Pricing is where an interior design project is won or lost. Quote too low and you design for free once furnishings and revisions pile up; quote too high without breaking down the fee and the client hesitates. This guide covers how US designers price projects, the common fee models, and how to turn an estimate into a quote you can send the same day.
Pick a pricing model
Most designers use one of these, or a blend, and there is no single right answer. What matters is that the client understands what they are paying for.
- Flat design fee. One fixed price for the design work on a defined scope. Clean and predictable for the client, but only safe once you know how long your projects really take.
- Percentage of project cost. The design fee is a percentage of the total build and furnishings, commonly 10% to 30%. Scales naturally with the size of the project.
- Hourly. Bill for the design time, often $100 to $250 an hour. Useful for consultations and open-ended scopes, but clients usually prefer a number they can plan around.
- Cost-plus. You pass through the cost of furnishings and finishes with a markup, often 20% to 35%. Frequently combined with a design fee.
Typical US interior design fees
These are common starting points in the United States. Treat them as a baseline and adjust for your market, scope, and finish level.
| Model | Typical range |
|---|---|
| Design fee, percentage of project | 10% to 30% of the build |
| Hourly design rate | $100 to $250 per hour |
| Furnishings markup, cost-plus | 20% to 35% |
| Full-service room budget, mid-range | $8,000 to $30,000 per room |
Price the rooms first, then the design fee
Build the estimate from the rooms in scope. A kitchen or a primary suite carries a far larger budget than a guest room because it takes more cabinetry, joinery, and product. Once you have the furnishings and build subtotal, apply your design fee on top, whether that is a percentage, a flat number, or your hours. Keeping the two separate makes the quote easy to read and easy to defend.
Do not forget procurement, management, and revisions
The design fee rarely covers everything. Procurement and ordering, on-site project management, 3D renderings, and a set number of revisions all take real time. Price them as their own line items rather than absorbing them, and put a revision limit in writing so scope creep does not quietly erase your margin.
Do the math in seconds
Rather than rebuilding a spreadsheet for every enquiry, our free interior design estimate calculator does it for you. Add each room, pick a design level, adjust the budgets to your pricing, tick add-ons, and set your design fee as a percentage. It gives an itemized, room-by-room project estimate you can send straight away.
From estimate to paid invoice
Winning the project comes down to a clear, professional estimate, not a number over the phone. Turn the calculator total into a quote in one click, send it, and convert it to an invoice as the work is delivered. Start with the free quote generator, or bill a project with the interior design invoice template.
The short version
- Pick a fee model your client can understand: flat, percentage, hourly, or cost-plus.
- Build the estimate room by room, then apply the design fee on top.
- Price procurement, management, renderings, and revisions as their own lines.
- Put the scope and revision limit in writing before you start.
- Send a clean estimate and convert it to an invoice to get paid faster.
Know your number for every room and every fee, and every interior design quote gets faster and more confident.
