GPR scanning is usually priced by time on site plus mobilization, with the main drivers being scan area, access, deliverable complexity, and island logistics. A small pre-coring slab scan is typically a short single-visit engagement; a multi-acre utility investigation is a planned project with survey integration.
In Hawaiʻi, interisland mobilization can be a meaningful component — equipment and crews may travel between islands, and that cost is real and should be disclosed, not buried.
HAWAII Engineering prices GPR work from the standard $199/hour starting rate, with equipment, mobilization, and specialist interpretation disclosed before deployment. For planning purposes, describe the location, the surface (slab, pavement, soil), the area, and what decision the scan supports — that determines the approach and the cost more than anything else.
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Start with a one-hour technical assessment at $199 — you keep the diagnosis either way.
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This article is general information, not engineering, legal, or safety advice for any specific project. Site-specific conclusions require assessment by qualified — and where required, licensed — professionals.