Most homeowners read an interior design contract exactly once — the day they sign it. After that, it sits in a WhatsApp chat or a Gmail folder, forgotten, until something goes wrong. And that’s usually the moment they realize the contract they signed was written to protect the designer, not them.
This isn’t about distrust. Most designers are honest, and most projects go fine. But “most” isn’t “all,” and a contract is the one document that decides what happens when things don’t go fine — a delayed handover, a cost overrun, a material swap you never approved. If the contract doesn’t cover it, you have no leverage. You just have a WhatsApp argument.
Here are the clauses that actually matter, and what to look for in each one.
Scope of Work — the most important clause you’ll skim past
This is where most disputes start. A vague scope of work like “complete interior work for 3BHK” tells you nothing. What’s included? False ceiling? Electrical rework? Painting? Curtains? A proper scope of work lists every room, every deliverable, and explicitly states what’s excluded. If civil work, plumbing changes, or AC ducting aren’t part of the package, the contract should say so in writing — not get clarified verbally after work has started.
Payment Schedule — tied to milestones, not to dates
A payment schedule that says “30% advance, 30% after 30 days, 40% on completion” is a trap. Time-based payments mean you’re paying regardless of whether work has actually progressed. A milestone-based schedule — 30% on order confirmation, 30% on material delivery, 30% after carpentry and electrical are done, 10% on final handover — ties your money to visible progress. If a designer resists milestone-based payments, that itself is worth noting.
Timeline and Delay Penalty
Every contract should state a start date, an end date, and what happens if that end date is missed. Without a delay clause, “we’re running a bit late” can stretch from two weeks to two months with zero consequence for the designer. A fair clause includes a grace period, followed by a small daily or weekly penalty — not to be punitive, but to keep timelines honest.
Material Specification — brand, not just category
“Laminate for wardrobes” isn’t a specification. “Merino or Century laminate, 1mm thickness” is. Vague material clauses are how quotations get padded on paper and cut on-site. Insist that every major material — plywood grade, laminate brand, hardware brand, paint brand — is named specifically in the contract or an attached annexure, with the quoted price against it.
Change Order Process
Design projects evolve — you’ll want to add a study unit or swap a wardrobe finish partway through. That’s normal. What’s not normal is a designer absorbing those changes into the “final bill” without documenting them. Every contract should specify that any change beyond the original scope needs written approval and a revised cost, before the work happens — not after the invoice arrives.
Warranty and Defect Liability
Ask what’s covered after handover, and for how long. Hardware, plywood, and modular units typically carry manufacturer warranties, but workmanship — hinges sagging, laminate peeling, shutters misaligning — needs a separate defect liability clause from the designer, usually 6 to 12 months. Without this in writing, “please fix this” six months post-handover becomes a favor, not an obligation.
Termination Clause
If things go badly enough that you need to exit the contract, what happens to the advance you’ve paid and the work already done? A fair termination clause defines how unfinished work is valued and refunded, and under what conditions either party can walk away. Contracts with no exit clause are the ones that trap homeowners in bad projects the longest.
Why this matters more at possession stage
If you’ve just gotten your keys, you’re moving fast — comparing designers, locking budgets, wanting to start immediately. That urgency is exactly when contract clauses get skimmed. This is one of the reasons Infrabob has designers work off a standardized contract structure, so homeowners aren’t decoding a new format every time they compare quotes. It’s a small thing, but it removes one more place where confusion — and cost — can quietly creep in.
None of this requires a lawyer or a fight with your designer. It just requires reading five sections closely before you sign, and asking for anything vague to be made specific. A good designer won’t mind. A good contract makes sure you never have to find out the hard way whether yours is one.
Want a checklist version of this to carry into your next designer meeting? WhatsApp us “CONTRACT” and we’ll send it over — free, no strings attached.