1. Don't delay decisions. If you want your renovation to go well, the best thing to do is make every single decision before work starts. A good builder or interior designer can talk you through the list of situations that might come up on your job, but decisions about situations aren't usually what cause delays.
Instead, most of the issues are related to decisions about things like paint, trim and faucet selection. These may seem small, but when your faucet is two weeks late, plumbers have to be rescheduled and the medicine cabinet door hits the faucet when it's installed, you’ll see how something small can balloon into a week’s delay on a five-week project.
2. Don't change your mind (too much). Even though it's inevitable that you'll change your mind about something on your project, know this: Every time you change your mind, it'll result in a change order. Although the change may seem minor, there are always added costs — even if it's only the time spent discussing the change.
Scheduling can be affected too. Everyone working on the job needs to be informed of the change so no one's working on the old plan. Everyone makes changes, and that's OK — just be aware of the potential to disrupt and delay the job.
3. Don't buy your own materials. It seems like an obvious way to save money — shop is going to mark up the cost of materials and pass that added cost on to you. That’s true, but the builder or interior designer may get a better price than you to begin with, meaning that even after markup, you'll pay the same price.
4. Don't put lipstick on a pig. Though a builder will rarely come right out and say this, some houses should be knocked down rather than have money put into them to fix them up. Though this is a rare situation, it’s common for people to put money into fancy cabinets for a house with a sagging foundation, or into a high-efficiency furnace in a house with no insulation. Listen to the professionals who come to look at your job. Be open to their suggestions.
5. Don't work without a contingency fund. If you find out that the work you wanted to do costs more than you expected or budgeted, you’re in good company. It’s almost unheard of that a person sets a realistic budget for a project. But don’t eat into your contingency to stretch the budget. If you follow rule number one and make every decision ahead of time, you can probably get away with a 5 percent contingency if you have a good general contractor.
6. Don't let kids and pets get in the way. Though the people working in your home will often try to accommodate your pets and kids, they shouldn’t have to — it's just not safe to have children or animals around construction.
7. Don't live in the home. Most people ignore this rule, and for good reason. Remodeling is expensive, and moving out just adds to the cost. If you can’t move out for the whole job, try to schedule some time away and set up a clean, comfortable place to retreat to when you can’t handle coming home to a messy and stressful construction site.
8. Don't be a distraction. It may sound harsh, but every minute someone working on your house spends talking to you, they are not working on your house. Is the conversation important and one that will have an impact on the job? That's one thing, but the electrician on the job isn't getting paid any more to spend 30 minutes talking about your vacation plans.
9. Don't ignore what the house wants. Though some people can pull off wearing a pair of high-top sneakers with a tuxedo, it can also go horribly wrong. Houses are the same way. Can an ultramodern kitchen in a Victorian brownstone work? Absolutely, but make sure you can pull it off. This is not to say a house can’t evolve with the times. There are no hard and fast rules — just get to know your house, live in it and do your research before you pull out the sledgehammer.
10. Don't work without a design. Some projects require an architect, some an interior designer, and sometimes a talented builder will get your aesthetic and help you come up with a good plan.
Whatever you do, don’t start a remodel without a detailed floor plan. A lot of elements interact in a space — put them all on paper and you’ll catch problems before they are built. You may be able to build a functional space without a plan, but if you want a functional and beautiful space, hire a designer.