Turnkey vs Item-Rate Fit-Out Contract: Which Protects the Budget

Why this choice reaches the board

Most fit-out overruns are not caused by bad pricing. They are caused by a contract structure that did not match how settled the design was.

A finance director who has approved a number wants that number to hold. A project lead who knows the layout will change until late wants the flexibility to change it without a negotiation each time. Those are different instruments, and choosing the wrong one is what produces the final account that nobody expected.

The structural difference

Factor	Turnkey (lump sum)	Item-rate (schedule of rates)
What is fixed	The total price for a defined scope	The unit rate for each item
Quantity risk	Contractor	Client
Design maturity needed	High — scope must be complete	Moderate — rates survive change
Variations	Renegotiated, low leverage	Measured at agreed rates
Client admin effort	Lower	Higher — measurement must be checked
Cost visibility	One number, limited breakdown	Element-by-element
Best when	Design is frozen, budget is fixed	Design is evolving, control matters
Risk allowance	Priced in, paid regardless	Not priced in

The part people miss: leverage moves after signature

Before signature you have competitive tension — several contractors want the job. After signature you have one.

Under item-rate, that shift matters less, because the rates for common items are already agreed. A change that adds twenty square metres of partition is measured and paid at a rate you competed on.

Under turnkey, the same change is a fresh negotiation with a single party who knows you cannot easily go elsewhere mid-project. This is why turnkey rewards a complete scope and punishes a vague one.

Where each one genuinely fits

Turnkey fits a floor that is fully drawn and specified, a board-approved budget that must not move, a client team without the capacity to measure work, and a programme where speed matters more than line-item visibility.

Item-rate fits a project where the layout will keep developing, work behind existing finishes where quantities cannot be known until opening up, a client who wants to see what each element costs, and any job where a professional will be checking measurement.

Measurement is the hidden requirement

An item-rate contract is only as good as the measurement behind it. That means naming a method — IS 1200 is the standard reference for building works in India — and agreeing how each item is measured before work starts, not while invoices are being argued.

The recurring failure is an item-rate contract signed without anyone on the client side available to verify quantities. At that point you have accepted quantity risk and given up the control that was supposed to compensate for it.

Mistakes that cost real money

• Signing turnkey against an incomplete scope. Every gap becomes a variation priced without competition. This is the most expensive mistake on this page.
• Assuming the lump sum is the final figure. It is final only for the scope defined. Read what is excluded as carefully as what is included.
• Choosing item-rate with nobody to measure. Control you cannot exercise is not control.
• Leaving the rate schedule incomplete. Any item missing from the schedule becomes a negotiation — the exact problem item-rate was chosen to avoid.
• Comparing bids across different structures. A turnkey price and a measured estimate are not comparable numbers, and putting them side by side in a board paper misleads everyone reading it.

Standards referenced

IS 1200 sets the method of measurement for building and civil engineering works in India, and is the usual reference point for defining how item-rate quantities are measured. The commercial terms themselves are a matter for the contract and for legal advice.