When it comes to interior design, there are certain principles that can massively help you in creating a professional, desirable aesthetic suitable for you and your preferences. By following these principles, you can create interior design to be proud of. Of course, when it comes to interior design, there are really no rules – but tricks and tips to help you out are never a bad idea! Read on to find out about the most important principles of interior design.

Space planning

Space planning involves performing tasks such as defining the circulation patterns of the area you want to design, blocking out the relevant interior spatial areas, and developing the correct plans for equipment placement and furniture layout. Begin your project by first finding out whether your room has any functional deficiencies and how you can manipulate certain elements to better fit the individuals who are going to be living there.

Remember that the ultimate goal of space planning is to improve efficiency, and so in this way it can be extremely helpful. People tend towards the inclusion of unnecessary trends and additions, when it can often be the case that the simpler something is – the better.


Contrasting in interior design refers to the differentiation between certain colours and object luminance that can create a desirable aesthetic if paired correctly. Contrasting is achievable through colour, form, or space. For example, you could use two opposite colours to contrast each other and create an extremely distinguishable, unique aesthetic; black and white being the obvious choice.

With form, this can be achieved by combining objects with opposing sizes and shapes; a circular mirror with a rectangular sofa, for example. This creates a visually striking impact and can add an element of visual interest that is immediately noticeable upon first impression.


One of the most important principles for any interior designer is balance. Finding the right balance in your interior design begins with a room’s specific architectural features, such as doors and windows, then adding in different pieces until an equilibrium is found in the design. Radial balance (where items are arranged and distributed around a central point in the room), asymmetrical balance (elements in odd numbers that can be used by keeping the focal point in an imaginary central axis), and symmetrical balance (the most common type and is as the same suggests) are all elements of balance that can be utilised to create your desired effect.

With symmetrical balance being the most popular, it’s important to remember that you can divide the room into two halves of equal spacing and design around an imaginary axis running through the centre of the room.


When it comes to interior design, small details make all the difference. Paying attention to these details is important. This can include things like the colour or texture of the floor and the way it matches the wallpaper pattern or furnishings. Paying attention to these details will ultimately enhance every element of the design, and this includes the sort of decorative elements that people normally do not put much effort into researching or planning.


Rhythm here refers to the subtle pattern present within your design that ties all the other principles together. Rhythm is used to direct the eye around a certain space that has been organised with this in mind. First impressions will immediately tell you the rhythm of your interior design; both aesthetically and functionally.

CAL decorators have been carrying out high quality work in Gloucestershire since 2001. We pride ourselves on providing a friendly but professional service, with attention to detail and complete customer satisfaction our priorities on all of our projects.  If you’d like to know more about how we can help you choose your key colour trends for 2022, then take a look at our website or give us a call on 01452 540067.