ralph@quincompany.com
(864) 201-3021
Get a Free Quote

Breathe Better in Your Upstate, SC Home

Reduce radon levels and protect your family’s health.

Quick Answers, Friendly Support

Straight Answers, Safer Air

Quin Company keeps families safe from radon across the Upstate. Founded by Ralph Quin in 1991, we focus on accurate testing, compliant mitigation, and honest guidance. We’re a small team that shows up on time, explains your options, and gets results. You’ll get lasting real solutions—not guesswork. Every step meets State and EPA standards.

What We Do?

Radon Services

Certified radon testing, mitigation, and inspections delivering accurate results, compliant systems, and safer indoor air.

View More

Inspections

Provide professional home inspection services to help homeowners, buyers, sellers, and real estate professionals make informed decisions.

View More

Construction

We provide residential construction and renovation services across the upstate to help homeowners with their construction needs.

View More
Provide professional home inspection services to help homeowners, buyers, sellers, and real estate professionals make informed decisions.
White radon mitigation system with pipes attached to a brick wall, next to electrical components and green plants.

Why Homeowners Choose
Quin Company?

Since 1991, Ralph Quin’s team has combined precise measurement, practical design, and clean installation—giving Upstate homeowners clear answers, durable systems, and dependable service.

Certified Radon Professionals

NRPP-certified technicians follow EPA, ASTM, and state standards on every job, without shortcuts.

Reliable

You can count on consistent, quality workmanship on every job whether radon or construction.

Affordable

We offer fair, honest pricing with no surprises.

Experienced

Our licensed and skilled team has the skills to handle a wide range of home repairs and improvements.

Respectful

We treat your home with care and always clean up when the job is done.

Testimonials

Customers, Realtors, Builders.

A contractor advised that they were not able to put in a window bar countertop in my kitchen without an architect and drawings. I knew that was not the case. Quin company came in and in a few short weeks, Ralph made my vision come to life with limited direction and under budget. Highly recommend for any home improvement. Honesty & Integrity still alive in the Upstate!
Lisa B.

The home inspection of my future home revealed a high level of radon present. I contacted Ralph Quin, a certified mitigation contractor who had performed the same service for my neighbors. Mr. Quin provided a free estimate of the work, performed the work without delay and will be following up with yearly testing. My realtor was so impressed with his service and work that she will be referring her future clients to him.
Mary Beth S.

My realtor recommended Ralph Quin after I bought my house and found out that the radon mitigation the previous owner had installed wasn't actually doing the job. Ralph quickly identified the real source of the problem — something the original installer had missed entirely — and designed a custom solution that properly addressed it.
He was incredibly knowledgeable, patient in explaining exactly what he was doing and why, and a genuine pleasure to work with. As a bonus, the basement looks noticeably better than it did before. I'd recommend the Quin Company without hesitation to anyone dealing with a radon issue.
Max P.

Know Your Radon Level Before You Buy

Get fast testing and a clear, written plan for mitigation.

Contact Us
Quin Company | Upstate, SC