By the time a client asks for your proposal, they have already seen your portfolio and decided they like your work. The proposal answers a different question: can they trust you with their home, their budget and the next several months of their life?

A strong interior design proposal does three things. It shows that you understood the brief. It makes the scope and the process unmistakably clear. And it presents your fees in a way that feels considered rather than negotiable. Here is how to structure one.

Start with the client, not the studio

Open with a short page that reflects the brief back to the client. Two or three sentences in your own words: the home, the people who live there, what is not working today and what they hope it will feel like when you are finished.

This page matters more than any other. It is the first proof that you listened, and it sets the tone for everything that follows. Resist the urge to open with your biography; they already chose to talk to you.

The structure of a proposal

Most effective proposals follow the same sequence. Adapt the names to your studio, but keep the order.

1. Cover

The project name, the client's name, the date and your logo. Use a single strong image from your portfolio or a mood image that hints at the direction.

2. Understanding of the brief

The page described above. Short, specific, written in your voice.

3. Scope of work

List exactly what is included, room by room or phase by phase. Be precise: "Full design of the kitchen, including joinery drawings, lighting plan and finishes schedule" is far clearer than "kitchen design".

Just as important is a short section on what is not included. Architectural drawings, structural work, contractor management or styling for photography are common areas of confusion. Naming them now prevents difficult conversations later.

4. Process and timeline

Show the stages the project will move through, for example discovery, concept, design development, procurement and installation, with an approximate duration for each. Clients feel calmer when they can see the whole journey at once.

5. Investment

Present your fees clearly and confidently. Interior designers structure fees in different ways, commonly a flat fee, an hourly rate, a percentage of the project cost, or a combination with procurement handled separately. Whichever you use, explain what it covers and when payments are due.

Avoid hiding the number at the end of a long paragraph. A clean page with the fee, the payment schedule and what each stage includes reads as professional and settled.

6. Next steps

Close with exactly what happens if they say yes: signing the agreement, the initial payment and the date of the first working session. A proposal that ends without a clear next step leaves the client to decide what to do, and many will simply wait.

Your full terms and conditions usually belong in a separate agreement. If you are unsure what your contract should cover, it is worth having it reviewed by a professional in your region.

The design of the proposal is part of the pitch

An interior designer's proposal is judged as a design object. Clients notice the typography, the spacing and the quality of the images, and they read them as a preview of how you will treat their home.

A few principles keep it refined:

  • Use your brand typography and palette, the same as your website and stationery.
  • Give every page room to breathe. Generous margins signal confidence.
  • Include a mood board for the concept, even a simple one. It turns an abstract scope into something the client can picture.
  • Keep it short. Ten to fifteen well-designed pages usually say more than thirty dense ones.
  • Send it as a polished PDF, not an editable document that can shift on a different screen.

Common mistakes

  • Leading with the price. Context first, then investment.
  • A vague scope. The more specific it is, the fewer disagreements you will have later.
  • Copying another studio's proposal word for word. It shows, and it never sounds like you.
  • Waiting too long to send it. Momentum matters. Aim to send the proposal while the first conversation is still fresh in the client's mind.

A starting point

If you would rather not design a proposal from scratch, I created an editable Proposal & Mood Board template for interior designers in Canva, structured around the sequence above and ready to adapt to your brand. You can find it with my other studio documents in the digital products section.

And if your proposal is beautifully written but your logo, documents and website do not yet look like the same studio, that is exactly what a brand identity for interior designers is designed to solve.