All of them! And then a whole host of measurements you’d never think would matter, too, like the distance from your open dishwasher door to the nearest exit. The NKBA has had standards and guidelines in place for many years, including door and aisle clearances, counter depths for seating, and measurements on landing zones for dishes and hot objects. A designer can help with any and all of them. If you’re attempting to tackle the design yourself, check with your town building department about any safety and code requirements, which often stipulate things like the maximum distance between outlets or minimum clearances around an island. Next, look at the measurements for your new appliances, since they offer less flexibility than cabinets. Build in space for those appliances, and remember that each will need a small clearance on the sides. Don’t forget to factor in things like cord and hose lengths for dishwashers, ranges, and refrigerators. Custom cabinetry is built for a precise space, so you’re always guaranteed a perfect fit—but even stock and semi-custom cabinets can get you very close to a perfect fit, since any small gaps can be filled with trim by a carpenter.