Clients don’t hire an interior designer to choose throw pillows. They hire one because they walked into a room somewhere they couldn’t stop thinking about and want their own house to feel like that. The interior design proposal that wins is the one that proves you saw what they saw before it lists a single fee.
The line items are how the project gets executed. The vision is how the project gets approved.
Lead with the direction page, not the price
Page one (after the cover) should be a single-page vision summary. Three or four sentences, a mood board with five to seven images, a short note on the feeling the spaces will hold.
Something like:
Warm, layered, and quietly elegant. Natural materials (oak, linen, plaster) take the lead. The palette stays in muted creams, deep olives, and soft terracotta. The living room becomes the room everyone gravitates to without quite knowing why.
That paragraph is worth more than the next 14 pages combined. It’s what the client reads to their partner over dinner. It’s what gets the proposal signed.
Scope by room AND by phase
Two axes. Don’t pick one.
Rooms: living, dining, primary bedroom, primary bath, kitchen, etc.
Phases: discovery, concept, design development, procurement, install.
A scope table that shows both:
| Room | Concept | Design Dev | Procurement | Install |
|---|---|---|---|---|
| Living | Yes | Yes | Yes | Yes |
| Dining | Yes | Yes | Yes | Yes |
| Primary Bath | Yes | Yes | Yes | No (GC handled) |
| Office | Concept only | No | No | No |
Now there is no confusion about what you’re designing fully versus what you’re consulting on versus what you’re not touching. Scope creep dies in this table.
Fee structure: pick one and explain it
Don’t be coy. The interior design proposal must state the fee structure in plain language on a single page.
Examples:
- “Design fee: flat $8,500 for the concept and design development phases, paid in three milestones.”
- “Hourly rate: $185/hour for site visits, contractor coordination, and any work beyond the design phases, billed monthly with itemized time logs.”
- “Procurement: net cost plus 30% handling fee, billed at order placement. Trade discount is retained by the studio as the handling fee.”
Three sentences. The client reads them. The interior design proposal closes faster because no one is wondering “wait, but how do you actually make money?”
The product budget range
Never quote specific products in the proposal. Quote ranges.
- Furnishings: $30,000 to $45,000
- Lighting: $6,500 to $9,500
- Window treatments: $4,000 to $6,500
- Rugs: $5,500 to $9,000
- Art and accessories: $4,000 to $7,500
- Total furnishings budget: $50,000 to $77,500
This frames the investment without locking the client to a specific sofa that may have a 16-week lead time and a price change before procurement opens.
What the client provides
This list saves more relationships than any other section.
- Approved budget ranges in writing before procurement starts
- Access to home during business hours for site visits and install
- Decisions returned within 5 business days during design development
- Direct contact with their general contractor, architect, or landlord
- Existing inventory list of furniture they intend to keep
Without this list, you become the person who waits for decisions and absorbs the timeline cost. With it, slow client decisions are documented as the cause of any delays.
Revisions are not unlimited
Concept phase: 2 rounds of revision included on the overall direction.
Design development: 2 rounds per room on the spec package.
Anything beyond is billed hourly at your stated rate.
A proposal that says “revisions until you’re happy” guarantees you’ll lose money on every project. Designers who price for unlimited revisions either burn out or quietly resent the client by month three. I’ve watched two friends quit residential entirely because of this one line.
The timeline by phase, not by week
Clients want a date. Don’t give them one for the whole project. Give them dates per phase.
- Discovery and direction: 2 weeks from kickoff
- Concept presentation: 4 weeks from kickoff
- Design development complete: 8 weeks from kickoff
- Procurement opens: week 9
- Install (subject to lead times): typically 14 to 22 weeks from kickoff
The lead-time caveat is non-negotiable. Custom upholstery has been running 14 to 20 weeks for years now and that’s outside your control. Document it.
Payment schedule that funds the work
Common interior design proposal payment structure:
- 25% on signing, locks the start date
- 25% at concept approval
- 25% at design development approval
- 25% at procurement kickoff
- Product purchases: 100% upfront, billed at order placement
- Hourly time (if any): billed monthly
The procurement structure matters. You should never be floating client money to vendors. The client pays you, you pay the vendor.
The trade discount conversation, in writing
The single most common reason an interior design relationship sours is the client discovering the markup model on the back end. Put it in the interior design proposal in plain English:
The studio retains the trade discount as compensation for sourcing, specification, and procurement management. Products will be billed to you at the manufacturer’s list price (MSRP) or the price quoted at the time of order, whichever is lower.
Or, if you’re using cost-plus:
Products will be billed to you at our wholesale cost plus a 30% handling fee. Wholesale invoices are available upon request.
Either model is fine. Hidden models are not.
Send it within 5 business days of the discovery meeting
The proposal should land within a week of the discovery conversation. Faster than that and it feels rushed. Longer than that and the client’s enthusiasm cools.
Use a tracked proposal so you can see who opened it, how long they spent on the direction page versus the fees page, and whether they shared it with a spouse. That timing data tells you exactly when to follow up, and when the project is already lost.
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