It is important when renovating a house to bear in mind that there is a big difference between a loose plan and a final certainty. You may have ideas about what the house is going to look like and how much money it is going to make you, but those ideas can only become reality with a lot of work. Dont get carried away by the seemingly foolproof nature of your plans.
You should always make sure that you comparison shop every decision you make. You may need to pay builders and other workmen to do the renovation work. You should consult as many different companies as you can before contracting one to do the work check them for references and price. Do the same for materials and for any other service that will be required.
It can be tempting to walk away from a development, even temporarily, because you have just reached a point where every decision is difficult and you are second-guessing yourself on everything. You may just want to give up. At these times, you need to show steely reserve and keep in mind that time is very nearly equal to money.
Finally, you should always be ready to take the opinions of others on board. By going with your own gut on every decision you make it is possible to develop tunnel vision. You dont have to run every decision by someone and agree with all of their points, but it can be useful to ensure that you are looking at the plan from a more detached angle as this is what potential purchasers will be doing