Define the model
Document inputs, calculation rules, assumptions, rounding, limits, and the intended decision.
COMMERCIAL SERVICES
COMMERCIAL SERVICES / WEBSITES + DIGITAL
Customers can struggle to understand pricing, options, or the value of a service. A custom tool makes the decision model explicit and gives the visitor a practical way to explore it.
Build a scoped interactive estimator, configurator or browser-based tool.
Calculation specification and assumptions
Responsive interactive interface
Validation and boundary test cases
Operating and change-control documentation
The formula and interface are treated as one product: assumptions are shown where people make the decision, and edge cases are tested before release.
Document inputs, calculation rules, assumptions, rounding, limits, and the intended decision.
Design responsive controls and result states that explain how the estimate or recommendation is produced.
Test normal values, boundaries, invalid inputs, and any approved export or inquiry handoff.
The rate-card scope factors are shown below. Client complexity is applied separately.
One focused calculation model, one interface, and a defined set of result states.
A broader model with several scenarios, conditional inputs, and an agreed sharing or inquiry flow.
A complex tool with multiple models, approvals, and specifically scoped data or platform integrations.
A planning range using the same rate card as the full DOC N.I.L. calculator.
Validate calculation accuracy against approved examples, input usability, and completion of the intended next step.
A service company can give prospective clients a transparent planning estimate while showing which variables require a formal quote.
The proposal confirms quantities, review rounds, locations, versions, and the service period. Additional work receives a written change scope before it starts.
8% G&A is additional. Third-party costs and applicable tax are confirmed separately. Estimates are planning ranges, not a booking or a guarantee of results.
Only if the company approves the pricing rules and commercial terms for that purpose. A planning tool should clearly identify its limits.
Yes. The agreed inputs, rules, rounding, exclusions, and test cases form part of the handoff.
Separate products. Connected when the brief calls for them.