Interior Designer or Decorator: The Difference Only Matters When Something Has to Move

Kate Crowley left a comment recently that reframed this whole question for me:

“I loved using one for our living room. In the end it saved us money, as her discount on the furniture was more than we paid out of pocket to her. She had things and treatments I would have never found, and access to showrooms only the trade could go to.”

That is not the argument most people expect. The assumption is that hiring a professional adds a cost on top of the furniture. Kate’s experience was the opposite, and once you understand how trade pricing works, it is not unusual.

It also raises the question this article is actually about. What Kate hired was a decorator, and for what she wanted, that was exactly right. Had her living room needed a wall opened, it would have been the wrong call, and not because of taste.

The Money Part First, Because It Is The Part People Get Wrong

Trade discounts on furniture and finishes typically run 20 to 50% below retail. Designers and decorators hold accounts with manufacturers and showrooms that do not sell to the public, and that access is the entire basis of the arrangement Kate described.

Run the arithmetic on a mid-sized living room. Sofa, chairs, a console, lighting, a rug, window treatments. If retail lands somewhere around $12,000 and the trade price is 30% lower, that is $3,600 of difference. A decorator charging a flat fee of $2,000 to $3,000 for a single room can genuinely cost you nothing net, which is precisely what Kate found.

Two things determine whether it works out that way for you:

How much you are actually buying. The maths only works at volume. Repainting and rearranging what you own gives the discount nothing to bite on, and you are paying purely for judgement, which may still be worth it but will not pay for itself.

Which fee model you are on. On cost-plus, you see the trade price and pay a stated percentage above it. On markup, you are quoted one number and the margin is invisible. Neither is dishonest, but only one lets you check Kate’s arithmetic on your own project. Ask which one you are being offered before you sign anything.

The other half of what she described is harder to price. Showroom access, fabrics and treatments that are not on any retail site, and someone who knows what exists. That is not a discount, it is a different inventory, and there is no version of shopping harder that gets you to it.

So Where Is The Line Between The Two?

Everything Kate wanted sits comfortably in decorator territory. Furniture, textiles, window treatments, art, lighting, layout within the walls that already exist. That is a real discipline and a large one, and the results in her room speak for it.

The line falls at anything structural, mechanical, or requiring a permit. Moving or opening a wall. Relocating plumbing. Adding an outlet where none exists. Altering a window opening or an egress route.

A decorator is not trained for that work, not insured for it, and in most cases not legally able to submit for it. That is a scope, not a criticism. The problem only appears when nobody establishes which scope was hired, which happens more often than it should because the two titles are used interchangeably.

Do You Need A License To Be An Interior Designer?

In most of the United States, no, and it surprises almost everyone.

There is no national licence. In a majority of states nothing prevents an untrained person from using the term. What exists instead is state-by-state legislation that splits into two kinds.

A title act protects the words. You cannot call yourself a Registered or Certified Interior Designer without qualifying, but anyone may still do the work under a different label. A practice act restricts the work itself.

29 states, plus Washington DC and Puerto Rico, currently have some level of legislation regulating or recognising the profession. Every regulated jurisdiction in the US and Canada requires the NCIDQ exam except California, which certifies through the CCIDC. That leaves more than twenty states with nothing at all. The Council for Interior Design Qualification publishes the current requirements jurisdiction by jurisdiction, and it is the source worth checking rather than a designer’s own website.

What A Stamped Drawing Is, And Why It Decides Who You Hire

A stamped drawing is a construction document signed and sealed by somebody the state holds professionally responsible for its accuracy. Building departments will not accept a permit application without one where the work requires it.

In most jurisdictions that seal comes from a licensed architect or engineer. In some title act states, qualified interior designers hold permitting privileges and can stamp and submit drawings themselves, usually for interior and non-load-bearing work.

For a homeowner, this is the practical difference between the two professions, and it has nothing to do with taste. If your project needs a permit and the person you hired cannot produce a stamped drawing, the project stops until you find somebody who can. That pause tends to arrive after cabinets have been ordered and furniture delivered, which is what makes it expensive rather than merely inconvenient.

The order matters more than the choice. Structural questions answered first, then specification. Reversed, you are redesigning around a beam nobody planned for.

What Each One Is Genuinely Good At

A decorator reads a room faster than most people read a menu. Kate’s comment names the two things that are hardest to replicate: sourcing you cannot do yourself and treatments you would not have known existed.

Beyond access, the skill is proportion and edit. Whether the sofa is too deep for its wall. Whether the art is hung four inches too high, which it usually is. Why a room reads cold when the palette looks fine on paper, and why one warm timber piece fixes it. Those judgements are worth paying for and most homeowners cannot make them, which is a separate observation from whether they have good taste. Plenty of people with excellent taste own rooms that do not work, usually for reasons of proportion rather than style.

A designer carries that same eye plus code, structure, building systems and the documentation to get work permitted. On a room that is only changing its surfaces, most of that training sits unused, and you are paying for capability you will not draw on.

What Each One Charges

Treat these as shape rather than fixed rates, since markets vary considerably.

Decorators commonly work hourly at roughly $75 to $200, or a flat fee per room. Many work on product markup instead of or alongside a fee.

Designers run higher, often $150 to $450 hourly, or a percentage of total project cost between 10 and 30%. Larger projects usually open with a retainer drawn down against hours.

The American Society of Interior Designers is a reasonable place to start when checking credentials, though membership is not a licence and should not be read as one.

An Honest Note About The Word Decorator

The industry has developed a quiet snobbery about the term, and it costs clients money.

Designers avoid it because they spent years qualifying and want the distinction understood, which is fair enough. Decorators avoid it because the word has been made to sound lightweight, so many call themselves designers instead. That is legal in most of the country, and it means a homeowner cannot tell from a title, a website or a portfolio which one they are speaking to. Everyone photographs similar rooms. Everyone uses similar language.

The difference only surfaces when somebody asks a question about a wall.

So Which One Do You Hire?

If nothing is moving, hire the decorator. If you are buying a meaningful amount of furniture, the trade discount may cover the fee entirely, exactly as Kate found, and you get access to a market you cannot otherwise shop.

If anything is moving, opening, relocating or requiring a permit, the designer comes first. Not both together, not a decorator with a designer on standby. First, before a single item is specified.

Ask any candidate two questions before signing. Are you licensed or registered in this state, and can you produce stamped drawings if this project needs a permit. A specific answer to both tells you what you are hiring. Vagueness on either is also an answer.

Kate’s comment is quoted with thanks. If you are working out what your own living room needs before deciding who to call, our living room pieces and wall art collections are a reasonable place to start.