in one trade (for example, a roofing contractor who only ever supervises roofing crews) → Specialty in that one trade.

Many supervisors eventually hold more than one CSL category or specialty over the course of a career as their business grows, but each one requires its own exam pass and its own renewal/CE track.

A Worked Example: Matching Scope to Category

Suppose a candidate currently frames additions and remodels on single-family homes, but their business also occasionally pours a foundation, repairs a chimney, or reroofs a structure as part of a larger renovation job. Because that scope crosses building-type lines — foundation work, roofing, and general framing on a dwelling — the One- and Two-Family Dwellings CSL would be too narrow for the roofing and masonry-adjacent portions of the job, and a single Specialty license would leave the framing and foundation work uncovered entirely. The Unrestricted CSL is the category built for exactly this kind of mixed-scope residential practice, since it covers 1- and 2-family dwellings without forcing the supervisor to hold a separate specialty license for every trade touched along the way.

Compare that to a candidate who runs a business that does nothing but reroof houses. Pursuing the Unrestricted CSL for that business would mean studying and testing on sitework, foundations, structural framing, and mechanical systems that the business will never actually need to navigate on a job site. The Roof Covering Specialty CSL matches that narrower scope directly — a shorter exam (35 questions instead of 75) concentrated on the code sections that actually govern the work being supervised, and a lighter CE load at renewal (6 hours instead of 12).

The general rule: the broader the range of building types and systems a supervisor's business actually touches, the more likely Unrestricted is the right category; the narrower and more trade-specific the work, the more a Specialty license fits. Choosing based on convenience rather than actual project scope is a common mistake — a Specialty license does not expand to cover work outside its named trade no matter how experienced the holder becomes in adjacent trades.