How to Read an Interior Design Proposal: What to Look For

May 19, 2026

Why Proposals Are Worth Reading Carefully

Most budget overruns and designer-client disputes trace back to a proposal that wasn't read carefully, or one that was deliberately vague. A proposal is a legal foundation for the working relationship — understanding every section before you sign protects both parties and sets realistic expectations. Here's what each section should contain and what to watch for.

Section 1: Project Scope Description

This defines what is included. It should list: which rooms are covered, what level of service applies to each (full design vs. consultation only), whether the designer is handling procurement, and whether contractor coordination is included. Red flags:

• Vague language like "full design services" without specifying what that means.
• Scope that doesn't match what you discussed in the consultation.
• No mention of rooms or areas you specifically discussed.

Section 2: Fee Structure

The fee section defines how you'll be charged. The three main structures:

• Hourly rate: You pay for time spent. Best for undefined or open-ended scopes, but exposes you to cost uncertainty. Look for a not-to-exceed (NTE) cap if you're concerned about overruns.
• Flat fee: A fixed amount for a defined scope. Best for clarity, but verify exactly what triggers additional fees beyond the flat amount.
• Percentage of project: Common for large renovations. Verify the percentage, what it's calculated on (construction budget only? furniture too?), and whether it adjusts if the budget changes.

Section 3: Procurement Markup

If the designer sources furniture and materials on your behalf, they typically mark up the net (trade) cost by 15–35%. This section should specify the exact markup percentage. If it's absent, ask directly. On a $30,000 furniture budget, a 25% markup adds $7,500 to your total cost — that's not a small number to leave unaddressed.

Some designers charge a flat design fee with no markup, offering full retail transparency. Others charge a lower design fee but offset it with markup. Neither model is inherently better — but you need to understand which model you're working with to evaluate the true total cost.

Section 4: Payment Schedule

Standard payment schedules typically include: a deposit on signing (20–50% of the estimated fee), milestone payments tied to deliverables (concept approval, design presentation, procurement start), and a final payment at project completion. Watch for:

• Front-loaded payment schedules that require 75%+ upfront — unusual and worth questioning.
• No milestone structure — a single lump-sum payment due at signing with no deliverable milestones is a red flag.
• Furniture deposits: designers typically ask for 50–100% of the furniture cost before ordering. This is standard (vendors require deposits) — just confirm it's addressed in the contract.

Section 5: Deliverables List

What will you receive? A well-structured proposal lists specific deliverables: a measured floor plan, furniture layout drawing, concept boards, material specification sheets, a procurement list with vendor and pricing, and a final installation schedule. If the deliverables section is vague, ask for a more specific list before signing.

Section 6: Revision Policy

Most proposals include a specified number of revision rounds within the flat fee (typically two to three). Additional revisions are billed at an hourly rate. This is fair — but make sure you understand the policy before you start requesting changes. If you tend to change your mind frequently, negotiate for more revision rounds upfront.

Section 7: Timeline and Exclusions

Look for a projected timeline with milestones, and a list of what is not included in the scope. Exclusions are as important as inclusions. Common exclusions: contractor coordination (if not specifically included), furniture installation labor, styling, and post-project consultations. If you assumed something was included and it's in the exclusions list, address it before signing.

For a broader view of how the design process unfolds — and what each phase typically costs — see our guide on interior designer pricing structures. To find designers whose process and proposals are consistently clear, browse our ranked directory by city.