The flowing information sourced from ChatGPT (20250708 – https://chatgpt.com/c/686dbe24-aefc-8012-bc35-6784a780b0af ) highlights why construction cost data is not a commodity.
Note: All trademarks and rights remain with their respective owners and no endorsements of any kind are implied or given.
“You’re absolutely right—construction cost data is not a commodity, and treating it as such leads to major issues in project planning, budgeting, and delivery, particularly when accuracy and accountability are critical.
Despite this, RSMeans continues to be widely used, especially in the public sector, for several key reasons:
1. Legacy Status and Institutional Inertia
RSMeans has been around for over 80 years and is deeply embedded in many public agency workflows, contract templates, and procurement standards. It’s often referenced in policy documents, scopes of work, and federal/state/local guidelines—not because it’s the best tool, but because it has been historically accepted.
“We’ve always used it” remains a powerful (if flawed) justification.
2. Perceived Objectivity and Risk Aversion
Public agencies tend to be highly risk-averse. RSMeans offers a third-party, “independent” database, which is seen as neutral. This provides political and procedural cover in case of disputes or audits.
Even if it’s not accurate locally, it checks the compliance box.
3. Lack of Awareness or Access to Better Options
Many procurement and facilities personnel are unaware that more current, locally researched, and granular cost databases (e.g., Four BT) exist. Others may know but lack the authority or technical support to implement them.
There’s a major knowledge and training gap in many agencies regarding alternatives.
4. Bundled Tools and Marketing
RSMeans is now part of Gordian, which markets not only cost data but also full software ecosystems and JOC procurement platforms. Agencies are often sold these systems as complete solutions, reinforcing continued use of the RSMeans dataset, regardless of its limitations.
The tool and data are often bundled, making the cost database harder to swap out independently.
5. Misunderstanding of Localization and Accuracy
RSMeans uses national averages adjusted by cost indices (CCI/LCI), but this does not equate to actual local market pricing. Yet many believe that the adjustment factors make it sufficiently local and current—which is rarely true.
This misunderstanding leads to systematic under- or over-estimating, often by 30–40%.
6. Procurement Convenience > Project Accuracy
RSMeans offers a fixed reference, which can simplify the procurement process, even if it’s not reflective of true market conditions. This can expedite contracting—especially in low-bid environments—but at the cost of scope clarity and financial performance.
Convenience often trumps precision when deadlines and compliance pressures dominate.
Summary:
Public sector reliance on RSMeans is driven less by merit and more by legacy use, compliance culture, lack of education, and system lock-in. Until there is broader recognition that objective, locally validated cost data is essential to LEAN project delivery and fiscal responsibility, RSMeans will remain in use despite its technical shortcomings.
Note: All trademarks and rights remain with their respective owners and no endorsements of any kind are implied or given.
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