Most teams that run projects, field service, or make-to-order jobs on Odoo build an estimate in a quotation, a spreadsheet, or an analytic budget line — and then lose the thread the moment work starts. Odoo core gives you sale.order lines, analytic accounts, and (on some editions) analytic budgets, but there is no first-class object that says "this is the estimate for Job #142, broken into labour, materials, subcontract and overhead, and here is what we have actually committed and spent against each line." Estimate-versus-actual becomes a manual pivot exercise, cost overruns surface only after invoicing, and the person who quoted the job never learns whether their numbers held. That gap is exactly what this build-to-order module closes.

We build a dedicated job.cost.sheet model with job.cost.sheet.line children that is generated directly from an approved estimate — whether that estimate lives on a sale.order, a project.project, an mrp.production, or a custom quoting object you already use. A method seeds each cost-sheet line with its estimated quantity, unit cost, and estimated total, grouped by a configurable cost category (labour, material, subcontract, equipment, overhead — defined in data, not hard-coded). From there the sheet pulls actuals through Odoo's analytic backbone: compute fields marked @api.depends roll up account.analytic.line records (timesheets, vendor bills, inventory moves, expenses posted against the job's analytic account) into actual cost per category, then derive committed cost from open purchase orders, variance amount, variance percentage, and percent-complete. The result is one screen where estimated, committed, actual, and remaining sit side by side and recompute as the job progresses.

Technically the deliverable is a proper Odoo addon: a clean __manifest__.py declaring dependencies (typically project, analytic, sale, purchase, and hr_timesheet as your scope requires), ORM models with the compute/store trade-offs chosen deliberately for report performance, form/list/pivot/graph views in XML (OWL components only where they add real value), and a QWeb PDF cost-sheet report suitable for internal review or client sign-off. Access is enforced through ir.model.access.csv plus record rules so estimators, project managers, and finance each see the right slice, with multi-company rules where relevant. Optional automated actions can flag a job the moment actual cost crosses a variance threshold, and every field is reachable over the XML-RPC/JSON-RPC API for BI tools or upstream systems. We target your exact edition and version — Community or Enterprise, Odoo 17.0, 18.0, or 19.0 — because analytic budgeting and some accounting hooks differ between them, and we will not pretend a Community build has Enterprise-only objects.

Because this is made to order, nothing ships until we agree on scope. We start with a short scoping call to confirm your estimate source, your cost-category structure, which actual-cost streams you post today, and your reporting needs; from there you get a fixed written quote and a delivery plan. Typical delivery is one working week from confirmed scope, on a staging copy of your database first, with UAT and a rollback plan before anything touches production. Pricing starts from $999 (indicative, single-company base scope on one Odoo version); multi-company consolidation, additional estimate sources, deeper localization of cost accounting, historical data migration volume, and extra edition/version targets increase the quoted scope.