---
title: "What Is OPC (Opinion of Probable Cost)? | Calibre Glossary"
description: "An opinion of probable cost is a preliminary, order-of-magnitude budget estimate of the cost to remedy a physical deficiency, based on professional."
url: https://calibre.multisites.ai/glossary/opinion-of-probable-cost
publisher: Calibre Commercial Inspections
phone: "+1-208-305-6245"
email: Schedule@CalibreCBI.com
---

Costs and capital planning

# Opinion of Probable Cost (OPC)

An opinion of probable cost is a preliminary, order-of-magnitude budget estimate of the cost to remedy a physical deficiency, based on professional judgment rather than a contractor bid.

## Why it matters

ASTM E2018 describes opinions of cost as budgetary projections that help the user understand building condition. Actual prices vary with contractor, timing and scope found during repair. Reports often show ranges and list exclusions.

Source: [store.astm.org](https://store.astm.org/e2018-24.html)

[Related Calibre serviceCost-to-Cure Reports](https://calibre.multisites.ai/cre-services/cost-to-cure-reports)

## Where we discuss it

-   [Immediate Repairs vs. Replacement Reserves in a Property Condition Assessment](https://calibre.multisites.ai/cre-inspector-insights/immediate-repairs-vs-replacement-reserves-pca)
-   [PCA vs CBI: Which Commercial Inspection Report Works Best for You](https://calibre.multisites.ai/cre-inspector-insights/pca-or-cbi-which-inspection-report-works-best-for-you)

## Ready for your next inspection?

Tell us about the property and your timeline. We will scope the right report and send a proposal.

[Request a proposal](https://calibre.multisites.ai/request-proposal) [(208) 305-6245](tel:+12083056245)