State Contractor Licensing Guides
Every state licenses construction work differently. Some run one statewide contractor board, some license only specific trades, and some push the whole question down to the city or county issuing the permit. These guides break down each state's actual model - who regulates what, which credential a scope of work needs, how to verify a licence, and the permit signals that follow.
A
4 guidesAlabama
Alabama contractor license guide covering general contractors, home builders, roofing, electrical, HVAC, plumbing, specialty trades, permit signals and official sources.
View guide →AKAlaska
Alaska contractor licensing guide covering CBPL contractor registrations, residential endorsement, specialty contractor classifications, electrical and mechanical administrators, DOLWD Certificates of Fitness, municipal overlays and permit-to-lead routing.
View guide →AZArizona
Arizona contractor license guide covering ROC classifications, B-1, B-2, B, KB-1, KB-2, CR trade codes, application rules, permit signals and official verification.
View guide →ARArkansas
Arkansas contractor licensing guide covering ACLB commercial and residential credentials, electrical designations, HVACR Class A-E, plumbing and gas licenses, specialty classifications, verification and permit signals.
View guide →C
3 guidesCalifornia
California contractor license guide covering A, B, B-2 and specialty trades, CSLB requirements, application steps, permit signals and official sources.
View guide →COColorado
Colorado contractor licensing guide covering DORA electrical RW/JW/ME/EC and plumbing RP/JP/MP/PC credentials, local general contractor, HVAC and roofing licensing, Denver and Pikes Peak routing, DORA verification, and permit opportunity signals.
View guide →CTConnecticut
Connecticut contractor licensing guide covering DCP HIC/NHC registrations, E-1/P-1/S-1 trade classifications, embedded license prefixes, DPH asbestos/lead credentials and public-work routing.
View guide →D
2 guidesDelaware
Delaware contractor registration and trade licensing guide covering Department of Labor contractor registration, Division of Revenue business licensing, DPR electrical and plumbing/HVACR licenses, DNREC water-well and asbestos programs, DPH lead certification, and local permit overlays.
View guide →DCDistrict of Columbia
District of Columbia contractor licensing guide for general contractors, construction managers, home improvement contractors, electrical, plumbing/gasfitting, refrigeration/HVAC, elevator, asbestos, DOB permits, and lead/asbestos environmental gates. Built for contractor verification and permit-to-lead routing.
View guide →I
4 guidesIdaho
Idaho contractor registration and trade licensing guide covering the $2,000 contractor-registration threshold, electrical, HVAC, plumbing, public works, manufactured housing, permits and project signals.
View guide →ILIllinois
Illinois contractor licensing guide covering IDPH plumbing and irrigation, IDFPR roofing and alarm, OSFM fire sprinkler/elevator/boiler/tank credentials, Chicago/local contractor licensing and permit signals.
View guide →INIndiana
Indiana contractor licensing guide covering statewide plumbing, radon, water-well, asbestos and lead credentials plus local GC, electrical, HVAC and roofing routing and permit signals.
View guide →IAIowa
Iowa contractor registration and trade licensing guide covering DIAL contractor registration, IEEB electrical licenses, PMSB plumbing/mechanical/HVAC credentials, asbestos, lead, elevator and fire-alarm routing.
View guide →K
2 guidesKansas
Kansas contractor licensing guide for roofing registration, KDHE environmental credentials, manufactured housing and local Class A/B/C contractor and trade licensing. Built for permit-driven lead routing and contractor verification.
View guide →KYKentucky
Kentucky contractor licensing guide covering state electrical, plumbing and HVAC credentials, fire protection, boiler, manufactured housing, asbestos, lead, and local general-contractor licensing for permit-routing intelligence.
View guide →M
8 guidesMaine
Maine contractor licensing guide covering OPOR electrician, plumber and fuel-board credentials, DEP asbestos/lead, manufactured housing and municipal-only GC, roofing and general HVAC routing.
View guide →MDMaryland
Maryland contractor licensing guide covering MHIC 01/05, Home Builder Registration, Master/Journeyperson Electrician, Master/Journey Plumber, natural gas fitting and HVACR credentials.
View guide →MAMassachusetts
Massachusetts contractor licensing guide covering CSL, HIC, electrical, plumbing and gas, sheet metal, refrigeration, hoisting, elevator, pipe and sprinkler fitting, asbestos and deleading credentials, plus permit-routing signals for TigerLeads.AI.
View guide →MIMichigan
Michigan contractor licensing guide covering Residential Builder and Maintenance & Alteration licenses, electrical, mechanical, plumbing, elevator, asbestos, lead and permit-driven trade opportunities.
View guide →MNMinnesota
Minnesota contractor licensing guide covering DLI residential contractor prefixes BC, CR and RR, electrical and plumbing credentials, the MB mechanical contractor bond, Q qualifying-person registrations, MDH asbestos/lead credentials, local commercial GC/HVAC routing, and permit opportunity signals.
View guide →MSMississippi
Mississippi contractor licensing guide covering MSBOC Certificate of Responsibility, commercial and residential classifications, electrical, mechanical, plumbing, roofing, fire sprinkler and solar routing.
View guide →MOMissouri
Missouri contractor licensing guide covering statewide electrical licensing through OSEC, DNR asbestos and wells, DHSS lead, Fire Safety elevator/boiler/blasting credentials, local GC/plumbing/HVAC/roofing rules, and permit opportunity signals.
View guide →MTMontana
Montana contractor licensing guide for construction contractor licensing/registration, electrical, plumbing, medical gas, fire protection, elevator, boiler, asbestos and permit-based mechanical routing. Built for contractors, trades and suppliers using permit intelligence.
View guide →N
8 guidesNebraska
Nebraska contractor registration and trade licensing guide covering DOL Contractor Registration, electrical licenses, State Fire Marshal credentials, water well, onsite wastewater, asbestos, lead and local plumbing/HVAC routing.
View guide →NVNevada
Nevada contractor license guide covering NSCB A, B, AB and C classifications, specialty trades, monetary limits, bonds, application rules and permit signals.
View guide →NHNew Hampshire
New Hampshire contractor licensing guide covering OPLC electrical and mechanical credentials, NHDES septic and water-well licensing, manufactured housing, local GC routing, permit signals and official verification sources.
View guide →NJNew Jersey
New Jersey contractor licensing guide covering HICB, HECB, EC/EBP, LMP, HVACR, fire protection, public works registration, elevator, asbestos, lead, wells and radon routing.
View guide →NMNew Mexico
New Mexico contractor licensing guide covering CID classification codes including GB-98, GB-2, GA-98, GF-98, EE-98, ER-1, EL-1, MM-1, MM-98, MS-12 and specialty classes for permit-driven lead routing.
View guide →NYNew York
New York contractor licensing guide covering local home-improvement licensing, NYC contractor registrations, electrical and plumbing licenses, mold and asbestos licensing, public-work registration, building codes and permit opportunity signals.
View guide →NCNorth Carolina
North Carolina contractor license guide covering NCLBGC classifications, $40,000 threshold, electrical, plumbing, HVAC, roofing, concrete, framing and specialty trades.
View guide →NDNorth Dakota
North Dakota contractor licensing guide covering Secretary of State Class A-D contractors, NDSEB electrical credentials, Plumbing Board licenses, DEQ asbestos, DWR well/geothermal, fire-protection review and design-professional gates.
View guide →O
3 guidesOhio
Ohio contractor license guide covering OCILB commercial electrical, HVAC, hydronics, plumbing and refrigeration licenses, local residential contractor routing, fire protection, elevators, asbestos, lead and permit signals.
View guide →OKOklahoma
Oklahoma contractor licensing guide covering CIB electrical, plumbing, mechanical/HVAC-R, roofing registration, inspectors, asbestos licensing, local general-contractor registration and permit-routing signals.
View guide →OROregon
Oregon contractor licensing guide covering CCB residential and commercial endorsements, electrical, plumbing, HVAC, roofing, lead, asbestos, public works bonds, adopted codes and permit opportunity signals.
View guide →S
2 guidesSouth Carolina
South Carolina contractor license guide covering commercial general and mechanical licensing, residential builders, electrical, HVAC, plumbing, roofing and specialty trades.
View guide →SDSouth Dakota
South Dakota contractor licensing guide covering the DOR contractor's excise tax license, Electrical Commission, Plumbing Commission, SDDOT, DANR, Technical Professions and local permit overlays.
View guide →T
2 guidesTennessee
Tennessee contractor license guide covering BC classifications, electrical, mechanical, plumbing, roofing, masonry, specialty trades, home improvement rules and permit signals.
View guide →TXTexas
Texas contractor licensing and trade guide covering local general-contractor rules, electrical, HVAC, plumbing, roofing, specialty trades, permit signals and official sources.
View guide →V
2 guidesVermont
Vermont contractor registration and trade licensing guide covering OPR residential contractor registration, electrical, plumbing, gas, fire-sprinkler, elevator, asbestos, lead, well, wastewater and design-professional credentials.
View guide →VAVirginia
Virginia contractor license guide covering Class A, B and C thresholds, CBC/RBC, electrical, HVAC, plumbing, roofing, specialty trades, application rules, building codes and permit signals.
View guide →W
4 guidesWashington
Washington contractor licensing and registration guide covering L&I general and specialty contractor registration, electrical, plumbing, elevator, asbestos, lead-safe renovation, manufactured-home installation and permit opportunity signals.
View guide →WVWest Virginia
West Virginia contractor licensing guide covering WVCLB classifications, State Fire Marshal electrical and fire credentials, Division of Labor plumbing/HVAC/elevator credentials, environmental programs and design-professional routing.
View guide →WIWisconsin
Wisconsin contractor licensing guide covering DSPS Dwelling Contractor and Dwelling Contractor Qualifier, electrical, HVAC, plumbing, fire sprinkler, elevator, inspection, POWTS, DHS lead/asbestos, DNR well and DATCP pesticide credential lanes, plus permit opportunity signals.
View guide →WYWyoming
Wyoming contractor licensing guide covering statewide electrical licensing, local GC/plumbing/mechanical contractor gates, State Fire Marshal plan review, resident-contractor certification, water wells, environmental programs and design-professional credentials.
View guide →Before you rely on any of this: licensing rules, fee schedules and board names change. Every guide links the official state agency or board record - verify the live source, and check the local permit jurisdiction, before bidding or pulling a permit.
Know the rules. Then get the jobs.
Licensing tells you what you are allowed to build. TigerLeads tells you where the work is - permit-based construction opportunities across 39+ states, updated daily, with the contact and scope detail you need to bid first.
