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

A turnkey (lump-sum) contract fixes one price for a defined scope, so the contractor carries quantity risk. An item-rate contract fixes unit rates and measures actual work done, so the client carries quantity risk but sees exactly what each element costs. Turnkey suits a settled design and a fixed budget; item-rate suits a design still evolving.

By Dhruv Agarwal · · 3 min read

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

FactorTurnkey (lump sum)Item-rate (schedule of rates)
What is fixedThe total price for a defined scopeThe unit rate for each item
Quantity riskContractorClient
Design maturity neededHigh — scope must be completeModerate — rates survive change
VariationsRenegotiated, low leverageMeasured at agreed rates
Client admin effortLowerHigher — measurement must be checked
Cost visibilityOne number, limited breakdownElement-by-element
Best whenDesign is frozen, budget is fixedDesign is evolving, control matters
Risk allowancePriced in, paid regardlessNot 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

Each structure suits a different set of conditions:

Turnkey fitsItem-rate fits
DesignA floor that is fully drawn and specifiedA layout that will keep developing
Budget and costA board-approved budget that must not moveA client who wants to see what each element costs
MeasurementA client team without the capacity to measure workA job where a professional will be checking measurement
Other signalA programme where speed matters more than line-item visibilityWork behind existing finishes, where quantities cannot be known until opening up

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.

Standards referenced

  • IS 1200 — Method of measurement of building and civil engineering works (Bureau of Indian Standards)

Frequently asked

Turnkey, on the day you sign — one number for one scope. But that certainty only holds if the scope is genuinely complete. If drawings are still developing, the variations that follow are priced without competitive tension, and the final account can land well above the lump sum. Item-rate gives less certainty at signing and more control afterwards.

Neither reliably. A turnkey price includes a risk allowance for the quantities the contractor cannot verify; you pay for that whether or not the risk materialises. An item-rate contract removes that allowance but exposes you to the real quantity. On a well-documented job item-rate often lands lower; on a vague scope turnkey usually does, because the alternative is an open-ended measure.

Under item-rate, a variation that uses an existing item is simply measured at the agreed rate — no negotiation. Under turnkey, anything outside the defined scope is a new negotiation at a point where you have no competitive leverage. This is the single biggest practical difference between the two.

Commonly, and it is often the sensible answer. Settled, fully drawn elements go lump-sum; elements that depend on site conditions or late decisions — services alterations, civil work behind existing finishes, loose furniture — sit on a schedule of rates. The contract has to say clearly which parts are which.

Measurement discipline. Someone on the client side has to check quantities as work proceeds, against a stated method of measurement such as IS 1200. Without that, an item-rate contract becomes an invoice you cannot challenge. If nobody is available to do this, turnkey is the safer structure.

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