It is no secret that a well maintained, clean and appealing home has a far better chance of selling, at a higher price and more quickly than a home that could use some work and attention.
Keep in mind that first impressions always create lasting impressions and nothing exemplifies this better than real estate.
Of course, this does not mean you need to embark on a major renovation project in order to sell your home. There would be no guarantees you would be able to recoup the costs of such a large and expensive project anyway.