You Can’t Control Your Leads Until You Know Where They Came From
The source of a lead is a person, not a channel. "Referrals" and "word of mouth" are labels that hide who actually sent the work, and you cannot deliberately repeat something you have only labeled. To take control of where your projects come from, trace your best recent projects back to the first person in the chain, look for what those people have in common, and then spend your time with more people like them.
That is the whole method. It needs no new marketing, no platform and no budget. It needs an afternoon and your own project list.
Why "referrals" is not an answer
Ask a firm owner where their work comes from and the answer is usually one word: referrals. It is true, and it is almost useless. It describes the mechanism, not the source.
A referral is the last step of a chain. Somebody called you because somebody else mentioned your name, and that person knew you because of a project, a dinner, a board, a builder you once saved from a bad week. The name at the start of that chain is the thing you can act on. "Referrals" is the thing you can only wait for.
An owner who says they have no control over their leads is usually describing a pipeline they have never looked at closely enough to steer. The work arrives, it is good work, and nobody can say which relationship produced it or whether that relationship is still active.
Running the trace
Take the projects from your last two or three years that you would happily do again. Leave out the ones you would turn down today; you are not trying to repeat those.
For each one, fill in a row. Work backwards from the client until you reach a person who is not the client.
Project
What goes in it: The job, in a few words
Who made first contact
What goes in it: Usually the client, sometimes their builder or representative
How they heard of you
What goes in it: Ask if you do not know. "A friend" is not an answer; which friend?
What that person does
What goes in it: Builder, architect, designer, broker, attorney, developer, past client, family office, and so on
How you know them
What goes in it: The original connection, as specific as you can make it
When you last spoke
What goes in it: Honestly
Some chains take one step. Some take three. Keep going until you reach a name, or until you genuinely cannot say. Record the unknowns as unknowns rather than guessing. They are part of the finding.
If you do not know how most of your clients heard of you, you have already learned the most important thing the exercise can tell you. Start asking every new inquiry the question, and write the answer down in the same place every time.
Reading the trace
A finished table is a list. What you want from it is a pattern. Work through it with four questions.
Does the chain end at a person you could name?
If the answer is yes: That person is a source. Mark them.
If the answer is no: Note it as unknown and move on; do not invent a source.
Do several chains end at the same kind of person?
If the answer is yes: That role is your real channel. It matters more than any single name.
If the answer is no: Your work is arriving from scattered one-offs, which is the pattern behind feast-or-famine.
Does that person meet the client before a designer is chosen?
If the answer is yes: They are upstream of the decision, which is where influence lives.
If the answer is no: They may be a good relationship, but they are not the reason work arrives.
Is the relationship active, or did it happen by accident?
If the answer is yes: Keep it that way on purpose.
If the answer is no: This is the gap. A source you are not in touch with is a source you are relying on luck to keep.
Run those honestly and most firms end up with a short answer: a small number of roles that keep appearing at the start of their best chains, and a set of relationships inside those roles that are warm, cooling, or cold.
That short answer is the thing "referrals" was hiding.
The source is a role, not a name
The single most useful move in the whole exercise is to stop reading the names and start reading the job titles.
If two of your favorite projects came through the same builder, you have one good relationship. If they came through two different builders who both work at the level you want, you have learned something much bigger: builders at that level are a source of your work, and there are more of them than you currently know.
The same logic runs across disciplines. An architecture practice may find its best residential work starts with interior designers or with the client's attorney. An interior design firm may find it starts with architects, landscape architects, or the brokers who sold the house. A firm trying to move into a new typology may find that nobody in its current chains touches that work at all, which is a clear signal about who it needs to meet next. That last case is covered in How to Win a Project Typology You've Never Done.
Once you know the role, the people you have not met yet in that role are your target list. That is what control over your lead source actually means. Not controlling who calls, which nobody can do, but choosing who you spend your time in front of.
Turning the trace into a list
Write down the roles that showed up at the start of your best chains. Under each, write two kinds of names.
People you already know in that role, especially the cooling and cold ones. These are the cheapest conversations available to you. They already know your work.
People you do not know yet who do the same job, at the same level, for the same kind of client. Your existing sources can usually tell you who they are, and an introduction from a peer lands very differently from a cold email.
Keep the list short enough that you can actually work it. A long list you never call is worse than a short one you do, because it feels like progress.
Then give it a rhythm. A standing hour in the calendar, a note of who you contacted and when, and a reason to be in touch that is about them rather than about you: a project of theirs you admired, an introduction you can make, a question only they can answer. The quality of the reason matters more than the frequency.
What control looks like after that
This is the shift from passive credibility to proactive relationship building. Your portfolio, your reputation and your past clients still do their work; they are what makes the conversation easy once it starts. But they do not choose who you are in the room with. The list does.
We cover the difference between the two in The Two Buckets of Marketing Every Design Firm Confuses, and what happens to a firm that relies on the passive bucket alone in Referral-Only Growth Has a Ceiling. Here's Where It Sits.
The practical obstacle is almost never knowing what to do. It is finding the hours. If the trace produces a list and the list never gets worked, the problem has moved from where your leads come from to where your week goes, and that is a separate exercise: Where Your Week Goes, and Whether You Should Still Be There.
When the trace comes back empty
Sometimes every chain ends at "found us online," "saw a project," or "not sure." That is not a failed exercise. It is the finding.
It tells you two things. First, the firm has been running on passive credibility alone, with nobody upstream deliberately sending work its way. Second, it has not been collecting the information needed to see its own pipeline. Both are fixable, and the second one costs nothing: ask every inquiry how they heard of you, record the answer against the project, and run the trace again once there is something to read.
In the meantime, work backwards from the projects you want rather than the ones you have had. Who meets that client before a designer is chosen? That is the role to start with.
Run it again
A trace is a snapshot. Relationships cool, people change firms, a builder you relied on retires, and a new source appears without anyone noticing. Running the same table once or twice a year takes very little the second time, because the columns are already there and the new rows are the only ones to fill in.
The rows that change are usually the most useful part. A source that produced two good projects and then nothing is worth a phone call to find out why.
What this is not
It is not a marketing plan, and it is not a list of channels to try. Generic channel lists are the wrong starting point for a firm whose best work already comes through relationships, because they cannot tell you which relationships those were.
It is a way to replace a one-word answer with a record, so that the time you spend building relationships goes to the people who have already shown they send you the work you want. You cannot choose who calls. You can choose who you are in front of, and the trace tells you who that should be.
Frequently asked questions
How do I get more clients for my design firm? Start with the clients you already have. Trace your best recent projects back to the first person in each chain, look for the roles that keep appearing, and spend deliberate time with more people in those roles. The pattern in your own history is a better guide than any list of generic channels.
Where do architecture and interior design firms find clients? Usually through people upstream of the client's decision, such as builders, other design disciplines, brokers, attorneys and past clients. Which of those matters for your firm is specific to your work, and the only reliable way to find out is to trace where your own best projects actually started.
How do I control where my leads come from? You cannot control who calls you, but you can choose who you spend time in front of. Identify the roles that sit at the start of your best project chains, list the people in those roles you know and don't yet know, and give that list a standing place in your calendar.
What should I do if I don't know how my clients found me? Treat that as the finding. Ask every new inquiry how they heard of you and record the answer against the project in one consistent place. Meanwhile, work backwards from the projects you want: identify who meets that client before a designer is chosen, and start there.
How often should I review my lead sources? Once or twice a year. Relationships cool, people change firms and new sources appear quietly, so a periodic trace catches both the sources you are losing and the ones you have not noticed yet.
19th & Co advises founder-led architecture and interior design firms on fees, hiring, operations, and business development. Founded by Christine Woodward — M.Arch, MBA candidate at Johns Hopkins, and graduate studies in management at Harvard, with fifteen years in practice — the firm has worked inside more than 500 design firms, delivered over 5,000 advising hours, and worked alongside more than 1,000 designers and firm leaders.
If you want to run the trace and work through what it turns up with someone who has read a lot of them, you can book a call on my calendar here.
Last updated: September 2026
