What ₹15 lakh really buys in a 3BHK interior — a line-by-line breakdown

Interior quotes get compared as single numbers, which is exactly how people end up disappointed. Here is a real 1,050 sq.ft three-bedroom project, broken into the lines that made up the final bill — including the four items clients consistently under-budget.

The project

A 1,050 sq.ft carpet-area 3BHK in a nine-year-old building. Occupied family of four, moving out for six weeks. Signature package. Final BOQ value: ₹15.2 lakh including 18% GST. Handover in nine weeks.

Where the money went

The four line items clients always underestimate

1. Electrical — ₹1.54 lakh, not ₹40,000

A nine-year-old flat had 2.5 sq.mm wiring on lighting circuits and no dedicated point for the AC in the second bedroom. Adding 26 points, two dedicated circuits and the fittings themselves is not a small job, and it is buried inside walls you are about to close permanently. This is the worst possible place to save money.

2. Waterproofing and civil correction — ₹88,000

There was seepage on the shared bathroom wall. Painting over it would have cost ₹4,000 and reappeared in eleven months, behind a new wardrobe. Fixing it at source cost ₹31,000 of the civil line. That is the whole argument for engineering-led interiors in one number.

3. Loose furniture and soft furnishing — ₹82,000

Almost every quote in the market excludes the sofa, the dining set, the mattresses, the curtains and the rugs. They are real costs, they arrive at the end, and they land exactly when the budget is emptiest. Budget 5–8% of project value for them from day one.

4. Site expenses and debris — ₹42,000

Hoisting charges, society deposits, debris removal, water and power, protective sheeting, and the inevitable extra trips. Small individually, ₹42,000 together.

What we cut, and what we refused to cut

Cut: the wall panelling in the living room (₹1.1 lakh saved — replaced with paint and a picture rail), imported hardware in two bedrooms, and the dining-area false ceiling.

Refused to cut: BWP ply under the sink, soft-close hardware in the kitchen, waterproofing, and the electrical rewiring. Each of these fails expensively and invisibly; each of them is behind something you would have to demolish to reach.

How to use this

Take your own carpet area and run it through the DOTT cost estimator. Select only the scope you actually want, and the tool will show you the same category split you see above. Then compare any quote you receive line by line rather than total by total. If a quote doesn't have lines, it isn't a quote — it's a guess.