Cost guide

Vapor Intrusion Cost: State Program Figures

Last reviewed November 2026. Primary sources were accessed November 7, 2026. Dates are Mountain Standard Time (Phoenix).

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The install range below is from a Nevada fact sheet about a 2008 program. It is not a current national price.

What the data shows

Primary sources first. A current national price for a homeowner buying a vapor-intrusion system was not found. The install range below is from a Nevada fact sheet about systems the state offered after a 2007–2008 indoor-air study.

Nevada DEP Maryland Square fact sheet

Government · 2008 program described in the sheet · Accessed Nov 7, 2026

Sub-slab depressurization systems used to reduce PCE in indoor air typically cost from $2,000 to $20,000 per home. The sheet says the same type of system is used for radon. It describes testing in fall 2007 and early spring 2008, installation in October and November 2008, and follow-up changes where the first install did not bring PCE under the interim action level. It says the state offered the systems at no cost to those homeowners.

Confidence: Low

Indiana IDEM vapor mitigation fact sheet VAM0322L

Government · Fact sheet VAM0322L · Accessed Nov 7, 2026

No install price. A typical system can be installed in one to three days, depending on complexity. The responsible party hires and pays the environmental professionals. Electricity for a fan is generally less than $100 per year. The sheet's code is VAM0322L. It does not print a publication month in a sentence.

Confidence: Medium

Current homeowner price to buy a vapor-intrusion system

Government / industry survey · n/a · Accessed Nov 7, 2026

Not found

Confidence: Low

Typical range for homeowners

Nevada DEP, sub-slab system for PCE

$2,000 to $20,000 per home (Nevada DEP Maryland Square fact sheet)

How it was derived

We did not calculate it. Nevada DEP states that the systems typically cost from $2,000 to $20,000 per home. The sheet is about a 2008 installation program, and the state paid for those systems.

Operating cost

Indiana IDEM says electricity for a fan is generally less than $100 per year, and that the responsible party pays to install and maintain the system (Indiana IDEM vapor mitigation fact sheet VAM0322L). That is not an install price.

What it is not

A 2026 bid, and not the radon survey range. Radon uses similar fans and pipes. The radon cost guide is the place for radon figures. Copying them onto this page would treat two jobs as one price.

Confidence

Low for the install range, because the program described is 2008.

What the fact sheets say changes the job

  • The building. Nevada says footers or tight soils can keep suction from covering the slab, and the fix can be a larger fan or more suction points (Nevada DEP Maryland Square fact sheet). The sheet does not price those changes separately from the $2,000 to $20,000 band.
  • Who pays. Indiana says the responsible party hires and pays for installation and maintenance. A homeowner shopping for a system without a responsible party was not given a price on that sheet (Indiana IDEM vapor mitigation fact sheet VAM0322L).
  • Time on site. Indiana says a typical system can be installed in one to three days, after a walk-through and design. Scheduling depends on the building and on the resident.
  • Follow-up sampling. Indiana describes indoor-air sampling and pressure testing about 30 days after startup, then later monitoring, at the responsible party's cost. No dollar figure is attached to the sampling.

FAQ

How much does vapor intrusion mitigation cost?

Nevada DEP says sub-slab systems for PCE typically cost from $2,000 to $20,000 per home (Nevada DEP Maryland Square fact sheet). That sheet describes systems installed in 2008 and offered at no cost to the homeowners in that program. A current price for a homeowner buying a system was not found.

Is that the same as a radon system?

The same type of fan-and-pipe system. Nevada says so, and so does Indiana. The dollar figures on the radon cost guide are for radon. They are not reused here.

Who pays for the system?

In the Indiana fact sheet, the responsible party hires and pays the people who install and maintain it (Indiana IDEM vapor mitigation fact sheet VAM0322L). In the Nevada program, the state offered the systems at no cost to the homeowners it had tested (Nevada DEP Maryland Square fact sheet).

What does it cost to run?

Indiana says electricity for a fan is generally less than $100 per year (Indiana IDEM vapor mitigation fact sheet VAM0322L).

How long does installation take?

Indiana says a typical system can be installed in one to three days, depending on complexity, after design and scheduling (Indiana IDEM vapor mitigation fact sheet VAM0322L).

Why is the install range low confidence?

The Nevada figure is tied to a 2008 program, which is before 2022, so the confidence key marks it low even though a state agency stated it. It is also a wide band. A listing in the directory is a license on record, not a price for a system.

How we built these numbers

  • Source order: we start with government sources (EPA, HUD, state agencies), then public bid or contract unit prices (state contracts, school districts, cities), then industry survey data. Angi, HomeAdvisor, This Old House, HomeGuide and Fixr are shown only in a separate consumer-reported section and are not used to set the headline ranges.
  • Each figure in the tables is one we read on the cited page or document, with the source type, year, link, confidence and the date we accessed it (Mountain Standard Time, Phoenix). Where we found nothing, the table says Not found.
  • Typical ranges are our own arithmetic, with one sentence on how each was derived. We do not average bids of different scope, and a range is only as good as the sources it rests on, which is why each one carries a confidence rating.
  • Public bid prices are unit prices from institutional buyers, and they may include prevailing-wage rules and larger project sizes. They are examples of what contractors bid, not residential averages.
  • We do not use proprietary estimating databases such as RSMeans, Xactimate or HomeWyse, and we do not quote them.
  • We plan to add quotes collected from contractors in our directory later, and will label them as a separate source type.
  • Confidence key: High means a government source states the figure directly or two independent primary sources agree. Medium means one primary source read in full, or primary sources that agree only loosely. Low means dated before 2022, unclear scope, a program budget estimate or a single source. Consumer-reported rows are capped at Medium.
  • We refresh figures at least twice a year and show the last-reviewed date. Where a contractor listing is mentioned, the directory's phrase is license on record.

Sources

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Related guides

The hardware is the same family as a radon system. The radon mitigation cost guide cites survey and state-program figures for radon. Those dollar figures are not repeated here, because they are not a price for solvent vapor.