How do I check if a builder is reliable?

Visit at least two houses they finished recently and one site under construction, speak to those owners without the builder present, and check how long they have worked in your area. A reliable builder is happy to show past work and give references.

Is RERA registration needed to build my own house?

No. RERA covers real estate projects sold to buyers, such as apartments, villas and plotted layouts above a set size. If a contractor is building a house on your own land, RERA does not apply, so your written contract is your main protection. If you are buying a flat or villa in a project, check its RERA registration on the state RERA website.

How should I pay a house builder?

In stages tied to completed work, such as foundation, roof slab, brickwork, flooring and finishing, never by month or in a lump sum. Keep a small advance at signing and hold back about 5% until the defect period after handover is over.

What should a house construction contract include?

The approved drawings, a full specification with material brands and grades, the total price and what it excludes, the stage-wise payment schedule, start and completion dates, the rate for extra work, penalty for delay, warranty and defect period, and how disputes will be settled.

What warranty should a builder give?

Ask for a written warranty on structural defects, waterproofing and workmanship, and for a defect period of at least 6 to 12 months during which leaks, cracks and fittings are fixed free. For projects under RERA, the law makes the promoter fix structural defects reported within five years of possession.

What are the red flags when choosing a builder?

A rate far below everyone else's, pressure to pay a large advance, no written specification, refusal to let you visit past sites or meet past clients, payment demanded by month instead of by stage, and vague answers about who will supervise the site.

How to Choose a House Builder in India (2026): 10 Questions to Ask, Payment Schedule, Contract Checklist and Red Flags

Choosing the builder is the biggest decision in building a house, bigger than the plan or the tiles. A good builder makes an average budget work; a bad one can drain a big one. Ask these ten questions, check the answers yourself, and put everything in writing.

Quick answer

See their work, don't just hear about it: visit finished houses and a running site, and talk to past owners alone.
Get it in writing: a detailed specification with brands and grades, a fixed price with exclusions listed, and a rate for extra work.
Pay by stage, not by month: release money only after each stage is complete, and hold back about 5% until the defect period ends.
Know who is on site: ask who supervises daily, and what happens when rain or material delays hit.

Most homeowners spend weeks choosing tiles and paint colours, and an afternoon choosing the builder. It should be the other way round. The builder decides the quality of everything you can't see later: the foundation, the steel, the concrete, the waterproofing and the wiring. These ten questions help you choose carefully, whether you are hiring a small local contractor or a larger construction company.

If you haven't yet decided between a labour-only and a full material contract, read labour contract vs material contract first. These questions apply to both.

The 10 questions to ask

1. Can I see houses you have built in my budget?

Ask for two or three houses finished in the last few years, similar in size and budget to yours, and one site under construction. A finished house shows the finish; a running site shows how they actually work: stacked materials, curing, safety, cleanliness. Photos on a phone are not enough.

2. How long have you worked in this area, and who handles approvals?

A builder who has worked locally for years knows the soil, the local labour, material suppliers and the approval process at the panchayat or municipality. Ask who will prepare the drawings and file the building approval, and whether that cost is included. In Tamil Nadu, many small houses can now get approval online through self-certification; other states have their own online systems. Either way, don't start work before the approval is in hand.

3. How many projects are you running now?

Too few can mean little work coming in; too many can mean your site is left waiting. Ask how many sites they are running, how many supervisors they have, and whether any past project stopped halfway. Projects stopping midway is the clearest warning sign of money trouble: your advance may be paying for someone else's site.

4. Can you give a detailed, stage-wise cost breakdown?

A single figure like "₹2,000 per sq ft, all inclusive" hides too much. Ask for an estimate broken down by stage and item, and a written list of what is not included: compound wall, sump, borewell, electricity connection, approval fees and interior work are common surprises. Compare builders on the same specification, not just the rate per sq ft. For typical figures, see the 1,000 sq ft construction cost breakdown.

5. Which materials, brands and grades will you use?

Get the specification in writing, item by item: cement brand and grade, steel brand and grade (for example Fe 500 or Fe 550D), concrete mix, brick or block type, wiring and switch brands, plumbing pipes, tiles and paint. Also ask how they check quality at site: cube tests for concrete, curing days, checking steel bars before casting.

6. Is the project RERA-registered, and is the land title clear?

This depends on what you are buying:

Buying a flat, villa or plot in a project: larger projects must be registered with the state RERA. Check the registration number yourself on your state's RERA website, along with the approved plan and project details. Don't rely on the brochure.
Building on your own land: RERA does not apply to a contractor building your house. Here, make sure your own land documents and approval are in order before work starts, and treat the contract as your main protection.

7. Who will supervise the site every day, and how do you handle delays?

Ask for the name of the engineer or supervisor responsible for your site and how often they will be there. Get a written schedule with start and finish dates for each stage. Ask how they handle monsoon delays and material shortages, and whether the contract includes a penalty for delay caused by the builder.

8. How do you charge for changes and extra work?

Changes happen: an extra window, a different tile, a problem found while digging. Agree in advance that every change is written down with its cost and approved by you before work starts, and fix the rates for common extras in the contract. Unclear extra charges are the most common cause of disputes at the end.

9. What warranty and after-handover support do you give?

Ask for a written warranty covering structural defects, waterproofing and workmanship, and a defect period of at least 6 to 12 months in which leaks, cracks and faulty fittings are fixed free. Holding back about 5% of the payment until that period ends gives the builder a reason to come back. For RERA-registered projects, the law makes the promoter fix structural defects reported within five years of possession.

10. Can I talk to your past customers?

Ask for the phone numbers of three recent clients and call them yourself, without the builder present. Ask:

Was the house finished on time and within the quoted price?
How were extra charges handled?
Did the builder answer calls and fix problems quickly?
Have any cracks or leaks appeared since, and did the builder come back?
Would you hire them again?

How to pay the builder

The chart near the top shows a sample stage-wise schedule for a ₹30 lakh contract. Your stages may differ, but the principles stay the same:

Small advance: around 10% at signing, not 25–30%.
Pay for finished work: each payment only after you or your engineer have checked that stage.
Never pay by month: monthly payments let money run ahead of work.
Keep records: pay by bank transfer or cheque and get a receipt for every payment.
Hold back a retention: about 5% until the defect period ends.

Red flags to walk away from

A rate far below every other quote. The difference usually comes back as poor materials or extra charges.
Pressure to pay a big advance quickly "to lock the price".
No written specification, or "don't worry, we'll use good brands".
Refusal to let you visit past sites or meet past clients.
Vague answers about who will supervise your site.
Asking you to start before the approval is received.

What the contract should include

Item	Why it matters
Approved drawings and plan	Fixes exactly what will be built
Specification with brands and grades	Stops cheaper substitutes
Total price and exclusions	Prevents surprise bills
Stage-wise payment schedule	Keeps payment behind progress
Start date, finish date, delay penalty	Gives the timeline weight
Rates for extra work and changes	Avoids end-of-project disputes
Warranty and defect period	Gets problems fixed after handover
Dispute resolution	Sets a fair way to settle disagreements

Final word

A good builder is proven by finished houses, satisfied past clients, a clear written specification and a payment plan that follows the work. Take your time with these ten questions, check the answers yourself, and sign only when everything you were promised is on paper. The few days this takes can save years of cracks, leaks and arguments.

This article is general guidance. Building rules, approval limits and RERA rules vary by state and change over time. Check the current rules with your local body and take legal advice on large contracts.