How to check if your interior designer is overcharging you

Most people renovate their home once, maybe twice in a lifetime. Their designer or contractor does this every week. That gap in experience is completely normal. These six checks help close it.

A 25-page interior design quote looks thorough. It has categories, line items, quantities, rates. The problem is not the length. The problem is that most homeowners don't have a reference point for what fair looks like in any of those categories.

Your designer is not necessarily trying to take advantage of you. But without any benchmarks on your side, there's no way to know whether a kitchen quoted at ₹8 lakhs is well-priced, aggressive, or simply what your city and scope commands. The same goes for wardrobes, false ceiling, electrical, and every other line.

These six checks don't require any technical background. They take about 90 minutes on a typical 3BHK quote and will tell you which numbers to ask about before you sign.

1. Does every line item have a complete specification?

The most useful thing you can do before looking at a single rupee is check whether you actually know what you're buying.

A properly written line item has four parts: material name, grade or brand, unit of measurement, and rate. "18mm BWP plywood wardrobe carcass, Greenply Gold, per running foot, ₹2,200" has all four. "18mm plywood wardrobe" has one.

The reason this matters: if your contract says "18mm plywood" without specifying grade, and the carpenter installs commercial-grade ply instead of BWP marine ply, the contract was technically honoured. You have no basis to object. The same applies to laminate brands, hardware brands, plywood grades throughout.

Read our full guide to every material term in a modular kitchen or wardrobe quote if any of these abbreviations are new to you. BWP, BWR, HDHMR, MDF, membrane, PU: each means something specific and each belongs in different places.

2. Are the rates within a reasonable range for your city?

You don't need to check every number. The modular kitchen, wardrobes, and electrical together account for roughly 75% of most interior budgets. If those look right, the rest usually does too.

One important context before the benchmarks: independent contractors price 30 to 50% below branded platform rates as a matter of course. A Livspace or Homelane quote will always be higher than a local contractor quote for the same physical work. The premium covers project management, warranty, and accountability. Neither is wrong. But comparing them directly without knowing which type you're dealing with leads to confusion.

Item	Branded player (2026, metro)	Independent contractor
Modular kitchen laminate shutter	₹350 to ₹520 per sq ft	₹220 to ₹420 per sq ft
Wardrobe (laminate finish)	₹3,200 to ₹4,200 per running ft	₹1,800 to ₹2,800 per running ft
Gypsum false ceiling (flat)	₹150 to ₹220 per sq ft	₹60 to ₹150 per sq ft
Electrical (complete home)	₹217 to ₹298 per sq ft	₹450 to ₹850 per point
Waterproofing (wet areas)	₹100 to ₹150 per sq ft	₹80 to ₹130 per sq ft

These are actual benchmarks from reviewed projects in Bengaluru, Mumbai, and Delhi NCR in 2026. Rates vary by city, finish level, and scope. Independent contractor rates for false ceiling in particular vary widely, from ₹60 per sq ft for basic POP flat in smaller cities to ₹220 per sq ft for gypsum with electrical channels in metros. The number in your quote is not automatically wrong if it sits outside this range, but it warrants a conversation about what exactly is included.

For a complete category-by-category breakdown with rate benchmarks for kitchens, wardrobes, TV units, bathrooms, and paint, read our guide to reading your interior quotation.

3. Is GST stated clearly?

GST on interior contractor work is 18%. On a ₹15 lakh project, that is ₹2.7 lakhs. A lot of homeowners discover this only after design sign-off, when they've already committed.

Independent contractors typically quote exclusive of GST. Branded players often quote a discounted rate, then add a handling fee calculated on the pre-discount base, then apply 18% GST on top. The final invoice number is rarely what the quote suggested.

The full arithmetic of how a branded player quote reaches its final number is laid out in our piece on why two quotes at the same price are never the same project. Worth reading before you compare any two quotes side by side.

4. What does the payment schedule actually require?

The payment schedule is often the last thing homeowners read in a quote, but it directly affects how much leverage you have if something goes wrong during execution.

Most organised interior firms structure payments so that 100% of the project value is collected before installation is complete. The typical sequence is: a booking amount, a large tranche at design sign-off, and the final balance on "ready to dispatch" from the factory. That last milestone happens before a single unit has been installed in your home.

This is not a red flag by itself. It's how the industry works. But understanding it before you sign means you know exactly where your negotiating window is and when it closes.

The specifics of how this plays out, including what "ready to dispatch" actually means and which payment stage is your most important, are covered in our piece on interior design payment schedules and what they mean for you.

5. Is waterproofing in the quote?

This is the most commonly omitted item in Indian residential interior quotations. Search your quote document for the word "waterproofing." In a meaningful number of quotes, it doesn't appear at all.

Proper chemical waterproofing of wet areas (bathrooms, kitchen sink zone, utility area) runs ₹80 to ₹150 per sq ft. A standard 2-bathroom apartment has roughly 100 to 150 sq ft of wet area. The treatment costs ₹8,000 to ₹22,000 at the time of project.

A bathroom leak discovered after possession costs ₹80,000 to ₹2.5 lakhs to fix, depending on how long it goes undetected and what's above and below the slab. The waterproofing costs 10 to 30 times less than the repair. It also needs to happen during the civil work phase. You can't add it retroactively without reopening the floors.

6. Are there any lump-sum line items?

A lump-sum line item is one where you see a total but no breakdown. "False ceiling, living room: ₹85,000." No area. No rate per sq ft. No specification of POP versus gypsum.

Lump-sum lines are not always a problem. Some items legitimately don't break down neatly. But in categories where measurement matters, a lump sum means you can't cross-check the number against your floor plan, and you can't compare it against another quote.

For any modular or civil line item above ₹20,000, ask for the measurement and rate behind the total. This takes one message to your contractor and two minutes of arithmetic on your side. If the number comes back clean, you've verified it. If it doesn't come back at all, that tells you something too.

The quick version

If you only have time for three things: make sure every modular item has a material grade and hardware brand specified. Check that GST is shown separately and you know the actual invoiceable amount. And confirm waterproofing is explicitly included with a chemical spec.

Those three catch the most common gaps. The other three checks are worth doing before you sign, but if the project starts tomorrow, start there.

A good designer or contractor will answer every question on this list without hesitation. These are standard things any professional running a legitimate project expects to be asked. The point isn't to be difficult. It's to be informed, so that if something comes up mid-project, you have documentation to refer back to.