How the cost figures on this site are built
Where every price range on this site comes from, what was and was not done to the numbers, and why none of it is a quote.
Start with what these numbers are not
Nothing published on this site is quote data. Raleigh Crawlspace Pros has never collected, and does not hold, a database of what Triangle contractors actually charged anybody. Every figure on the cost pages was read out of somebody else's published cost guide, and it is worth exactly what a published cost guide is worth: a way to tell whether a quote is roughly where it should be, and nothing more precise than that.
That is stated here at length, and in one sentence on every page that shows a price, because a table of dollar figures looks authoritative whether or not it has any right to. The basis for everything here is: published cost guides, cited and dated.
The standard
Rules every published figure has to meet
Published so a reader can hold the cost pages to them, rather than take the word of a page that says it is careful.
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A figure is read off a named document, on a recorded date
Every range on the cost pages was taken from a specific published guide, and the row carries that publisher, the document, the date the document itself shows, and the date somebody last opened it to confirm the figure is still there. Nothing is quoted from memory, and nothing is carried forward from an older version of this site without being re-checked.
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Ranges are not blended, averaged or nudged
A published range is reproduced as the source states it. Where several sources disagree, the row publishes one source’s figure as the range and names the others alongside it, rather than averaging them into a tidier number whose provenance nobody can check. This rule exists because it was broken: the encapsulation range on this site was for a time published as $5,200-$9,200 attributed to a source that said $3,315-$7,395, and no record of the adjustment existed. It was corrected on 2026-09-15 to a figure the named source actually prints for this metro.
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The kind of source is stated, because they are not equivalent
An aggregator that models national figures, an editorial cost guide, and a contractor publishing its own prices are three different sorts of evidence. Each row says which it is. None of the sources behind this site’s cost pages is a primary source in the sense that a building code or a licensing register is - there is no public register of what crawl space work sells for.
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National figures are labeled as national
Some of the sub-item pricing - drainage per linear foot, mold remediation per square foot, sump pump installation - has no North Carolina-specific published figure, so a national one is used and the row says so in its own source line. A national figure presented as a local one is the most common way a cost page misleads without stating anything false.
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Sub-items do not add up to a job, and the page says so
Per-joist, per-linear-foot and per-square-foot figures describe pieces of work priced separately. Adding them together does not produce a project price, because it omits mobilization, access, disposal and the contractor’s own overhead. The detail tables state this rather than leaving a reader to build a total that will not resemble any quote.
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Review dates move when the work is done, not when the site deploys
A "checked" date changes when someone reopens the source and confirms the figure, and at no other time. That is why several dates on this site are older than its most recent build. An out-of-date verification is honest; one that advances automatically makes every date here worthless.
The evidence base
Who published the figures
Every publisher behind any number on the cost pages. Each individual row names its own document and date beside the figure.
- Angi
- Carolina Home Problem Report
- CrawlSpaceCosts.com
- Fixr
- LawnStarter
- RestoreAdvisor
- This Old House
Oldest-to-newest, the whole set was last re-checked on , and is next due on March 15, 2027. Cost guides are revised without notice, so a figure here can be correct on its check date and out of date by the time you read it - the check date is printed next to every number so you can judge that for yourself.
The bar
What would have to be true to call these real prices
Stated in advance so the same numbers cannot quietly be relabelled later as something stronger than they are.
If you think a figure here is wrong
Tell us, with or without a source of your own. A price that has moved, a guide that has been revised, or a range that never matched its source in the first place is worth knowing about - the correction on this page exists because that last one happened here. Write to hello@raleighcrawlpros.com.
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