Radon mitigation quotes in Algonquin
Algonquin grew from a Fox River crossing into a Randall Road corridor boomtown, and its housing tells that story in two chapters: the older river-valley streets near downtown, and the broad 1990s–2000s subdivisions and townhome communities that climbed the hill west of the river. Radon shows up in both chapters — and in townhomes it arrives with an extra question about shared walls and associations that this page takes seriously.
Algonquin homeowners hire independent, IEMA-licensed radon mitigation contractors. The introduction costs nothing and obligates nothing; contracts are directly between you and the contractor.
Algonquin and McHenry County
Algonquin straddles the McHenry–Kane county line, with the village core in McHenry County and southern sections reaching into Kane. We route all of ZIP 60102 through our McHenry territory; Illinois’ statewide IEMA-OHS licensing makes the line irrelevant to which contractors can quote you.
If the result surfaced in a transaction
Corridor subdivisions turn over on the family-move cycle, and radon testing is standard inspection fare. Illinois treats results as disclosure items — shared, then negotiated. Townhome transactions add one wrinkle: mitigation on an attached unit is still normally a per-unit system, but exterior routing may touch association rules, so surfacing HOA requirements during the negotiation (not after) keeps closings smooth.
Those duties are set in Illinois, not in McHenry County — Illinois radon disclosure rules has the statute and the agency behind it, and the Illinois home-sale playbook covers the part no statute decides: who pays.
The housing you’re mitigating
West-side Algonquin is late-vintage suburban construction: poured foundations, full basements, attached garages — the tidy single-point install profile. Townhome and duplex communities cluster along the corridor; end units and interior units alike sit on their own slabs and are mitigated individually, with routing planned around association aesthetics. The older river-district homes bring the usual pre-war variables: block foundations, additions, and designs that reward experience.
If that describes your house, the next question is usually what the work costs and whether you need it at all. Our guide to what mitigation costs across Suburban Chicagoland sets out the local price drivers, and how mitigation is actually done in Suburban Chicagoland covers the system types that suit these foundations. If you have not yet confirmed the reading, start with the difference between testing and mitigation — they are separate jobs, often done by separately credentialed people.
Two general guides sit behind those local pages: how much radon mitigation costs — commonly quoted ranges by home type and the six factors that move a quote — and how a mitigation system works, which explains the suction point, pipe, fan and manometer a Algonquin quote should itemise.
Neighbouring towns share McHenry’s geology and its housing eras more than they share a postcode, so a result two streets over in the next municipality is often more informative than one across the city. Radon across McHenry County covers what the county line does and does not change — and it changes less than people expect, because Illinois licenses radon work statewide rather than county by county.
Who is licensed to do this work near Algonquin
Illinois does not leave this to guesswork, and neither should you. IEMA-OHS licenses radon mitigation professionals for the whole state and publishes the active list itself — no account, no fee, no intermediary. It is the same list a search engine returns above the review sites, and it is the only list of McHenry County mitigation supply that nobody paid to appear on.
- Search IEMA’s active licensee register — filter by licence type: mitigation and by service county or city to see who covers Algonquin.
- IEMA’s printable mitigation licensee list for McHenry County — the whole county on one page, useful if you want to work down it methodically.
Source: IEMA-OHS Radon Tracking System. Register locations last confirmed 2026-08-18. The register is live and the state’s; anything reprinted from it on this site carries the date it was last checked, and the register wins wherever the two disagree.
What a listing does and does not tell you
- It shows who currently holds an Illinois mitigation licence — not who is good, insured, available, or priced fairly.
- A licence covers a person or business, not a specific job. Confirm the licence you were quoted by is the one doing your work.
- Measurement and mitigation are separate Illinois licences. The list linked here is the mitigation list.
- Nobody on it has any relationship with Radon Connect. We do not place, rank, endorse, or receive anything from the businesses Illinois licenses.
So the register narrows the field; it does not pick for you. Ask every business you shortlist for its licence number and check it yourself — that habit is your protection, and how Illinois radon licensing works, and how to verify a number walks through it. When the quotes arrive, compare them on the eight lines that actually differ rather than the total at the bottom.
Prefer not to work the list yourself? Tell us the reading and the postcode and we will check coverage before asking for a single contact detail — start a request, and the confirmation tells you exactly what happened to it, including when the answer is that nobody covers you yet.
Deciding well in Algonquin
- Townhome owners: confirm association exterior standards early and tell bidders, so routing is quoted correctly the first time.
- End unit or interior unit, the slab under you is yours — test it rather than inferring from a neighbor’s result.
- Older river-district homes deserve bidders who can talk specifically about pre-war foundations.
A reading in the next town is often more informative than one across Algonquin, because McHenry’s housing eras and soil do not stop at a municipal line — radon in Crystal Lake, radon in Huntley and radon in Elgin cover the neighbouring picture, and what a system costs across Suburban Chicagoland sets out the price drivers before you start collecting numbers.
Nearby coverage
Contractors quoting Algonquin typically also serve these McHenry-area communities:
- Lake in the Hills
- Crystal Lake
- Huntley
- Carpentersville
- Cary
- Elgin
- All of McHenry County →
Go deeper on Suburban Chicagoland
Algonquin questions, answered straight
Our townhome tested at 4.8. Does the association fix this or do we?
Read your declarations, but in most Illinois townhome associations the interior environment — and usually the system serving a single unit — is the owner’s responsibility, while the association governs what may be attached to exterior surfaces. In practice: you hire the licensed contractor, and the association approves the routing. Contractors who work attached housing handle that paperwork routinely.
The unit next door tested low. Doesn’t our shared wall mean we should match?
No — attached units regularly test differently. Each unit sits on its own slab section with its own cracks, penetrations, and pressure behavior, and the shared wall says nothing about what rises from the soil below your specific footprint. Test your unit; treat your unit’s number as the only one that is yours.
Which county are we in, and does the split matter for hiring?
Algonquin spans McHenry and Kane counties, and it matters not at all for radon: licensing is statewide through IEMA-OHS, and we route the whole village through one territory so every Algonquin request follows the same path. Save the county question for the assessor’s office.
What should we expect to pay?
We publish a detailed cost guide rather than quoting from a city page, because Algonquin spans simple single-slab installs and multi-zone older homes. Broadly, straightforward suburban systems in this region are commonly quoted in the low four figures, with complexity — extra suction points, difficult routing, older foundations — moving the number up. Free quotes from two or three licensed bidders will bracket your house quickly.
Ready for real Algonquin numbers?
Two minutes to request. Your postcode is checked against coverage before you are asked for contact details, and the confirmation tells you exactly what happened to the request.
Sources
- U.S. EPA — Radon
- U.S. EPA — Consumer’s Guide to Radon Reduction
- IEMA-OHS — Illinois Emergency Management Agency and Office of Homeland Security — Radon Program
- IEMA-OHS — Radon Active Licensee Listing (Radon Tracking System)
- Illinois General Assembly — Illinois Radon Awareness Act (420 ILCS 46)