About this business

General Contractor

Property owners in MIAMI (33177) and surrounding Florida areas hire THERMAL LINE INC for permitted General Contractor projects. The company also does business as FERNANDEZ, SERGIO J.

THERMAL LINE INC coordinates multi-trade remodels, additions, and structural updates from permit through final inspection in MIAMI. General contracting covers scheduling subs, site safety, change orders, and punch-list closeout. State classification on file: CMC.

Florida DBPR licenses cover construction and several specialty trades statewide.

FL active license CMC1250054 with records dating to 2010 (16 years on file). Current expiration: 2026-08-31. Source agency: Florida DBPR.

Mailing address: 18271 SW 142ND PLACE, MIAMI, FL 33177. Compare insurance certificates and references alongside license verification.

Market insights

More established than typical General Contractor pros in FL.

Compared with other General Contractor contractors in MIAMI, this license has above-average tenure.

How this pro compares

License tenure vs state average

THERMAL LINE INC

16.2 yrs

FL General Contractor average

8.8 yrs

THERMAL LINE INC's license is 7.4 years above average for General Contractor contractors in FL.

License journey

License issuedMarch 30, 2010
16 yrs of operating history on record
License verifiedMay 29, 2026
License checked 22 days ago
License expirationAugust 31, 2026
Renews within the next year

License details

License #CMC1250054

StatusActive

IssuedMarch 30, 2010

ExpiresAugust 31, 2026

BondNot published by the state

County—

StateFL

Last verifiedMay 29, 2026

License verified with Florida DBPR · last checked May 29, 2026. Confirm status with the state board before hiring.

Before you hire checklist

Work through these steps before signing — checking items helps you compare contractors with confidence.

1Verify license statusConfirm CMC1250054 with Florida DBPR before signing a contract.
2Review bond & insuranceFlorida does not publish bond dollar amounts in public licensing records. Always request written proof of bond and insurance.
3Match scope to license classEnsure the license covers General Contractor work for your project type in FL.
4Compare written quotesCompare at least three written estimates from licensed General Contractor contractors in MIAMI.
5Use a written contractInclude timeline, payment schedule, permit responsibility, and warranty terms before work begins.

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