# 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.

## 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

Each structure suits a different set of conditions:

| | Turnkey fits | Item-rate fits |
| --- | --- | --- |
| Design | A floor that is fully drawn and specified | A layout that will keep developing |
| Budget and cost | A board-approved budget that must not move | A client who wants to see what each element costs |
| Measurement | A client team without the capacity to measure work | A job where a professional will be checking measurement |
| Other signal | A programme where speed matters more than line-item visibility | Work 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.

## Frequently asked questions

### Which contract type gives more cost certainty?

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.

### Which is cheaper overall?

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.

### How are variations handled differently?

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.

### Can the two be combined?

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.

### What does an item-rate contract need that turnkey does not?

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.

## Sources

- [IS 1200](https://standards.bis.gov.in/website/published-standards/department-wise) — Method of measurement of building and civil engineering works

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Source: https://hagerstone.com/compare/turnkey-vs-item-rate-fit-out-contract