The average cost to install or replace countertops is $3,105, with most projects falling between $1,858 and $4,177. However, the total price can range from $400 to $8,500 depending on several key factors. The most influential cost factors include the countertop material, the size in square feet, the quality of the new countertops, and the complexity of the job, such as the number of sink cutouts, corners, and special edging. Other considerations are the accessibility of the installation area and whether the project includes the removal and disposal of your old countertops. You have a wide array of material options to choose from. Laminate is generally the most budget-friendly, costing between $8 and $27 per square foot. On the higher end, slate countertops range from $30 to $90 per square foot. Other popular materials with varying price points include butcher block, quartz, granite, stainless steel, Corian, and wood.

Sintered stone and quartz are both low-maintenance materials resistant to water damage and scratching. However, quartz can be damaged by temperatures over 150°F, while sintered stone is heat-resistant up to 300°F. Both materials are comparable in cost, so ultimately, the decision will hinge on your preferences.

A minimum overhang of 10 to 12 inches is generally recommended for countertop or island seating to provide enough legroom. For increased comfort, an overhang of 15 to 18 inches is ideal, allowing for more space and a relaxed experience. However, a 10-inch overhang can be sufficient in certain situations, such as for bar-height countertops, when using small stools, or in smaller kitchens where space is limited. Taller countertops may also require less overhang than shorter ones. Ultimately, you should consider your specific needs for legroom and measure to ensure the overhang fits comfortably within your kitchen's layout.

The best tool for cutting countertops depends on the type of countertop material. For some softer materials, like laminate (Formica) and butcher block, you can use a hand saw, but most experts recommend power saws like circular saws, since these make the job go faster and easier and give more even results. However, power saws and circular saws are dangerous if used incorrectly, and they can be so powerful that they damage or chip laminate, stone, and other types of countertops. For this reason, you should take safety precautions and use best practices to prevent damage.