Protect Your Procurement Process: The Contract Clause Every Designer Needs

A client signs your procurement agreement. You spec the sofa, source the fabric, place the order, and a few weeks later you find out they bought it themselves, through a friend, a sample sale, or a vendor they found online after seeing it in your presentation. The room still gets built. Your name might still be on it. Your profit margin from that line item is not.

This is one of the more common ways a design business quietly loses money, and it rarely happens all at once. It shows up one item at a time: a chandelier the client found on sale, a sofa picked up at a trade outlet, a window treatment a “friend in the business” offered to handle for less. Each individual instance feels small enough to let slide. Add them up over a single project, and they can represent thousands of dollars of margin that the contract was supposed to protect.

A member brought this exact frustration to Interior Design Community: a client agreed to a contract that included procurement, then bought the products directly, cutting the designer out of the profit. What should you do? The responses ranged from hard boundaries to creative fee structures, and beneath them all was the same realization: your interior design procurement clause is the only thing standing between a one-off frustration and a pattern that erodes your business model.

How a Signed Procurement Agreement Still Gets Bypassed

It rarely starts with a client trying to cheat their designer. It usually starts with a deal. A friend who works in window treatments offers a discount. A vendor reaches out directly after seeing the spec in a presentation. A relative finds the exact lamp on a resale site for half the price. None of it feels, to the client, like a contract violation. It feels like saving money on something they were already paying for.

That gap between how the client experiences the moment and what it actually does to your business is where this problem lives. One designer was living through exactly this kind of situation in real time when she posted to the community.

“Going through that right now! My client has a “friend” who is a window treatment person and they offered her a friend-discount and her trade pricing on fabric and trim. I told both parties that was a breach of contract and if I’m designing and specifying for any part of the design/project then I will be the one to place orders. My client held firm that she wants to use her friend to save money and I’m not sure what to do as we’re almost done with the design and the treatments are one of the final installs but also where I make a good profit plus I don’t want to set that precedent with future projects we’re getting ready to do with her.”

@crystalblackshaw

Notice what’s actually at stake in her situation. It is not only the lost margin on one set of window treatments, although that matters. It is the precedent. If this client gets to bypass procurement on the final install of this project, the next project with her starts from a weaker position, and so does every future client who hears about it.

Before you draft that language, it helps to see it inside the full agreement, not as an isolated add-on. IDC’s rundown of essential interior design contract clauses that protect your business covers the other protections worth building in alongside procurement.

The fix is not a stronger personality or a harder conversation in the moment. By the time a client is mid-project and already holding firm, you are negotiating from the weakest possible position. The fix is a clause that already answered the question before the friend-discount ever came up.

Why a Skipped Purchase Order Is a Margin Problem, Not a Trust Problem

It is tempting to treat this as a relationship issue, a sign that a particular client does not respect you. Sometimes that is true. But treating every instance as a referendum on the relationship overlooks the bigger pattern: procurement is often where a design firm’s actual profit lies.

Design fees compensate you for your time and expertise. Procurement, whether you call it markup, a cost-plus structure, or a procurement management fee, is frequently where a meaningful share of project profitability comes from. When a client buys around it, they are not just making an independent purchasing decision. They are removing a piece of your revenue model without renegotiating the rest of the engagement to compensate for it.

For the mechanics of structuring that revenue so it survives a bypass, see IDC’s guide to procurement fees, hourly rates, and markup.

There is also a quality and liability dimension that gets less attention than the lost revenue. When a client sources a product independently, you lose control over the vendor relationship, the lead time, the quality of what actually arrives, and your ability to advocate if something goes wrong. The finished room still has to look like your design. If the client’s independently sourced piece does not match the quality or aesthetic you specified, you are the one who has to live with how the room reads, even though you did not choose, inspect, or warranty what showed up.

Not every designer treats every bypass the same way, and that is worth taking seriously. Some firms have built flexibility into how they handle higher-trust, higher-spend relationships.

“I’m a designer with 15 years of experience. Our highest end clients do sometimes purchase on their own because they are able to get better pricing because of industry connections. They absolutely respect our involvement. We create the purchase orders and manage the warehousing and deliveries. They pay us 25-30% without hesitation. Our less wealthy clients have a harder time with that. We will sometimes offer them something we have seen on sale for them to order themselves. We feel sometimes they need to feel like they got a “win” to underscore our value on their project. Even better sometimes our vendors have reached out and when they have ordered on their own have passed us their markup knowing they found them through us.”

@mimiandhill

The detail worth underlining here is not that this designer allows purchases to be bypassed. It is that she still gets paid for them. The procurement fee survives even when the purchase path changes, because it was built into the agreement as compensation for the management, coordination, and liability she still carries, not as a markup tied exclusively to who clicks “buy.” That distinction is what separates a flexible policy from a loophole.

Write Your Interior Design Procurement Clause Before You Need It

The designers who handle this calmly are almost never improvising in the moment. They built an interior design procurement clause into their contract after the first time this happened, and they have not had to think hard about it since.

“I just added a clause to my contract that says if they do that I’m still going to charge them 30% of whatever they purchase.”

@bethany.adams.interiors

This is about as direct as a bypass clause gets. It does not try to prevent the client from buying around you. It makes the attempt financially pointless. If the client knows upfront that going around procurement still costs them a percentage fee, the “savings” they were chasing mostly evaporate, and the decision to bypass you stops being a free option.

“This is a common problem with residential clients. When it comes up, we email the client directly to clarify that we’re not responsible for delivery or installation. If they want us to handle that, we add 15% to the purchase cost. On the other hand, clients can’t purchase directly from vendors we’ve introduced them to if they do, it’s a breach of contract.”

@bashar.sg

This approach does two things the flat-fee clause does not. First, it separates the purchase itself from the logistics around it: delivery, installation, and coordination remain billable services even when the product purchase is not. Second, it draws a hard line specifically around vendors the designer introduced, which closes the most common version of this problem: the client who takes your sourcing and cuts you out of the transaction.

Educational content, not legal advice. Whichever version you adopt, run it past an attorney familiar with design contracts before it goes into your agreement. The right percentage, the right trigger language, and the right way to define “vendors we introduced you to” will vary by state and by how the rest of your contract is structured.

Decide How Hard a Line You’re Willing to Draw

Beyond the fee structure, there is a values question underneath this entire topic: how much flexibility are you willing to offer before you walk away from a project?

“I had a few clients that were straying from “the program.” The way I look at it, and this took me awhile, it’s their home, it’s their money, and therefore, they can do whatever they want. However, if it goes beyond what our original contract entails, it cancels out my entire procurement contract. I don’t shop retail. I don’t hold your hand on selections you’re making outside of our design agreement. If you want to design while I watch, I am simply not interested. If they think they can do better, go for it, but I’m out.”

@hollydennisandcompany

That is a hard line, and it is a defensible one. It treats procurement as an all-or-nothing service: either the client is fully within the design and procurement agreement, or they are managing their own project, and you are no longer accountable for the outcome. There is real protection in that clarity. It removes the gray area where a designer ends up half responsible for a room they did not fully control.

Designer Mia Johnson explores this same tension on To-The-Trade, IDC’s podcast, in the episode on redefining boundaries in interior design.

A hard line is not the only valid answer, but it does require you to actually enforce it, including in moments where walking away costs you a project you wanted. The fee structures from the previous section exist for designers who want a softer answer that still protects revenue. Pick the version that matches how you actually want to run client relationships, not the version that sounds toughest in an Instagram comment section.

What to Decide Before Your Next Contract Goes Out

None of these approaches work if they are written into the contract for the first time after a client has already gone around you. By then you are negotiating after the fact, which is the weakest position any business owner can be in.

“Years ago when I was first starting off I had a client that went behind my back and purchased a high ticket item I had extensively researched and sourced for them. I had a conversation with them explaining why that was in violation of our agreement, however since it wasn’t in my contract at the time I couldn’t really do anything. It was a hard learning experience, which taught me to include additional clauses regarding procurement in my agreement and now i discuss with my clients ahead of time if they’re interested in purchasing some of their own items and take on the responsibility that comes with it.”

@delilahantunesdesigns

That is the throughline across every answer in this thread, regardless of which policy a designer ultimately landed on. The clause has to exist before the temptation does. The conversation about what happens if a client wants to buy something themselves has to happen at onboarding, not three-quarters of the way through a project, when the treatments are already specified, and the friend discount is already on the table.

If you have not reviewed your own procurement language recently, this is the prompt to do so. Decide now whether your policy is a hard line, a flat percentage fee, or a tiered approach for different client relationships. Put it in writing. Then say it out loud during your next discovery call, before the contract is signed, while it is still an easy conversation instead of a confrontation.