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Interior designers do much more than pick complementary paint colors and choose matching furniture — although those tasks are important parts of the job. Unlike decorators, interior designers usually have an associate of science degree or certificate of achievement in interior design from an accredited program. They’re trained in drafting, lighting and computer aided design (CAD), and are experts in room-specific design and residential space planning. Interior designers use these skills to plan and design safe, highly functional and beautiful interior spaces, from kitchens and bathrooms to family rooms and bedrooms. They determine space requirements, work within building codes and inspection regulations, and meet accessibility standards. An interior designer’s day-to-day job includes creative and technical tasks, both of which often require great communication skills:

• Creating model rooms and visuals using design software.
• Researching different textiles, materials, finishes, lighting and furniture.
• Hiring suppliers, vendors, and contractors.
• Estimating costs and making bids on potential jobs.

For many homeowners, the difference between a good interior designer and a bad one is simply a matter of taste — but all good designers have similar skill sets. Interior designers usually have a degree or certificate in interior design, with training in design principles and lighting, drafting, and computer aided design (CAD) software. Good interior designers have strong color balancing skills and understand how different colors influence spatial perception and moods. They know the building and electrical codes in the areas where they practice, and they make sure that any contractors they hire also work to those codes. They are knowledgeable about different upholstery fabrics and draperies, stay ahead of residential design trends, and maintain their own individual creativity. Also, good interior designers have excellent space designing skills, so they can arrange a space efficiently and with ideal traffic flow. Ultimately, hiring a good interior designer means pinpointing one whose signature style is complementary to your personal style — so checking out many designers’ portfolios is a must — and whose communication methods match yours.

You can hire an interior design for a job as basic as a one-room consultation or as complex as supervising the design of an entire new home, helping with space planning, choosing color palettes, and shopping for furniture, flooring and artwork. The size and scope of the job will determine how much an interior designer charges; the average national cost for an interior designer ranges from $75 to $100 or more per hour. Other cost factors include the person’s reputation — interior designers to the stars are usually more expensive — and region. Most interior designers charge an average of $100-$225 for an initial consultation, but some will charge an hourly rate, usually starting at an average of $50, for larger projects that require extensive consultations. Hourly rates may be available for smaller projects, such as redecorating a living room or staging a home for sale; for instance, shopping and consulting can cost an average of $75 to $100 per hour, while staging costs and average $95 per hour. For many homeowners, a percentage of an interior designer’s cost is recouped through the professional discounts they receive from their vendors.

Choosing an interior designer is all about finding one whose signature style fits well with your tastes and who can work within your budget. To choose the right professional for your interior design project, ask yourself these five questions:

• What is your signature style? Good interior designers can both describe their personal aesthetic and demonstrate their signature style through their portfolios. Make sure it appeals to you.
• How will you make sure the design fits my lifestyle? Good designers understand that the interior design must improve a homeowner’s experience in their home and fit into their lifestyle; for example, a white suede sofa is a poor choice for a family with large dogs and small children.
• How much do you charge? Depending on the project, an interior designer may charge an hourly rate, a flat fee or a percentage of the project’s total cost.
• How will you stick to my budget? An interior designer should have a plan for staying within your budget, which includes full transparency of costs and flexibility when choosing materials and furnishings.  

Because an interior design project is highly collaborative and based on hard-to-define personal preferences, it’s most important to choose a designer who communicates clearly and listens closely to you.