The lowest quotation is not automatically the lowest final cost. A contractor can appear cheaper because the scope is smaller, allowances are unrealistic, key work is excluded or the quotation leaves change pricing undefined. Start by making the offers comparable.
A capable contractor should be able to explain who will run the site, how drawings and quantities are controlled, how quality is checked, how changes are approved, how progress is evidenced and how the home is handed over.
Give every bidder the same information
Comparing one contractor’s lump sum with another contractor’s per-square-foot rate is not a tender comparison. Issue the same drawing set, BOQ, specifications, commercial conditions and response format to each bidder. Ask bidders to list qualifications and exclusions rather than burying them in a total.
If the design is not developed enough for a firm price, say so. Use a documented pre-construction stage to complete surveys, coordination, quantities and specifications before asking anyone to carry undefined risk.
Check evidence, not only claims
- Ask for projects similar in scale, construction type and finish—not only the largest or most photogenic job.
- With owner permission, speak to recent clients about communication, changes, delay, defects and final account closure.
- Visit an active site where practical and observe housekeeping, material storage, drawing access and supervision.
- Review sample BOQs, programmes, quality checklists, progress reports and handover records with confidential details removed.
- Confirm the business identity, address, invoicing arrangement and person authorised to sign the contract.
- Ask who actually becomes your site contact after the contract is won.
Compare the operating model
| Question | Strong evidence | Warning sign |
|---|---|---|
| Who supervises daily work? | Named role, visit rhythm, escalation route and sample daily record | “Our team will manage it” with no accountable person |
| Which drawings govern? | Revision register and process for site queries | Instructions mainly passed through calls or memory |
| How is quality released? | Stage hold points, responsible reviewer and close-out evidence | Checks occur only after the homeowner complains |
| How are changes priced? | Written request, quantity/rate basis, time impact and approval before work | Changes settled verbally at the end |
| How are payments earned? | Milestones linked to measurable work and supporting records | Large advances unrelated to procurement or verified progress |
| How is handover managed? | Snag list, tests, warranties, drawings, manuals and final-account process | Handover means only giving the keys |
Read the quotation from the exclusions upward
Before comparing totals, identify differences in taxes, transport, lifting, water, electricity, testing, design, approvals, temporary works, external development, utility connections, fixtures, equipment and debris removal. Check whether finish selections use real specifications or low allowances that will almost certainly become upgrades.
Arithmetic also matters. Verify quantities, units, rates, extensions and the relationship between the quotation and payment schedule. A clean-looking total can still contain duplicate items or missing scope.
Put the project controls in the contract
A residential contract should be reviewed for the specific project and applicable law. At minimum, the commercial conversation should clearly address:
- the signed drawing, BOQ and specification documents and their order of precedence;
- start conditions, programme, access responsibilities and extension-of-time process;
- payment measurement, invoices, retention or other agreed security and final account;
- material approvals, substitutions, tests, inspections and responsibility for rejected work;
- written variation procedure covering cost and time before changed work proceeds;
- site safety, insurance, statutory responsibilities and protection of adjacent property;
- defect reporting, correction, warranties, handover documents and dispute process;
- termination and suspension rights appropriate to both parties.
Interview the team with a real scenario
Instead of asking “Will you finish on time?”, use situations. Ask what happens if a bathroom layout changes after plumbing procurement, a drawing conflict appears before a pour, rain stops excavation, a tile is unavailable or an inspection finds non-conforming work. The answer reveals whether the contractor relies on a repeatable process or personal assurances.
Do not treat private homes as showrooms. Obtain permission, avoid publishing client details and ask focused questions. A genuine reference is useful because it explains how the contractor behaved when the project became difficult—not because every build was problem-free.
A simple selection scorecard
Score each bidder against the same weighted criteria: scope completeness, team and capacity, comparable project evidence, programme, quality system, safety approach, commercial clarity, change control, communication and price. Record the reason for each score. This keeps one persuasive meeting or one low number from replacing the whole evaluation.
Compare a defined scope.
Start with coordinated design, specifications and a transparent BOQ for your Dehradun home.
This article is general educational information, not legal, financial, safety or professional contracting advice. Obtain project-specific review from appropriately qualified professionals before signing or administering a construction contract.