Odoo - Measurement and progress statements module

In construction, infrastructure, and installation work, a project rarely runs in one neat stretch from quote to final invoice. Works span months, sometimes years, and the contractor invoices based on what has actually been completed at each stage - through measurement and progress statements. That sounds simple, but anyone who has tried to manage it in Excel or a generic ERP knows how quickly it strains: figures that no longer match the contract, progress statements that have to be redrawn manually after every change, disputes afterwards about what has already been invoiced.

We built a module that integrates measurement and progress statements as a first-class part of project and invoicing flow in Odoo. A measurement statement is created as a structured list of items, linked to the project or contract, with an agreed quantity and unit price per item. Progress statements build on that: for each period, you indicate the percentage or quantity actually completed, and the module automatically calculates the amount to invoice - taking into account what has already been billed in previous statements.

How it works

A measurement statement acts as the contract baseline. A progress statement is a snapshot of how far the work has advanced: cumulative quantities completed, minus what has already been invoiced, gives the amount of this interim invoice. 

The module supports the common contract types - estimated quantities, lump-sum items, sums over a whole - so the structure matches how the sector actually works.

For contractors and installers this lowers both the administrative burden and the dispute potential with the client. What gets invoiced is what was measured and approved - in black and white, in the same system as the rest of the accounting.