Communicate the real budget

This is first because it matters most and is violated most. A designer can only optimize within a number they know; a client who hides the budget, or names one they don't mean, produces wasted design rounds, mutual frustration, and a project that either overshoots or underwhelms.

The real number is not a weakness to protect in a negotiation — it is the essential input that lets the designer tell you what is achievable and direct your spending where it counts. The clients who share it honestly get better results for the money than the clients who play it close.

Decide, and commit

Indecision and reversals are the leading controllable cause of delays and overruns. The client who reviews options, decides, and moves forward gets a faster, cheaper, better project than the one who relitigates settled choices, second-guesses approvals, and changes direction late — every reversal ripples through procurement, scheduling, and budget.

This does not mean deciding rashly; it means engaging seriously when a decision is in front of you and then honoring it. Designers can absorb a great deal of client input; what they cannot absorb is a moving target.

Trust the expertise you hired

You are paying for judgment accumulated over a career; overriding every recommendation defeats the purpose and usually the result. The productive posture is engagement rather than either passive acceptance or reflexive veto: when a designer proposes something you're unsure about, ask their reasoning rather than simply rejecting it — the dialogue frequently produces a better third option than either the original proposal or your initial resistance.

The clients who get a designer's best work are the ones who make the designer feel like a trusted collaborator, not an adversary to be managed.

Respect the process, and set up the mechanics

Luxury design has phases for reasons, and pushing to skip steps or rush procurement trades quality for speed you will regret. Beyond that, a few communication mechanics prevent most friction: agree on how decisions get documented (written approvals prevent "I never agreed to that"), how change orders and their cost implications are handled, how often and through what channel you'll communicate, and — critically — who on your side holds decision authority.

A couple who disagree in front of the designer, or quietly reverse each other's approvals, is the single most common project-killer in residential work. Sort the decision-making on your side before the project starts.