The interior design of any personal or office space must take care of many vital aspects. The following fundamental guidelines, if adhered to, will take care of most of these factors. All of them play an important role in the appeal of a space, though they may be put to use in varied ways in different situations.

Unity: This entails the idea that the whole house or any other building is to be treated as one unit, separated or divided only by walls and staircases, and that there should be some amount of intrinsic consistency in the design of the unit as a whole. It will be wise to remember the overall scheme of things.

Balance: This involves properly arranging objects in a particular space. It is crucial to put objects with similar visual appeal at carefully selected positions to attain that perfect balance from a particular point. There are three kinds of balance. The easiest one to accomplish and the most conventional one is symmetrical balance. Asymmetrical is the second kind of balance, which is quite fashionable, but demands a lot of thought and originality. A radial balance is the third kind, which is achieved by defining a small core and placing things around that.

Proportion: This is essentially to do with the dimensions and proportions of the articles. It is crucial that articles in a room go well together in terms of their sizes. A lack of proportion will cause the room to lose its overall attraction as certain objects will be too prominent, while others may get buried in the background.

Focus: Having a focus in a space is evidence of good interior design. Focal items can be anything ranging from a furniture item to an attractive painting or some other artistic piece. It is crucial that this item be related to the design of the whole room and that it has an impression on the observer. While it must be unique, it must blend with its surroundings.

Rhythm: Having a rhythm too is absolutely essential for achieving a good design. This implies that the design must have a feeling of continuity and smooth flow. Using several arcs, ornate walls or ceilings, decorative fixtures at carefully chosen distances, alternate colours etc can help attain a discernible rhythm.

Interior designing of a space will be coherent if these fundamental guidelines are taken into consideration. It is always advisable to take assistance from an interior design expert to assist you on these aspects and all the nuances.