Turnkey, Item-Rate or Labour-Rate: How to Contract Your Build in India

Most homeowners in India spend weeks choosing tiles and about ten minutes choosing a contract model. That is the wrong way round. The tiles affect how the house looks. The contract decides who pays when cement goes up 18 per cent, who is liable when a slab is badly cured, and what happens when the build runs four months late. 🏗️

There are four models in common use. None of them is best; each one moves risk to a different party, and the right question is which risks you are able to carry yourself.

1. Turnkey, or lump-sum

The contractor quotes one price for a defined scope and delivers a finished house. Materials, labour, supervision and wastage are all theirs to manage.

• You carry: the risk that your specification was vague. Everything not written down is an extra.
• They carry: price escalation, wastage, labour productivity, and the cost of their own mistakes.
• Best when: your drawings and specifications are complete, you want a predictable number, and you cannot be on site often.
• Watch for: quality substitution. When the price is fixed, every rupee saved on material is the contractor's to keep. This model needs the tightest specification and the most independent inspection of the four.

A turnkey price with a one-page scope is not a fixed price. It is an opening bid.

2. Item-rate, or schedule of rates

The contractor quotes a rate for each item of work (per cubic metre of concrete, per square metre of plaster, per kilogram of steel) and you pay for the quantity actually executed, measured on site.

• You carry: quantity risk. If the design needs more concrete than estimated, you pay for more concrete.
• They carry: the rate. Their productivity and their wastage are their problem.
• Best when: the design may still evolve, and you want the flexibility to add or drop work without renegotiating the whole contract.
• Watch for: measurement. This model lives and dies on honest joint measurement, recorded in a measurement book both sides sign. Also watch the rate for items likely to grow: an inflated rate on a small quantity becomes a large number once the quantity triples.

This is the model most public works in India use, for good reason: it is auditable.

3. Labour-rate, with owner-supplied materials

You buy every bag of cement, every rod of steel and every tile yourself. The contractor is paid only for labour, usually per square foot of built-up area or per item of work.

• You carry: procurement, storage, wastage, theft, delivery timing and cashflow. All of it.
• They carry: labour productivity only.
• Best when: you are genuinely available near daily, you have somebody trustworthy to manage stores, and you care intensely about material quality.
• Watch for: the true cost of your own time, and the fact that material shortfalls become idle-labour claims. If steel arrives three days late, the crew still has to be paid.

This is the cheapest model on paper and the one most likely to overrun in practice, because the owner becomes the project manager without meaning to.

4. Cost-plus

You reimburse actual, documented cost and pay a fee (a percentage or a fixed amount) on top.

• You carry: essentially all cost risk.
• They carry: almost none, which is exactly the objection.
• Best when: the work genuinely cannot be defined in advance: heritage restoration, complex retrofits, structural repair where you cannot know what you will find.
• Watch for: the incentive. A percentage fee rewards a larger bill. If you use this model, cap the fee in absolute terms, agree an open-book audit right, and set a target cost with a shared-saving clause.

The clauses that matter more than the model

Whichever structure you pick, these are the provisions that decide how the job actually goes.

• Scope and specification, by reference. The contract should name the drawings and specification sheets by number and date, and say that those documents form part of it. Loose talk about "standard finishes" is where disputes are born.
• Price escalation. Say explicitly whether the price is firm, and if not, which materials are subject to adjustment, against which published index, and with what cap. Silence here is decided later by whoever has more leverage.
• Payment against milestones, not dates. Foundation complete, plinth level, each slab cast, brickwork complete, plaster complete, and so on. Money should follow work, never the calendar.
• Retention. Hold back 5 to 10 per cent of each running bill, released after the defect liability period. This single clause resolves more handover problems than any other.
• Defect liability period. Twelve months after handover is common; longer for waterproofing. State clearly who fixes what, and at whose cost.
• Delay and liquidated damages. A stated per-week amount for delay attributable to the contractor, and an honest list of what counts as an excusable delay: including your own decisions. An owner who changes the kitchen layout in month five has extended their own programme.
• Variation procedure. Any change to be priced and approved in writing before it is executed. Almost every large overrun is a stack of small unrecorded variations.
• Statutory compliance and insurance. Labour welfare obligations, worker safety, and a contractor's all-risk and workmen's compensation policy. Ask for copies of the policies, not assurances.
• Termination and exit. How the contract ends if things go wrong, how work-in-place is valued, and who owns the material on site. Write this while everyone is still friendly.
• Dispute resolution. Name the forum and the seat. Arbitration is common in larger contracts; for a house, a named mediator is often more practical.

Where your architect fits

The contract is between you and the contractor: but the architect usually writes the scope, checks the measurements, certifies the running bills and inspects the work. Whether they do all of that, and how often they visit, should be settled in their appointment letter before you tender the build.

Two things worth insisting on. First, that the person certifying quality is not the person being paid for the work: quality certification and execution should not sit in the same hands. Second, that the visit frequency is written down as a number, not left as "periodic supervision".

Our guide to the clauses to read carefully in an architect's contract covers that side of the arrangement.

A quick comparison

• Turnkey: most price certainty, least flexibility, highest quality-substitution risk. Needs complete drawings.
• Item-rate: flexible, auditable, quantity risk on you. Needs honest measurement.
• Labour-rate: cheapest headline, maximum control, maximum demand on your time.
• Cost-plus: for genuinely undefinable work only, and only with a capped fee and an audit right.

Frequently asked questions

Which model is cheapest for building a house in India?

Labour-rate with owner-supplied material usually produces the lowest total spend if you can actually run procurement and be present. Costed honestly (including your time, wastage, storage and idle-labour claims) the gap against a well-tendered item-rate contract narrows a great deal.

Can I mix models?

Yes, and good projects often do: item-rate for the structure, turnkey for the modular kitchen and wardrobes, labour-rate for finishing trades where you want to choose the material. Keep each package a separate written agreement so responsibility does not blur at the boundaries.

How much advance is normal?

A mobilisation advance of 5 to 10 per cent is common, and it should be recovered proportionally from subsequent bills rather than simply forgotten. Be wary of any structure where payment consistently runs ahead of completed work: that is how a stalled site becomes your problem rather than the contractor's.

Do I need a written contract for a small renovation?

Yes. The size of a job has no relationship to the size of the argument it can produce. Even a two-page agreement naming the scope, the price basis, the payment milestones and the defect liability period is vastly better than a WhatsApp thread.

What if the contractor asks for a price rise mid-project?

Go back to the escalation clause. If the contract is firm-price and the request is not supported by a clause, it is a request rather than an entitlement: but a contractor who is genuinely underwater is a risk to your build too. Negotiate against the remaining scope, document whatever you agree as a formal variation, and never pay ahead of work as part of the settlement.

The contract model matters, and so does who you sign it with. You can browse architects on Member of Architecture, see the projects they have delivered and message them directly: no commission on either side.

This article describes contracting practice commonly used in Indian residential construction. It is not legal advice, and no clause described here is a substitute for an advocate reviewing your specific agreement.