A discovery call is the 20-to-45 minute conversation a web design agency has with a prospective client before either side commits to anything. Done right, it's the single highest-information meeting in the entire buying process — the moment you learn whether an agency is worth hiring and they learn whether your project is worth taking. Done poorly, it's a sales pitch with a Zoom background.

I'm David Campbell, founder of Nerd Stack. We've run hundreds of discovery calls — and sat through a few terrible ones on the other side of the table. This guide covers what a good discovery call actually looks like, what to expect, what to bring, and the signals to read along the way. Once you've vetted agencies, our guide to choosing an agency covers the broader decision; this is what to do when you've got a call on the calendar.

What a Discovery Call Is For

A discovery call has two jobs, and both sides have to do them:

  • The agency learns about your business. Goals, customers, current site, constraints, budget, timeline — enough to estimate scope and decide whether they're the right fit. A real discovery call is heavily the agency asking questions, not the agency pitching.
  • You learn about the agency. How they think, what kind of questions they ask, what they treat as important, what their default approach looks like — and whether the person you're talking to is someone you want in your business for the next two to three months.

A discovery call is not the proposal. It's the conversation that produces the proposal. The agency should leave the call with enough information to put together a scoped, priced estimate — or to tell you, honestly, that they're not the right fit.

How Long Should a Discovery Call Take?

20 to 45 minutes for a small-to-mid project. Less than 20 and the agency hasn't asked enough to scope anything; more than 60 and they're either over-selling or you're being run through a generic intake script. A focused half-hour is the sweet spot for most projects.

What to Bring to a Discovery Call

You don't need to prepare a presentation. You do need to have certain things ready in your head — or, better, in a short brief:

  • What you're trying to accomplish. Your goal for the project, ideally in one sentence with a number attached.
  • What's wrong now. Concrete problems with your current situation — not "the site is bad," but "the booking flow is broken on mobile."
  • Who you serve. Your actual best customers.
  • What you know about scope. Roughly how many pages, what functionality, must-haves vs. nice-to-haves.
  • Your budget range. An honest one. Hidden budgets produce worse calls, not better ones.
  • Your timeline. When you want to launch.
  • Who decides. Whether you'll make the call or a committee will.

Most of that fits in a written brief — see our guide to writing a web design brief for the full version.

What a Good Agency Will Ask

The questions the agency asks are themselves a signal. A good discovery call from the agency's side will probe:

  • Goals. "What does success look like in six months?" — and the follow-up to make it specific.
  • Customers. "Who are your actual best customers right now?" — and where they come from.
  • The current site. What's working, what's not, and what data the agency can see (analytics, conversion rate, top traffic sources).
  • Constraints. Existing platform, brand requirements, compliance regime, integrations you can't switch off.
  • Budget and timeline. Real ones, asked directly. An agency that won't ask about budget can't scope realistically.
  • Decision process. Who decides, how, and on what timeline.

Notice the pattern: nearly everything the agency asks is about you. If the agency spends most of the call talking about themselves, take it as a signal.

Questions You Should Ask Them

The agency isn't the only one with questions. A few high-signal ones to bring:

  • "What does your typical project look like for a business our size?"
  • "Who specifically on your team will work on this — and who will I talk to week to week?"
  • "How do you handle scope changes mid-project?"
  • "What does payment look like — milestones, deposit, schedule?"
  • "What's your typical timeline, and what most often pushes it?"
  • "Can I see two or three case studies for similar businesses?"
  • "What does post-launch support look like?"
  • "What's an example of a project that went poorly — and what did you learn?"

The last one is underrated. An agency that can't think of a project that went poorly hasn't done many; an agency that can, and can describe the lesson honestly, is one you can probably work with.

Discovery-Call Signals to Read

Beyond the literal answers, the call itself produces signals:

  • Listening vs. pitching. Good agencies listen for the first 70% of the call. Sales-heavy agencies pitch from minute three.
  • Specific vs. generic. Are they responding to your business, or running a script that fits anyone?
  • Comfortable saying "we're not the right fit." An agency that occasionally turns down work has the spine to push back on bad ideas mid-project. One that says yes to everything in the discovery call will say yes to everything in the project — including the things that hurt you.
  • Talks budget directly. An agency that won't ask about budget can't help you scope; one that asks vaguely is fishing. A good agency asks for a real range.
  • The person on the call. Is this someone who will actually touch your project, or a salesperson handing you off? Both can be fine — but you should know.

What Should Happen After the Call

If the call went well, the agency should follow up within a few business days with either a proposal or a thoughtful note explaining what they're putting together and when. A good follow-up shows the agency was paying attention: it'll reference specifics from your conversation, name a realistic scope, and propose next steps.

Watch for: a follow-up that feels templated and could have been sent before the call (poor signal); a follow-up that mentions things you didn't talk about (worse signal — the agency is running a generic playbook); or no follow-up at all (the worst). The first ten days after a discovery call are diagnostic in their own right. Once you have a proposal in hand, see our guide to what should be in a web design contract.

Frequently Asked Questions

How long does a web design discovery call usually take?

Most discovery calls run 20 to 45 minutes for a small-to-mid project. A focused half-hour is the typical sweet spot. Calls under 20 minutes usually haven't covered enough; over an hour often indicates an over-sell or a generic intake script.

Do I need to prepare for a discovery call with a web design agency?

Yes, lightly. Have your goal, what's wrong with the current site, who your customers are, a sense of scope, and a budget range ready. A short written web design brief is the best preparation — it speeds the call up and sharpens the resulting proposal.

What questions should an agency ask me on a discovery call?

Goals, customers, what's working and not working today, constraints (platform, brand, compliance), budget, timeline, and who decides. Nearly every good question is about you. If the agency spends most of the call talking about themselves, that's a signal.

Is the discovery call free?

Almost always. Most agencies offer a free discovery call as part of their sales process, on the understanding that not every call turns into a project. If an agency charges for the initial call, ask why and what that fee includes.

What happens after the discovery call?

A scoped proposal or a thoughtful follow-up within a few business days. The follow-up itself is a signal: it should reference specifics from your conversation, propose a realistic scope, and clearly outline next steps. Templated or absent follow-ups tell you something about how the project would run.

Bottom Line

A discovery call is the most information-dense meeting in the entire web design buying process — for both sides. Bring real answers to a few core questions, listen to how the agency responds, ask the things that genuinely matter to you, and read the follow-up as carefully as you read the conversation. Done right, one call gets you very close to a real decision.

At Nerd Stack, our discovery calls are 20 to 30 minutes, free, no pitch — just the conversation. See our web design service or book one, and bring as much or as little as you have.

Sources: AIGA — Standard Form of Agreement for Design Services.