Every contractor conversation starts with one number: the per-square-foot rate. What that number contains is where the game lives. 'Thekedari' or labour-rate contracts — where you buy every bag and brick yourself and the contractor brings only labour — have been running a few hundred rupees per square foot for grey structure. 'With material' turnkey rates bundle everything and ran roughly Rs 6,700 to 8,800 per square foot for a standard complete build this year. Neither is cheaper by nature; they move the risk to different shoulders.
What the flat rate hides
A per-square-foot quote is an average over your whole covered area — but your house is not average everywhere. Bathrooms and kitchens cost multiples of a bedroom's rate; a basement costs more than a bedroom floor; a cantilevered front adds steel the flat rate never mentioned. Ask for the quote itemized by cost head — excavation, structure, roofing, plaster, electrical, plumbing, finishes — with quantities. A contractor who won't itemize is telling you something.
The five leaks
One: 'rates valid 15 days' — cement and steel reprice, and escalation clauses bite mid-slab. Two: the covered-area definition quietly includes the porch, mumty and parapets at full rate. Three: provisional sums for kitchen and bathrooms priced at economy, spent at premium. Four: 'client will provide' lines — bore, meter, approvals — that were always going to be your cost but never made the comparison sheet. Five: change orders priced after demolition, when your negotiating power is zero.
The defence is boring and effective: a written bill of quantities, staged payments tied to milestones (plinth, each slab, plaster, finishes), material brands named in the agreement, and your own running estimate to compare against. That last one is what this tool is for — every line shows its quantity, rate and math, so a quote has something honest to stand next to.