John G Koster

Roofing in Carlinville, IL.

John G Koster appears in Illinois license records as a roofing contractor based in Carlinville, IL. The record lists a QUALIFYING PARTY ROOFING CONTRACTOR license (#105002304) with status “Active”.

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About this contractor

License type
QUALIFYING PARTY ROOFING CONTRACTOR
License #
105002304
License status
Active
Service area
Carlinville, IL 62626

Information sourced from public state license records — not yet verified by the business owner. Always confirm credentials before hiring.

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Check license #105002304 on the Illinois IDFPR lookup and the BBB the day you hire; status can change after Bidroom's last import (2026-04-11).

Frequently asked about John G Koster

What does John G Koster do?

John G Koster is a roofing contractor based in Carlinville, Illinois.

Is John G Koster licensed?

Yes. John G Koster holds Illinois IDFPR license #105002304 (status: Active). Verify the current status on Illinois IDFPR before hiring.

Where is John G Koster located?

John G Koster is based in Carlinville, IL 62626.

How do I contact John G Koster?

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How do I get a quote from John G Koster?

The fastest way is to post your project on Bidroom — John G Koster and up to 2 other verified roofing contractors in Carlinville can bid on it, and every quote includes itemized pricing + a written scope of work.

Is John G Koster verified on Bidroom?

Not yet. This listing was created from public Illinois license records but hasn't been claimed by the owner. The license info above is from official records, but the business hasn't confirmed its services, hours, or current availability with us yet.

This record in Carlinville

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