By Siddaganga Real Estate8 min read

Once your plot is ready and your plan is sanctioned, the person you trust to build your house becomes the most important choice you make. A good contractor turns drawings into a sound, well-finished home; a poor one can leave you with delays, disputes and defects that surface years later. Choosing well is less about luck than about process. This guide explains the three common ways to engage a contractor — labour-only, item-rate and turnkey — how to vet someone before you hire them, what a written contract must specify, why independent supervision by an engineer or architect is worth it, and the red flags that should make you walk away. It is general guidance, so have a lawyer look over your contract before you sign.
Three common ways to hire a contractor
Contracts for building a house usually take one of three forms.
Labour-only. You buy the materials — cement, steel, sand, bricks, tiles, fittings — and the contractor supplies the workers and builds. You get the most control over materials and can see exactly what goes in, but you also carry the most work: ordering, storing and checking materials, preventing wastage and keeping the site supplied so work does not stop.
Item-rate. The contractor is paid an agreed rate for each item of work, such as concrete, brickwork, plastering or tiling, based on measured quantities. Materials may or may not be included. It is transparent, but it relies on careful measurement of the work actually done.
Turnkey. The contractor supplies materials and labour and delivers the finished house to an agreed specification, usually for a rate on the built-up area or a lump sum. It asks the least of your time, but it only works if the specification is precise, because anything left vague will be decided by the contractor.
Mixed arrangements are common too, such as turnkey for the structure and a separate contractor for the interiors.
Which arrangement suits you
There is no single right answer; it depends on you. Ask yourself three questions.
How much time can you give? Labour-only contracts need someone — you, a family member or a paid supervisor — on site often, managing purchases and keeping records. If you work full time, live in another city or are abroad, turnkey or item-rate is usually more realistic.
How much do you know about materials and construction? Buying materials well takes knowledge of grades, quantities and suppliers. Without it, you will be relying heavily on the contractor's advice even under a labour-only arrangement.
How much certainty do you want on cost? A turnkey contract with a tight specification gives the clearest picture upfront, while labour-only and item-rate costs depend on actual quantities and material prices as the work proceeds.
Whichever you choose, the fundamentals stay the same: a clear specification, a written contract, payments tied to progress and independent supervision. Our guide to estimating the cost of building a house explains how to build the budget your contract has to fit.
Vetting a contractor before you hire
A contractor's past work is the best evidence of their future work. Before you shortlist anyone:
- Visit houses they have built, ideally including some finished a few years ago. Look at the plaster, tiling, doors and windows, and ask about leaks and cracks.
- Talk to past clients without the contractor present. Ask whether the work finished on time and on budget, how extras were handled, and whether they would hire the same contractor again.
- Visit a site they are working on now. Is it tidy and organised? Are materials stored properly? Is there a supervisor present?
- Ask how many sites they run at once, and who will be on your site day to day.
- Check that they are comfortable working from an architect's drawings and a structural engineer's design, with an independent supervisor checking their work.
- Ask for a detailed, itemised quote for your specification, and notice whether they explain it readily.
- Note their full business details and, where relevant, their tax registration, so you know exactly who you are contracting with.
Meet at least three contractors. The conversations themselves will teach you a great deal about what good looks like.
What the written contract must specify
Never build on a handshake. A written contract, signed by both sides on every page, protects you and a good contractor alike. At a minimum it should set out:
- Scope, with reference to the sanctioned plan, the architect's drawings and the structural design
- Specifications and brands for cement, steel, blocks or bricks, waterproofing, tiles, sanitaryware, wiring and fittings, doors and windows, and paint, with what counts as an acceptable equivalent
- Price and payment schedule, with each payment tied to a completed stage such as foundation, plinth, each slab, plastering and handover, not to dates
- Timeline, with a start date, milestones and a completion date
- Penalties for delay, and what counts as a valid reason for an extension
- Changes and extras, priced and approved in writing before the work is done
- Quality and testing, including who pays for material tests
- Site responsibilities for water and power during construction, safety, labour and debris removal
- Warranties on workmanship and waterproofing, a period after handover in which the contractor must fix defects, and whether part of the final payment is held back until then
- Termination and disputes, covering how either side can end the contract and how disagreements will be settled
Have a lawyer review the contract before you sign it.
Supervision: an engineer or architect on your side
Even a good contractor benefits from being checked, and a poor one needs it. An independent engineer or architect who works for you, not for the contractor, is one of the most useful things you can spend money on when building a house.
Their job is to make sure the house is built as designed. That means checking the marking-out against the sanctioned plan, inspecting the reinforcement steel before every concrete pour, confirming that materials match the specification, verifying measurements on item-rate contracts, and certifying each stage before you release the payment for it. The structural engineer who designed the frame should be consulted whenever anything on site differs from the drawings.
For your part, keep a site diary with dates, decisions and photographs, especially of anything that will be hidden later: foundations, reinforcement, pipes and wiring before they are covered. Keep all instructions to the contractor in writing, even if only by message.
Our guide to the stages of house construction explains what to inspect at each step, so you know what your supervisor should be looking at.
Red flags to watch for
Walk away, or at least slow down, if you notice any of these:
- A quote far below the others, with no clear explanation of how
- A request for a large advance before any work begins
- Reluctance to sign a detailed contract, or a specification full of words like "standard" and "good quality" without brands or grades
- Reluctance to let you visit past projects or speak to past clients
- Suggestions to build beyond the sanctioned plan, or to skip approvals "to save time"
- Cash-only payments without receipts
- No site engineer or supervisor, or a different set of workers every week
- Pressure to decide quickly
- Resistance to independent supervision or to material tests
Building beyond the sanctioned plan deserves special mention, because the consequences fall on you as the owner, not on the contractor. Penalties, difficulty getting a completion certificate and trouble at resale can all follow. Our guide to building plan approval explains why deviations matter and what to do if you want to change the design.
Staying on good terms through to handover
Most disputes start with a misunderstanding rather than bad faith. Hold short site meetings at each stage, agree changes in writing before the work is done, pay promptly when a stage is certified, and raise concerns early and calmly. A contractor who is treated fairly and paid on time is more likely to go the extra mile for you.
At handover, walk through the house with your supervisor and make a written list of defects to be fixed. Collect the drawings, warranties, test reports and bills, and hold back any amount the contract allows until the defects are sorted.
If you are still looking for the right plot to build on, or need help with its documents, Siddaganga Real Estate has worked with families in Mysuru for over twelve years on MUDA-approved plots, independent houses and villas, along with document verification, e-Khata, registration and home-loan assistance. You are welcome to contact our JP Nagar office for a straightforward conversation about your plans.
Frequently asked questions
- What is the difference between a turnkey contract and a labour contract?
- In a labour-only contract you buy the materials and the contractor supplies the workers, which gives you more control but needs your time and knowledge. In a turnkey contract the contractor supplies materials and labour and hands over the finished house to an agreed specification, which is easier for you but only as good as the specification you write.
- How should I pay a house contractor?
- Tie each payment to a completed stage of work — such as foundation, plinth, each slab, plastering and handover — certified by your engineer or architect, rather than to dates. Avoid large advances, pay by bank transfer, get a receipt for every payment, and, if your contract allows, keep part of the final payment back until defects are fixed.
- Do I need an architect if I already have a contractor?
- In most cases, yes. Building plans submitted for approval generally need to be prepared by a qualified professional, and a structural engineer should design the frame. Beyond that, an architect or engineer who supervises on your behalf checks that the contractor builds to the drawings and specification, which protects the quality of the house.
- What should a house construction contract include?
- At a minimum: the scope, linked to the sanctioned plan and drawings; specifications and brands; a payment schedule tied to stages; a timeline with penalties for delay; how changes are priced; warranties and a defect-fixing period; responsibilities on site; and how disputes and termination are handled. Have a lawyer review it before you sign.
- How can I check a contractor's quality of work?
- Visit houses they have built, including some finished a few years ago, and look closely at the plaster, tiling, doors, windows and any signs of leaks or cracks. Talk to past clients without the contractor present, and visit a site they are working on now to see how organised it is.
This guide is general information, not legal, tax or financial advice. Rules, rates and procedures change — confirm the current position with a property lawyer, chartered accountant or the relevant authority before you act.


