Sourcing may be one of the most exciting parts of a design project but it’s also one of the riskiest. The right vendor can elevate your vision with rare materials, bespoke craftsmanship, and smooth logistics. The wrong one? It can cost you time, money, and worst of all…client trust.
Whether you’re working on a hotel in the Cotswolds or a high-spec residential in Notting Hill, knowing what to look out for is just as crucial as knowing what to look for.
Here are the vendor red flags interior designers, buyers, and procurement pros should never ignore:
Vague or Incomplete Product Information
If a vendor can’t clearly tell you the dimensions, lead times, materials, or shipping costs of a product…run.
You want:
- Precise specs
- Clear finish options
- Lead time estimates
- Transparency around where and how it’s made
Red flags:
If product listings are missing basic info or rely on you to ask 10 follow-up questions, that’s a sign the vendor may not be set up for trade or organized at all.
Unprofessional or Inconsistent Communication
When a supplier takes days to respond to simple enquiries, or replies with one-liners that don’t answer your questions, it’s time to think twice.
Communication is the foundation of any design collaboration. If it’s poor before the order, it’s unlikely to get better during production.
Red flags:
- No formal quotes
- No email trail or invoice documents
- Responses that are slow, vague, or overly casual
Green light:
Vendors who confirm details clearly, respond quickly, and offer clear next steps make your job easier—and your projects smoother.
No Visual Proof of Product Quality
In 2025, there’s no excuse for poor imagery. If a supplier can’t provide clear product photos or samples, how can you confidently present them to your client?
Red flags include:
- Pixelated or inconsistent photos
- No detail or texture shots
- No real-life settings or context
Pro tip: Look for suppliers who offer a mix of white background imagery, lifestyle shots, and even workshop photos. It speaks volumes about their attention to detail.
Sketchy Payment Terms or Pricing
If a vendor’s pricing is constantly changing—or they ask for full payment upfront without a clear policy—it’s a warning sign.
You want:
- Clear trade pricing
- Written quotes
- Invoicing with payment terms
- Flexibility for deposits or staged payments on larger orders
Red flags:
“Cash only,” “We’ll figure it out later,” or prices that fluctuate depending on who’s asking.
No Track Record with Trade or Hospitality Clients
Working with the trade requires understanding how designers work—tight timelines, large orders, customization, and expectations around finish consistency.
Good vendors will:
- Have testimonials or case studies
- Offer samples
- Understand the specification process
- Know how to pack and ship large items securely
Red flag they’ve never worked with trade before and can’t answer basic questions around lead times or order tracking, proceed with caution.
Resistance to Customization or Flexibility
You’re not buying for a retail customer—you’re specifying for a unique project. Trade suppliers should understand this. A vendor who resists customization or is rigid about formats may not be the right fit.
Red flag phrases:
- “We only sell as-is.”
- “We don’t do that.”
- “Take it or leave it.”
Green light:
Vendors who say “Let me check” or “We can explore options.”
Overpromising Without Proof
Beware the vendor who claims they can do everything—faster, cheaper, better—but doesn’t have the portfolio, testimonials, or process to back it up.
Designers often fall into this trap on Instagram: beautiful images, lots of hype—but no real clarity.
Ask:
- Have they delivered large projects before?
- Can they scale production?
- Do they have references from other designers?
The Takeaway
In a fast-paced, high-stakes design world, your vendor list is everything. Don’t be afraid to trust your gut—but always back it up with the facts. Great vendors are collaborative, consistent, and clear. They don’t just help you deliver a project, they make your life easier while doing it.
At Maison Source, we vet every supplier for trade-readiness, transparency, and professionalism so you can source smarter, not harder.
