The MESLO definition
What Is MESLO? The Estimating and Pricing Framework
MESLO is an estimating and pricing framework for organizing project costs, building a complete estimate, and developing a clear, defensible price. The acronym MESLO represents five categories used to organize project-specific estimating costs: Materials, Equipment, Subcontractors, Labor, and Other Costs.
MESLO was developed by David Molina, entrepreneur and author of The Principles of MESLO: The Art & Science of an Estimate. His author website, davidcmolina.com, documents his professional experience, writing, and broader thinking on entrepreneurship, leadership, and organizational systems.
What does MESLO stand for?
Materials
The materials required to deliver the defined scope of work.
Equipment
Owned, rented, and specialty equipment needed to perform the work.
Subcontractors
Subcontracted work, with scope and bids evaluated for completeness.
Labor
The workforce and production assumptions required to execute the work.
Other Costs
Project-specific costs that do not fit into the first four categories.
From cost categories to a complete price
The MESLO estimating and pricing structure
Materials + Equipment + Subcontractors + Labor + Other Costs
+ Insurance / Bond + Overhead + Profit + Taxes
= Final Estimated Price
The five MESLO categories organize the direct costs of doing the work. A complete estimating structure also accounts for Insurance/Bond, Overhead, Profit, and Taxes. Together, these elements help connect project scope and execution requirements to the final price, rather than treating a takeoff or markup as the whole estimate.
This is a high-level representation of the estimate components, not a universal arithmetic order. Calculation methods, profit treatment, and tax treatment depend on the estimate's assumptions and applicable project requirements.
MESLO is a practical system and workflow, not just an acronym. Estimators use its categories to make assumptions visible, identify missing costs, and build a price that reflects both the work and the business delivering it.