How to Read an Interiors BOQ (and Catch Hidden Costs Before You Sign)

A BOQ — Bill of Quantities — is an itemised schedule that lists every element of your home interiors with its material specification, dimensions, unit of measurement, rate and quantity, so the total is the sum of checkable parts rather than one unexplainable number. That is the whole BOQ interior design meaning in one line: a quote you can audit.

A proper line reads something like: 'Master bedroom wardrobe, 7 ft x 8 ft, 18 mm BWR plywood carcass (IS 303), laminate-finish shutters, soft-close hinges — 56 sqft @ rate'. Every claim in that line is verifiable on site with a measuring tape.

Why it matters: an itemised BOQ is what keeps the final bill close to the first one. It is the reason a well-run studio can commit to numbers upfront — at AesthetiX we hold 95% quote accuracy precisely because every line is specified before work begins. A vague quote cannot make that promise, because vagueness is where the escalation lives.

Every modular furniture line should carry three separate specifications — carcass (the box), shutter (the face) and hardware (the moving parts) — because each is priced, and compromised, independently. If your quote shows one merged rate, you cannot tell where a cut has been made.

Carcass: look for material and thickness — 18 mm BWR plywood (IS 303), or BWP/marine grade (IS 710) for wet areas, with a back panel of at least 6 mm. Shutter: the finish drives most of the visible cost; in Bengaluru, wardrobe shutters typically run ₹800–2,200 per sqft excluding 18% GST as you move from laminate up to acrylic or PU. Hardware: insist on the brand, model and load rating in writing — soft-close hinges rated for 50,000+ open-close cycles, drawer channels rated for 30–35 kg.

The test is simple: if you could mentally swap any one of the three and the rate line would not need to change, the line is under-specified.

A lump sum hides substitutions: it lets the vendor decide after you have signed what the word 'wardrobe' actually means. The classic downgrades are invisible in a total but obvious in a line item — 16 mm carcass sides where you assumed 18 mm, a 3.5 mm back panel instead of 6 mm, 0.8 mm edge banding instead of 2 mm, unbranded hinges hiding under the phrase 'imported hardware'.

The other big hide is measurement method. Some quotes price a wardrobe on shutter (front) area; others count every panel's surface area, which can inflate the billable square footage by 2.5–3x for the same physical unit. Both methods can be legitimate — but only if the method is written down and the rate reflects it.

Finally, watch the phrase 'as per design'. If the design is not frozen and attached, it means 'as per whatever we can build at this price'. A BOQ should reference specific, signed drawings — otherwise the quote and the outcome are two different products.

Six items are routinely excluded from interior quotations in Bangalore, and they are where most hidden costs in home interiors live: civil work, appliances, fixtures, lofts, GST and cartage.

Civil work — breaking, tiling, plumbing or electrical re-routing — is usually quoted only after site inspection, and adds meaningfully if you are moving a kitchen sink or adding wall points. Appliances (hob, chimney, oven) are almost never in the modular kitchen price: a '₹4L kitchen' is cabinets, not the machines inside it. Fixtures — light fittings, sanitary ware, mirrors — are typically 'provision only': the wiring point is included, the fitting is not.

Lofts are the quiet one: many wardrobe rates cover the main unit only, with lofts billed separately at a similar per-sqft rate. GST adds 18% (9% CGST + 9% SGST) on top of any ex-tax figure — always ask which side of the tax your number sits on. And cartage — transport, floor-lifting, society entry charges — is small but real. Get all six in writing: included, excluded or priced.

Ask five questions of every line, and hidden costs surface before you sign rather than after: What exact material and grade, with the IS standard (IS 303 for interior-grade plywood, IS 710 for boiling waterproof)? Which brand and model of hardware — in writing, not 'branded'? How is the area measured — front area or total panel area? What finish and what thickness — for the shutter, the edge banding and the back panel? And what warranty covers this specific line?

Then ask two questions of the document as a whole. First: 'What is NOT in this quote?' — a good studio answers with a written exclusions list, not reassurance. Second: 'What happens if the final bill exceeds this?' — the answer tells you whether the BOQ is a commitment or an opening bid.

None of these questions is rude. A studio that has done its engineering answers them in minutes; a studio that has not will call you difficult. That reaction is itself useful information.

Never compare totals — compare normalised lines. Put both quotations side by side, match the scope item for item, and reduce everything to per-sqft or per-unit rates on identical specifications, all excluding GST. In Bengaluru, full 2BHK interiors typically land between ₹8–22L and 3BHKs between ₹12–30L excluding 18% GST; a quote far below the band for your specification level is usually excluding quietly, not pricing brilliantly.

Three checks separate a real quotation from a teaser. One: does every line carry material, grade, measurement method and rate — or do 'lump sum' lines cluster exactly where the money is? Two: is the exclusions list written, or verbal? Three: does the studio put consequences behind its numbers — for instance, we pay clients ₹2,000 per day if handover slips past the committed date, a promise that is only rational when the BOQ underneath is genuinely itemised.

The cheapest quote and the most honest quote are rarely the same document. Choose the one you can audit.