I think you would need to get an estimate from a licensed general contractor and would be happy to recommend a few names to you. Once you have that number, you might want to consult with an agent such as myself to see what other homes in your particular neighborhood are selling for. In some instances, you may be overimproving your home and you would not be able to recoup the money invested. In other words, you might be better off trading up, particularly because interest rates are at all time lows. If you plan to be in the house with the improvements in place for a reasonable amount of time (in my opinion at least 7 years), you will have at least gotten to enjoy your improvements even if you don't get the money out dollar for dollar. In many instances that I've seen when homes have been over improved compared to other homes in a particular neighborhood, it is the next buyer who reaps the benefit of your money, time and effort at improving your home.
Next you should contact a real estate professional who can tell you if the work you plan on doing will improve the value of your home or not when compared to other homes
in your area