Comparing two interior design studios usually means comparing two similar things: an attractive portfolio and a number. Neither tells you what you need to know, because the difference between a smooth project and an exhausting one is not visible in photographs. It sits in details that are either agreed before signing or left to interpretation.
Choosing a studio is not a matter of taste. Taste is what the portfolio shows. What it cannot show is what you receive, when, what the fee excludes, and who carries what when something slips. These ten questions surface that before you commit — each with what a reassuring answer sounds like, and what should stop you.
1. What exactly do I receive at the end?
Why ask: “A full design” means something different at every studio — 3D visuals and a mood board at one, a drawing set a contractor can build from at another.
Reassuring: A written, itemised list of deliverables — floor plans, ceilings, lighting, electrical, wall elevations, furniture schedule — in the contract, not mentioned in a meeting.
Worrying: “Everything you need.” In practice that means the definition of “everything” gets settled later, usually in favour of whoever drafted the contract.
2. Construction drawings, or 3D visuals only?
Why ask: This is the most expensive misunderstanding in the market. A render shows the look; nothing is built from it. A contractor needs dimensions, levels and details.
Reassuring: Construction drawings named explicitly — floor and ceiling plans, lighting and electrical layouts, wall elevations, details — and a sample set from a previous project you can look at.
Worrying: “The contractor knows his job.” That is not confidence in the contractor — it is transferring design decisions to him, and you are the one who will live in the result.
3. How many revision rounds are included?
Why ask: Revision is not an exception; it is part of every project. Disputes happen when it is undefined.
Reassuring: A number (“one round included; further rounds priced and scheduled before starting”), and a clear line between a revision and a change of scope.
Worrying: “Unlimited revisions.” Nobody provides unbounded work for a bounded fee — either the fee carries a large margin for it, or the limit appears later as friction.
4. How long does each stage take, and what delays it?
Why ask: A single overall duration tells you nothing useful. What helps is knowing where the project waits on you and where it waits on them.
Reassuring: Stages with durations, plus honesty that some clocks start when something arrives from you — files, an approval, a decision on a material.
Worrying: One total figure with no breakdown. It makes every delay attributable to anyone.
5. Who oversees construction — and is supervision included?
Why ask: The most expensive gap between design and reality opens here. Design ends with a file; construction begins after it. If nobody fills the space between, the contractor’s judgement does.
Reassuring: A clear answer either way. “Supervision is a separate service with its own scope and fee” is an excellent answer. So is “included, two site visits.” Ambiguity is the problem, not separation.
Worrying: “We’ll follow up with you.” Follow up how? Site visits? Messages? On request? Ask for specifics.
The two routes are compared in full in design-only or design-and-build.
6. How are spaces counted?
Why ask: The fee is built on the count, and the definition varies. “Room” is not a precise unit.
Reassuring: A written definition. For example: one space is one area with one function, so a bedroom with a dressing area counts as two, and an open plan counts by the number of functions requested. A definition like that is one you can apply to your own drawing before paying.
Worrying: “We’ll work it out when we see the plan.” It may be honest, but it means the figure you heard is not the figure.
7. What does the service exclude?
Why ask: The most important question here. Every contract has exclusions; the difference between studios is whether you learn them before or after.
Reassuring: A written list of exclusions, offered without being asked — no bills of quantities or pricing, no MEP or drainage drawings, no accompanied shopping.
Worrying: “It’s all included.” That phrase does not describe a contract. It describes a wish to end the conversation.
8. Is the specified furniture actually available, and who buys it?
Why ask: A schedule full of discontinued pieces or stale prices turns handover into the start of a new search.
Reassuring: Suppliers and reference numbers, clarity that purchasing is yours, and candour that availability and prices move — with advice to buy early after handover.
Worrying: A list with no sources, or an implied promise that every piece will still be there at construction. Nobody guarantees a third party’s stock.
9. What is the payment schedule?
Why ask: How a studio structures payment reveals how it thinks about risk and commitment, more than any conversation will.
Reassuring: Instalments tied to defined deliverables, a formal payment method with an invoice, and a written, published refund policy — even one that is not in your favour. Written and unfavourable beats absent.
Worrying: The full amount up front with no stages, or a personal transfer with no invoice. The second in particular leaves you with nothing to point at if you disagree.
10. What happens if I am late — or you are?
Why ask: Delay will happen on one side or the other. The question is not how to prevent it but what was agreed for when it occurs.
Reassuring: Mutual terms. A stated window for sending your files with a clear consequence for passing it, and against that a clear commitment on delivery dates with a consequence for missing them.
Worrying: Obligations running one way only. A balanced contract is not a courtesy — it signals that the other party expects to meet its own commitments.
Three things to ask to see, not to ask about
A complete drawing set from a past project — with the owner’s details redacted. You do not need to read the drawings. You are looking at something else: is it organised, does it carry dimensions and levels and details, or is it attractive images and two sheets? The difference is visible in seconds to anyone.
The contract, before you decide. Not the proposal. Read it in your own time, not across a table from someone waiting for a signature. Look specifically for four things: the deliverables list, revision rounds, exclusions, and what happens when either side is late. Anything missing is not agreed, whatever was said aloud.
A built project, not a render. Portfolios are mostly 3D visuals — legitimately so, since that is the studio’s product. But they show what was designed, not what was built. Ask for photographs after construction, ideally beside the original render. The distance between the two is the truest measure of whether a studio designs things that can actually be built — the subject of what interior design actually costs in its later sections.
Comparing two proposals with different prices
You will usually find a wide gap and ask why one is more expensive. The answer is rarely “higher quality.” It is almost always different scope — the two proposals are not selling the same thing.
The practical method: reduce both to one list, marking each item yes / no / priced separately.
- Construction drawings (floors · ceilings · lighting · electrical · elevations)
- 3D visuals — and how many
- Furniture schedule with suppliers and references
- Revision rounds included
- Site supervision or visits
- Bills of quantities
- Delivery time per stage
Filled in, the “large gap” usually collapses into a difference of three items. Then the comparison becomes real: do you need those three?
And if the cheaper proposal turns out to exclude construction drawings, it is not cheaper. It is a different service.
Reading the answers together
- Specific numbers and durations are always a good sign, even when you dislike them. A number means somebody thought about it.
- Exclusions volunteered unprompted are the strongest trust signal on this list. Anyone who tells you what they do not do has something to lose by failing at what they do.
- A clear “no” beats a vague “yes.” A studio that says “that is outside our scope” knows its scope.
- Pointing at the written terms — “it’s in the conditions, please read them” — means the spoken version matches the documented one.
Turning answers into commitments
Most people who ask these questions get good answers, then sign a contract that mentions none of them. An excellent spoken answer is worth nothing at the first disagreement — not because anyone lied, but because people forget, and the person who answered may not be the person who delivers.
Write the answers down the same day, in specific form: “one revision round,” not “they said revisions are flexible.” The specific form is how you later discover that what you understood was not what was meant.
Send a summary message. One email or message: “Confirming what we agreed — deliverables X, revision rounds Y, timeline Z, exclusions W. Please correct anything inaccurate.” It does two things: it gives the other side a fair chance to correct a misunderstanding before it grows, and it becomes a written reference if you disagree later. A serious studio replies to it with relief, because it protects them from an expectation they never intended.
Ask for what matters to be written into the contract. The request is itself a test. A studio that adds a clause you genuinely agreed on has no difficulty doing so; one that stalls at documenting what it said aloud is telling you something.
When to walk
Not every warning sign is a reason to leave — some are miscommunication a question will fix. Three are worth stopping at:
- Refusing to share the contract before payment. There is no professional reason for this.
- Refusing to put exclusions in writing after you have explicitly asked.
- Full payment up front, no invoice, no stages. The invoice is not a formality — it is your only standing.
One question for yourself first
Before asking any studio these questions, ask whether you need a full design project at all.
Many people who enter one needed a decision on a specific question — a layout reviewed, materials checked before ordering. A scoped consultation answers that at a published price and timeline. If what you need really is documentation a contractor builds from, then you are looking at a design project — and the ten questions above are your instrument.
Either way, ask them, write the answers down, and compare documents to documents rather than impressions to impressions.