How to Evaluate a Construction Contractor Before Signing: 15-Point B2B Checklist

Choosing a contractor is the single biggest risk decision in a construction project. Drawings can be revised and budgets can be re-planned, but once a contractor is mobilised on site, replacing them costs months and money.

Capability varies widely across the industry. McKinsey found that large-scale players in heavy construction tend to be 20-40% more productive than firms in fragmented specialised trades. Two bids at similar prices can deliver very different outcomes. This checklist helps developers, landowners and business owners separate a low price from a good contractor.

Before You Start: Define What You Are Evaluating For

• Project type and scale (built-up area, floors, basements).
• Target start date and completion date.
• Contract model (lump sum, item rate or cost-plus). See our contract types comparison.
• Your in-house capacity to supervise, which decides how much you need the contractor to self-manage.

The 15-Point Contractor Evaluation Checklist

A. Legal and Compliance (pass or fail)

1. Legal identity and tax registration. Collect PAN, GSTIN and the certificate of incorporation or LLP registration. Verify the GSTIN is active on the GST portal’s taxpayer search and check company or LLP details on the MCA portal. Red flag: GSTIN cancelled, suspended or registered under a different business name.

2. Labour and statutory compliance. Ask for EPFO and ESIC registrations, building and other construction workers (BOCW) registration where applicable, and proof of recent statutory payments. Wage and social security obligations are rising under the new labour codes, which JLL projects will lift labour costs by 5-12%. A contractor who ignores compliance is either underpricing or exposing you to liability.

3. Litigation and dispute history. Ask directly about ongoing arbitrations and court cases with clients or subcontractors. Public case information can be searched through eCourts services. One dispute is not a red flag. A pattern of disputes with clients is.

4. Insurance cover. Confirm Contractor’s All Risk (CAR) insurance, employees’ compensation cover and third-party liability cover, with sums insured suitable for your project.

B. Financial Strength

5. Audited financials for three years. Look at turnover trend, profitability and working capital. A contractor whose annual turnover is small relative to your project size may struggle to fund material purchases between bills.

6. Bank guarantee capacity and banker reference. Confirm the contractor can furnish the performance guarantee and mobilisation advance guarantee your contract needs. A letter from their bank on limits available is stronger than a verbal assurance.

C. Technical Capability

7. Similar completed projects. Ask for a list of projects completed in recent years that match yours in type, height and scale, with client contact details. Call at least two clients. Ask: Was the project on time? How were variations handled? Would you hire them again?

8. Site visits to ongoing and completed work. A live site shows housekeeping, safety, workmanship and supervision in a way no brochure can. Visit unannounced if the client allows it. See the site visit questions later in this guide.

9. Named key team. Ask for CVs of the project manager, site engineers, QA/QC engineer, MEP coordinator and safety officer who will actually run your site. Include the key names in the contract, with a clause that replacements need your approval.

10. Plant, equipment and formwork. Check what the contractor owns and what they hire. Owned formwork and equipment usually mean better control over cycle times, especially for slab work.

D. Execution Systems

11. Quality management system. Ask for a sample inspection and test plan, pour cards, checklists and the testing laboratories they use. Work should follow relevant Indian Standards published by BIS, such as IS 456 for concrete and IS 1893 and IS 13920 for earthquake-resistant design. ISO 9001 certification is a plus, but the site records matter more than the certificate.

12. Safety record and HSE plan. Ask for the site safety plan, induction process, PPE policy and incident records for recent projects. A contractor who tracks near-misses usually has fewer serious incidents.

13. Planning and reporting. Request a sample programme showing the critical path, and a sample monthly progress report. Good contractors report progress, cost and risks, not just work done. Our guide on construction project delay causes explains what a delay-proof schedule should contain.

E. Commercial Terms

14. Transparent priced BOQ and clear exclusions. A serious bid comes with a priced breakdown and a written list of assumptions and exclusions. Vague bids are expensive bids, just delayed. Compare every bid against the same scope, as explained in our cost per sq ft guide.

15. Acceptance of key contract terms and after-handover support. Check the bidder’s response to your payment milestones, price variation clause, liquidated damages, retention and defect liability period. Ask how they handle post-handover complaints and who is responsible.

Do Not Forget MEP and Specialist Subcontractors

• Ask the main contractor to name proposed specialists for HVAC, electrical, fire, facade and lifts at bid stage.
• Check each specialist’s similar projects, team and after-sales service capability.
• Confirm who is responsible for coordination between trades.
• Make specialist changes subject to your written approval.

Contractor Scoring Matrix

Criteria	Checklist points	Weight	Score (1-5)	Weighted score
Legal and compliance	1-4	Gate (pass/fail)	–	–
Financial strength	5-6	20
Relevant experience and references	7-8	25
Team and resources	9-10	20
Quality, safety and planning systems	11-13	20
Commercial clarity and terms	14-15	15
Total		100

Weighted score = (Score / 5) x Weight. Adjust the weights to your project: a fast-track project may weight planning systems higher, while a complex basement project may weight relevant experience higher.

Red Flags That Should End the Conversation

• GSTIN inactive or registered to a different entity.
• Refusal to share audited financials or client references.
• A price far below other bids with no priced breakdown.
• No named project manager or site team.
• Request for a large advance without a bank guarantee.
• Pressure to sign before drawings and scope are agreed.
• Several past clients describing the same problem.

Questions to Ask During a Site Visit

1. Can I see today’s pour card or the last concrete cube test results?
2. How is the weekly programme updated, and who attends progress meetings?
3. Where are materials tested, and how are rejected materials handled?
4. How many workers are on site today compared with the plan?
5. What was the last safety incident or near-miss, and what changed after it?
6. How are client instructions recorded and priced?

A 4-Week Evaluation Timeline

Week	Activities	Output
Week 1	Issue prequalification questionnaire and document list; collect responses	Shortlist of bidders who pass the legal gate
Week 2	Reference calls; visits to ongoing and completed sites	Experience and site visit scores
Week 3	Technical and commercial clarification meetings; review of methodology and schedule	Scores for team, systems and commercial clarity
Week 4	Final scoring, price comparison on normalised BOQ, negotiation	Recommended contractor and contract terms

Reference Call Script: 6 Questions to Ask Past Clients

1. Was the project completed on the agreed date? If not, how late, and why?
2. How were variations raised and priced? Were there disputes?
3. Did the project manager named at bid stage stay until completion?
4. What was the quality of structure and finishes at handover? How many snags?
5. Describe one problem during the project. How did the contractor respond?
6. Would you hire them again for a similar project?

Evaluate Brahmani Buildcon With This Checklist

Learn more about Brahmani Buildcon and how we compare in our guide to top construction companies in Ahmedabad.

Frequently Asked Questions

How do I verify a construction contractor in India?

Verify the GSTIN on the GST portal, check company or LLP details on the MCA portal, review three years of audited financials, call past clients and visit an ongoing site. Ask about disputes and insurance cover as well.

Should I always choose the lowest bid?

No. Compare bids only among contractors who pass your prequalification, and check that each bid covers the same scope. A bid far below the others often reflects missed scope that returns later as variations.

How many contractors should I invite to tender?

Three to five prequalified contractors usually give enough price competition without making evaluation unmanageable.

What documents should a contractor provide before signing?

Registration and tax documents, statutory compliance proof, insurance, audited financials, a list of similar projects with references, key team CVs, a quality and safety plan, a sample schedule and a priced BOQ with exclusions.

Why should key staff be named in the contract?

Because the site team determines delivery. Naming the project manager and key engineers, and requiring approval for replacements, prevents a strong team from being promised at bid stage and swapped after award.