The question "How much should I spend on interior design?" is one of the most common—and stressful—for any homeowner undertaking a renovation or decoration project. Unlike buying a car, there's no fixed price tag. The cost is highly subjective, influenced by the scope of work, your desired quality level, and where you live.
However, setting a clear, realistic budget before you start is the most critical step to a successful, stress-free project. Without a budget, even the most beautiful design can quickly become financially overwhelming.
Here is a comprehensive guide to understanding and allocating your funds for interior design.

The simplest starting point for a major renovation or a whole-home refresh is to look at your property's value. Industry professionals often suggest budgeting a percentage of your home's total worth for high-quality interior design and furnishings:
Example: If your home is valued at $500,000, a moderate renovation budget might fall between $25,000 and $50,000.
Once you have your total budget, you need to break it down by category. A common distribution model for a full design project looks like this:
|
Category |
Typical Budget % |
What It Covers |
|
50% Furniture & Decor |
45% - 55% |
Sofas, tables, beds, rugs, lamps, art, accessories, and window treatments. This is usually the largest chunk. |
|
45% Services & Construction |
40% - 50% |
Labour costs, construction materials (flooring, tiles, paint), plumbing, electrical work, and custom built-ins. |
|
5% Designer Fees |
5% - 10% |
Fees for the interior designer or architect (if hiring one). If you are DIYing, this percentage goes back into the furniture or services categories. |
Pro Tip: Always allocate an extra 10% to 15% of your total budget for a Contingency Fund. Unexpected costs (like discovering mold, re-routing plumbing, or tax/shipping fees) are inevitable in design projects.

Not all rooms are created equal. Kitchens and bathrooms are consistently the most expensive spaces due to plumbing, tiling, and specialized cabinetry.
|
Room Type |
Relative Cost Focus |
Key Budget Items |
|
Kitchen/Bathroom |
High |
Plumbing fixtures, cabinetry, countertops, tile work, and appliances. |
|
Living Room/Dining Room |
Medium |
Large anchor furniture (sofa, dining table), rugs, and lighting fixtures. |
|
Bedroom |
Low to Medium |
Mattress, bed frame, storage (dressers), and bedding. |
|
Home Office/Guest Room |
Low |
Desk, ergonomic chair, and shelving. |
When prioritizing your spending, dedicate your highest quality materials and largest spending to the anchor pieces that get the most use (e.g., a high-quality sofa, a durable kitchen countertop, and a comfortable mattress).
If you decide to hire a professional, their fees will be a significant part of your budget. Designers use three main charging structures:
Remember, a good designer can actually save you money by preventing costly mistakes, getting trade discounts, and keeping the project on schedule.
One of the biggest risks to any budget is making last-minute changes or buying furniture that doesn't fit the planned space. This leads to returns, restocking fees, and wasted time.
This is where planning tools like Roomtodo become essential budget protection:
Setting a budget is just the start; controlling it is the challenge. By planning meticulously in 3D, you ensure every dollar spent is intentional and effective.
Take control of your spending by visualizing your project accurately from the very beginning.
Start Designing and Budgeting Your Interior Project with Roomtodo Today!