An interior project budget should connect design fees, procurement and delivery rather than treating the concept as a separate purchase with no cost consequences. Early selections can shape later spending, while incomplete site information can create changes. Build a transparent cost plan with stated assumptions and update it at meaningful design decisions.
An interior project budget should connect design fees, procurement and delivery rather than treating the concept as a separate purchase with no cost consequences. Early selections can shape later spending, while incomplete site information can create changes. Build a transparent cost plan with stated assumptions and update it at meaningful design decisions.
Record design and specialist fees, proposed works, furniture or equipment, and project support as appropriate to the actual scope. Identify items supplied by the client and items included in a contractor offer. This prevents a product appearing in a design image from being assumed to exist in the construction price.
Use the client's available information to establish an initial allowance and mark uncertainty. Do not present an early concept estimate as a fixed project cost. Ask the responsible cost or procurement reviewer to identify which assumptions need quotations or further design before they can be relied upon.
For material items, obtain the specification, quantity basis and relevant commercial information before approval. Confirm delivery, installation and related components where they affect the usable result. A unit price without those dependencies may understate the cost of the selected finish or furnishing package.
Ask how alternatives will be reviewed if an item is unavailable or exceeds the allowance. Keep appearance, technical suitability and cost decisions with their appropriate owners. A cheaper substitution should not bypass the same relevant review applied to the original selection.
Identify unresolved site conditions, access constraints and design decisions. Use a proportionate contingency based on the project team's assessment rather than an invented universal percentage. Keep the reason for the allowance visible so it can be reduced or revised as information improves.
Include transition or temporary operating arrangements where the premises remain in use. These costs may sit outside the designer's fee while still affecting the project's feasibility. Assign an owner to confirm them instead of assuming that operations will absorb the disruption without consequence.
Update the cost plan when the design becomes more detailed and before long-lead orders or works are committed. Compare the current estimate with the approved budget and explain changes. A useful budget review leads to a specific decision about scope, selection or timing, rather than discovering at tender that the accepted concept cannot be delivered within the client's available funds.
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