CT General Contractor cheat sheet

Connecticut requires registration of home improvement contractors with the Department of Consumer Protection (DCP); a Certificate of Registration must be carried and shown on request.

Home improvement work performed for compensation on residential property generally requires registration when the total contract price exceeds the statutory threshold; verify the current dollar figure in CGS Chapter 400 before bidding.

Registration is not the same as a trade license: electrical, plumbing, heating/cooling, and sheet metal work require separate occupational licenses from the appropriate examining board.

A registered contractor must include the registration number in advertisements and on written contracts; failure to display it is a violation enforceable by DCP.

DCP may impose civil penalties, restitution, and registration suspension or revocation for violations; repeat violations escalate penalties.

Contractors must maintain a certificate of insurance and, where required, a surety bond or irrevocable letter of credit as a condition of registration.

New home construction and major alterations may trigger new home warranty obligations under CGS; the warranty period and coverage terms should be confirmed in the statute.

Keep registration current: expiration, change of business name, or change of address must be reported to DCP within the statutory timeframe.

Unregistered contracting is a deceptive trade practice exposure; contracts signed by unregistered contractors may be unenforceable by the contractor.

A written home improvement contract is required above the statutory threshold and must be signed by both parties before work begins.

Required contract content typically includes: contractor name, address, and registration number; date; scope of work; materials; total price; payment schedule; and notice of the homeowner's three-business-day right to cancel.

The three-business-day cancellation right applies to contracts solicited at the residence; the notice must be conspicuous and the homeowner must receive a duplicate copy.

Deposits are limited by statute; a contractor may not demand a deposit exceeding the statutory percentage of the contract price before work starts.

All changes to scope, price, or schedule should be documented in a signed written change order; oral modifications create evidentiary risk.

CUTPA (Connecticut Unfair Trade Practices Act) prohibits unfair or deceptive acts in trade or commerce; violations can support attorney's fees and punitive damages.

Common deceptive practice triggers: misrepresenting licensing status, bait-and-switch pricing, unauthorized work, abandonment, and failing to disclose lien rights.

Homeowners may file complaints with DCP; DCP can order arbitration or mediation and may require a contractor to post a surety bond to satisfy a judgment.

Lien waivers and releases should be obtained from subcontractors and suppliers to protect the owner from mechanic's lien claims.

Common entity forms: sole proprietorship, general partnership, LLC, S corporation, and C corporation; LLC is the most common for small contractors because of limited liability and pass-through taxation.

An LLC does not shield against personal liability for one's own negligence or for personally guaranteed debts; contractors should carry insurance regardless of entity type.

General liability insurance covers third-party bodily injury and property damage; it typically excludes the contractor's own workmanship (your-work exclusion).

Workers' compensation is required in Connecticut for employers with one or more employees; sole proprietors and some corporate officers may elect coverage.

Commercial auto and inland marine/installation floaters cover tools and materials in transit and on site.

A surety bond guarantees performance; bonding capacity depends on working capital, net worth, and financial statements reviewed by the surety.

Keep separate business bank accounts and records; commingling funds undermines limited liability protection.

Contractors should verify subcontractor certificates of insurance and require additional insured status where appropriate.

The Connecticut State Building Code is based on the International Code family (IBC, IRC, IECC) with Connecticut amendments; local amendments are limited.

Building permits are required before construction, alteration, or demolition; the local building official issues permits and performs inspections.

The building official has authority to interpret the code, issue stop-work orders, and require correction of unsafe conditions.

Required inspections typically include footing/foundation, framing, rough-in (MEP), insulation, and final; work must not be covered before inspection approval.

A certificate of occupancy is required before a building may be occupied; a temporary certificate may be issued for limited purposes.

The Connecticut Historical Commission and local historic district rules may add review requirements for work in historic districts.

Accessibility requirements follow the Connecticut Accessibility Code and ICC/ANSI A117.1; verify path-of-travel and restroom compliance early.

Energy code compliance (IECC as amended) requires envelope, lighting, and mechanical efficiency documentation at permit and inspection.

Fall protection is required at 6 feet in construction; guardrails, safety nets, or personal fall arrest systems are acceptable.

Scaffold requirements: stable footing, plumb and square, fully planked platforms, guardrails at 10 feet and above, and competent-person erection.

Excavations 5 feet or deeper require protective systems (sloping, shoring, or shielding); a competent person must inspect daily and after rain.

Ladders: maintain 3-foot extension above landing for extension ladders, 4:1 setup angle, and secure against displacement.

Hazard communication (HazCom) requires safety data sheets, labeling, and employee training for chemical exposures.

Personal protective equipment: hard hats, safety glasses, hearing protection, and respiratory protection as required by task and exposure.

Electrical safety: GFCI protection on construction sites, lockout/tagout for energized work, and maintaining 10-foot clearance from power lines.

Recordkeeping: OSHA 300 log required for employers with more than 10 employees; report fatalities within 8 hours and severe injuries within 24 hours.

Concrete strength is specified by compressive strength (psi) at 28 days; slump and air content are field-tested per ACI standards.

Wood framing: dimensional lumber grading (e.g., SPF #2) determines allowable spans; engineered lumber (LVL, I-joists) requires manufacturer span tables.

Masonry: mortar type (N, S, M) and wall ties, flashing, and weep holes control water penetration and differential movement.

Steel: AISC shapes and bolt/weld specifications; fireproofing is required for structural steel per building type.

Envelope strategy: control layers for water, air, vapor, and thermal; continuity at transitions (windows, penetrations, roof-wall) is critical.

Roofing: underlayment, ice barrier at eaves in cold climates, flashing at valleys and penetrations, and proper attic ventilation.

Windows and doors: flashing with sill pans, head flashing, and back-dam sealing; air-sealing at rough openings.

Moisture control: vapor retarder placement depends on climate; in Connecticut, interior vapor retarders are typical in mixed-humid assemblies.

Load paths: gravity loads transfer from roof to walls to foundation; lateral loads (wind, seismic) require shear walls, diaphragms, or bracing.

Footings: size based on soil bearing capacity; minimum depth below frost line (typically 42 inches in Connecticut).

Foundation walls: reinforced concrete or masonry; drainage board, footing drains, and waterproofing are required below grade.

Framing: header sizing by span and load; jack and trimmer studs at openings; king studs carry header loads.

Shear walls: required at braced wall lines; hold-downs and anchor bolts transfer uplift and shear to foundation.

Beam and joist design: deflection limits (L/360 for floors, L/240 for roofs) and bearing requirements at supports.

Connectors: hurricane ties, joist hangers, and post bases must be rated for the loads and installed per manufacturer specifications.

Inspection points: footing, foundation wall, framing, and shear wall nailing must be inspected before covering.

MEP coordination: establish a combined services drawing or BIM model to identify clashes before rough-in.

Plumbing: slope drain lines at 1/4 inch per foot for 2-inch and smaller; venting per code; cleanouts at required intervals.

Water supply: size by fixture units; pressure-reducing valves where supply exceeds code limits; backflow prevention required.

HVAC: load calculations (Manual J) determine equipment size; duct sizing by Manual D; combustion air and venting per code.

Electrical: panel schedules, dedicated circuits for major appliances, GFCI/AFCI protection, and grounding/bonding requirements.

Rough-in inspections: plumbing, electrical, and mechanical rough-ins must be inspected before insulation and drywall.

Coordination sequence: underground plumbing, then framing, then MEP rough-in, then insulation, then inspections, then drywall.

Firestopping and penetration sealing at rated assemblies must be coordinated with MEP trades.

Estimating: quantity takeoff by CSI division; apply labor, material, equipment, and subcontractor costs plus overhead and profit.

Contingency: typically 5-10% for design-bid-build and 10-15% for early-stage or renovation work.

Critical path method (CPM): identify the longest path; float is the amount of time an activity can slip without delaying the project.

Schedule types: Gantt for communication, CPM for logic, and look-ahead schedules for short-interval planning.

Change management: written change orders with cost and time impact; track via change log and update schedule.

Submittals and RFIs: maintain logs; submittal review time must be built into the schedule.

Quality control: inspection and test plans, punch lists, and closeout documentation (as-builts, warranties, O&M manuals).

Cash flow: progress billing, retainage (commonly 5-10%), and lien waivers tied to payment.