A building contractor controls a large part of your project’s cost, quality, schedule and day-to-day experience. Before signing an agreement, ask every shortlisted Chennai contractor the same questions—and request documents or examples that support their answers.
Before interviewing contractors
Prepare a common project brief so every contractor prices the same requirement. Include the plot location and dimensions, proposed built-up area, number of floors, room requirements, preferred finish level, available drawings, target start date and approximate budget. Without a common brief, quotations cannot be compared fairly.
15 essential questions to ask
Have you completed projects similar to mine?
Experience should match the building type, scale, soil conditions and finish level—not merely the broad category of “construction.” Ask to see recent individual houses, villas or commercial projects comparable to yours.
Look for: project photographs, locations, approximate areas, scope handled and permission to visit at least one completed or active site.
Can I speak with recent clients?
Online reviews are useful, but direct references provide deeper information. Ask former clients about communication, changes, workmanship, budget control, completion delays and response after handover.
Look for: two or three recent, relevant and independently contactable references—not only old testimonials.
What business and project documents can you provide?
Request the contractor’s registered business name, office address, tax details where applicable, authorized signatory information and written proposal. Requirements differ by business structure and project, so independently verify documents relevant to your contract.
Look for: consistent business details across the quotation, agreement, invoice, website and bank account.
Who will design and approve the structural system?
Architecture and structural engineering are different responsibilities. Confirm who prepares the structural drawings, how soil and site conditions are considered, and whether construction will follow issued drawings rather than site assumptions.
Look for: named design responsibility, drawing issue process and a clear method for recording revisions.
Is soil testing required for my plot?
Foundation requirements can change with soil type, filled ground, groundwater and structural load. Ask how the contractor and structural professional determine whether a geotechnical investigation is appropriate.
Look for: a site-specific answer. Be cautious when foundation decisions are made only from a standard package.
What exactly is included in the quotation?
Ask for the built-up area definition, scope by trade, material specifications, quantity or allowance limits, labour, equipment, transport, taxes and contractor overheads. The quote should also list every exclusion clearly.
Look for: a bill of quantities or detailed scope—not a single rate with broad marketing descriptions.
Which brands and specifications will be used?
“Standard,” “branded” and “premium” are not measurable specifications. Request brand, grade, model, size, thickness or monetary allowance for steel, cement, blocks, waterproofing, pipes, wires, switches, tiles, windows, doors, paint and sanitary fittings.
Look for: approved-equal substitution rules and written client approval before a specified product is changed.
Who is responsible for plans and approvals?
Clarify who prepares drawings, submits documents, follows up and pays statutory or professional fees. The applicable authority and documentation depend on the plot location and proposal; do not rely on a vague promise that “approval is included.”
Look for: a responsibility matrix separating contractor work, consultant work, owner documents and government charges.
Who will supervise my site, and how often?
Ask whether your contact is a salesperson, coordinator, engineer or site supervisor. Understand how many sites that person handles, how often they visit, who checks critical stages and how instructions are documented.
Look for: named responsibility, inspection records, progress reporting and a clear escalation contact.
What is the realistic project schedule?
A programme should account for design decisions, approvals, procurement, curing time, weather, specialist work and client selections. Ask for major milestones rather than only a promised completion date.
Look for: a baseline schedule, dependencies, update frequency and a written process for approved extensions of time.
How are payments connected to progress?
Payments should correspond to clearly defined and verifiable work milestones. Ask how mobilization, material advances, stage bills, retention or final payment will work for your project.
Look for: measurable milestones, invoices or receipts and sufficient owner visibility before each payment.
How will changes and extra work be priced?
Changes are common, but verbal instructions create disputes. Ask for a written variation process stating the revised price, time impact and approval required before extra work begins.
Look for: unit rates where possible, written change orders and no unapproved substitutions or extras.
How do you manage quality, safety and site materials?
Ask about stage inspections, concrete and waterproofing checks, material storage, housekeeping, worker safety, third-party labour and applicable insurance arrangements. Responsibility should be recorded in the agreement.
Look for: project-specific quality checks, safe working practices, protected material storage and documented issue closure.
What happens if the project is delayed?
Understand how contractor delay, owner delay, approval delay, weather, material shortage and force majeure are distinguished. The agreement should define notice, revised schedules and remedies.
Look for: balanced clauses reviewed by a qualified legal professional—not an unrealistic verbal guarantee.
What support is provided after handover?
Ask about the final inspection, snag-list closure, keys, drawings, product warranties, manuals, invoices and the process for reporting defects after occupancy.
Look for: written warranty or defect-liability terms stating coverage, exclusions, reporting method and response responsibility.
Contractor comparison scorecard
Score each contractor from 1 to 5 using evidence—not presentation quality. Add notes and compare the total only after reviewing all high-risk items.
| Evaluation area | What to verify | Score |
|---|---|---|
| Relevant experience | Similar completed and current projects | /5 |
| Client references | Recent contactable clients and site visit | /5 |
| Design capability | Architecture, structural responsibility and drawings | /5 |
| Quotation clarity | Scope, quantities, specifications and exclusions | /5 |
| Site supervision | Named team, visit frequency and reporting | /5 |
| Quality and safety | Checks, records, storage and worker practices | /5 |
| Schedule | Milestones, dependencies and delay procedure | /5 |
| Payments | Progress-linked milestones and documentation | /5 |
| Contract terms | Variations, responsibilities and dispute process | /5 |
| After-handover support | Snag closure, records and written warranty | /5 |
Warning signs before signing
Documents to review before work begins
Legal note: This article is a general homeowner checklist, not legal, engineering or regulatory advice. Have the final agreement, title documents, approvals and professional responsibilities reviewed by qualified specialists appropriate to your project.
Frequently asked questions
Should I select the lowest construction quotation?
Not automatically. First normalize all quotations using the same drawings, built-up area, materials, taxes, scope and exclusions. The lowest visible rate may not represent the lowest completed-project cost.
How many quotations should I collect?
At least three detailed quotations can provide a useful comparison, provided every contractor prices the same documents and requirements.
Can construction start before the design is finalized?
Beginning without coordinated architectural and structural information can lead to changes, waste and disputes. Confirm the drawings and responsibilities required for the planned stage before commencing work.
What should be written in the construction agreement?
Record scope, drawings, specifications, price, taxes, timeline, payments, responsibilities, variations, delays, termination, dispute process, warranties and handover requirements. Obtain legal review before signing.
How can I verify workmanship?
Review completed projects, visit an active site with permission, understand stage inspections, and appoint an independent professional if you require additional verification.
Planning a construction project in Chennai?
Discuss your plot, design requirements, expected built-up area and preferred finish with the An-Nur team.
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