Add the rooms in scope and pick a design level to get an instant, itemized project estimate. Adjust every rate and your design fee to match your own pricing. Free, and no signup needed.
Rooms in scope
Add-ons (optional)
These figures are estimates to help you quote a project. Adjust the per-room budgets, add-ons, and design fee to match your market, the scope, and how you price.
It is a free tool that turns the rooms in a project and the level of finish into a fast, itemized estimate. Instead of rebuilding a spreadsheet for every enquiry, you list each room, pick a design level, adjust the budgets to match your pricing, add your design fee, and see the furnishings and build subtotal plus the project estimate right away.
Pick a design level at the top, then add one row per room in scope (living and dining, primary bedroom, kitchen, bath, and so on) and set how many of each. The tool fills in a typical per-room budget for that level, which you can change to match your market. Tick any add-ons such as 3D renderings or lighting design, set your design fee as a percentage of the build, and your estimate updates instantly.
There are three common models, and most designers blend them: a design fee (a flat fee, a percentage of the project, or an hourly rate), the cost of furnishings and finishes (often marked up), and project or site management. Rooms carry very different budgets because a kitchen or a primary suite takes far more cabinetry, joinery, and product than a guest bedroom. Scope, finish level, and how much you procure all move the number, which is why every budget and the design fee in this calculator are editable. For a full breakdown of fee models and rates, read our guide on how to price interior design projects.
These are common per-room starting points in the United States for a full-service, mid-range (Standard) project. Treat them as a baseline and adjust for your market, scope, and finish level.
| Room | Typical full-service budget |
|---|---|
| Living and dining room | $12,000 to $18,000 |
| Primary bedroom | $8,000 to $12,000 |
| Kitchen | $15,000 to $30,000 |
| Bathroom | $6,000 to $12,000 |
| Home office or guest room | $5,000 to $8,000 |
| Design fee | 10% to 30% of the build |
Walk the space or get the room list and finish level before you quote, price kitchens and primary suites well above secondary rooms, and set a design fee you can defend. Put the scope in writing on a signed estimate before you start, so the client knows exactly what is included. When the project is booked, our free interior design invoice template and estimate and quote generator turn the same line items into a professional document you can send in seconds.
This calculator provides estimates for planning purposes only. Your final price should reflect your own costs, local rates, and the scope of each project.
Estimate the project here, then send a branded quote and invoice, collect payment online, and track it all from one Billbooks account.
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