Do you really need a three-car garage? If you only have two vehicles and you’re counting on the extra bay for storage space, consider other areas of the home that will work just as well — attic space, space under a stairwell, or spare bedroom. Or put up a garden shed, which is cheaper than building a huge garage.

Monitor construction allowances as the home is being built to ensure you’re getting what you asked for (and are paying for). This includes decorative details as well as structural elements. If you and your builder agreed, for instance, that a particular brand of insulation would be installed, don’t accept a lesser brand — at least not without a cost adjustment.

Use only a certified general contractor. The experience of a well-qualified contractor is invaluable to the home-building process. In addition, seasoned professionals have established relationships with suppliers and subcontractors — something you cannot possibly hope to get without years of experience in the business.

Try to avoid site preparation charges — hauling in-fill dirt, grading, clearing trees, blasting rock. These processes are expensive and add time to the building schedule right off the bat. Choose the best site you can afford and then pick a plan that fits that site or can be modified to better suit the site.

Avoid change orders — the changes in materials or blueprints that invariably occur in the midst of the building process. Not only do change orders cost more money, they add considerable time and frustration to the building process. Decide exactly what you want before ground is broken — and then stick to it.