CheckLicensed Blog
Guides and research on verifying contractors before you hire.
Page 17 of 44
February 2026 · 6 min read
Montana requires HVAC contractors to hold a Specialty Contractor license through the DLI Building Codes Bureau. A $10,000 bond is required. Learn how to verify credentials at erd.dli.mt.gov before hiring.
Read more →February 2026 · 6 min read
South Dakota has no statewide roofing contractor license. Learn what local requirements apply, how to verify insurance and permits, and how to protect yourself when there's no state license to check.
Read more →February 2026 · 6 min read
South Dakota requires electricians to hold a license from the SD Electrical Commission (sdelectrical.org). Learn what the license tiers mean, how to verify credentials, and what to check before hiring.
Read more →February 2026 · 6 min read
South Dakota requires plumbers to hold a license from the State Plumbing Commission (dol.sd.gov). Learn what the license tiers mean, how to verify credentials online, and what to check before hiring.
Read more →February 2026 · 6 min read
South Dakota has no dedicated statewide HVAC contractor license. Learn what credentials matter, how to verify EPA certification and insurance, and how to protect yourself before hiring.
Read more →February 2026 · 6 min read
Maine requires roofing contractors to register as Home Improvement Contractors through the Maine DPFR (pfr.maine.gov). A $10,000 bond and written contract are required. Learn how to verify registration before hiring.
Read more →February 2026 · 6 min read
Maine licenses electricians through the Electricians' Examining Board under the DPFR (pfr.maine.gov). A $10,000 bond is required. Learn how to verify credentials, what license types exist, and what to check before hiring.
Read more →February 2026 · 6 min read
Maine licenses plumbers through the Plumbers' Examining Board under the DPFR (pfr.maine.gov). A $10,000 bond is required. Learn how to verify Master and Journeyman Plumber credentials before hiring.
Read more →February 2026 · 6 min read
Maine licenses HVAC and fuel contractors through the Maine Fuel Board under the DPFR (pfr.maine.gov). A $10,000 bond is required. Learn what the Oil Burner Technician and LP Gas Technician licenses mean before hiring.
Read more →February 2026 · 6 min read
New Hampshire requires roofing contractors to register as Home Improvement Contractors through the OPLC (oplc.nh.gov). A $25,000 bond — one of the highest in the region — is required. Learn how to verify registration.
Read more →February 2026 · 6 min read
New Hampshire licenses electricians through the NH Electricians' Board under the OPLC (oplc.nh.gov). A $25,000 bond applies for residential work. Learn how to verify credentials and what to check before hiring.
Read more →February 2026 · 6 min read
New Hampshire licenses plumbers through the NH Plumbers' Board under the OPLC (oplc.nh.gov). A $25,000 bond applies for residential work. Learn how to verify credentials and what to check before hiring.
Read more →February 2026 · 6 min read
New Hampshire licenses HVAC contractors through the NH Mechanical Licensing Board under the OPLC (oplc.nh.gov). A $25,000 bond applies for residential work. Learn how to verify credentials before hiring.
Read more →February 2026 · 6 min read
Delaware requires all roofing contractors to be licensed through the Division of Professional Regulation (dpr.delaware.gov). A $10,000 bond is required. All trades are licensed in Delaware. Learn how to verify before hiring.
Read more →February 2026 · 6 min read
Delaware requires electricians to be licensed through the Division of Professional Regulation (dpr.delaware.gov). A $10,000 bond is required. All trades are licensed. Learn how to verify credentials before hiring.
Read more →February 2026 · 6 min read
Delaware requires plumbing contractors to be licensed through the Division of Professional Regulation (dpr.delaware.gov). A $10,000 bond is required. All trades are licensed. Learn how to verify credentials before hiring.
Read more →February 2026 · 6 min read
Delaware requires all HVAC contractors to be licensed through the Division of Professional Regulation (dpr.delaware.gov). A $10,000 bond is required. All trades are licensed. Learn how to verify credentials before hiring.
Read more →February 2026 · 6 min read
North Dakota has no statewide roofing contractor license. Learn what local requirements apply, how to verify insurance and permits, and how to protect yourself when there's no state license to check.
Read more →February 2026 · 6 min read
North Dakota requires electricians to hold a license from the ND State Electrical Board (nd.gov/electrical). A $10,000 bond is required. Learn how to verify credentials, what license types exist, and what to check before hiring.
Read more →February 2026 · 6 min read
North Dakota requires plumbers to hold a license from the ND State Plumbing Board. A $10,000 bond is required. Learn how to verify credentials, what the license tiers mean, and what to check before hiring.
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